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1

MAC-Kaust Project P1 CO2 Sequestration Modeling of CO2 sequestration including parameter  

E-Print Network [OSTI]

MAC-Kaust Project P1 ­ CO2 Sequestration Modeling of CO2 sequestration including parameter identification and numerical simulation M. Brokate, O. A. PykhteevHysteresis aspects of CO2 sequestration modeling K-H. Hoffmann, N. D. Botkin Objectives and methods of CO2 sequestration There is a popular belief

Turova, Varvara

2

KS0 regeneration on nuclei and the coherent production model  

Science Journals Connector (OSTI)

We use the coherent production model to calculate the energy dependence of the forward KS0 regeneration amplitude on nuclear targets. The agreement with experiment is satisfactory.

Fumiyo Uchiyama

1974-02-01T23:59:59.000Z

3

Modeling of CO2 storage in aquifers  

E-Print Network [OSTI]

Feb 6, 2011 ... atmosphere, increasing its temperature (greenhouse effect). To minimize climate change impacts, geological sequestration of CO2 is an ...

santos,,,

4

System-level modeling for geological storage of CO2  

SciTech Connect (OSTI)

One way to reduce the effects of anthropogenic greenhousegases on climate is to inject carbon dioxide (CO2) from industrialsources into deep geological formations such as brine formations ordepleted oil or gas reservoirs. Research has and is being conducted toimprove understanding of factors affecting particular aspects ofgeological CO2 storage, such as performance, capacity, and health, safetyand environmental (HSE) issues, as well as to lower the cost of CO2capture and related processes. However, there has been less emphasis todate on system-level analyses of geological CO2 storage that considergeological, economic, and environmental issues by linking detailedrepresentations of engineering components and associated economic models.The objective of this study is to develop a system-level model forgeological CO2 storage, including CO2 capture and separation,compression, pipeline transportation to the storage site, and CO2injection. Within our system model we are incorporating detailedreservoir simulations of CO2 injection and potential leakage withassociated HSE effects. The platform of the system-level modelingisGoldSim [GoldSim, 2006]. The application of the system model is focusedon evaluating the feasibility of carbon sequestration with enhanced gasrecovery (CSEGR) in the Rio Vista region of California. The reservoirsimulations are performed using a special module of the TOUGH2 simulator,EOS7C, for multicomponent gas mixtures of methane and CO2 or methane andnitrogen. Using this approach, the economic benefits of enhanced gasrecovery can be directly weighed against the costs, risks, and benefitsof CO2 injection.

Zhang, Yingqi; Oldenburg, Curtis M.; Finsterle, Stefan; Bodvarsson, Gudmundur S.

2006-04-24T23:59:59.000Z

5

Selection of coals of different maturities for CO2 Storage by modelling of CH4 and CO2 adsorption isotherms  

E-Print Network [OSTI]

of this study is to compare and model pure gas sorption isotherms (CO2 and CH4) for well-characterised coals of different maturities to determine the most suitable coal for CO2 storage. Carbon dioxide and methane; Coals; Methane and carbon dioxide adsorption; Modelling isotherms 1. Introduction CO2 is a greenhouse

Paris-Sud XI, Université de

6

CP Asymmetries of B KS and B 'KS in SUSY GUT Model with Non-Universal Sfermion Masses  

Science Journals Connector (OSTI)

......research-article Articles B42 B52 B58 CP Asymmetries of B KS and B KS in SUSY GUT...University, Nagoya 464-8602, Japan We analyze CP asymmetries of B KS and B KS in a supersymmetric...important as the gluino one. We show that the CP asymmetries of B KS and B KS can deviate......

Sung-Gi Kim; Nobuhiro Maekawa; Akihiro Matsuzaki; Kazuki Sakurai; Tadashi Yoshikawa

2009-01-01T23:59:59.000Z

7

Modeling the Sequestration of CO2 in Deep Geological Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the Sequestration of CO the Sequestration of CO 2 in Deep Geological Formations K. Prasad Saripalli, B. Peter McGrail, and Mark D. White Pacific Northwest National Laboratory, Richland, Washington 99352 corresponding author Prasad Saripalli Senior Research Scientist Pacific Northwest National Laboratory 1313 Sigma V Complex (K6-81) Richland, WA 99352 ph: (509) 376-1667 fax: (509) 376-5368 prasad.saripalli@pnl.gov 2 Modeling the Sequestration of CO 2 in Deep Geological Formations K. Prasad Saripalli, B. Peter McGrail, and Mark D. White Pacific Northwest National Laboratory, Richland, Washington 99352 Modeling the injection of CO 2 and its sequestration will require simulations of a multi- well injection system in a large reservoir field. However, modeling at the injection well

8

numerical methodology to model and monitor co2 sequestration  

E-Print Network [OSTI]

CO2 sequestration is a means of mitigating the greenhouse effect [1]. Geologic sequestration involves injecting CO2 into a target geologic formation at depths ...

santos,,,

9

An Improved Model To Forecast Co2 Leakage Rates Along A Wellbore | Open  

Open Energy Info (EERE)

Model To Forecast Co2 Leakage Rates Along A Wellbore Model To Forecast Co2 Leakage Rates Along A Wellbore Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Improved Model To Forecast Co2 Leakage Rates Along A Wellbore Details Activities (0) Areas (0) Regions (0) Abstract: Large-scale geological storage of CO2 is likely to bring CO2 plumes into contact with a large number of existing wellbores. Wellbores that no longer provide proper zonal isolation establish a primary pathway for a buoyant CO2-rich phase to escape from the intended storage formation. The hazard of CO2 leakage along these pathways will depend on the rate of leakage. Thus a useful component of a risk assessment framework is a model of CO2 leakage. Predicting the flux of CO2 along a leaking wellbore requires a model of fluid properties and of transport along the leakage

10

Methanol Synthesis from CO2 Hydrogenation over a Pd4/In2O3 Model...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Methanol Synthesis from CO2 Hydrogenation over a Pd4In2O3 Model Catalyst: A Combined DFT and Kinetic Study. Methanol Synthesis from CO2 Hydrogenation over a Pd4In2O3 Model...

11

Gravity monitoring of CO2 movement during sequestration: Model studies  

E-Print Network [OSTI]

CO 2 enhanced oil recovery (EOR) and sequestration in afor a coalbed methane formation. EOR/sequestration petroleumbut shallow compared to either EOR or brine formations. The

Gasperikova, E.

2008-01-01T23:59:59.000Z

12

A dynamic model for optimally phasing in CO2 capture and storage infrastructure  

Science Journals Connector (OSTI)

CO"2 capture and storage (CCS) is a climate-change mitigation strategy that requires an investment of many billions of dollars and tens of thousands of miles of dedicated CO"2 pipelines. To be effective, scientists, stakeholders, and policy makers will ... Keywords: CO2 capture and storage, Climate-change policy, Infrastructure modeling, Pipeline modeling, SimCCS, Spatiotemporal optimization

Richard S. Middleton; Michael J. Kuby; Ran Wei; Gordon N. Keating; Rajesh J. Pawar

2012-11-01T23:59:59.000Z

13

Dispersion of Light and Heavy Pollutants in Urban Scale Models: CO2 Laser Photoacoustic Studies  

Science Journals Connector (OSTI)

The distribution of pollutants in two urban scale models (point emission source and street canyon with extensive transport) was investigated by means of CO2 laser...

Zelinger, Z; Strižík, M; Kubát, P; Civiš, S; Grigorová, E; Jane?ková, R; Zavila, O; Nevrlý, V; Herecová, L; Bailleux, S; Horká, V; Ferus, M; Skrínský, J; Kozubková, M; Drábková, S; Janour, Z

2009-01-01T23:59:59.000Z

14

A numerical procedure to model and monitor CO2 sequestration in ...  

E-Print Network [OSTI]

Sep 7, 2012 ... analyze storage integrity, providing early warning should any leakage occurs. A numerical procedure to model and monitor CO2 sequestration ...

santos

15

Semi-analytical model of brine and CO2 leakage through an abandoned plugged well. Applications for determining an Area of Review and CO2 leakage rate  

E-Print Network [OSTI]

Semi-analytical model of brine and CO2 leakage through an abandoned plugged well. Applications for determining an Area of Review and CO2 leakage rate Arnaud Réveillère, Jérémy Rohmer, Frédéric Wertz / contact the leak, and of CO2,g as a first approach. Compared to the state of the art, it adds the possibility

Paris-Sud XI, Université de

16

Long-term effects of anthropogenic CO2 emissions simulated with a complex earth system model  

E-Print Network [OSTI]

Long-term effects of anthropogenic CO2 emissions simulated with a complex earth system model Uwe earth system model con- sisting of an atmospheric general circulation model, an ocean general

Winguth, Arne

17

Modeling Obliquity and CO2 Effects on Southern Hemisphere Climate during the Past 408 ka  

Science Journals Connector (OSTI)

The effect of obliquity and CO2 changes on Southern Hemispheric climate is studied with a series of numerical modeling experiments. Using the Earth system model of intermediate complexity Loch–VECODE–ECBilt–CLIO–Agism Model (LOVECLIM) and a ...

Axel Timmermann; Tobias Friedrich; Oliver Elison Timm; Megumi O. Chikamoto; Ayako Abe-Ouchi; Andrey Ganopolski

2014-03-01T23:59:59.000Z

18

Optimization Model for Energy Planning with CO2 Emission Considerations  

Science Journals Connector (OSTI)

This paper considers the problem of reducing CO2 emissions from a power grid consisting of a variety of power-generating plants:? coal, natural gas, nuclear, hydroelectric, and alternative energy. ... Approximately 28.5% of OPG electricity is produced through the combustion of fossil fuels, 27% through hydroelectricity, and 44% through nuclear energy, and the remaining 0.5% comes from renewable or other energy sources, such as wind turbines. ... A sensitivity analysis was also performed to evaluate the impact of natural gas prices, coal prices, and retrofit costs on the optimal configuration of the OPG fleet of electricity-generating stations. ...

Haslenda Hashim; Peter Douglas; Ali Elkamel; Eric Croiset

2005-01-12T23:59:59.000Z

19

Modeling of coal bed methane (CBM) production and CO2 sequestration in coal seams  

Science Journals Connector (OSTI)

A mathematical model was developed to predict the coal bed methane (CBM) production and carbon dioxide (CO2) sequestration in a coal seam accounting for the coal seam properties. The model predictions showed that, for a CBM production and dewatering process, the pressure could be reduced from 15.17 MPa to 1.56 MPa and the gas saturation increased up to 50% in 30 years for a 5.4 × 105 m2 of coal formation. For the CO2 sequestration process, the model prediction showed that the CO2 injection rate was first reduced and then slightly recovered over 3 to 13 years of injection, which was also evidenced by the actual in seam data. The model predictions indicated that the sweeping of the water in front of the CO2 flood in the cleat porosity could be important on the loss of injectivity. Further model predictions suggested that the injection rate of CO2 could be about 11 × 103 m3 per day; the injected CO2 would reach the production well, which was separated from the injection well by 826 m, in about 30 years. During this period, about 160 × 106 m3 of CO2 could be stored within a 21.4 × 105 m2 of coal seam with a thickness of 3 m.

Ekrem Ozdemir

2009-01-01T23:59:59.000Z

20

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems  

E-Print Network [OSTI]

interest in subcritical (hot/liquid) water from 298 K to 473subcritical region. Modeling Studies on the Transport of Benzene and H 2 S in CO 2 -Water

Zheng, L.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

GAS HYDRATE EQUILIBRIA FOR CO2-N2 AND CO2-CH4 GAS MIXTURES, EXPERIMENTS AND MODELLING  

E-Print Network [OSTI]

to remove those industrial gases that have an impact on the global warming before being emitted CO2 capture in industry is regarded as a possible tool that is suitable for reducing the global steelmaking plants, gas or coal power plants, chemical plants or natural gas production plants. Facing

Paris-Sud XI, Université de

22

Modelling and transient simulation of CO2-refrigeration systems with Modelica  

Science Journals Connector (OSTI)

This paper presents the current results of the development of a Modelica library for CO2-refrigeration systems based on the free Modelica library ThermoFluid. The development of the library is carried out in a research project of Airbus Deutschland and the TUHH and is focused on the aim to obtain a library for detailed numerical investigations of refrigeration systems with the rediscovered refrigerant carbon dioxide (CO2). A survey of the concept of an integrated on-board cooling system of airliners, the modelling language Modelica™ and the CO2-library is given and the modelling of CO2-heat exchangers is described. A comparison with steady state results of heat exchangers shows a fair agreement. The presented transient simulation results are compared with experimental data showing also a fair agreement.

Torge Pfafferott; Gerhard Schmitz

2004-01-01T23:59:59.000Z

23

Modeling supercritical CO2 injection in heterogeneous porous media  

SciTech Connect (OSTI)

We investigate the physical processes that occur during the sequestration of CO{sub 2} in brine-bearing geologic formations using TOUGH2. An equation of state package that treats a two-phase (liquid, gas), three-component (water, salt, and CO{sub 2}) system is employed. CO{sub 2} is injected in a supercritical state that has a much lower density and viscosity than the liquid brine it displaces. In situ, the supercritical CO{sub 2} forms a gas-like phase, and also partially dissolves in the aqueous phase. Chemical reactions between CO{sub 2} and rock minerals that could potentially contribute to mineral trapping of CO{sub 2} are not included. The geological setting considered is a fluvial/deltaic formation that is strongly heterogeneous, making preferential flow a significant effect, especially when coupled with the strong buoyancy forces acting on the gas-like CO{sub 2} plume. Key model development concerns include vertical and lateral grid resolution, grid orientation effects, and the choice of characteristic curves.

Doughty, Christine; Pruess, Karsten

2003-04-10T23:59:59.000Z

24

Gravity monitoring of CO2 movement during sequestration: Model studies  

SciTech Connect (OSTI)

We examine the relative merits of gravity measurements as a monitoring tool for geological CO{sub 2} sequestration in three different modeling scenarios. The first is a combined CO{sub 2} enhanced oil recovery (EOR) and sequestration in a producing oil field, the second is sequestration in a brine formation, and the third is for a coalbed methane formation. EOR/sequestration petroleum reservoirs have relatively thin injection intervals with multiple fluid components (oil, hydrocarbon gas, brine, and CO{sub 2}), whereas brine formations usually have much thicker injection intervals and only two components (brine and CO{sub 2}). Coal formations undergoing methane extraction tend to be thin (3-10 m), but shallow compared to either EOR or brine formations. The injection of CO{sub 2} into the oil reservoir produced a bulk density decrease in the reservoir. The spatial pattern of the change in the vertical component of gravity (G{sub z}) is directly correlated with the net change in reservoir density. Furthermore, time-lapse changes in the borehole G{sub z} clearly identified the vertical section of the reservoir where fluid saturations are changing. The CO{sub 2}-brine front, on the order of 1 km within a 20 m thick brine formation at 1900 m depth, with 30% CO{sub 2} and 70% brine saturations, respectively, produced a -10 Gal surface gravity anomaly. Such anomaly would be detectable in the field. The amount of CO{sub 2} in a coalbed methane test scenario did not produce a large enough surface gravity response; however, we would expect that for an industrial size injection, the surface gravity response would be measurable. Gravity inversions in all three scenarios illustrated that the general position of density changes caused by CO{sub 2} can be recovered, but not the absolute value of the change. Analysis of the spatial resolution and detectability limits shows that gravity measurements could, under certain circumstances, be used as a lower-cost alternative to seismic measurements.

Gasperikova, E.; Hoversten, G.M.

2008-07-15T23:59:59.000Z

25

Modeling of CO2 Reduction Impacts on Energy Prices with Modelica Philip Machanick1  

E-Print Network [OSTI]

, Peter Fritzson1,2 1 School ITEE, University of Queensland, Australia 2 PELAB, Department of ComputerModeling of CO2 Reduction Impacts on Energy Prices with Modelica Philip Machanick1 , Ariel Liebman1 at the ap- propriate rate. In this paper we present a Modelica model which explores the trade

Machanick, Philip

26

Physics and Seismic Modeling for Monitoring CO2 Storage JOSE M. CARCIONE,1  

E-Print Network [OSTI]

, methane-bearing coal beds and saline aquifers. An example of the latter is the Sleipner field in the North-elastical equations model the seismic properties of reservoir rocks saturated with CO2, methane, oil and brine conditions, and can approach that of liquid water. Instead, pure CH4 (methane, hydrocarbon gas) exhibits

Santos, Juan

27

The H-Cube Project: Hydrodynamics, Heterogeneity and Homogenization in CO2 storage modeling  

E-Print Network [OSTI]

. Audigane, BRGM, E. Mouche, CEA, S. Viseur, CEREGE, D. Guérillot, TERRA 3E And the H-CUBE team Key words-scaling processes We propose to assess the buoyant forces on the CO2 and brine vertical migration of heterogeneity field distribution on the same 3D static earth model appropriate ranking measures of the static

Paris-Sud XI, Université de

28

3D CFD Model of High Temperature H2O/CO2 Co-electrolysis  

SciTech Connect (OSTI)

3D CFD Model of High Temperature H2O/CO2 Co-Electrolysis Grant Hawkes1, James O’Brien1, Carl Stoots1, Stephen Herring1 Joe Hartvigsen2 1 Idaho National Laboratory, Idaho Falls, Idaho, grant.hawkes@inl.gov 2 Ceramatec Inc, Salt Lake City, Utah INTRODUCTION A three-dimensional computational fluid dynamics (CFD) model has been created to model high temperature co-electrolysis of steam and carbon dioxide in a planar solid oxide electrolyzer (SOE) using solid oxide fuel cell technology. A research program is under way at the Idaho National Laboratory (INL) to simultaneously address the research and scale-up issues associated with the implementation of planar solid-oxide electrolysis cell technology for syn-gas production from CO2 and steam. Various runs have been performed under different run conditions to help assess the performance of the SOE. This paper presents CFD results of this model compared with experimental results. The Idaho National Laboratory (INL), in conjunction with Ceramatec Inc. (Salt Lake City, USA) has been researching for several years the use of solid-oxide fuel cell technology to electrolyze steam for large-scale nuclear-powered hydrogen production. Now, an experimental research project is underway at the INL to produce syngas by simultaneously electrolyzing at high-temperature steam and carbon dioxide (CO2) using solid oxide fuel cell technology. A strong interest exists in the large-scale production of syn-gas from CO2 and steam to be reformed into a usable transportation fuel. If biomass is used as the carbon source, the overall process is climate neutral. Consequently, there is a high level of interest in production of syn-gas from CO2 and steam electrolysis. With the price of oil currently around $60 / barrel, synthetically-derived hydrocarbon fuels (synfuels) have become economical. Synfuels are typically produced from syngas – hydrogen (H2) and carbon monoxide (CO) -- using the Fischer-Tropsch process, discovered by Germany before World War II. High-temperature nuclear reactors have the potential for substantially increasing the efficiency of syn-gas production from CO2 and water, with no consumption of fossil fuels, and no production of greenhouse gases. Thermal CO2-splitting and water splitting for syn-gas production can be accomplished via high-temperature electrolysis, using high-temperature nuclear process heat and electricity. A high-temperature advanced nuclear reactor coupled with a high-efficiency high-temperature electrolyzer could achieve a competitive thermal-to-syn-gas conversion efficiency of 45 to 55%.

Grant Hawkes; James O'Brien; Carl Stoots; Stephen Herring; Joe Hartvigsen

2007-06-01T23:59:59.000Z

29

An Intercomparison Study of Simulation Models for Geologic Sequestration of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Intercomparison Study of Simulation Models Intercomparison Study of Simulation Models for Geologic Sequestration of CO2 Karsten Pruess (K_Pruess@lbl.gov; 510/486-6732) Chin-Fu Tsang (CFTsang@lbl.gov; 510/486-5782) Earth Sciences Division, E.O. Lawrence Berkeley National Laboratory One Cyclotron Rd., MS 90-1116, Berkeley, CA 94720, U.S.A. David H.-S. Law (Law@arc.ab.ca; 780/450-5034) Alberta Research Council 250 Karl Clark Rd., Edmonton, Alberta T6N 1E4, Canada Curtis M. Oldenburg (CMOldenburg@lbl.gov; 510/486-7419) Earth Sciences Division, E.O. Lawrence Berkeley National Laboratory One Cyclotron Rd., MS 90-1116, Berkeley, CA 94720, U.S.A. ABSTRACT Mathematical models and numerical simulation tools will play an important role in evaluating the feasibility of CO2 storage in subsurface reservoirs, such as brine aquifers,

30

Section 6. Deep Time: Modelling of Atmospheric CO2 and the Marine CO2-Carbonic Acid-Carbonate System  

Science Journals Connector (OSTI)

...original MAGic model (Arvidson et al., 2006) as revised in Arvidson et al. (2011). There are a number of Earth system models in the literature (e.g., Berner and Canfield 1989; Hansen and Wallmann, 2003; Berner 2004; Bergman et al...

Fred T. Mackenzie; Andreas J. Andersson

31

GEOCARBSULF: A combined model for Phanerozoic atmospheric O2 and CO2  

Science Journals Connector (OSTI)

A model for the combined long-term cycles of carbon and sulfur has been constructed which combines all the factors modifying weathering and degassing of the GEOCARB III model [Berner R.A., Kothavala Z., 2001. GEOCARB III: a revised model of atmospheric CO2 over Phanerozoic time. Am. J. Sci. 301, 182–204] for CO2 with rapid recycling and oxygen dependent carbon and sulfur isotope fractionation of an isotope mass balance model for O2 [Berner R.A., 2001. Modeling atmospheric O2 over Phanerozoic time. Geochim. Cosmochim. Acta 65, 685–694]. New isotopic data for both carbon and sulfur are used and new feedbacks are created by combining the models. Sensitivity analysis is done by determining (1) the effect on weathering rates of using rapid recycling (rapid recycling treats carbon and sulfur weathering in terms of young rapidly weathering rocks and older more slowly weathering rocks); (2) the effect on O2 of using different initial starting conditions; (3) the effect on O2 of using different data for carbon isotope fractionation during photosynthesis and alternative values of oceanic ?13C for the past 200 million years; (4) the effect on sulfur isotope fractionation and on O2 of varying the size of O2 feedback during sedimentary pyrite formation; (5) the effect on O2 of varying the dependence of organic matter and pyrite weathering on tectonic uplift plus erosion, and the degree of exposure of coastal lands by sea level change; (6) the effect on CO2 of adding the variability of volcanic rock weathering over time [Berner, R.A., 2006. Inclusion of the weathering of volcanic rocks in the GEOCARBSULF model. Am. J. Sci. 306 (in press)]. Results show a similar trend of atmospheric CO2 over the Phanerozoic to the results of GEOCARB III, but with some differences during the early Paleozoic and, for variable volcanic rock weathering, lower CO2 values during the Mesozoic. Atmospheric oxygen shows a major broad late Paleozoic peak with a maximum value of about 30% O2 in the Permian, a secondary less-broad peak centered near the Silurian/Devonian boundary, variation between 15% and 20% O2 during the Cambrian and Ordovician, a very sharp drop from 30% to 15% O2 at the Permo-Triassic boundary, and a more-or less continuous rise in O2 from the late Triassic to the present.

Robert A. Berner

2006-01-01T23:59:59.000Z

32

Modeling the Water Scrubbing Process and Energy Requirements for CO2 Capture to Upgrade Biogas to Biomethane  

Science Journals Connector (OSTI)

Water scrubbing is the most widely used technology for removing CO2 from biogas and landfill gas. This work developed a rate-based mass transfer model of the CO2–water system for upgrading biogas in a packed bed absorption column. The simulated results ...

William J. Nock; Mark Walker; Rimika Kapoor; Sonia Heaven

2014-07-10T23:59:59.000Z

33

A Phase-Partitioning Model for CO2–Brine Mixtures at Elevated Temperatures and Pressures: Application to CO2-Enhanced Geothermal Systems  

E-Print Network [OSTI]

Simulations of dry-out and halite precipitation due to CO 2a reasonable approximation up to halite saturation (Spycher

Spycher, Nicolas; Pruess, Karsten

2010-01-01T23:59:59.000Z

34

An Integral Model of a Liquid CO2 Jet Discharge into a Deep Stratified Ocean with Horizontal Currents  

Science Journals Connector (OSTI)

A numerical model to predict the physical-chemical behavior of a single jet discharging liquid CO2...is discussed. The hydrodynamics are based on an integral formulation of the jet in a deep stratified ocean havi...

Mills Soldate; Gilbert R. Stegen…

1994-01-01T23:59:59.000Z

35

D-optimal design for Rapid Assessment Model of CO2 flooding in high water cut oil reservoirs  

Science Journals Connector (OSTI)

Abstract Most of major oilfields in China have reached high water cut stage, but still, they contribute to more than 70% of domestic oil production. How to extract more oil from mature oilfields has become a hot topic in petroleum engineering. Carbon dioxide flooding is a win–win strategy because it can enhance oil recovery and simultaneously reduce CO2 emissions into the atmosphere. In order to evaluate the potentials of CO2 flooding in high water cut oil reservoirs, various 3-D heterogeneous geological models were built based on Guan 104 fault block in Dagang Oilfield to perform reservoir simulations. The D-optimal design was applied to build and verify the Rapid Assessment Model of CO2 flooding in high water cut oil reservoirs. Five quantitative variables were considered, including average horizontal permeability, permeability variation coefficient, ratio of vertical to horizontal permeability, net thickness of formation and percentage of recoverable reserves by water flooding. The process of weighting emphasized the contributions of linear terms, quadratic terms and first-order interactions of five quantitative parameters to improved recovery factor and Net Present Value of CO2 flooding. Using the Rapid Assessment Model of CO2 flooding in high water cut oil reservoirs, significant first-order interactions were sorted out and type curves were established and analyzed for the evaluation of technical and economic efficiency of CO2 flooding in high water cut oil reservoirs. Aimed at oil reservoirs with the similar geological conditions and fluid properties as Guan 104 fault block, the Rapid Assessment Model and type curves of CO2 flooding in high water cut oil reservoirs can be applied to predict improved recovery factor and Net Present Value of water-alternating-CO2 flooding at different conditions of reservoir parameters and development parameter. The approach could serve as a guide for the application and spread of CO2-EOR projects.

Zhaojie Song; Zhiping Li; Chunsheng Yu; Jirui Hou; Mingzhen Wei; Baojun Bai; Yunpeng Hu

2014-01-01T23:59:59.000Z

36

Modelling and forecasting fossil fuels, CO2 and electricity prices and their volatilities  

Science Journals Connector (OSTI)

In the current uncertain context that affects both the world economy and the energy sector, with the rapid increase in the prices of oil and gas and the very unstable political situation that affects some of the largest raw materials’ producers, there is a need for developing efficient and powerful quantitative tools that allow to model and forecast fossil fuel prices, CO2 emission allowances prices as well as electricity prices. This will improve decision making for all the agents involved in energy issues. Although there are papers focused on modelling fossil fuel prices, CO2 prices and electricity prices, the literature is scarce on attempts to consider all of them together. This paper focuses on both building a multivariate model for the aforementioned prices and comparing its results with those of univariate ones, in terms of prediction accuracy (univariate and multivariate models are compared for a large span of days, all in the first 4 months in 2011) as well as extracting common features in the volatilities of the prices of all these relevant magnitudes. The common features in volatility are extracted by means of a conditionally heteroskedastic dynamic factor model which allows to solve the curse of dimensionality problem that commonly arises when estimating multivariate GARCH models. Additionally, the common volatility factors obtained are useful for improving the forecasting intervals and have a nice economical interpretation. Besides, the results obtained and methodology proposed can be useful as a starting point for risk management or portfolio optimization under uncertainty in the current context of energy markets.

Carolina García-Martos; Julio Rodríguez; María Jesús Sánchez

2013-01-01T23:59:59.000Z

37

Integrated modeling of CO2 storage and leakage scenarios including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO2  

E-Print Network [OSTI]

feedbacks between fluid flow and heat transfer can occur oninterplay between fluid flow and heat transfer gives rise toof multiphase fluid flow and heat transfer. CO 2 rising

Pruess, K.

2012-01-01T23:59:59.000Z

38

Techno-economic modelling of CO2 capture systems for Australian industrial sources.  

E-Print Network [OSTI]

??Australia is recognising that carbon capture and storage (CCS) may be a feasible pathway for addressing increasing levels of CO2 emissions. This thesis presents a… (more)

Ho, Minh Trang Thi

2007-01-01T23:59:59.000Z

39

Extension of NORSOK CO2 corrosion prediction model for elbow geometry  

Science Journals Connector (OSTI)

Internal corrosion of flowlines and pipelines is inevitable when transporting oil and gas that contains corrosive species. The consequences of corrosion such as material failure, loss of production, plant shutdown, and environmental pollution result in extra cost that negatively affect the project economics. Early prediction of corrosion severity is, therefore, very important to propose proper measures to avoid or eliminate corrosion. The prediction is normally carried on using a selected model for corrosion prediction. One of these models is NORSOK model, an empirical model developed by NORSOK for CO2 corrosion prediction in straight pipes. Norsk Sokkels Konkuranseposisjon or, in English, The Competitive Standing of the Norwegian Offshore Sector (NORSOK) is number of standards developed by Norwegian industry groups covering different topics that related to offshore industry. In this paper, NORSOK model has been modified to make it applicable to elbows geometries by introducing the equivalent length concept. A friendly graphical user interface computational package is developed for corrosion prediction in both straight pipes and elbows. The package is validated against measured data and acceptable accuracy is attained.

Mysara Eissa Mohyaldin; Noaman Elkhatib; Mokhtar Che Ismail

2013-01-01T23:59:59.000Z

40

A Plant-Level Simulation Model for Evaluating CO2 Capture Options  

E-Print Network [OSTI]

- Resource use Environmental Emissions - Air, water, land Plant & Process Costs - Capital - O&M - COE #12;E · Subcritical · Supercritical · Ultra-supercritical Furnace Firing Types · Tangential · Wall · Cyclone Furnace: - Water gas shift + CO2 capture (pre-combustion) · CO2 Transport Options Pipelines (six U.S. regions

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Modeling Density Effects in CO2 Injection in Oil Reservoirs and A Case Study of CO2 Sequestration in a Qatari Saline Aquifer  

E-Print Network [OSTI]

(and density) of a reference component (usually methane) and other factors that are independent of mixture density. Therefore, modifying the shift parameter of CO2 does not affect the viscosity of the mixture. Table 2.1 – Fluid composition...

Ahmed, Tausif

2012-10-19T23:59:59.000Z

42

Modeling the CO2 Footprint of the U.S. Coal Mining Industry and the Potential Economic Costs of CO2 Legislation.  

E-Print Network [OSTI]

??The U.S. government is expected to develop a federal mandate which will aim tocurb CO2 emissions into the atmosphere. This legislation will most likely be… (more)

Aziz, AbdulMajeed

2010-01-01T23:59:59.000Z

43

Estimation of CO2 effluxes from suburban forest floor and grass using a process-based model  

Science Journals Connector (OSTI)

Abstract Carbon dioxide is an important greenhouse gas, and its atmospheric concentration has been predicted to increase in the future. The objective of this study was to quantify the soil CO2 efflux in a suburban area including mixed deciduous forest and grass by numerically modeling the CO2 transport through the soil profile. Three stations per land-cover (forest and grass) were selected at the Cub Hill site (MD, USA), where the US Forest Service operates an urban flux tower. Six VAISALA CO2 sensors (Vaisala Inc., Finland) per monitoring station were horizontally installed at 6 different depths (soil surface, 0.02, 0.05, 0.10, 0.20, and 0.30 m from the soil surface) in the mid of May, 2011. Temperature and volumetric soil moisture measurements were taken using thermistors and EC-5 sensors (Decagon devices, Pullman, WA, USA) that were installed at the same depths as the CO2 sensors except for the soil surface. These data were recorded every 10 min. To evaluate the numerical model (SOILCO2), CO2 efflux using the standard chamber method was measured once a week. The CO2 effluxes from the standard chamber method ranged from 3.32 × 10?9 to 7.28 × 10?8 m3 m?2 s?1 and 6.79 × 10?9 to 1.45 × 10?7 m3 m?2 s?1 for forest and grass, respectively. The CO2 effluxes from “bare” soil at the grass site varied with the range of 3.63 × 10?8 to 9.37 × 10?8 m3 m?2 s?1. The “pulse effect” (a rapid increase of CO2 concentrations right after rainfall events) in grass, where changes in soil moisture were larger than in the forest, was more apparent than in the forest. Diurnal patterns similar to those of temperature were observed from CO2 profiles in soils. The SOILCO2 model estimated the soil CO2 effluxes with coefficients of correlation of 0.64 and 0.76 at forest and grass, respectively, and root mean square error (RMSE) of 1.58 × 10?8 and 2.06 × 10?8 m3 m?2 s?1 for forest and grass, respectively. This study suggests that the SOILCO2 model can provide a better understanding of the contribution of the soil ecosystem to the carbon cycle in suburban environments including mixed deciduous forest and grass.

J.A. Chun; K. Szlavecz; M. Bernard; D. Ferrer; J. Hom; N. Saliendra

2014-01-01T23:59:59.000Z

44

Modeling the Direct Solar Conversion of CO2 to CO and O2  

Science Journals Connector (OSTI)

Ralph J. Price , David A. Morse , Steven L. Hardy , and Thomas H. Fletcher * ... If the path length, temperature, and concentration of CO2 are high enough, the photolysis reaction of sunlight with CO2 can also form CO and O.1 From an inlet stream of pure CO2, a product stream with 4?6 mol % CO was produced in a prototype unit using reflected sunlight as the heat source.2 This CO can then be separated and (a) used as a fuel or (b) converted to H2 through the water?gas shift reaction. ... Energy Fuels 1993, 7, 874. ...

Ralph J. Price; David A. Morse; Steven L. Hardy; Thomas H. Fletcher; Scott C. Hill; Reed J. Jensen

2004-04-20T23:59:59.000Z

45

Development of Chemical Model to Predict the Interactions between Supercritical CO2and Fluid, and Rocks in EGS Reservoirs  

Broader source: Energy.gov [DOE]

This project will develop a chemical model, based on existing models and databases, that is capable of simulating chemical reactions between supercritical (SC) CO2 and Enhanced Geothermal System (EGS) reservoir rocks of various compositions in aqueous, non-aqueous and 2-phase environments.

46

Mathematical models as tools for probing long-term safety of CO2 storage  

E-Print Network [OSTI]

between rocks and fluids, and heat transfer. Much currentFeedback between Fluid Flow and Heat Transfer, Geophys. Res.Pruess, K. On CO2 Fluid Flow and Heat Transfer Behavior in

Pruess, Karsten

2010-01-01T23:59:59.000Z

47

CO2 laser CVD of a-Si:H: in situ gas analysis and model calculations  

Science Journals Connector (OSTI)

and disilane Si2H6 induced by continuous wave CO2 laser irradiation has been investigated under the conditions of chemical vapor deposition (CVD) of amorphous hydrogenated silicon a-Si:H. At the very position of...

F. Falk; G. Mollekopf; H. Stafast

1998-11-01T23:59:59.000Z

48

Simple model to estimate the contribution of atmospheric CO2 to the Earth’s greenhouse effect  

Science Journals Connector (OSTI)

We show how the CO2 contribution to the Earth’s greenhouse effect can be estimated from relatively simple physical considerations and readily available spectroscopic data. In particular we present a calculation of the “climate sensitivity” (that is the increase in temperature caused by a doubling of the concentration of CO2) in the absence of feedbacks. Our treatment highlights the important role played by the frequency dependence of the CO2absorptionspectrum. For pedagogical purposes we provide two simple models to visualize different ways in which the atmosphere might return infrared radiation back to the Earth. The more physically realistic model based on the Schwarzschild radiative transfer equations uses as input an approximate form of the atmosphere’s temperature profile and thus includes implicitly the effect of heat transfer mechanisms other than radiation.

Derrek J. Wilson; Julio Gea-Banacloche

2012-01-01T23:59:59.000Z

49

Application of the perturbed chain-SAFT equation of state for modeling CO2 solubility in aqueous monoethanolamine solutions  

Science Journals Connector (OSTI)

Abstract CO2 removal by treatment of acid gases by aqueous alkanolamines is a very significant operation from industrial and environmental point of view. To attain a comprehensive thermodynamic model of the CO2–MEA–H2O in a wide range of temperature and CO2 partial pressures, Perturbed Chain-Statistical Associating Fluid Theory (PC-SAFT) EOS is applied to predict the absorption of carbon dioxide by MEA (MonoEthanolAmine). In order to find the best association scheme for MEA in PC-SAFT EOS, three pure parameter sets for MEA in the 2B, 3B and 4C association schemes are determined in temperature range 303.15–443.15 K. Temperature independent binary interaction parameters have been adjusted in the VLE calculation for three schemes of MEA and two schemes of water. Binary VLE calculations show the 3B scheme for MEA and the 4C scheme for water indicate the best prediction in the MEA–H2O system. Excess enthalpy data for aqueous MEA are predicted by kij, which has been adjusted in VLE calculations. The 3B scheme for MEA and the 4C scheme for water also are used to find CO2 solubility in the ternary system of CO2–MEA–H2O system. Ideal Smith–Missen algorithm has been applied to find the concentration of all species in chemical equilibrium. Results show the 3B association scheme for MEA and the 4C association scheme for water in PC-SAFT EOS have better agreement with binary and ternary experimental data. PC-SAFT EOS is able to anticipate the CO2 solubility in the CO2–MEA–H2O system without any regression in the ternary system. The CO2 solubility in ternary system is compared to e-NRTL as a common thermodynamics model. The average absolute partial pressure deviations for PC-SAFT and e-NRTL are calculated around 36% and 42%, respectively.

Sadjad Fakouri Baygi; Hassan Pahlavanzadeh

2014-01-01T23:59:59.000Z

50

A shallow subsurface controlled release facility in Bozeman, Montana, USA, for testing near surface CO2 detection techniques and transport models  

SciTech Connect (OSTI)

A facility has been constructed to perform controlled shallow releases of CO2 at flow rates that challenge near surface detection techniques and can be scalable to desired retention rates of large scale CO2 storage projects. Preinjection measurements were made to determine background conditions and characterize natural variability at the site. Modeling of CO2 transport and concentration in saturated soil and the vadose zone was also performed to inform decisions about CO2 release rates and sampling strategies. Four releases of CO2 were carried out over the summer field seasons of 2007 and 2008. Transport of CO2 through soil, water, plants, and air was studied using near surface detection techniques. Soil CO2 flux, soil gas concentration, total carbon in soil, water chemistry, plant health, net CO2 flux, atmospheric CO2 concentration, movement of tracers, and stable isotope ratios were among the quantities measured. Even at relatively low fluxes, most techniques were able to detect elevated levels of CO2 in the soil, atmosphere, or water. Plant stress induced by CO2 was detectable above natural seasonal variations.

Spangler, Lee H.; Dobeck, Laura M.; Repasky, Kevin S.; Nehrir, Amin R.; Humphries, Seth D.; Barr, Jamie L.; Keith, Charlie J.; Shaw, Joseph A.; Rouse, Joshua H.; Cunningham, Alfred B.; Benson, Sally M.; Oldenburg, Curtis M.; Lewicki, Jennifer L.; Wells, Arthur W.; Diehl, J. R.; Strazisar, Brian; Fessenden, Julianna; Rahn, Thom A.; Amonette, James E.; Barr, Jonathan L.; Pickles, William L.; Jacobson, James D.; Silver, Eli A.; Male, Erin J.; Rauch, Henry W.; Gullickson, Kadie; Trautz, Robert; Kharaka, Yousif; Birkholzer, Jens; Wielopolski, Lucien

2010-03-01T23:59:59.000Z

51

Experimental study and kinetic model of monoethanolamine oxidative and thermal degradation for post-combustion CO2 capture  

Science Journals Connector (OSTI)

Abstract In the present work, a kinetic model is proposed for the prediction of amine solvent degradation in the post-combustion CO2 capture process. Solvent degradation combined to the emission of degradation products represents one of the main operational drawbacks of this process. It induces additional costs and it impacts the process efficiency and its environmental balance. In the present work, degradation is studied under accelerated conditions for the case of monoethanolamine solvent (MEA). The influence of the temperature and of the O2 and CO2 concentrations in the gas feed are studied, and their effect on the MEA loss and the emission of degradation products is quantified. Based on the experimental results, a kinetic model for both oxidative and thermal degradation of MEA is proposed and compared to previous attempts to model MEA degradation. The present kinetic model may be further used to develop a practical tool assessing solvent degradation in large-scale capture plants.

Grégoire Léonard; Dominique Toye; Georges Heyen

2014-01-01T23:59:59.000Z

52

Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2  

SciTech Connect (OSTI)

The objective of this project was to perform CO2 data syntheses and modeling activities to address two central questions: 1) how much has the seasonal cycle in atmospheric CO2 at northern high latitudes changed since the 1960s, and 2) how well do prognostic biospheric models represent these changes. This project also supported the continuation of the Scripps time series of CO2 isotopes and concentration at ten baseline stations distributed globally.

Keeling, Ralph [UCSD-SIO

2014-12-12T23:59:59.000Z

53

A model comparison initiative for a CO2 injection field test: An introduction to Sim-SEQ  

E-Print Network [OSTI]

gas reservoir under CO 2 flood since. The tests are managedwith Denbury’s commercial flood (Hovorka et al. , 2011), theto the reservoir under CO 2 flood. The DAS includes one CO 2

Mukhopadhyay, S.

2013-01-01T23:59:59.000Z

54

Modelling of CO2 content in the atmosphere until 2300: influence of energy intensity of gross domestic product and carbon intensity of energy  

Science Journals Connector (OSTI)

The study provides a model of CO2 content in the atmosphere based on the global carbon cycle and the Kaya identity. The influences of: 1) energy intensity of GDP; 2) carbon intensity of energy on CO2 trajectories are given under four scenarios. The results from the most optimistic and technologically challenging scenario show that the atmospheric CO2 concentration can stabilise at 610 ppmv. It is also shown that the annual growth rates of atmospheric CO2 peak for all the scenarios before 2100 due to the expected world population peak in 2075 and the large share of fossil fuel energy.

Wojciech M. Budzianowski

2013-01-01T23:59:59.000Z

55

Data Assimilation Tools for CO2 Reservoir Model Development – A Review of Key Data Types, Analyses, and Selected Software  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) has embarked on an initiative to develop world-class capabilities for performing experimental and computational analyses associated with geologic sequestration of carbon dioxide. The ultimate goal of this initiative is to provide science-based solutions for helping to mitigate the adverse effects of greenhouse gas emissions. This Laboratory-Directed Research and Development (LDRD) initiative currently has two primary focus areas—advanced experimental methods and computational analysis. The experimental methods focus area involves the development of new experimental capabilities, supported in part by the U.S. Department of Energy’s (DOE) Environmental Molecular Science Laboratory (EMSL) housed at PNNL, for quantifying mineral reaction kinetics with CO2 under high temperature and pressure (supercritical) conditions. The computational analysis focus area involves numerical simulation of coupled, multi-scale processes associated with CO2 sequestration in geologic media, and the development of software to facilitate building and parameterizing conceptual and numerical models of subsurface reservoirs that represent geologic repositories for injected CO2. This report describes work in support of the computational analysis focus area. The computational analysis focus area currently consists of several collaborative research projects. These are all geared towards the development and application of conceptual and numerical models for geologic sequestration of CO2. The software being developed for this focus area is referred to as the Geologic Sequestration Software Suite or GS3. A wiki-based software framework is being developed to support GS3. This report summarizes work performed in FY09 on one of the LDRD projects in the computational analysis focus area. The title of this project is Data Assimilation Tools for CO2 Reservoir Model Development. Some key objectives of this project in FY09 were to assess the current state-of-the-art in reservoir model development, the data types and analyses that need to be performed in order to develop and parameterize credible and robust reservoir simulation models, and to review existing software that is applicable to these analyses. This report describes this effort and highlights areas in which additional software development, wiki application extensions, or related GS3 infrastructure development may be warranted.

Rockhold, Mark L.; Sullivan, E. C.; Murray, Christopher J.; Last, George V.; Black, Gary D.

2009-09-30T23:59:59.000Z

56

CO2 sequestration | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 sequestration CO2 sequestration Leads No leads are available at this time. Low-Temperature Carbon Monoxide Oxidation Catalysed by Regenerable Atomically Dispersed Palladium on...

57

CO2 exposure at pressure impacts metabolism and stress responses in the model sulfate-reducing bacterium Desulfovibrio vulgaris strain Hildenborough  

SciTech Connect (OSTI)

Geologic carbon dioxide (CO2) sequestration drives physical and geochemical changes in deep subsurface environments that impact indigenous microbial activities. The combined effects of pressurized CO2 on a model sulfate-reducing microorganism, Desulfovibrio vulgaris, have been assessed using a suite of genomic and kinetic measurements. Novel high-pressure NMR time-series measurements using 13C-lactate were used to track D. vulgaris metabolism. We identified cessation of respiration at CO2 pressures of 10 bar, 25 bar, 50 bar, and 80 bar. Concurrent experiments using N2 as the pressurizing phase had no negative effect on microbial respiration, as inferred from reduction of sulfate to sulfide. Complementary pressurized batch incubations and fluorescence microscopy measurements supported NMR observations, and indicated that non-respiring cells were mostly viable at 50 bar CO2 for at least four hours, and at 80 bar CO2 for two hours. The fraction of dead cells increased rapidly after four hours at 80 bar CO2. Transcriptomic (RNA-Seq) measurements on mRNA transcripts from CO2-incubated biomass indicated that cells up-regulated the production of certain amino acids (leucine, isoleucine) following CO2 exposure at elevated pressures, likely as part of a general stress response. Evidence for other poorly understood stress responses were also identified within RNA-Seq data, suggesting that while pressurized CO2 severely limits the growth and respiration of D. vulgaris cells, biomass retains intact cell membranes at pressures up to 80 bar CO2. Together, these data show that geologic sequestration of CO2 may have significant impacts on rates of sulfate reduction in many deep subsurface environments where this metabolism is a key respiratory process.

Wilkins, Michael J.; Hoyt, David W.; Marshall, Matthew J.; Alderson, Paul A.; Plymale, Andrew E.; Markillie, Lye Meng; Tucker, Abigail E.; Walter, Eric D.; Linggi, Bryan E.; Dohnalkova, Alice; Taylor, Ronald C.

2014-09-01T23:59:59.000Z

58

A model comparison initiative for a CO2 injection field test: An introduction to Sim-SEQ  

E-Print Network [OSTI]

in the water leg of a CO 2 -EOR field with a strong waterwater leg of an active CO 2 -EOR field with a strong waterthe presence of an active EOR operation nearby may also

Mukhopadhyay, S.

2013-01-01T23:59:59.000Z

59

Modeling the resolution of inexpensive, novel non-seismic geophysical monitoring tools to monitor CO2 injection into coal beds  

E-Print Network [OSTI]

of enhanced oil recovery (EOR) projects showed them to bestudy of proposed CO 2 EOR/sequestration of the SchraderAbbreviations CBM CO 2 Ex Ey EM EOR Im ?Gal NIST Re Rx S Tx

Gasperikova, E.

2010-01-01T23:59:59.000Z

60

Time-lapse seismic modeling and production data assimilation for enhanced oil recovery and CO2 sequestration  

E-Print Network [OSTI]

Production from a hydrocarbon reservoir is typically supported by water or carbon dioxide (CO2) injection. CO2 injection into hydrocarbon reservoirs is also a promising solution for reducing environmental hazards from the release of green house...

Kumar, Ajitabh

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Modeling the resolution of inexpensive, novel non-seismic geophysical monitoring tools to monitor CO2 injection into coal beds  

E-Print Network [OSTI]

Plasynski, S. , 2008, Advancing Coal-Based Power Generationto monitor CO 2 injection into Coal Beds as a part of theanalysis for CO 2 movement in coal beds was based on the

Gasperikova, E.

2010-01-01T23:59:59.000Z

62

Drake Passage Oceanic pCO2: Evaluating CMIP5 Coupled CarbonClimate Models Using in situ Observations  

E-Print Network [OSTI]

net uptake of anthropogenic and natural CO2 is thus an important factor controlling future CO2 levels the sea-to-air CO2 flux but also upwells DIC-rich water to the surface and drives strong equator- ward. DIC and alkalinity are controlled by the air­sea gas exchange, horizontal and vertical transport

Sprintall, Janet

63

Rate-Based Modeling of Reactive Absorption of CO2 and H2S into Aqueous Methyldiethanolamine  

E-Print Network [OSTI]

in the liquid phase. This framework was applied to the selective absorption of H2S from fuel gas containing CO2 primarily by physical absorption. Gas-film resistance is never significant for CO2 absorption. For H2S enhancement factors for the gas-liquid reactions. In the application to the removal of CO2 using alkanolamines

Rochelle, Gary T.

64

Drake Passage Oceanic pCO2: Evaluating CMIP5 Coupled Carbon–Climate Models Using in situ Observations  

Science Journals Connector (OSTI)

Surface water partial pressure of CO2 (pCO2) variations in Drake Passage are examined using decade-long underway shipboard measurements. North of the Polar Front (PF), the observed pCO2 shows a seasonal cycle that peaks annually in August and ...

ChuanLi Jiang; Sarah T. Gille; Janet Sprintall; Colm Sweeney

2014-01-01T23:59:59.000Z

65

CO2 interaction with geomaterials.  

SciTech Connect (OSTI)

This work compares the sorption and swelling processes associated with CO2-coal and CO2-clay interactions. We investigated the mechanisms of interaction related to CO2 adsortion in micropores, intercalation into sub-micropores, dissolution in solid matrix, the role of water, and the associated changes in reservoir permeability, for applications in CO2 sequestration and enhanced coal bed methane recovery. The structural changes caused by CO2 have been investigated. A high-pressure micro-dilatometer was equipped to investigate the effect of CO2 pressure on the thermoplastic properties of coal. Using an identical dilatometer, Rashid Khan (1985) performed experiments with CO2 that revealed a dramatic reduction in the softening temperature of coal when exposed to high-pressure CO2. A set of experiments was designed for -20+45-mesh samples of Argonne Premium Pocahontas No.3 coal, which is similar in proximate and ultimate analysis to the Lower Kittanning seam coal that Khan used in his experiments. No dramatic decrease in coal softening temperature has been observed in high-pressure CO2 that would corroborate the prior work of Khan. Thus, conventional polymer (or 'geopolymer') theories may not be directly applicable to CO2 interaction with coals. Clays are similar to coals in that they represent abundant geomaterials with well-developed microporous structure. We evaluated the CO2 sequestration potential of clays relative to coals and investigated the factors that affect the sorption capacity, rates, and permanence of CO2 trapping. For the geomaterials comparison studies, we used source clay samples from The Clay Minerals Society. Preliminary results showed that expandable clays have CO2 sorption capacities comparable to those of coal. We analyzed sorption isotherms, XRD, DRIFTS (infrared reflectance spectra at non-ambient conditions), and TGA-MS (thermal gravimetric analysis) data to compare the effects of various factors on CO2 trapping. In montmorillonite, CO2 molecules may remain trapped for several months following several hours of exposure to high pressure (supercritical conditions), high temperature (above boiling point of water) or both. Such trapping is well preserved in either inert gas or the ambient environment and appears to eventually result in carbonate formation. We performed computer simulations of CO2 interaction with free cations (normal modes of CO2 and Na+CO2 were calculated using B3LYP / aug-cc-pVDZ and MP2 / aug-cc-pVDZ methods) and with clay structures containing interlayer cations (MD simulations with Clayff potentials for clay and a modified CO2 potential). Additionally, interaction of CO2 with hydrated Na-montmorillonite was studied using density functional theory with dispersion corrections. The sorption energies and the swelling behavior were investigated. Preliminary modeling results and experimental observations indicate that the presence of water molecules in the interlayer region is necessary for intercalation of CO2. Our preliminary conclusion is that CO2 molecules may intercalate into interlayer region of swelling clay and stay there via coordination to the interlayer cations.

Guthrie, George D. (U.S. Department of Energy, Pittsburgh, PA); Al-Saidi, Wissam A. (University of Pittsburgh, Pittsburgh, PA); Jordan, Kenneth D. (University of Pittsburgh, Pittsburgh, PA); Voora, Vamsee, K. (University of Pittsburgh, Pittsburgh, PA); Romanov, Vyacheslav N. (U.S. Department of Energy, Pittsburgh, PA); Lopano, Christina L (U.S. Department of Energy, Pittsburgh, PA); Myshakin, Eugene M. (URS Corporation, Pittsburgh, PA); Hur, Tae Bong (University of Pittsburgh, Pittsburgh, PA); Warzinski, Robert P. (U.S. Department of Energy, Pittsburgh, PA); Lynn, Ronald J. (URS Corporation, Pittsburgh, PA); Howard, Bret H. (U.S. Department of Energy, Pittsburgh, PA); Cygan, Randall Timothy

2010-09-01T23:59:59.000Z

66

Experiment-based modeling of geochemical interactions in CO2-based geothermal systems  

E-Print Network [OSTI]

and effects on fluid and heat transfer, and (3) determinesome favorable fluid dynamics and heat transfer properties2008) for modeling heat transfer and fluid dynamics of a CO

Jung, Y.

2014-01-01T23:59:59.000Z

67

Dynamic Modeling and Validation of a Precombustion CO2 Capture Plant for Control Design  

Science Journals Connector (OSTI)

The models have been implemented by means of the Modelica language into an open source software library. ... Fritzson, P. Principles of Object-Oriented Modeling and Simulation with Modelica 3.3: A Cyber-Physical Approach; Wiley-IEEE Press: Hoboken, NJ, in press. ...

Carsten Trapp; Francesco Casella; Piero Colonna

2014-07-23T23:59:59.000Z

68

ECONOMIC MODELING OF CO2 CAPTURE AND SEQUESTRATION Sean Biggs, Howard Herzog, John Reilly, Henry Jacoby  

E-Print Network [OSTI]

of carbon capture and sequestration technologies using the MIT Emissions Prediction and Policy Analysis (EPPA) model. We model two of the most promising carbon capture and sequestration technologies, one, technological, and social issues of carbon capture and sequestration technologies. In 1997, the President

69

Integrated modeling of CO2 storage and leakage scenarios including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO2  

SciTech Connect (OSTI)

Storage of CO{sub 2} in saline aquifers is intended to be at supercritical pressure and temperature conditions, but CO{sub 2} leaking from a geologic storage reservoir and migrating toward the land surface (through faults, fractures, or improperly abandoned wells) would reach subcritical conditions at depths shallower than 500-750 m. At these and shallower depths, subcritical CO{sub 2} can form two-phase mixtures of liquid and gaseous CO{sub 2}, with significant latent heat effects during boiling and condensation. Additional strongly non-isothermal effects can arise from decompression of gas-like subcritical CO{sub 2}, the so-called Joule-Thomson effect. Integrated modeling of CO{sub 2} storage and leakage requires the ability to model non-isothermal flows of brine and CO{sub 2} at conditions that range from supercritical to subcritical, including three-phase flow of aqueous phase, and both liquid and gaseous CO{sub 2}. In this paper, we describe and demonstrate comprehensive simulation capabilities that can cope with all possible phase conditions in brine-CO{sub 2} systems. Our model formulation includes: (1) an accurate description of thermophysical properties of aqueous and CO{sub 2}-rich phases as functions of temperature, pressure, salinity and CO{sub 2} content, including the mutual dissolution of CO{sub 2} and H{sub 2}O; (2) transitions between super- and subcritical conditions, including phase change between liquid and gaseous CO{sub 2}; (3) one-, two-, and three-phase flow of brine-CO{sub 2} mixtures, including heat flow; (4) non-isothermal effects associated with phase change, mutual dissolution of CO{sub 2} and water, and (de-) compression effects; and (5) the effects of dissolved NaCl, and the possibility of precipitating solid halite, with associated porosity and permeability change. Applications to specific leakage scenarios demonstrate that the peculiar thermophysical properties of CO{sub 2} provide a potential for positive as well as negative feedbacks on leakage rates, with a combination of self-enhancing and self-limiting effects. Lower viscosity and density of CO{sub 2} as compared to aqueous fluids provides a potential for self-enhancing effects during leakage, while strong cooling effects from liquid CO{sub 2} boiling into gas, and from expansion of gas rising towards the land surface, act to self-limit discharges. Strong interference between fluid phases under three-phase conditions (aqueous - liquid CO{sub 2} - gaseous CO{sub 2}) also tends to reduce CO{sub 2} fluxes. Feedback on different space and time scales can induce non-monotonic behavior of CO{sub 2} flow rates.

Pruess, K.

2011-05-15T23:59:59.000Z

70

A Statistical Model to Assess Indirect CO2 Emissions of the UAE Residential Sector  

E-Print Network [OSTI]

. Determination of household energy using ?fingerprints? from energy billing data. Energy Research 10(4), pp: 393?405. [5] Snakin JPA, 2000. An engineering model for heating energy and emission assessment The case of North Karelia, Finland. Applied Energy...

Radhi, H.; Fikry, F.

2010-01-01T23:59:59.000Z

71

Numerical Modeling Studies of The Dissolution-Diffusion-Convection ProcessDuring CO2 Storage in Saline Aquifers  

SciTech Connect (OSTI)

For purposes of geologic storage, CO2 would be injected into saline formations at supercritical temperature and pressure conditions, and would form a separate phase that is immiscible with the aqueous phase (brine). At typical subsurface temperature and pressure conditions, supercritical CO2 (scCO2) has lower density than the aqueous phase and would experience an upward buoyancy force. Accordingly, the CO2 is expected to accumulate beneath the caprock at the top of the permeable interval, and could escape from the storage formation wherever (sub-)vertical pathways are available, such as fractures or faults through the caprock, or improperly abandoned wells. Over time, an increasing fraction of CO2 may dissolve in the aqueous phase, and eventually some of the aqueous CO2 may react with rock minerals to form poorly soluble carbonates. Dissolution into the aqueous phase and eventual sequestration as carbonates are highly desirable processes as they would increase permanence and security of storage. Dissolution of CO2 will establish phase equilibrium locally between the overlying CO2 plume and the aqueous phase beneath. If the aqueous phase were immobile, CO2 dissolution would be limited by the rate at which molecular diffusion can remove dissolved CO2 from the interface between CO2-rich and aqueous phases. This is a slow process. However, dissolution of CO2 is accompanied by a small increase in the density of the aqueous phase, creating a negative buoyancy force that can give rise to downward convection of CO2-rich brine, which in turn can greatly accelerate CO2 dissolution. This study explores the process of dissolution-diffusion-convection (DDC), using high-resolution numerical simulation. We find that geometric features of convection patterns are very sensitive to small changes in problem specifications, reflecting self-enhancing feedbacks and the chaotic nature of the process. Total CO2 dissolution rates on the other hand are found to be quite robust against modest changes in problem parameters, and are essentially constant as long as no dissolved CO2 reaches the lower boundary of the system.

Pruess, Karsten; Zhang, Keni

2008-11-17T23:59:59.000Z

72

A fixed-bed reactor modeling study on the methanation of CO2  

Science Journals Connector (OSTI)

Abstract The methanation of carbon dioxide has gained renewed interest during the last years as a possible technology to synthesize a feasible chemical energy carrier. This modeling study aims at a basic understanding of the aspects relevant for designing an externally cooled fixed-bed reactor for the methanation of a pure, stoichiometric feed gas. It is shown that the reaction rates and the exothermicity (?H° = ?165 kJ/mol) prevent a fixed-bed reactor of technical dimensions to be operated at high conversions without runaway of the reactor. The model predictions of differently detailed pseudo-homogeneous reactor models and a heterogeneous reactor model where the intraparticle transport of mass is described according to a dusty-gas approach are compared to assess the needed level of detail in terms of modeling the heat transfer, fluid flow characteristics and transport resistances on the pellet scale. Under specific conditions, intraparticle mass transfer and external heat transfer need to be considered for describing the temperature and concentration profiles adequately. The study is completed by modeling a fixed-bed membrane reactor as an example of a structured reactor that offers improved temperature control by separated and controlled feeding of hydrogen and carbon dioxide.

David Schlereth; Olaf Hinrichsen

2014-01-01T23:59:59.000Z

73

Integrated Reflection Seismic Monitoring and Reservoir Modeling for Geologic CO2 Sequestration  

SciTech Connect (OSTI)

The US DOE/NETL CCS MVA program funded a project with Fusion Petroleum Technologies Inc. (now SIGMA) to model the proof of concept of using sparse seismic data in the monitoring of CO{sub 2} injected into saline aquifers. The goal of the project was to develop and demonstrate an active source reflection seismic imaging strategy based on deployment of spatially sparse surface seismic arrays. The primary objective was to test the feasibility of sparse seismic array systems to monitor the CO{sub 2} plume migration injected into deep saline aquifers. The USDOE/RMOTC Teapot Dome (Wyoming) 3D seismic and reservoir data targeting the Crow Mountain formation was used as a realistic proxy to evaluate the feasibility of the proposed methodology. Though the RMOTC field has been well studied, the Crow Mountain as a saline aquifer has not been studied previously as a CO{sub 2} sequestration (storage) candidate reservoir. A full reprocessing of the seismic data from field tapes that included prestack time migration (PSTM) followed by prestack depth migration (PSDM) was performed. A baseline reservoir model was generated from the new imaging results that characterized the faults and horizon surfaces of the Crow Mountain reservoir. The 3D interpretation was integrated with the petrophysical data from available wells and incorporated into a geocellular model. The reservoir structure used in the geocellular model was developed using advanced inversion technologies including Fusion's ThinMAN{trademark} broadband spectral inversion. Seal failure risk was assessed using Fusion's proprietary GEOPRESS{trademark} pore pressure and fracture pressure prediction technology. CO{sub 2} injection was simulated into the Crow Mountain with a commercial reservoir simulator. Approximately 1.2MM tons of CO{sub 2} was simulated to be injected into the Crow Mountain reservoir over 30 years and subsequently let 'soak' in the reservoir for 970 years. The relatively small plume developed from this injection was observed migrating due to gravity to the apexes of the double anticline in the Crow Mountain reservoir of the Teapot dome. Four models were generated from the reservoir simulation task of the project which included three saturation models representing snapshots at different times during and after simulated CO{sub 2} injection and a fully saturated CO{sub 2} fluid substitution model. The saturation models were used along with a Gassmann fluid substitution model for CO{sub 2} to perform fluid volumetric substitution in the Crow Mountain formation. The fluid substitution resulted in a velocity and density model for the 3D volume at each saturation condition that was used to generate a synthetic seismic survey. FPTI's (Fusion Petroleum Technologies Inc.) proprietary SeisModelPRO{trademark} full acoustic wave equation software was used to simulate acquisition of a 3D seismic survey on the four models over a subset of the field area. The simulated acquisition area included the injection wells and the majority of the simulated plume area.

John Rogers

2011-12-31T23:59:59.000Z

74

Numerical Modeling of Hydrate Formation in Sand Sediment Simulating Sub-Seabed CO2 Storage in the form of Gas Hydrate  

Science Journals Connector (OSTI)

Abstract Among several methods for CO2 capture and storage, we focus on CO2 sequestration in the form of gas hydrate under the seafloor, mainly for many sequestration sites offshore Japan and for little risk of CO2 leakage from the sediment. However, it is difficult to evaluate the precise storage potential and cost of this method due to the lack of the relevant information. Here, in order to do feasibility studies of this technique so as to make an effective storage method, we made a 3-dimentional gas water flow simulator with kinetic hydrate formation. The new design of CO2 hydrate formation in porous media under two-phase flow condition was implemented in this simulator, and unknown parameters in necessary mathematical models for gas-water flow in sand sediments were verified from the comparison between the results of the numerical simulations and the experimental measurements from the previous study.

Takuya Nakashima; Toru Sato; Masayuki Inui

2013-01-01T23:59:59.000Z

75

A Simplified 1-D Model for Calculating CO2 Leakage through Conduits  

SciTech Connect (OSTI)

In geological CO{sub 2} storage projects, a cap rock is generally needed to prevent CO{sub 2} from leaking out of the storage formation. However, the injected CO{sub 2} may still encounter some discrete flow paths such as a conductive well or fault (here referred to as conduits) through the cap rock allowing escape of CO{sub 2} from the storage formation. As CO{sub 2} migrates upward, it may migrate into the surrounding formations. The amount of mass that is lost to the formation is called attenuation. This report describes a simplified model to calculate the CO{sub 2} mass flux at different locations of the conduit and the amount of attenuation to the surrounding formations. From the comparison among the three model results, we can conclude that the steady-state conduit model (SSCM) provides a more accurate solution than the PMC at a given discretization. When there is not a large difference between the permeability of the surrounding formation and the permeability of the conduits, and there is leak-off at the bottom formation (the formation immediately above the CO{sub 2} plume), a fine discretization is needed for an accurate solution. Based on this comparison, we propose to use the SSCM in the rapid prototype for now given it does not produce spurious oscillations, and is already in FORTRAN and therefore can be easily made into a dll for use in GoldSim.

Zhang, Y.; Oldenburg, C.M.

2011-02-15T23:59:59.000Z

76

Final report on "Modeling Diurnal Variations of California Land Biosphere CO2 Fluxes"  

SciTech Connect (OSTI)

In Mediterranean climates, the season of water availability (winter) is out of phase with the season of light availability and atmospheric demand for moisture (summer). Multi-year half-hourly observations of sap flow velocities in 26 evergreen trees in a small watershed in Northern California show that different species of evergreen trees have different seasonalities of transpiration: Douglas-firs respond immediately to the first winter rain, while Pacific madrones have peak transpiration in the dry summer. Using these observations, we have derived species-specific parameterization of normalized sap flow velocities in terms of insolation, vapor pressure deficit and near-surface soil moisture. A simple 1-D boundary layer model showed that afternoon temperatures may be higher by 1 degree Celsius in an area with Douglas-firs than with Pacific madrones. The results point to the need to develop a new representation of subsurface moisture, in particular pools beneath the organic soil mantle and the vadose zone. Our ongoing and future work includes coupling our new parameterization of transpiration with new representation of sub-surface moisture in saprolite and weathered bedrock. The results will be implemented in a regional climate model to explore vegetation-climate feedbacks, especially in the dry season.

Fung, Inez

2014-07-28T23:59:59.000Z

77

West Pearl Queen CO2 sequestration pilot test and modeling project 2006-2008.  

SciTech Connect (OSTI)

The West Pearl Queen is a depleted oil reservoir that has produced approximately 250,000 bbl of oil since 1984. Production had slowed prior to CO{sub 2} injection, but no previous secondary or tertiary recovery methods had been applied. The initial project involved reservoir characterization and field response to injection of CO{sub 2}; the field experiment consisted of injection, soak, and venting. For fifty days (December 20, 2002, to February 11, 2003) 2090 tons of CO{sub 2} were injected into the Shattuck Sandstone Member of the Queen Formation at the West Pearl Queen site. This technical report highlights the test results of the numerous research participants and technical areas from 2006-2008. This work included determination of lateral extents of the permeability units using outcrop observations, core results, and well logs. Pre- and post-injection 3D seismic data were acquired. To aid in interpreting seismic data, we performed numerical simulations of the effects of CO{sub 2} replacement of brine where the reservoir model was based upon correlation lengths established by the permeability studies. These numerical simulations are not intended to replicate field data, but to provide insight of the effects of CO{sub 2}.

Engler, Bruce Phillip; Cooper, Scott Patrick; Symons, Neill Phillip; Bartel, Lewis Clark; Byrer, Charles (National Energy Laboratory, Morgantown, WV); Elbring, Gregory Jay; McNemar, Andrea (National Energy Laboratory, Morgantown, WV); Aldridge, David Franklin; Lorenz, John Clay

2008-08-01T23:59:59.000Z

78

Synthesis and Evaluation of CO2 Thickeners Designed with Molecular Modeling  

SciTech Connect (OSTI)

The objective of this research was to use molecular modeling techniques, coupled with our prior experimental results, to design, synthesize and evaluate inexpensive, non-fluorous carbon dioxide thickening agents. The first type of thickener that was considered was associating polymers. Typically, these thickeners are copolymers that contain a highly CO{sub 2}-philic monomer, and a small concentration of a CO{sub 2}-phobic associating monomer. Yale University was solely responsible for the synthesis of a second type of thickener; small, hydrogen bonding compounds. These molecules have a core that contains one or more hydrogen-bonding groups, such as urea or amide groups. Non-fluorous, CO{sub 2}-philic functional groups were attached to the hydrogen bonding core of the compound to impart CO{sub 2} stability and macromolecular stability to the linear 'stack' of these compounds. The third type of compound initially considered for this investigation was CO{sub 2}-soluble surfactants. These surfactants contain conventional ionic head groups and composed of CO{sub 2}-philic oligomers (short polymers) or small compounds (sugar acetates) previously identified by our research team. Mobility reduction could occur as these surfactant solutions contacted reservoir brine and formed mobility control foams in-situ. The vast majority of the work conducted in this study was devoted to the copolymeric thickeners and the small hydrogen-bonding thickeners; these thickeners were intended to dissolve completely in CO{sub 2} and increase the fluid viscosity. A small but important amount of work was done establishing the groundwork for CO{sub 2}-soluble surfactants that reduced mobility by generating foams in-situ as the CO{sub 2}+surfactant solution mixed with in-situ brine.

Robert Enick; Erick Beckman; J. Karl Johnson

2009-08-31T23:59:59.000Z

79

Modeling basin- and plume-scale processes of CO2 storage for full-scale deployment  

SciTech Connect (OSTI)

Integrated modeling of basin- and plume-scale processes induced by full-scale deployment of CO{sub 2} storage was applied to the Mt. Simon Aquifer in the Illinois Basin. A three-dimensional mesh was generated with local refinement around 20 injection sites, with approximately 30 km spacing. A total annual injection rate of 100 Mt CO{sub 2} over 50 years was used. The CO{sub 2}-brine flow at the plume scale and the single-phase flow at the basin scale were simulated. Simulation results show the overall shape of a CO{sub 2} plume consisting of a typical gravity-override subplume in the bottom injection zone of high injectivity and a pyramid-shaped subplume in the overlying multilayered Mt. Simon, indicating the important role of a secondary seal with relatively low-permeability and high-entry capillary pressure. The secondary-seal effect is manifested by retarded upward CO{sub 2} migration as a result of multiple secondary seals, coupled with lateral preferential CO{sub 2} viscous fingering through high-permeability layers. The plume width varies from 9.0 to 13.5 km at 200 years, indicating the slow CO{sub 2} migration and no plume interference between storage sites. On the basin scale, pressure perturbations propagate quickly away from injection centers, interfere after less than 1 year, and eventually reach basin margins. The simulated pressure buildup of 35 bar in the injection area is not expected to affect caprock geomechanical integrity. Moderate pressure buildup is observed in Mt. Simon in northern Illinois. However, its impact on groundwater resources is less than the hydraulic drawdown induced by long-term extensive pumping from overlying freshwater aquifers.

Zhou, Q.; Birkholzer, J.T.; Mehnert, E.; Lin, Y.-F.; Zhang, K.

2009-08-15T23:59:59.000Z

80

Pore-scale simulation of liquid CO2 displacement of water using a two-phase lattice Boltzmann model  

SciTech Connect (OSTI)

A lattice Boltzmann color-fluid model, which was recently proposed by Liu et al. [H. Liu, A.J. Valocchi, and Q. Kang. Three-dimensional lattice Boltzmann model for immiscible two-phase flow simulations. Phys. Rev. E, 85:046309, 2012.] based on a concept of continuum surface force, is improved to simulate immiscible two-phase flows in porous media. The new improvements allow the model to account for different kinematic viscosities of both fluids and to model fluid-solid interactions. The capability and accuracy of this model is first validated by two benchmark tests: a layered two-phase flow with a viscosity ratio, and a dynamic capillary intrusion. This model is then used to simulate liquid CO2 (LCO2) displacing water in a dual-permeability pore network. The extent and behavior of LCO2 preferential flow (i.e., fingering) is found to depend on the capillary number (Ca), and three different displacement patterns observed in previous micromodel experiments are reproduced. The predicted variation of LCO2 saturation with Ca, as well as variation of specific interfacial length with LCO2 saturation, are both in good agreement with the experimental observations. To understand the effect of heterogeneity on pore-scale displacement, we also simulate LCO2 displacing water in a randomly heterogeneous pore network, which has the same size and porosity as the dual-permeability pore network. In comparison to the dual-permeability case, the transition from capillary fingering to viscous fingering occurs at a higher Ca, and LCO2 saturation is higher at low Ca but lower at high Ca. In either pore network, the LCO2-water specific interfacial length is found to obey a power-law dependence on LCO2 saturation.

Liu, Haihu; Valocchi, Albert J.; Werth, Charles J.; Kang, Oinjun; Oostrom, Martinus

2014-11-01T23:59:59.000Z

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81

Geologic CO2 Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geologic CO2 Sequestration Geologic CO2 Sequestration Geologic reservoirs offer promising option for long- term storage of captured CO 2 Accumulations of gases (including CO 2 ) in geologic reservoirs, by natural processes or through enhanced oil recovery operations, demonstrate that gas can be stored for long periods of time and provide insights to the efficacy and impacts of geological gas storage. Los Alamos scientists in the Earth and Environmental Sciences (EES) Division have been involved in geologic CO 2 storage research for over a decade. Research Highlights * Led first-ever US field test on CO 2 sequestration in depleted oil reservoirs * Participant in two Regional Carbon Sequestration Partnerships (Southwest Regional and Big Sky) * Part of the National Risk Assessment Partnership (NRAP) for CO

82

NETL: CO2 Compression  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Compression CO2 Compression The CO2 captured from a power plant will need to be compressed from near atmospheric pressure to a pressure between 1,500 and 2,200 psi in order to be transported via pipeline and then injected into an underground sequestration site. Read More! CO2 Compression The compression of CO2 represents a potentially large auxiliary power load on the overall power plant system. For example, in an August 2007 study conducted for DOE/NETL, CO2 compression was accomplished using a six-stage centrifugal compressor with interstage cooling that required an auxiliary load of approximately 7.5 percent of the gross power output of a subcritical pressure, coal-fired power plant. As a result, DOE/NETL is sponsoring R&D to develop novel methods that can significantly decrease the

83

A Model of Transient Thermal Transport Phenomena Applied to the Carbonation and Calcination of a Sorbent Particle for Calcium Oxide Looping CO2 Capture  

E-Print Network [OSTI]

looping is selected as the model cycle because of its suitability for solar-driven carbon dioxide captureA Model of Transient Thermal Transport Phenomena Applied to the Carbonation and Calcination of a Sorbent Particle for Calcium Oxide Looping CO2 Capture Lindsey Yue and Wojciech Lipi´nski, The Australian

84

EMSL - CO2 sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

co2-sequestration en Low-Temperature Carbon Monoxide Oxidation Catalysed by Regenerable Atomically Dispersed Palladium on Alumina. http:www.emsl.pnl.govemslwebpublications...

85

Evaluation of Cubic, SAFT, and PC-SAFT Equations of State for the Vapor–Liquid Equilibrium Modeling of CO2 Mixtures with Other Gases  

Science Journals Connector (OSTI)

Evaluation of Cubic, SAFT, and PC-SAFT Equations of State for the Vapor–Liquid Equilibrium Modeling of CO2 Mixtures with Other Gases ... In this work, we assess the capability of Redlich–Kwong (RK), Soave–Redlich–Kwong (SRK), Peng–Robinson (PR) cubic equations of state (EoS), as well as Statistical Associating Fluid Theory (SAFT) and Perturbed-Chain SAFT (PC-SAFT) in modeling vapor–liquid equilibria for binary mixtures of CO2 with CH4, N2, O2, SO2, Ar, and H2S, and for the ternary mixture CO2–N2–O2. ... PC-SAFT is, on average, more accurate than cubic EoS and SAFT when no binary interaction parameter is used. ...

Nikolaos I. Diamantonis; Georgios C. Boulougouris; Erum Mansoor; Dimitrios M. Tsangaris; Ioannis G. Economou

2013-02-07T23:59:59.000Z

86

Modeling CO2 Sequestration in a Saline Reservoir and Depleted Oil Reservoir to Evaluate The Regional CO2 Sequestration Potential of The Ozark Plateau Aquifer System, South-Central Kansas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 Sequestration in a Saline Reservoir and Depleted Oil Reservoir to Evaluate The Regional CO 2 Sequestration Potential of The Ozark Plateau Aquifer System, South-Central Kansas Background Carbon capture, utilization and storage (CCUS) technologies offer the potential for reducing CO 2 emissions without adversely influencing energy use or hindering economic growth. Deploying these technologies in commercial-scale applications requires adequate geologic formations capable of (1) storing large volumes of CO 2 , (2) receiving injected CO 2 at efficient and economic rates, and (3) retaining CO 2 safely over extended periods. Research efforts are currently focused on conventional and unconventional storage formations within depositional environments such as: deltaic, fluvial, alluvial,

87

If Anthropogenic CO2 Emissions Cease, Will Atmospheric CO2 Concentration Continue to Increase?  

Science Journals Connector (OSTI)

If anthropogenic CO2 emissions were to suddenly cease, the evolution of the atmospheric CO2 concentration would depend on the magnitude and sign of natural carbon sources and sinks. Experiments using Earth system models indicate that the overall ...

Andrew H. MacDougall; Michael Eby; Andrew J. Weaver

2013-12-01T23:59:59.000Z

88

Air–steam gasification of biomass in fluidized bed with CO2 absorption: A kinetic model for performance prediction  

Science Journals Connector (OSTI)

Abstract Significance of decarbonized energy production in the context of a foreseeable hydrogen economy has called for the need of extensive research in biomass gasification-carbon dioxide capture technique. The feasibility of calcium oxide as a sorbent for CO2 in syngas is studied for air–steam fluidized bed (FB) gasification through a reaction kinetic modeling approach. Arrhenius rate equations are employed for primary and secondary pyrolysis, gasification and carbonation reactions. Devolatilization product yields are predicted using available correlations for FB gasification and cracking of tar is incorporated. Parametric performance analysis is carried out highlighting the significance of equivalence ratio (ER), gasification temperature, steam to biomass ratio (SBR) and sorbent to biomass ratio (SOBR). The effects of various gasifying media on H2 concentration and performance indicators such as heating value and efficiencies are analyzed. The simulation results are validated with the reported experimental results. The kinetic study reveals that air–steam gasification significantly reduces the unreacted steam but at a lower H2 concentration than steam gasification. A maximum of 53% hydrogen rich gas mixture is predicted at ER = 0.25, SBR = 1.5, SOBR = 2.7 and 1000 K. Against fossil fuel expended steam gasification, pure oxygen gasification is suggested by the study.

C.C. Sreejith; C. Muraleedharan; P. Arun

2015-01-01T23:59:59.000Z

89

BNL | CO2 Laser  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Laser CO2 Laser The ATF is one of the only two facilities worldwide operating picosecond, terawatt-class CO2 lasers. Our laser system consists of a picoseconds pulse-injector based on fast optical switching from the output of a conventional CO2 laser oscillator, and a chain of high-pressure laser amplifiers. It starts with a wavelength converter wherein a near-IR picosecond solid-state laser with l»1 μm produces a mid-IR 10-μm pulse. This process employs two methods; semiconductor optical switching, and the Kerr effect. First, we combine the outputs from a multi-nanosecond CO2 laser oscillator with a picosecond Nd:YAG laser on a germanium Brewster-plate to produce an ~200 ps, 10μm pulse by semiconductor optical switching. Co-propagating this pulse with a Nd:YAG's 2nd harmonic in a

90

A Conceptual Model of H2O/CO2 Frost Sublimation and Condensation Caused Albedo Change in Crater Interiors, Martian Seasonal Polar Cap Regions H. Xie1  

E-Print Network [OSTI]

A Conceptual Model of H2O/CO2 Frost Sublimation and Condensation Caused Albedo Change in Crater.Xie@utsa.edu; 2 School of Chemistry, Physics and Earth Sciences, Flinders University, Australia; 3 Research Center are a major element of the current Mars' climate and circulation. Understanding the sublimation

Texas at San Antonio, University of

91

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping  

Science Journals Connector (OSTI)

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping ... Future chemical plants may be required to have much higher flexibility and agility than existing process facilities in order to be able to handle new hybrid combinations of power and chemical units. ...

Patrick J. Robinson; William L. Luyben

2010-04-26T23:59:59.000Z

92

meters in CO2 euthanasia chambers. All CO2 euthanasia chambers in both  

E-Print Network [OSTI]

meters in CO2 euthanasia chambers. All CO2 euthanasia chambers in both the facilities and laboratories will need flow meters. ULAR is currently in the process of identifying a cost-effective, accurate, and durable flow meter to install in all of the CO2 chambers in all of the vivaria. When a specific model

Bushman, Frederic

93

Hydro-mechanical modelling of geological CO2 storage and the study of possible caprock fracture mechanisms  

E-Print Network [OSTI]

to tensile stresses is treated. The stress intensity factor is used as the driving parameter describing mechanisms N. Guy,1-2 D.M. Seyedi,1 F. Hild2 BRGM, Natural Risks & CO2 Storage Safety Division, 3 av. Claude studies have shown that gas injection into deep permeable formations induce changes of the total

94

An activity model for phase equilibria in the1 H2O-CO2-NaCl system2  

E-Print Network [OSTI]

reproduces solubility experiments of halite20 up to 650°C and 10 kbar, and accounts for ion pairing.gca.2013.02.008 #12;teractions parameters between aqueous CO2 and the aqueous species created by25 halite

Paris-Sud XI, Université de

95

Forecast of Advanced Technology for Coal Power Generation Towards the Year of 2050 in CO2 Reduction Model of Japan  

Science Journals Connector (OSTI)

Abstract In the fossil fuel, coal is enough to get easily because it has supply and price stability brought about its ubiquitously. Coal is used for power generation as the major fuel in the world. However it is true that control of global warming should be applied to coal power generations. Therefore, many people expect CO2 reduction by technical innovation such as efficiency improvement, Carbon dioxide Capture and Storage (CCS). In case of coal power plant are considered for improving efficiency. Some of them have already put into commercial operation but others are still under R&D stage. Especially, the technical development prospect of the power plant is very important for planning the energy strategy in the resource-importing country. Japan Coal Energy Center (JCOAL) constructed a program to forecast the share of advanced coal fired plants/natural gas power plants towards the year of 2050. Then, we simulated the future prediction about 2 cases (the Japanese scenario and the world scenario). The fuel price and the existence of CCS were considered in the forecast of the technical development of the thermal power generation. Especially in the Japanese scenario, we considered the CO2 reduction target which is 80% reduction in 1990. In the world scenario, coal price had almost no influence on the share of coal fired plant. However, when the gas price increased 1.5% or more, the share of coal fired plant increased. In that case, CO2 emissions increased because coal-fired plant increased. Compared with both cases, the amount of CO2 in 2050 without CCS case was 50% higher than that of with CCS case. In Japanese scenario, achievement of 80% CO2 reduction target is impossible without CCS. If CCS is introduced into all the new establishment coal fired plant, CO2 reduction target can be attained. In the Japanese scenario, the gas price more expensive than a coal price so that the amount of the coal fired plant does not decline. Since the reduction of the amount of CO2 will be needed in all over the world, introductory promotion and technical development of CCS are very important not only Japan but also all over the world.

Takashi Nakamura; Keiji Makino; Kunihiko Shibata; Michiaki Harada

2013-01-01T23:59:59.000Z

96

NETL: IEP – Oxy-Combustion CO2 Emissions Control - CANMET CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

– Oxy-Combustion CO2 Emissions Control – Oxy-Combustion CO2 Emissions Control CANMET CO2 Consortium-O2/CO2 Recycle Combustion Project No.: IEA-CANMET-CO2 (International Agreement) Photograph of CANMET's Vertical Combustor Research Facility. Photograph of CANMET’s Vertical Combustor Research Facility. The CANMET carbon dioxide (CO2) consortium will conduct research to further the development of oxy-combustion for retrofit to coal-fired power plants. Research activities include: (1) modeling of an advanced, supercritical pressure oxy-coal plant, including an analysis of the impact of oxygen (O2) purity and O2 partial enrichment, overall process performance, and cost; (2) testing of pilot-scale CO2 capture and compression; (3) investigating CO2 phase change at liquid and supercritical states in gas mixtures

97

Prediction and Experimental Verification of CO2 Adsorption on Ni/DOBDC Using a Genetic Algorithm–Back-Propagation Neural Network Model  

Science Journals Connector (OSTI)

This is not a failure of the theoretical models but a failure of their application because the correlations from the model cannot cover a wide range of parameters. ... CO2 (as the adsorbate gas) was fed to the sample cell to achieve the setting pressure. ... The 3 layer's feed forward neural network with back propagation algorithm in MATLAB environment was used for estn. of removal efficiencies of phenol and resorcinol in bi-solute water environment based on 29 sets of lab. ...

Zhi Guo Qu; Hui Wang; Wen Zhang; Liang Zhou; Ying Xin Chang

2014-07-10T23:59:59.000Z

98

Comprehensive ecosystem model-experiment synthesis using multiple datasets at two temperate forest free-air CO2 enrichment experiments: model performance and compensating biases  

SciTech Connect (OSTI)

Free Air CO2 Enrichment (FACE) experiments provide a remarkable wealth of data to test the sensitivities of terrestrial ecosystem models (TEMs). In this study, a broad set of 11 TEMs were compared to 22 years of data from two contrasting FACE experiments in temperate forests of the south eastern US the evergreen Duke Forest and the deciduous Oak Ridge forest. We evaluated the models' ability to reproduce observed net primary productivity (NPP), transpiration and Leaf Area index (LAI) in ambient CO2 treatments. Encouragingly, many models simulated annual NPP and transpiration within observed uncertainty. Daily transpiration model errors were often related to errors in leaf area phenology and peak LAI. Our analysis demonstrates that the simulation of LAI often drives the simulation of transpiration and hence there is a need to adopt the most appropriate of hypothesis driven methods to simulate and predict LAI. Of the three competing hypotheses determining peak LAI (1) optimisation to maximise carbon export, (2) increasing SLA with canopy depth and (3) the pipe model the pipe model produced LAI closest to the observations. Modelled phenology was either prescribed or based on broader empirical calibrations to climate. In some cases, simulation accuracy was achieved through compensating biases in component variables. For example, NPP accuracy was sometimes achieved with counter-balancing biases in nitrogen use efficiency and nitrogen uptake. Combined analysis of parallel measurements aides the identification of offsetting biases; without which over-confidence in model abilities to predict ecosystem function may emerge, potentially leading to erroneous predictions of change under future climates.

Walker, Anthony P [ORNL] [ORNL; Hanson, Paul J [ORNL] [ORNL; DeKauwe, Martin G [Macquarie University] [Macquarie University; Medlyn, Belinda [Macquarie University] [Macquarie University; Zaehle, S [Max Planck Institute for Biogeochemistry] [Max Planck Institute for Biogeochemistry; Asao, Shinichi [Colorado State University, Fort Collins] [Colorado State University, Fort Collins; Dietze, Michael [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Hickler, Thomas [Goethe University, Frankfurt, Germany] [Goethe University, Frankfurt, Germany; Huntinford, Chris [Centre for Ecology and Hydrology, Wallingford, United Kingdom] [Centre for Ecology and Hydrology, Wallingford, United Kingdom; Iversen, Colleen M [ORNL] [ORNL; Jain, Atul [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Lomas, Mark [University of Sheffield] [University of Sheffield; Luo, Yiqi [University of Oklahoma] [University of Oklahoma; McCarthy, Heather R [Duke University] [Duke University; Parton, William [Colorado State University, Fort Collins] [Colorado State University, Fort Collins; Prentice, I. Collin [Macquarie University] [Macquarie University; Thornton, Peter E [ORNL] [ORNL; Wang, Shusen [Canada Centre for Remote Sensing (CCRS)] [Canada Centre for Remote Sensing (CCRS); Wang, Yingping [CSIRO Marine and Atmospheric Research] [CSIRO Marine and Atmospheric Research; Warlind, David [Lund University, Sweden] [Lund University, Sweden; Weng, Ensheng [University of Oklahoma, Norman] [University of Oklahoma, Norman; Warren, Jeffrey [ORNL] [ORNL; Woodward, F. Ian [University of Sheffield] [University of Sheffield; Oren, Ram [Duke University] [Duke University; Norby, Richard J [ORNL] [ORNL

2014-01-01T23:59:59.000Z

99

co2-transport | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tools and Data Baseline Studies Quality Guidelines (QGESS) About Energy Analysis FENETL CO2 Transport Cost Model About the model: This model was developed to estimate the cost of...

100

Research project on CO2 geological storage and groundwaterresources: Large-scale hydrological evaluation and modeling of impact ongroundwater systems  

SciTech Connect (OSTI)

If carbon dioxide capture and storage (CCS) technologies areimplemented on a large scale, the amounts of CO2 injected and sequesteredunderground could be extremely large. The stored CO2 then replaces largevolumes of native brine, which can cause considerable pressureperturbation and brine migration in the deep saline formations. Ifhydraulically communicating, either directly via updipping formations orthrough interlayer pathways such as faults or imperfect seals, theseperturbations may impact shallow groundwater or even surface waterresources used for domestic or commercial water supply. Possibleenvironmental concerns include changes in pressure and water table,changes in discharge and recharge zones, as well as changes in waterquality. In compartmentalized formations, issues related to large-scalepressure buildup and brine displacement may also cause storage capacityproblems, because significant pressure buildup can be produced. Toaddress these issues, a three-year research project was initiated inOctober 2006, the first part of which is summarized in this annualreport.

Birkholzer, Jens; Zhou, Quanlin; Rutqvist, Jonny; Jordan,Preston; Zhang,K.; Tsang, Chin-Fu

2007-10-24T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Modeling Energy Flow in an Integrated Pollutant Removal (IPR) System with CO2 Capture Integrated with Oxy-fuel Combustion  

Science Journals Connector (OSTI)

Oxy-coal combustion is one of the technical solutions for mitigating CO2 in thermal power plants. ... Currently, more than 85% of the energy that drives modern economies comes from fossil fuels, and this has stimulated research and development into more sustainable alternative energy sources. ... Other species, such as SO2, various nitrogen compounds, HCl, and Hg, are also present in quantities dependent upon the fossil fuel composition and the amount of air that leaks into the boiler. ...

Sivaram Harendra; Danylo Oryshcyhn; Stephen Gerdemann; Thomas Ochs; John Clark

2012-10-13T23:59:59.000Z

102

CO2 maritime transportation  

Science Journals Connector (OSTI)

The objective of this study is to describe the complete transport chain of CO2 between capture and storage including a ship transport. This last one is composed by the following steps: Shore terminal including the liquefaction, temporary storage and CO2 loading. Ship with a capacity of 30,000 m3. On or off shore terminal including an unloading system, temporary storage and export towards the final storage. Between all the possible thermodynamic states, the liquid one is most relevant two options are compared in the study (?50 °C, 7 bar) and (?30 °C, 15 bar). The ship has an autonomy of 6 days, is able to cover 1000 km with a cargo of 2.5 Mt/year. Several scenarios are studied varying the geographical position of the CO2 source, the number of harbours and the way the CO2 is finally stored. Depending on the option, the transport cost varies from 24 to 32 €/tCO2. This study confirms the conclusion of a previous study supported by ADEME, the cost transport is not negligible regarding the capture one when ships are considered. Transport by ship becomes a more economical option compared with an off shore pipeline when the distance exceeds 350 km and with an onshore pipeline when it exceeds 1100 km.

Sandrine Decarre; Julien Berthiaud; Nicolas Butin; Jean-Louis Guillaume-Combecave

2010-01-01T23:59:59.000Z

103

NETL: CO2 Emissions Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Home > Technologies > Coal & Power Systems > Innovations for Existing Plants > CO2 Emissions Control Home > Technologies > Coal & Power Systems > Innovations for Existing Plants > CO2 Emissions Control Innovations for Existing Plants CO2 Emissions Control RD&D Roadmap Technology Update DOE/NETL Advanced CO2 Capture R&D Program: Technology Update DOE/NETL Advanced CO2 Capture R&D Program Accomplishments DOE/NETL Carbon Dioxide Capture and Storage RD&D Roadmap 2013 NETL CO2 Capture Technology Meeting Presentations DOE/NETL's Monthly Carbon Sequestration Newsletter Program Goals and Targets Pre-Combustion CO2 Control Post-Combustion CO2 Control Advanced Combustion CO2 Compression Other Systems Analysis Regulatory Drivers Reference Shelf Carbon capture involves the separation of CO2 from coal-based power plant flue gas or syngas. There are commercially available 1st-Generation CO2

104

Methanol Synthesis from CO2 Hydrogenation over a Pd4/In2O3 Model Catalyst: A Combined DFT and Kinetic Study  

SciTech Connect (OSTI)

Methanol synthesis from CO2 hydrogenation on Pd4/In2O3 has been investigated using density functional theory (DFT) and microkinetic modeling. In this study, three possible routes in the reaction network of CO2 + H2 ? CH3OH + H2O have been examined. Our DFT results show that the HCOO route competes with the RWGS route whereas a high activation barrier kinetically blocks the HCOOH route. DFT results also suggest that H2COO* + H* ? H2CO* +OH* and cis-COOH* + H* ?CO* + H2O* are the rate limiting steps in the HCOO route and the RWGS route, respectively. Microkinetic modeling results demonstrate that the HCOO route is the dominant reaction route for methanol synthesis from CO2 hydrogenation. We found that the activation of H adatom on the small Pd cluster and the presence of H2O on the In2O3 substrate play important roles in promoting the methanol synthesis. The hydroxyl adsorbed at the interface of Pd4/In2O3 induces the transformation of the supported Pd4 cluster from a butterfly structure into a tetrahedron structure. This important structure change not only indicates the dynamical nature of the supported nanoparticle catalyst structure during the reaction but also shifts the final hydrogenation step from H2COH to CH3O.

Ye, Jingyun; Liu, Changjun; Mei, Donghai; Ge, Qingfeng

2014-08-01T23:59:59.000Z

105

Simultaneous modeling of VLE, LLE and VLLE of CO2 and 1, 2, 3 and 4 alkanol containing mixtures using GC-PPC-SAFT EOS  

Science Journals Connector (OSTI)

Abstract A polar version of the group contribution PC-SAFT equation of state (GC-PPC-SAFT; Tamouza et al., 2004; NguyenHuynh et al., 2008) combined with a method for correlation/prediction of binary interaction parameters kij (NguyenHuynh et al., 2008) is here applied to model vapor–liquid, liquid–liquid and vapor–liquid–liquid phase equilibria of CO2 + alkanol mixtures simultaneously. A cross-association interaction between CO2 and alkanol had to be taken into account to model/predict the mixtures equilibria accurately. The cross-association parameters were evaluated using the so-called CR1 mixing rules supported by ab initio computations. Extensive prediction tests on CO2 + alkanol mixtures involving linear and branched alkanols are carried out. The results obtained showed that in most cases, the correlation and prediction calculations are qualitatively and quantitatively satisfactory: the overall deviations on liquid phase and vapor phase are respectively ?X = 3–4% and ?Y = 1–2%.

D. NguyenHuynh; J.-P. Passarello; J.-C. de Hemptinne; F. Volle; P. Tobaly

2014-01-01T23:59:59.000Z

106

Category:Wichita, KS | Open Energy Information  

Open Energy Info (EERE)

KS KS Jump to: navigation, search Go Back to PV Economics By Location Media in category "Wichita, KS" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Wichita KS Westar Energy Inc.png SVFullServiceRestauran... 60 KB SVHospital Wichita KS Westar Energy Inc.png SVHospital Wichita KS ... 64 KB SVLargeHotel Wichita KS Westar Energy Inc.png SVLargeHotel Wichita K... 59 KB SVLargeOffice Wichita KS Westar Energy Inc.png SVLargeOffice Wichita ... 64 KB SVMediumOffice Wichita KS Westar Energy Inc.png SVMediumOffice Wichita... 62 KB SVMidriseApartment Wichita KS Westar Energy Inc.png SVMidriseApartment Wic... 61 KB SVOutPatient Wichita KS Westar Energy Inc.png SVOutPatient Wichita K... 62 KB SVPrimarySchool Wichita KS Westar Energy Inc.png

107

Category:Goodland, KS | Open Energy Information  

Open Energy Info (EERE)

KS KS Jump to: navigation, search Go Back to PV Economics By Location Media in category "Goodland, KS" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Goodland KS Westar Energy Inc.png SVFullServiceRestauran... 60 KB SVHospital Goodland KS Westar Energy Inc.png SVHospital Goodland KS... 63 KB SVLargeHotel Goodland KS Westar Energy Inc.png SVLargeHotel Goodland ... 59 KB SVLargeOffice Goodland KS Westar Energy Inc.png SVLargeOffice Goodland... 65 KB SVMediumOffice Goodland KS Westar Energy Inc.png SVMediumOffice Goodlan... 63 KB SVMidriseApartment Goodland KS Westar Energy Inc.png SVMidriseApartment Goo... 60 KB SVOutPatient Goodland KS Westar Energy Inc.png SVOutPatient Goodland ... 63 KB SVPrimarySchool Goodland KS Westar Energy Inc.png

108

CHARACTERIZATION OF MIXED CO2-TBPB HYDRATE FOR REFRIGERATION APPLICATIONS  

E-Print Network [OSTI]

in a dynamic loop and an Ostwald-de Waele model was obtained. Keywords: CO2, TBPB, mixed hydrates, solubility

Paris-Sud XI, Université de

109

Modelling and simulation of CO2 (carbon dioxide) bottoming cycles for offshore oil and gas installations at design and off-design conditions  

Science Journals Connector (OSTI)

Abstract Improved energy efficiency is an issue of increasing importance in offshore oil and gas installations. The power on offshore installations is generated by gas turbines operating in a simple cycle. There is an obvious possibility for heat recovery for further power generation from the exhaust heat. However, the limited space and weight available makes the inclusion of bottoming cycles challenging. Due to its high working pressure and thereby compact components CO2 (carbon dioxide) could be a viable solution, combining compactness and efficiency. An in-house simulation tool is used to evaluate the performance of CO2 bottoming cycles at design and off-design conditions. Both a simple recuperated single stage cycle and a more advanced dual stage system are modelled. Results from simulations show a potential for 10–11%-points increase in net plant efficiency at 100% gas turbine load. Also off-design simulations taking the variation in heat exchanger performance into account are performed showing that the bottoming cycle improves the off-design performance compared to the standard gas turbine solution. Even at 60% GT (gas turbine) load, the combined cycle with CO2 bottoming cycle can achieve up to 45% net plant efficiency, compared to 31% for only the gas turbine.

Harald Taxt Walnum; Petter Nekså; Lars O. Nord; Trond Andresen

2013-01-01T23:59:59.000Z

110

CO2.indd  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

STORAGE & ENHANCED OIL RECOVERY STORAGE & ENHANCED OIL RECOVERY Objective R MOTC can play a signifi cant role in carbon dioxide (CO 2 ) storage and enhanced oil recovery technology development and fi eld demonstra- tions. RMOTC completed a scoping engineering study on Naval Petroleum Reserve No. 3's (NPR-3) CO 2 enhanced oil recovery potential. More recent character- ization studies indicate geologic carbon storage would also be an excellent use of NPR-3 resources beyond their economic life in conventional production. Geologic Storage Fossil fuels will remain the mainstay of energy production well into the 21st century. Availability of these fuels to provide clean, affordable energy is es- sential for the prosperity and security of the United States. However, increased atmospheric concentrations

111

Vegetation Response to CO2 and Climate  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Vegetation Response to CO2 and Climate Vegetation Response to CO2 and Climate Area and Carbon Content of Sphagnum Since Last Glacial Maximum (2002) TDE Model Intercomparison Project Data Archive Presentations and abstracts from the recent DOE Terrestrial Science Team Meeting (Argonne National Laboratory, October 29-31, 2001) FACE (Free-Air CO2 Enrichment) Walker Branch Throughfall Displacement Experiment Data Report: Site Characterization, System Performance, Weather, Species Composition, and Growth (2001), NDP-078A | PDF Bibliography on CO2 Effects on Vegetation and Ecosystems: 1990-1999 Literature (2000), CDIAC-129 Direct effects of atmospheric CO2 enrichment on plants and ecosystems: An updated bibliographic data base (1994), CDIAC-70 A Database of Herbaceous Vegetation Responses to Elevated

112

A model-based understanding of solid-oxide electrolysis cells (SOECs) for syngas production by H2O/CO2 co-electrolysis  

Science Journals Connector (OSTI)

Abstract High temperature co-electrolysis of H2O and CO2 offers a promising route for syngas (H2, CO) production via efficient use of heat and electricity. The performance of a SOEC during co-electrolysis is investigated by focusing on the interactions between transport processes and electrochemical parameters. Electrochemistry at the three-phase boundary is modeled by a modified Butler–Volmer approach that considers H2O electrolysis and CO2 electrolysis, individually, as electrochemically active charge transfer pathways. The model is independent of the geometrical structure. A 42-step elementary heterogeneous reaction mechanism for the thermo-catalytic chemistry in the fuel electrode, the dusty gas model (DGM) to account for multi-component diffusion through porous media, and a plug flow model for flow through the channels are used in the model. Two sets of experimental data are reproduced by the simulations, in order to deduce parameters of the electrochemical model. The influence of micro-structural properties, inlet cathode gas velocity, and temperature are discussed. Reaction flow analysis is performed, at OCV, to study methane production characteristics and kinetics during co-electrolysis. Simulations are carried out for configurations ranging from simple one-dimensional electrochemical button cells to quasi-two-dimensional co-flow planar cells, to demonstrate the effectiveness of the computational tool for performance and design optimization.

Vikram Menon; Qingxi Fu; Vinod M. Janardhanan; Olaf Deutschmann

2015-01-01T23:59:59.000Z

113

NETL: CO2 Emissions Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Post-Combustion CO2 Control Post-Combustion CO2 Control Post-combustion CO2 control systems separate CO2 from the flue gas produced by conventional coal combustion in air. The flue gas is at atmospheric pressure and has a CO2 concentration of 10-15 volume percent. Read More! Capturing CO2 under these conditions is challenging because: (1) the low pressure and dilute concentration dictate a high total volume of gas to be treated; (2) trace impurities in the flue gas tend to reduce the effectiveness of the CO2 separation processes; and (3) compressing captured CO2 from atmospheric pressure to pipeline pressure (1,200 - 2,200 pounds per square inch) represents a large parasitic energy load. Plant Picture DOE/NETL's post-combustion CO2 control technology R&D program includes

114

Integrated Assessment of Energy-Options for CO2 Reduction  

Science Journals Connector (OSTI)

Energy technology options for CO2 reduction are evaluated in a process-oriented dynamic national costs minimizing LP-model of the Dutch energy system. To identify cost-effective CO2 reduction strategies two scena...

T. Kram; P. A. Okken

1989-01-01T23:59:59.000Z

115

B.2 Subproject Brokate Simulating CO2 Sequestration  

E-Print Network [OSTI]

79 B.2 Subproject Brokate Simulating CO2 Sequestration Hysteretic Aspects of CO2 Sequestration and implement models describing the hysteresis in the context of the CO2 sequestration process. The hysteresis's law but in contrast to most Darcy's law based models it assumes the phases to be weakly compressible

Turova, Varvara

116

Twenty-First-Century Compatible CO2 Emissions and Airborne Fraction Simulated by CMIP5 Earth System Models under Four Representative Concentration Pathways  

Science Journals Connector (OSTI)

The carbon cycle is a crucial Earth system component affecting climate and atmospheric composition. The response of natural carbon uptake to CO2 and climate change will determine anthropogenic emissions compatible with a target CO2 pathway. For ...

Chris Jones; Eddy Robertson; Vivek Arora; Pierre Friedlingstein; Elena Shevliakova; Laurent Bopp; Victor Brovkin; Tomohiro Hajima; Etsushi Kato; Michio Kawamiya; Spencer Liddicoat; Keith Lindsay; Christian H. Reick; Caroline Roelandt; Joachim Segschneider; Jerry Tjiputra

2013-07-01T23:59:59.000Z

117

TOUGH+CO2: A multiphase fluid-flow simulator for CO2 geologic sequestration in saline aquifers  

Science Journals Connector (OSTI)

TOUGH+CO"2 is a new simulator for modeling of CO"2 geologic sequestration in saline aquifers. It is a member of TOUGH+, the successor to the TOUGH2 family of codes for multicomponent, multiphase fluid and heat flow simulation. The code accounts for heat ... Keywords: CO2 geologic sequestration, Modeling, Multiphase flow, Parallel computing, Saline aquifer, TOUGH+, TOUGH2

Keni Zhang; George Moridis; Karsten Pruess

2011-06-01T23:59:59.000Z

118

Novel CO2 - Philic Absorbents  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel Co Novel Co 2 - PhiliC AbsorbeNts Summary The ability to separate a high pressure mixture of CO 2 and H 2 such that a high pressure stream of CO 2 for sequestration and a high pressure stream of H 2 for energy are produced remains an elusive goal. This research has identified a class of compounds that melt in the presence of high pressure CO 2 , forming a liquid phase composed of roughly 50wt% CO 2 and 50wt% of the compound. Unlike conventional solvents that require substantial depressurization during regeneration to release a low pressure CO 2 stream, these novel compounds completely release the CO 2 at many hundreds of psia as the compound solidifies. This work will reveal whether one of more of these compounds can selectively remove CO 2 from a mixture

119

Representing technology in CGE models: a comparison of SGM and AMIGA for electricity sector CO2 mitigation  

Science Journals Connector (OSTI)

The goal of this effort is to compare two climate economic models – the Second Generation Model (SGM) and All Modular Industry Growth Assessment Model (AMIGA) – and highlight the consequences of different modelling approaches and structures on the estimation of climate change policy results. We show that different assumptions about how technology choices are made in the US electricity sector in response to a carbon charge can lead to differences in estimates of environmental, fuel market, and economy-wide impacts. If the differences among models can be better understood, improvements in the models may be made and policy makers will be better informed by the insights provided by the models.

Michael G. Shelby; Allen A. Fawcett; O. Eric Smith; Donald A. Hanson; Ronald D. Sands

2008-01-01T23:59:59.000Z

120

Data assimilation for crop yield and CO2 fixation monitoring in Asia by a photosynthetic sterility model using satellites and meteorological data  

Science Journals Connector (OSTI)

This study assimilates satellite and meteorological data to monitor grain yields and CO2 fixation by developing a photosynthetic-sterility model that integrates the Asian scale of meteorological data such as solar radiation, air temperature effects on photosynthesis and the Normalised Difference Vegetation Index (NDVI) with a Satellite Pour l'Observation de la Terre (SPOT) VEGETATION sensor. Monitoring crop production using remotely sensed and daily meteorological data can provide an important early warning regarding poor crop production to Asian countries with their still-growing populations. Grain production monitoring would support orderly crisis management to maintain food security in Asia, which is facing climate fluctuations through this century of global warming. A decision-tree method classifies the distribution of crop fields in Asia using Terra Moderate Resolution Imaging Spectroradiometer (MODIS) and SPOT VEGETATION data, which include the NDVI and Land Surface Water Index (LSWI). The air temperature data are available from the National Centres for Environmental Prediction (NCEP) and European Centre for Medium-Range Weather Forecasts (ECMWF). The solar radiation data are supplied by the Geostationary Meteorological Satellite (GMS) Centre and re-analysis data, by the NCEP and ECMWF. This study provides daily distributions of the photosynthesis rate, which is the CO2 fixation in Asian areas combined with the distribution of grain fields.

Daijiro Kaneko; Toshiro Kumakura; Peng Yang

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

ARM - Instrument - co2flx  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govInstrumentsco2flx govInstrumentsco2flx Documentation CO2FLX : Handbook CO2FLX : Instrument Mentor Monthly Summary (IMMS) reports CO2FLX : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Carbon Dioxide Flux Measurement Systems (CO2FLX) Instrument Categories Atmospheric Carbon General Overview The Southern Great Plains (SGP) carbon dioxide flux (CO2 flux) measurement systems provide half-hour average fluxes of CO2, H2O (latent heat), and sensible heat. The fluxes are obtained by the eddy covariance technique, which computes the flux as the mean product of the vertical wind component with CO2 and H2O densities, or estimated virtual temperature. A three-dimensional sonic anemometer is used to obtain the orthogonal wind

122

NETL: 2013 Conference Proceedings - 2013 NETL CO2 Capture Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2013 NETL CO2 Capture Technology Meeting 2013 NETL CO2 Capture Technology Meeting July 8-11, 2013 Previous Proceedings 2012: NETL CO2 Capture Technology Meeting 2011: NETL CO2 Capture Technology Meeting 2010: NETL CO2 Capture Technology Meeting 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting Proceedings of the 2013 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, July 8 Opening/Overview Post-Combustion Sorbent-Based Capture Tuesday, July 9 Post-Combustion Solvent-Based Capture CO2 Compression Wednesday, July 10 Post-Combustion Membrane-Based Capture Pre-Combustion Capture Projects Thursday, July 11 ARPA-E Capture Projects System Studies and Modeling Oxy-Combustion and Chemical Looping Posters PRESENTATIONS Monday, July 8, 2013 Opening/Overview Introduction [PDF-MB]

123

Constraining the reservoir model of an injected CO2 plume with crosswell CASSM at the Frio-II brine plot  

SciTech Connect (OSTI)

Crosswell CASSM (continuous active-source seismic monitoring) data was acquired as part of the Frio-II brine pilot CO{sub 2} injection experiment. To gain insight into the CO{sub 2} plume evolution, we have integrated the 3D multiphase flow modeling code TOUGH2 with seismic simulation codes via a petrophysical model that predicts seismic velocity for a given CO{sub 2} saturation. Results of forward seismic modeling based on the CO{sub 2} saturation distribution produced by an initial TOUGH2 model compare poorly with the CASSM data, indicating that the initial flow model did not capture the actual CO{sub 2} plume dynamics. Updates to the TOUGH2 model required to better match the CASSM field data indicate vertical flow near the injection well, with increased horizontal plume growth occurring at the top of the reservoir sand. The CASSM continuous delay time data are ideal for constraining the modeled spatiotemporal evolution of the CO{sub 2} plume and allow improvement in reservoir model and estimation of CO{sub 2} plume properties.

Daley, T.M.; Ajo-Franklin, J.; Doughty, C.A.

2011-02-15T23:59:59.000Z

124

NETL: CO2 Emissions Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Systems Analysis Systems Analysis DOE/NETL possesses strong systems analysis and policy-support capabilities. Systems analysis in support of the Innovations for Existing Plants Program consists of conducting various energy analyses that provide input to decisions on issues such as national plans and programs, resource use, environmental and energy security policies, technology options for research and development programs, and paths to deployment of energy technology. This work includes technology, benefits, and current situation and trends analyses related to CO2 emissions control. Systems analyses and economic modeling of potential new processes are crucial to providing sound guidance to R&D efforts. Since the majority of new CO2 capture technologies are still at a bench scale level of development, a conceptual design is first generated with emphasis on mass and energy balances. Based on available data and/or engineering estimates, these systems are optimized, and "what-if" scenarios are evaluated to identify barriers to deployment and help the process developers establish system performance targets. Reports that have been generated describing systems analyses in support of carbon capture efforts are shown in the table below.

125

Numerical Simulation of CO2 Sequestration in Natural CO2 Reservoirs on the Colorado Plateau  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Simulation of CO Simulation of CO 2 Sequestration in Natural CO 2 Reservoirs on the Colorado Plateau Stephen P. White (S.White@irl.cri.nz, (64) 4 5690000) Graham J. Weir (G.Weir@irl.cri.nz, (64) 4 5690000) Warwick M. Kissling (W.Kissling@irl.cri.nz, (64) 4 5690000) Industrial Research Ltd. P.O. Box 31310 Lower Hutt, New Zealand Abstract This paper outlines the proposed research and summarizes pre-project work that forms a basis for a new research program on CO 2 sequestration in saline aquifers. The pre-project work considers storage and disposal of CO 2 several kilometers beneath the surface in generic aquifers and demonstrates the use of reactive chemical transport modeling to simulate mineral sequestration of CO 2. The current research project applies these techniques to particular saline

126

Modeling of coulpled deformation and permeability evolution during fault reactivation induced by deep underground injection of CO2  

SciTech Connect (OSTI)

The interaction between mechanical deformation and fluid flow in fault zones gives rise to a host of coupled hydromechanical processes fundamental to fault instability, induced seismicity, and associated fluid migration. In this paper, we discuss these coupled processes in general and describe three modeling approaches that have been considered to analyze fluid flow and stress coupling in fault-instability processes. First, fault hydromechanical models were tested to investigate fault behavior using different mechanical modeling approaches, including slip interface and finite-thickness elements with isotropic or anisotropic elasto-plastic constitutive models. The results of this investigation showed that fault hydromechanical behavior can be appropriately represented with the least complex alternative, using a finite-thickness element and isotropic plasticity. We utilized this pragmatic approach coupled with a strain-permeability model to study hydromechanical effects on fault instability during deep underground injection of CO{sub 2}. We demonstrated how such a modeling approach can be applied to determine the likelihood of fault reactivation and to estimate the associated loss of CO{sub 2} from the injection zone. It is shown that shear-enhanced permeability initiated where the fault intersects the injection zone plays an important role in propagating fault instability and permeability enhancement through the overlying caprock.

Cappa, F.; Rutqvist, J.

2010-06-01T23:59:59.000Z

127

Modeling Coal Matrix Shrinkage and Differential Swelling with CO2 Injection for Enhanced Coalbed Methane Recovery and Carbon Sequestration Applications  

SciTech Connect (OSTI)

Matrix shrinkage and swelling can cause profound changes in porosity and permeability of coalbed methane reservoirs during depletion or when under CO{sub 2} injection processes, with significant implication for primary or enhanced methane recovery. Two models that are used to describe these effects are discussed. The first was developed by Advanced Resources International (ARI) and published in 1990 by Sawyer, et al. The second model was published by Palmer and Mansoori in 1996. This paper shows that the two provide equivalent results for most applications. However, their differences in formulation cause each to have relative advantages and disadvantages under certain circumstances. Specifically, the former appears superior for undersaturated coalbed methane reservoirs while the latter would be better if a case is found where matrix swelling is strongly disproportional to gas concentration. Since its presentation in 1996, the Palmer and Mansoori model has justifiably received much critical praise. However, the model developed by ARI for the COMET reservoir simulation program has been in use since 1990, and has significant advantages in certain settings. A review of data published by Levine in 1996 reveals that carbon dioxide causes a greater degree of coal matrix swelling compared to methane, even when measured on a unit of concentration basis. This effect is described in this report as differential swelling. Differential swelling may have important consequences for enhanced coalbed methane and carbon sequestration projects. To handle the effects of differential swelling, an extension to the matrix shrinkage and swelling model used by the COMET simulator is presented and shown to replicate the data of Levine. Preliminary field results from a carbon dioxide injection project are also presented in support of the extended model. The field evidence supports that considerable changes to coal permeability occur with CO{sub 2} injection, with significant implication for the design, implementation and performance of enhanced coalbed methane recovery and CO{sub 2} sequestration projects.

L. J. Pekot; S. R. Reeves

2002-03-31T23:59:59.000Z

128

TWO-DIMENSIONAL REACTIVE TRANSPORT MODELING OF CO2 INJECTION IN A SALINE AQUIFER AT THE SLEIPNER SITE  

E-Print Network [OSTI]

. To ensure safety, a low permeable formation, called the cap rock, is required on the top of the storage zone in the brine, and geochemical reactions with the host rock are considered in the model. Two mineralogical assemblages are considered in the Utsira formation, a sand formation that is highly permeable and a shale

Boyer, Edmond

129

Analysis of Field Development Strategies of CO2 EOR/Capture Projects Using a Reservoir Simulation Economic Model  

E-Print Network [OSTI]

($) Drilling cost for one well ($) Facilities cost for one pattern ($) Tubing cost for one well ($) Drilling depth (feet) EIA US Energy Information Administration EOR Enhanced Oil Recovery EOS Equation of State IEA International... in the reservoir ................................................................ 20 Figure 13: Scope of this chapter: definition of the economic model ............................... 21 Figure 14: Spot price of the oil on the WTI market from 1986 to 2013 (EIA...

Saint-Felix, Martin

2013-05-03T23:59:59.000Z

130

A field study combined with modeling investigation demonstrates that the organization of transport by mountain terrain strongly affects the regional CO2  

E-Print Network [OSTI]

,b), and Moore et al. (2008) showed that 1) an aggrading Rocky Mountain subalpine forest is a net annual CO2 sink- A MULTISCALE AND MULTIDISCIPLINARY INVESTIGATION OF ECOSYSTEM­ATMOSPHERE CO2 EXCHANGE OVER THE ROCKY MOUNTAINS/sinks associated with plant distributions over heterogeneous surfaces, regardless of whether the surface is flat

131

NETL - World CO2 Emissions - Projected Trends Tool | Open Energy  

Open Energy Info (EERE)

NETL - World CO2 Emissions - Projected Trends Tool NETL - World CO2 Emissions - Projected Trends Tool Jump to: navigation, search Tool Summary LAUNCH TOOL Name: NETL - World CO2 Emissions - Projected Trends Tool Agency/Company /Organization: National Energy Technology Laboratory Sector: Energy Topics: GHG inventory Resource Type: Software/modeling tools Website: www.netl.doe.gov/energy-analyses/refshelf/results.asp?ptype=Models/Too References: NETL - World CO2 Emissions - Projected Trends Tool [1] NETL - World CO2 Emissions - Projected Trends Tool This interactive tool enables the user to look at both total and power sector CO2 emissions from the use of coal, oil, or natural gas, over the period 1990 to 2030. One can use the tool to compare five of the larger CO2 emitters to each other or to overall world emissions. The data are from the

132

Regional CO2 and latent heat surface fluxes in the Southern Great Plains: Measurements, modeling, and scaling  

SciTech Connect (OSTI)

Characterizing net ecosystem exchanges (NEE) of CO{sub 2} and sensible and latent heat fluxes in heterogeneous landscapes is difficult, yet critical given expected changes in climate and land use. We report here a measurement and modeling study designed to improve our understanding of surface to atmosphere gas exchanges under very heterogeneous land cover in the mostly agricultural U.S. Southern Great Plains (SGP). We combined three years of site-level, eddy covariance measurements in several of the dominant land cover types with regional-scale climate data from the distributed Mesonet stations and Next Generation Weather Radar precipitation measurements to calibrate a land surface model of trace gas and energy exchanges (isotope-enabled land surface model (ISOLSM)). Yearly variations in vegetation cover distributions were estimated from Moderate Resolution Imaging Spectroradiometer normalized difference vegetation index and compared to regional and subregional vegetation cover type estimates from the U.S. Department of Agriculture census. We first applied ISOLSM at a 250 m spatial scale to account for vegetation cover type and leaf area variations that occur on hundred meter scales. Because of computational constraints, we developed a subsampling scheme within 10 km 'macrocells' to perform these high-resolution simulations. We estimate that the Atmospheric Radiation Measurement Climate Research Facility SGP region net CO{sub 2} exchange with the local atmosphere was -240, -340, and -270 gC m{sup -2} yr{sup -1} (positive toward the atmosphere) in 2003, 2004, and 2005, respectively, with large seasonal variations. We also performed simulations using two scaling approaches at resolutions of 10, 30, 60, and 90 km. The scaling approach applied in current land surface models led to regional NEE biases of up to 50 and 20% in weekly and annual estimates, respectively. An important factor in causing these biases was the complex leaf area index (LAI) distribution within cover types. Biases in predicted weekly average regional latent heat fluxes were smaller than for NEE, but larger than for either ecosystem respiration or assimilation alone. However, spatial and diurnal variations of hundreds of W m{sup -2} in latent heat fluxes were common. We conclude that, in this heterogeneous system, characterizing vegetation cover type and LAI at the scale of spatial variation are necessary for accurate estimates of bottom-up, regional NEE and surface energy fluxes.

Riley, W. J.; Biraud, S.C.; Torn, M.S.; Fischer, M.L.; Billesbach, D.P.; Berry, J.A.

2009-08-15T23:59:59.000Z

133

CO2 Sequestration short course  

SciTech Connect (OSTI)

Given the public’s interest and concern over the impact of atmospheric greenhouse gases (GHGs) on global warming and related climate change patterns, the course is a timely discussion of the underlying geochemical and mineralogical processes associated with gas-water-mineral-interactions encountered during geological sequestration of CO2. The geochemical and mineralogical processes encountered in the subsurface during storage of CO2 will play an important role in facilitating the isolation of anthropogenic CO2 in the subsurface for thousands of years, thus moderating rapid increases in concentrations of atmospheric CO2 and mitigating global warming. Successful implementation of a variety of geological sequestration scenarios will be dependent on our ability to accurately predict, monitor and verify the behavior of CO2 in the subsurface. The course was proposed to and accepted by the Mineralogical Society of America (MSA) and The Geochemical Society (GS).

DePaolo, Donald J. [Lawrence Berkeley National Laboratory; Cole, David R [The Ohio State University; Navrotsky, Alexandra [University of California-Davis; Bourg, Ian C [Lawrence Berkeley National Laboratory

2014-12-08T23:59:59.000Z

134

CANMET CO2 Consortium - O2/CO2 Recycle Combustion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CANMET CO CANMET CO 2 Consortium - O 2 /CO 2 Recycle Combustion Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental

135

CO2 sorption and reaction kinetic performance of K2CO3/AC in low temperature and CO2 concentration  

Science Journals Connector (OSTI)

Abstract Reducing or removing CO2 is critical to the confined spaces such as submarines, space-crafts or aircrafts while using solid sorbents has been regarded as a promising method. In this work, K2CO3 loaded on activated carbon (K2CO3/AC) was developed as a new and regenerable sorbent for CO2 removing in confined spaces. CO2 sorption performances of K2CO3/AC were investigated under different conditions by varying the K2CO3 loadings, CO2 concentrations, H2O concentrations, CO2 sorption temperatures and water pretreatment durations as well as the purge gas flow rates. The CO2 sorption capacity and carbonation conversion of K2CO3/AC decrease with increasing temperature and increase with increasing mole ratio of H2O concentration over CO2 concentration. Sufficient water vapor pretreatment is found to be beneficial to the sorption-enhanced performance. Increasing flow rate will weaken the CO2 sorption performance. The carbonation kinetics was also investigated with the correlation between the shrinking core model and experimental data. Additionally, the sorbent is proved to be regenerable and stable during 20-cycle CO2 sorption–desorption experiments. K2CO3/AC presents high carbonation conversion efficiency, high thermal stability, and low dependency on CO2 partial pressure. Therefore, it can be considered as a new option for CO2 removal in confined spaces.

Yafei Guo; Chuanwen Zhao; Changhai Li; Ye Wu

2015-01-01T23:59:59.000Z

136

Uncertainty analyses of CO2 plume expansion subsequent to wellbore CO2 leakage into aquifers  

SciTech Connect (OSTI)

In this study, we apply an uncertainty quantification (UQ) framework to CO2 sequestration problems. In one scenario, we look at the risk of wellbore leakage of CO2 into a shallow unconfined aquifer in an urban area; in another scenario, we study the effects of reservoir heterogeneity on CO2 migration. We combine various sampling approaches (quasi-Monte Carlo, probabilistic collocation, and adaptive sampling) in order to reduce the number of forward calculations while trying to fully explore the input parameter space and quantify the input uncertainty. The CO2 migration is simulated using the PNNL-developed simulator STOMP-CO2e (the water-salt-CO2 module). For computationally demanding simulations with 3D heterogeneity fields, we combined the framework with a scalable version module, eSTOMP, as the forward modeling simulator. We built response curves and response surfaces of model outputs with respect to input parameters, to look at the individual and combined effects, and identify and rank the significance of the input parameters.

Hou, Zhangshuan; Bacon, Diana H.; Engel, David W.; Lin, Guang; Fang, Yilin; Ren, Huiying; Fang, Zhufeng

2014-08-01T23:59:59.000Z

137

Current State of Literature on CO2 Clathrate Hydrates -- Transport Related Issues  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

State of Literature on State of Literature on CO 2 Clathrate Hydrates Transport Related Issues Transport Related Issues Hydrate in suspension models Model (3) Model (3) Analysis Analysis Perforated plate models Model (2) Model (2) Analysis Analysis CO2 Permeable Plate models Model (2) Model (2) Analysis Analysis Transport model and analysis Wrong or no physical basis Not proven correct Correct and/or consistent CO 2 Transport Mechanisms in the literature: CO 2 H 2 O diffuse boundary layer Concentra tion r C o C infty C h1 C h2 C i C o : Conc. of pure liq CO 2 C h1 : Conc. of CO2 at full occupancy C h2 : Conc.of CO 2 in hydrate at interface that in equil with water saturated with CO 2 . C i : Conc. of CO 2 in liq. water adjoining hydrate C infty

138

AZ CO2 Storage Pilot  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Storage Pilot Regional Carbon Sequestration Partnerships Initiative Review Meeting Pittsburgh, Pennsylvania October 7, 2008 John Henry Beyer, Ph.D. WESTCARB Program Manager, Geophysicist 510-486-7954, jhbeyer@lbl.gov Lawrence Berkeley National Laboratory Earth Sciences Division, MS 90-1116 Berkeley, CA 94720 2 WESTCARB region has major CO2 point sources 3 WESTCARB region has many deep saline formations - candidates for CO2 storage WESTCARB also created GIS layers for oil/gas fields and deep coal basins Source: DOE Carbon Sequestration Atlas of the United States and Canada 4 - Aspen Environmental - Bevilacqua-Knight, Inc. Arizona Utilities CO2 Storage Pilot Contracting and Funding Flow Department of Energy National Energy Technology Laboratory Lawrence Berkeley National

139

10 MW Supercritical CO2 Turbine Test  

SciTech Connect (OSTI)

The Supercritical CO2 Turbine Test project was to demonstrate the inherent efficiencies of a supercritical carbon dioxide (s-CO2) power turbine and associated turbomachinery under conditions and at a scale relevant to commercial concentrating solar power (CSP) projects, thereby accelerating the commercial deployment of this new power generation technology. The project involved eight partnering organizations: NREL, Sandia National Laboratories, Echogen Power Systems, Abengoa Solar, University of Wisconsin at Madison, Electric Power Research Institute, Barber-Nichols, and the CSP Program of the U.S. Department of Energy. The multi-year project planned to design, fabricate, and validate an s-CO2 power turbine of nominally 10 MWe that is capable of operation at up to 700°C and operates in a dry-cooled test loop. The project plan consisted of three phases: (1) system design and modeling, (2) fabrication, and (3) testing. The major accomplishments of Phase 1 included: Design of a multistage, axial-flow, s-CO2 power turbine; Design modifications to an existing turbocompressor to provide s-CO2 flow for the test system; Updated equipment and installation costs for the turbomachinery and associated support infrastructure; Development of simulation tools for the test loop itself and for more efficient cycle designs that are of greater commercial interest; Simulation of s-CO2 power cycle integration into molten-nitrate-salt CSP systems indicating a cost benefit of up to 8% in levelized cost of energy; Identification of recuperator cost as a key economic parameter; Corrosion data for multiple alloys at temperatures up to 650ºC in high-pressure CO2 and recommendations for materials-of-construction; and Revised test plan and preliminary operating conditions based on the ongoing tests of related equipment. Phase 1 established that the cost of the facility needed to test the power turbine at its full power and temperature would exceed the planned funding for Phases 2 and 3. Late in Phase 1 an opportunity arose to collaborate with another turbine-development team to construct a shared s-CO2 test facility. The synergy of the combined effort would result in greater facility capabilities than either separate project could produce and would allow for testing of both turbine designs within the combined budgets of the two projects. The project team requested a no-cost extension to Phase 1 to modify the subsequent work based on this collaborative approach. DOE authorized a brief extension, but ultimately opted not to pursue the collaborative facility and terminated the project.

Turchi, Craig

2014-01-29T23:59:59.000Z

140

CO2 Utilization | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

CO2 CO2 Utilization CO2 Utilization Carbon dioxide (CO2) use and reuse efforts focus on the conversion of CO2 to useable products and fuels that will reduce CO2 emissions in areas where geologic storage may not be an optimal solution. These include: Enhanced Oil/Gas Recovery - Injecting CO2 into depleting oil or gas bearing fields to maximize the amount of CO2 that could be stored as well as maximize hydrocarbon production. CO2 as Feedstock - Use CO2 as a feedstock to produce chemicals (including fuels and polymers) and find applications for the end products. Non-Geologic Storage of CO2 - Use CO2 from an effluent stream to immobilize the CO2 permanently by producing stable solid material that are either useful products with economic value or a low cost produced material.

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141

NETL: 2011 Conference Proceedings - 2011 NETL CO2 Capture Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2011 NETL CO2 Capture Technology Meeting 2011 NETL CO2 Capture Technology Meeting August 22 - 26, 2011 Previous Proceedings 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting 2010: 2010 NETL CO2 Capture Technology Meeting Proceedings of the 2011 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, August 22 Opening/Overview Post-combustion Sorbent-Based Capture Post-combustion Membrane-Based Capture Tuesday, August 23 Post-combustion Solvent-Based Capture ARPA-E Capture Projects Wednesday, August 24 Oxy-Combustion and Oxygen Production Chemical Looping Process CO2 Compression Thursday, August 25 FutureGen 2.0, CCPI and ICCS Demonstration Projects System Studies and Modeling Pre-Combustion Capture Projects Friday, August 26 Pre-combustion Capture Projects Posters

142

CO2 | OpenEI  

Open Energy Info (EERE)

CO2 CO2 Dataset Summary Description Emissions from energy use in buildings are usually estimated on an annual basis using annual average multipliers. Using annual numbers provides a reasonable estimation of emissions, but it provides no indication of the temporal nature of the emissions. Therefore, there is no way of understanding the impact on emissions from load shifting and peak shaving technologies such as thermal energy storage, on-site renewable energy, and demand control. Source NREL Date Released April 11th, 2011 (3 years ago) Date Updated April 11th, 2011 (3 years ago) Keywords buildings carbon dioxide emissions carbon footprinting CO2 commercial buildings electricity emission factors ERCOT hourly emission factors interconnect nitrogen oxides NOx SO2 sulfur dioxide emissions

143

Update on CO2 emissions  

SciTech Connect (OSTI)

Emissions of CO2 are the main contributor to anthropogenic climate change. Here we present updated information on their present and near-future estimates. We calculate that global CO2 emissions from fossil fuel burning decreased by 1.3% in 2009 owing to the global financial and economic crisis that started in 2008; this is half the decrease anticipated a year ago1. If economic growth proceeds as expected2, emissions are projected to increase by more than 3% in 2010, approaching the high emissions growth rates that were observed from 2000 to 20081, 3, 4. We estimate that recent CO2 emissions from deforestation and other land-use changes (LUCs) have declined compared with the 1990s, primarily because of reduced rates of deforestation in the tropics5 and a smaller contribution owing to forest regrowth elsewhere.

Friedingstein, P. [University of Exeter, Devon, England; Houghton, R.A. [Woods Hole Research Center, Woods Hole, MA; Marland, Gregg [ORNL; Hackler, J. [Woods Hole Research Center, Woods Hole, MA; Boden, Thomas A [ORNL; Conway, T.J. [NOAA, Boulder, CO; Canadell, J.G. [CSIRO Marine and Atmospheric Research; Raupach, Mike [GCP, Canberra, Australia; Ciais, Philippe [Laboratoire des Sciences du Climat et de l'Environement, France; Le Quere, Corrine [University of East Anglia, Norwich, United Kingdom

2010-12-01T23:59:59.000Z

144

CO2 Mineral Sequestration Studies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sequestration Studies Sequestration Studies Introduction, Issues and Plans Philip Goldberg National Energy Technology Laboratory Workshop on CO 2 Sequestration with Minerals August 8, 2001 Mineral Sequestration Program Research effort seeks to refine and validate a promising CO 2 sequestration technology option, mineral sequestration also known as mineral carbonation Goals: * Understand the fundamental mechanisms involved in mineral carbonation * Generate data to support process development * Operate continuous, integrated small-scale process unit to support design Current Partnerships In order to effectively develop Mineral Sequestration, a multi-laboratory Working Group was formed in the Summer of 1998, participants include: * Albany Research Center * Arizona State University * Los Alamos National Laboratory

145

Northern California CO2 Reduction Project  

SciTech Connect (OSTI)

C6 Resources LLC, a wholly owned subsidiary of Shell Oil Company, worked with the US Department of Energy (DOE) under a Cooperative Agreement to develop the Northern California CO2 Reduction Project. The objective of the Project is to demonstrate the viability of using Carbon Capture and Sequestration (CCS) to reduce existing greenhouse gas emissions from industrial sources on a large-scale. The Project will capture more than 700,000 metric tonnes of CO2 per year, which is currently being vented to the atmosphere from the Shell Martinez Refinery in Contra Costa County. The CO2 will be compressed and dehydrated at the refinery and then transported via pipeline to a sequestration site in a rural area in neighboring Solano County. The CO2 will be sequestered into a deep saline formation (more than two miles underground) and will be monitored to assure secure, long-term containment. The pipeline will be designed to carry as much as 1,400,000 metric tonnes of CO2 per year, so additional capacity will be available to accommodate CO2 captured from other industrial sources. The Project is expected to begin operation in 2015. The Project has two distinct phases. The overall objective of Phase 1 was to develop a fully definitive design basis for the Project. The Cooperative Agreement with the DOE provided cost sharing for Phase 1 and the opportunity to apply for additional DOE cost sharing for Phase 2, comprising the design, construction and operation of the Project. Phase 1 has been completed. DOE co-funding is provided by the American Recovery and Reinvestment Act (ARRA) of 2009. As prescribed by ARRA, the Project will stimulate the local economy by creating manufacturing, transportation, construction, operations, and management jobs while addressing the need to reduce greenhouse gas emissions at an accelerated pace. The Project, which will also assist in meeting the CO2 reduction requirements set forth in California?s Climate Change law, presents a major opportunity for both the environment as well as the region. C6 Resources is conducting the Project in collaboration with federally-funded research centers, such as Lawrence Berkeley National Lab and Lawrence Livermore National Lab. C6 Resources and Shell have identified CCS as one of the critical pathways toward a worldwide goal of providing cleaner energy. C6 Resources, in conjunction with the West Coast Regional Carbon Sequestration Partnership (WESTCARB), has conducted an extensive and ongoing public outreach and CCS education program for local, regional and state-wide stakeholders. As part of a long term relationship, C6 Resources will continue to engage directly with community leaders and residents to ensure public input and transparency. This topical report summarizes the technical work from Phase 1 of the Project in the following areas: ? Surface Facility Preliminary Engineering: summarizes the preliminary engineering work performed for CO2 capture, CO2 compression and dehydration at the refinery, and surface facilities at the sequestration site ? Pipeline Preliminary Engineering: summarizes the pipeline routing study and preliminary engineering design ? Geologic Sequestration: summarizes the work to characterize, model and evaluate the sequestration site ? Monitoring, Verification and Accounting (MVA): summarizes the MVA plan to assure long-term containment of the sequestered CO2

Hymes, Edward

2010-06-16T23:59:59.000Z

146

Interactions between reducing CO2 emissions, CO2 removal and solar radiation management  

Science Journals Connector (OSTI)

...the geological storage capacity for CO2. For the SRM...reduction in incoming solar radiation that fully...3. Results (a) Solar radiation management...scale set by the heat capacity in the model. For s2030srm2015...reduction in incoming solar radiation in the first...

2012-01-01T23:59:59.000Z

147

8, 73737389, 2008 Scientists' CO2  

E-Print Network [OSTI]

ACPD 8, 7373­7389, 2008 Scientists' CO2 emissions A. Stohl Title Page Abstract Introduction substantial emissions of carbon dioxide (CO2). In this pa- per, the CO2 emissions of the employees working, the total annual per capita CO2 emissions are 4.5 t worldwide, 1.2 t for India, 3.8 t for China, 5

Paris-Sud XI, Université de

148

NETL: 2010 Conference Proceedings - 2010 NETL CO2 Capture Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2010 NETL CO2 Capture Technology Meeting 2010 NETL CO2 Capture Technology Meeting September 13-17, 2010 Table of Contents Presentations Monday, September 13 Opening/Overview Post-combustion Sorbent Based Capture Post-combustion Solvent Based Capture Tuesday, September 14 Post-combustion Membrane Based Capture Pulverized Coal Oxy-combustion ARPA-E Projects Wednesday, September 15 National Carbon Capture Center Chemical Looping Processes Systems Studies and Modeling Efforts CO2 Compression New CO2 Capture Projects Thursday, September 16 New CO2 Capture Projects - Cont'd CCPI and ICCS Demonstration Projects Pre-combustion Capture Projects Friday, September 17 Pre-combustion Capture Projects - Cont'd Posters Advanced Research Projects Agency - Energy (ARPA-E) NETL Office of Research and Development Research Projects

149

Short communication Satellite-derived surface water pCO2 and airsea CO2 fluxes  

E-Print Network [OSTI]

Short communication Satellite-derived surface water pCO2 and air­sea CO2 fluxes in the northern for the estimation of the partial pressure of carbon dioxide (pCO2) and air­sea CO2 fluxes in the northern South), respectively, the monthly pCO2 fields were computed. The derived pCO2 was compared with the shipboard pCO2

150

Small Scale Field Test Demonstrating CO2 sequestration in Arbuckle Saline Aquifer and by CO2-EOR at Wellington field, Sumner County, Kansas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Scale Field Test Demonstrating CO Scale Field Test Demonstrating CO 2 sequestration in Arbuckle Saline Aquifer and by CO 2 -EOR at Wellington field, Sumner County, Kansas -- W. Lynn Watney and Jason Rush Kansas Geological Survey Lawrence, KS 66047 Regional Carbon Sequestration Partnerships Annual Review Meeting October 15-17, 2011 Pittsburgh, PA Funding Opportunity Number: DE-FOA-0000441 Contract #FE0006821 $11,484,499 DOE $3.236 million cost share KANSAS STATE UNIVERSITY 12/2/2011 1 Outline * Background * The Participants * The Plan * Leveraging Current Research at Wellington Field * Inject, Monitor, Verification, and Accounting of CO 2 2 ORGANIZATION CHART Kansas Geological Survey Name Project Job Title Primary Responsibility Lynn Watney Project Leader, Joint Principal Investigator

151

Electron drift velocity in CO2 laser mixtures  

Science Journals Connector (OSTI)

A modified Bradbury-Nielsen grid system has been used to measure...W in two gas mixtures of special interest when modelling h.p. CO2 lasers. The results are compared with the theoretical values obtained with the ...

G. L. Braglia; L. Romanò; W. Roznerski

152

Pore-scale simulation of liquid CO2 displacement of water using...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pore-scale simulation of liquid CO2 displacement of water using a two-phase lattice Boltzmann model. Pore-scale simulation of liquid CO2 displacement of water using a two-phase...

153

Properties of CO2-Rich Pore Fluids and Their Effect on Porosity Evolution in EGS Rocks  

Broader source: Energy.gov [DOE]

Project objective: Quantify key parameters critically needed for developing and validating numerical modeling of chemical interactions between EGS reservoir rocks and supercritical CO2and CO2-rich aqueous fluids.

154

Lifetime of Anthropogenic Climate Change: Millennial Time Scales of Potential CO2 and Surface Temperature Perturbations  

Science Journals Connector (OSTI)

Multimillennial simulations with a fully coupled climate–carbon cycle model are examined to assess the persistence of the climatic impacts of anthropogenic CO2 emissions. It is found that the time required to absorb anthropogenic CO2 strongly ...

M. Eby; K. Zickfeld; A. Montenegro; D. Archer; K. J. Meissner; A. J. Weaver

2009-05-01T23:59:59.000Z

155

CO2 http://andrew.ucsd.edu/co2qc/ University of California, San Diego  

E-Print Network [OSTI]

cooled by liquid nitrogen. The water and CO2 are separated from one another by sublimation and the CO2 for oceanic CO2 analysis: A method for the certification of total alkalinity. Marine Chemistry 80, 185

156

CO2-Emissionszertifikate - Preismodellierung und Derivatebewertung.  

E-Print Network [OSTI]

??EU-Unternehmen müssen seit 2005 entsprechend ihrem CO2-Ausstoß genügend Emissionszertifikate einreichen. Da die Zertifikate frei handelbar sind, stellt sich ihnen CO2 als ein zusätzlicher Produktionsfaktor mit… (more)

Wagner, Michael W.

2007-01-01T23:59:59.000Z

157

Engineered yeast for enhanced CO2 mineralization  

E-Print Network [OSTI]

In this work, a biologically catalysed CO2 mineralization process for the capture of CO2 from point sources was designed, constructed at a laboratory scale, and, using standard chemical process scale-up protocols, was ...

Barbero, Roberto Juan

2013-01-01T23:59:59.000Z

158

QGESS: CO2 Impurity Design Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

10. Shah, Minish. Capturing CO2 from Oxy-Fuel Combustion Flue Gas. Cottbus, Germany : Praxair Inc., 2005. 11. Spitznogle, Gary O. CO2 Impurity Specification at AEP Mountaineer....

159

Legal Implications of CO2 Ocean Storage  

E-Print Network [OSTI]

, ocean currents may prevent stagnation or accumulatioLegal Implications of CO2 Ocean Storage Jason Heinrich Working Paper Laboratory for Energy #12;Introduction Ocean sequestration of CO2, a potentially significant technique to be used

160

CO2 please | ornl.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 please CO2 please ORNL researchers look to carbon dioxide as a more environmentally friendly refrigerant gas In an indoor research area, Brian Fricke preps display cases for...

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

CO2 laser frequency multiplication  

SciTech Connect (OSTI)

The duration of the mode-locked CO(2) laser pulses was measured to be 0.9 + or - nsec by the technique of (second harmonic) autocorrelation. Knowing the pulse duration, the spot size, and the harmonic conversion efficiency, a detailed fit of experiment to theory gave an estimate of the nonlinear coefficient of AgGaSe(2). d36 = 31 + or - V(1), in agreement with the most accurate literature values. A number of experiments were made with longer pulse trains in which the highest harmonic energy conversion reached 78%. The damage threshold was measured and it turned out to be related much more strongly to fluence than intensity. The shorter pulse trains had peak intensities of close to 300 MW 1/cm squared whereas the longer trains (3 usec) had intensities up to 40 MW 1/cm squared.

Not Available

1992-03-01T23:59:59.000Z

162

Carbon monoxide oxidation on Rh(111): Velocity and angular distributions of the CO2 product  

E-Print Network [OSTI]

Carbon monoxide oxidation on Rh(111): Velocity and angular distributions of the CO2 product J. I and angular distributions of CO2 produced by CO oxidation on Rh 111 have been measured as a function a fundamental and a practical point of view. CO2 formation serves as a model recombina- tion reaction

Sibener, Steven

163

Allocation of Transportation Cost & CO2 Emission in Pooled Supply Chains Using  

E-Print Network [OSTI]

Allocation of Transportation Cost & CO2 Emission in Pooled Supply Chains Using Cooperative Game and the transport CO2 emissions. In this regard, this paper introduces a scheme to share in a fairly manner the savings. After a summary of the concept of pooled-supply-networks optimization and CO2 emission model, we

Boyer, Edmond

164

K/S Relay Issue 4  

E-Print Network [OSTI]

?' lEEL^U A CONTENTS This Deadly Innocence or "The End of the Hurt/Comfort Syndrome" by Leslie Fish 5 Axtivonk by Roo. Re.pA*.\\ite.d &Aom Nake.d Th)\\eA 3. **************** Lester's Complaint by Leslie Fish 68 Aitwoxk by Ann Hamplviey Rep...Alal. K/S RELAY 4 1982 (c) Janet Hunt. Once again Relay is reprinting some of Leslie Fish's marvellous K/S stories, THIS DEADLY INNOCENCE or The End of the Hurt/Comfort Syndrome is, in my opinion, just about the most exciting and well written story...

Fish, L.; Rathbone, W.

1982-01-01T23:59:59.000Z

165

Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain,  

Open Energy Info (EERE)

Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain, Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain, California- Performance Evaluation And Role Of Meteorological Forcing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain, California- Performance Evaluation And Role Of Meteorological Forcing Details Activities (1) Areas (1) Regions (0) Abstract: CO2 and heat fluxes were measured over a six-week period (09/08/2006 to 10/24/2006) by the eddy covariance (EC) technique at the Horseshoe Lake tree kill (HLTK), Mammoth Mountain, CA, a site with complex terrain and high, spatially heterogeneous CO2 emission rates. EC CO2 fluxes ranged from 218 to 3500 g m- 2 d- 1 (mean = 1346 g m- 2 d- 1). Using footprint modeling, EC CO2 fluxes were compared to CO2 fluxes measured by

166

Abstract 5554: PBI-05204, a supercritical CO2 extract of Nerium oleander, inhibits the growth of human pancreatic cancer in a Panc-1 orthotopic model by down-regulation of PI3k/mTOR pathways.  

Science Journals Connector (OSTI)

...Abstract 5554: PBI-05204, a supercritical CO2 extract of Nerium oleander, inhibits the...botanical drug PBI-05204, a supercritical CO2 extract of Nerium oleander, was examined...Peiying Yang. PBI-05204, a supercritical CO2 extract of Nerium oleander, inhibits the...

Yong Pan; Sun-Jin Kim; Patrea Rhea; Carrie Cartwright; Ho Jeong Lee; Crandell Addington; Mihai Gagea; Robert A. Newman; Peiying Yang

2013-08-14T23:59:59.000Z

167

Opportunities for Using Anthropogenic CO2 for Enhanced Oil Recovery and CO2 Storage  

Science Journals Connector (OSTI)

Colorado and Wyoming ... At the end of a CO2 flood, essentially all of the CO2 that is originally purchased is stored in the reservoir when the operator closes the field at pressure. ... Under special conditions, such as gravity-stable CO2 flooding, the CO2-EOR process can store considerably more CO2 than the carbon content of the oil (Figure 7). ...

Michael L. Godec; Vello A. Kuuskraa; Phil Dipietro

2013-02-07T23:59:59.000Z

168

Transient Responses of a Coupled Ocean–Atmosphere Model to Gradual Changes of Atmospheric CO2. Part I. Annual Mean Response  

Science Journals Connector (OSTI)

This study investigates the response of a climate model to a gradual increase or decrease of atmospheric carbon dioxide. The model is a general circulation model of the coupled atmosphere-ocean-land surface system with global geography and ...

S. Manabe; R. J. Stouffer; M. J. Spelman; K. Bryan

1991-08-01T23:59:59.000Z

169

A Novel CO2 Separation System  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel CO Novel CO 2 Separation System Robert J. Copeland (copeland@tda.com 303-940-2323) Gokhan Alptekin (galtpekin@tda.com 303 940-2349) Mike Cesario (czar@tda.com 303-940-2336) Yevgenia Gershanovich (ygershan@tda.com 303-940-2346) TDA Research, Inc. 12345 West 52 nd Avenue Wheat Ridge, Colorado 80033-1917 Project Summary NEED Concern over global climate change has led to a need to reduce CO 2 emissions from power plants. Unfortunately, current CO 2 capture processes reduce the efficiency with which fuel can be converted to electricity by 9-37%, and CO 2 capture costs can exceed $70 per tonne 1 of CO 2 (Herzog, Drake, and Adams 1997). OBJECTIVE To generate electricity with little reduction in conversion efficiency while emitting little or no CO 2 to the atmosphere, TDA Research, Inc. (TDA) is developing a Novel CO

170

CO2 Sequestration in Basalt Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 SequeStratiOn in BaSalt FOrmatiOnS Background There is growing concern that buildup of greenhouse gases, especially carbon dioxide (CO 2 ), in the atmosphere is contributing to global climate change. One option for mitigating this effect is to sequester CO 2 in geologic formations. Numerous site assessments for geologic sequestration of CO 2 have been conducted in virtually every region of the United States. For the most part, these studies have involved storing CO 2 in saline formation, deep coal seams, and depleted oil and gas reservoirs. Another option, however, is basalt formations. Basalt is a dark-colored, silica-rich, volcanic rock that contains cations-such as calcium, magnesium, and iron-that can combine with CO 2 to form carbonate minerals. Basalt formations have not received much

171

Surface Condensation of CO2 onto Kaolinite. | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Condensation of CO2 onto Kaolinite. Surface Condensation of CO2 onto Kaolinite. Abstract: The fundamental adsorption behavior of gaseous and supercritical carbon dioxide (CO2) onto...

172

CO2 Heat Pump Water Heater  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

CO 2 Heat Pump Water Heater 2014 Building Technologies Office Peer Review Evaporator Kyle Gluesenkamp, gluesenkampk@ornl.gov Oak Ridge National Laboratory Project Summary Timeline:...

173

A model-data intercomparison of CO2 exchange across North America: Results from the North American Carbon Program Site Synthesis  

SciTech Connect (OSTI)

Our current understanding of terrestrial carbon processes is represented in various models used to integrate and scale measurements of CO{sub 2} exchange from remote sensing and other spatiotemporal data. Yet assessments are rarely conducted to determine how well models simulate carbon processes across vegetation types and environmental conditions. Using standardized data from the North American Carbon Program we compare observed and simulated monthly CO{sub 2} exchange from 44 eddy covariance flux towers in North America and 22 terrestrial biosphere models. The analysis period spans {approx}220 site-years, 10 biomes, and includes two large-scale drought events, providing a natural experiment to evaluate model skill as a function of drought and seasonality. We evaluate models' ability to simulate the seasonal cycle of CO{sub 2} exchange using multiple model skill metrics and analyze links between model characteristics, site history, and model skill. Overall model performance was poor; the difference between observations and simulations was {approx}10 times observational uncertainty, with forested ecosystems better predicted than nonforested. Model-data agreement was highest in summer and in temperate evergreen forests. In contrast, model performance declined in spring and fall, especially in ecosystems with large deciduous components, and in dry periods during the growing season. Models used across multiple biomes and sites, the mean model ensemble, and a model using assimilated parameter values showed high consistency with observations. Models with the highest skill across all biomes all used prescribed canopy phenology, calculated NEE as the difference between GPP and ecosystem respiration, and did not use a daily time step.

Schwalm, C.R.; Williams, C.A.; Schaefer, K.; Anderson, R.; Arain, M.A.; Baker, I.; Black, T.A.; Chen, G.; Ciais, P.; Davis, K. J.; Desai, A. R.; Dietze, M.; Dragoni, D.; Fischer, M.L.; Flanagan, L.B.; Grant, R.F.; Gu, L.; Hollinger, D.; Izaurralde, R.C.; Kucharik, C.; Lafleur, P.M.; Law, B.E.; Li, L.; Li, Z.; Liu, S.; Lokupitiya, E.; Luo, Y.; Ma, S.; Margolis, H.; Matamala, R.; McCaughey, H.; Monson, R. K.; Oechel, W. C.; Peng, C.; Poulter, B.; Price, D.T.; Riciutto, D.M.; Riley, W.J.; Sahoo, A.K.; Sprintsin, M.; Sun, J.; Tian, H.; Tonitto, C.; Verbeeck, H.; Verma, S.B.

2011-06-01T23:59:59.000Z

174

Tropical Cyclone Simulation and Response to CO2 Doubling in the GFDL CM2.5 High-Resolution Coupled Climate Model  

Science Journals Connector (OSTI)

Global tropical cyclone (TC) activity is simulated by the Geophysical Fluid Dynamics Laboratory (GFDL) Climate Model, version 2.5 (CM2.5), which is a fully coupled global climate model with a horizontal resolution of about 50 km for the atmosphere ...

Hyeong-Seog Kim; Gabriel A. Vecchi; Thomas R. Knutson; Whit G. Anderson; Thomas L. Delworth; Anthony Rosati; Fanrong Zeng; Ming Zhao

2014-11-01T23:59:59.000Z

175

The supply chain of CO2 emissions  

Science Journals Connector (OSTI)

...secondary fuels (e.g., diesel, gasoline, electricity, etc.), which...Warming and Energy Policy , Free-market approaches to controlling...ofnatural gas (MtCO2) GDP[B$, Market Exchange Rate(MER...ofnatural gas (MtCO2) GDP[B$, Market Exchange Rate(MER...

Steven J. Davis; Glen P. Peters; Ken Caldeira

2011-01-01T23:59:59.000Z

176

Interactions of Supercritical CO2 with Coal  

Science Journals Connector (OSTI)

Carbon dioxide (CO2) mainly emitted from fossil fuel combustion causes global warming. ... (23) CO2 and methane might penetrate the coal matrix and cause coals to expand to some extent. ... Four coals ranging in carbon content from 77 to 84% C were warmed in the weak swelling solvent chlorobenzene at 132°C for 2 wk, and samples were withdrawn at intervals. ...

Dengfeng Zhang; Lili Gu; Songgeng Li; Peichao Lian; Jun Tao

2012-12-15T23:59:59.000Z

177

Sequestration of CO2 by Concrete Carbonation  

Science Journals Connector (OSTI)

Sequestration of CO2 by Concrete Carbonation ... Carbonation of reinforced concrete is one of the causes of corrosion, but it is also a way to sequester CO2. ... This work attempts to advance the knowledge of the carbon footprint of cement. ...

Isabel Galan; Carmen Andrade; Pedro Mora; Miguel A. Sanjuan

2010-03-12T23:59:59.000Z

178

Absorption of 9.6-?m CO2 laser radiation by CO2 at elevated temperatures  

Science Journals Connector (OSTI)

Absorption of 9.6-?m CO2 laser radiation by CO2 at temperatures between 296 and 625 K has been measured at a pressure of 200 Torr. Experimental results for the...

Robinson, A M

1983-01-01T23:59:59.000Z

179

Study of CO 2 Mobility Control in Heterogeneous Media Using CO 2 Thickening Agents  

E-Print Network [OSTI]

CO 2 injection is an effective method for performing enhanced oil recovery (EOR). There are several factors that make CO 2 useful for EOR, including promoting swelling, reducing oil viscosity, decreasing oil density, and vaporizing and extracting...

Al Yousef, Zuhair

2012-10-19T23:59:59.000Z

180

Interactions between reducing CO2 emissions, CO2 removal and solar radiation management  

Science Journals Connector (OSTI)

...World Energy Council. 41 World Energy Council.2009 Survey of energy resources interim update 2009. London, UK: World Energy Council. 42 Haszeldine, R. S...CO2 emissions, CO2 removal and solar radiation management. | We use...

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

NETL: NATCARB - CO2 Storage Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Storage Formations Storage Formations NATCARB CO2 Storage Formations CO2 Storage Resource Methodology NATCARB Viewer The NATCARB Viewer is available at: http://www.natcarbviewer.com. 2012 Atlas IV DOE's Regional Carbon Sequestration Partnerships (RCSPs) were charged with providing a high-level, quantitative estimate of carbon dioxide (CO2) storage resource available in subsurface environments of their regions. Environments considered for CO2 storage were categorized into five major geologic systems: oil and gas reservoirs, unmineable coal areas, saline formations, shale, and basalt formations. Where possible, CO2 storage resource estimates have been quantified for oil and gas reservoirs, saline formations, and unmineable coal in the fourth edition of the United States Carbon Utilization and Storage Atlas (Atlas IV). Shale and basalt

182

Two-Temperature Two-Dimensional Non Chemical Equilibrium Modeling of Ar–CO2–H2 Induction Thermal Plasmas at Atmospheric Pressure  

Science Journals Connector (OSTI)

Here the authors developed a two-dimensional two-temperature chemical non-equilibrium (2T-NCE) model of Ar–...2–H2 inductively coupled thermal plasmas (ICTP) around atmospheric pressure (760 torr). Assuming 22 di...

Sharif Abdullah Al-Mamun; Yasunori Tanaka…

2010-02-01T23:59:59.000Z

183

Sustainable Carbon Sequestration: Increasing CO2-Storage Efficiency through a CO2-Brine Displacement Approach  

E-Print Network [OSTI]

CO2 sequestration is one of the proposed methods for reducing anthropogenic CO2 emissions to the atmosphere and therefore mitigating global climate change. Few studies on storing CO2 in an aquifer have been conducted on a regional scale. This study...

Akinnikawe, Oyewande

2012-10-19T23:59:59.000Z

184

Upper bound of polymeric membranes for mixed-gas CO2/CH4 separations  

Science Journals Connector (OSTI)

Abstract Membrane polymers with high permeability and high selectivity are preferred for gas separations. However, there exists a trade-off or upper bound, i.e., polymers with higher permeability often exhibit lower selectivity, and vice versa. The upper bound for separation of various gas pairs has been empirically drawn and theoretically rationalized using pure-gas data. However, for CO2/CH4 separation, the high pressure CO2 and non-methane hydrocarbons can plasticize polymers, increasing mixed-gas CO2 permeability and decreasing mixed-gas CO2/CH4 selectivity. This study aims to apply a modified free volume theory to interpret CO2/CH4 separation performance in polymeric membranes. The model satisfactorily describes the pure-gas upper bounds for various gas pairs including CO2/CH4, the effect of high pressure CO2 on mixed-gas CO2/CH4 separation properties, and the practical mixed-gas upper bound for CO2/CH4 separations. The CO2 is found to have an estimated glass transition temperature of 108 K. The assumptions of this model are discussed, and future work to improve this model is proposed.

Haiqing Lin; Milad Yavari

2015-01-01T23:59:59.000Z

185

Reactive transport modeling to study changes in water chemistry induced by CO2 injection at the Frio-I brine pilot  

SciTech Connect (OSTI)

To demonstrate the potential for geologic storage of CO{sub 2} in saline aquifers, the Frio-I Brine Pilot was conducted, during which 1600 tons of CO{sub 2} were injected into a high-permeability sandstone and the resulting subsurface plume of CO{sub 2} was monitored using a variety of hydrogeological, geophysical, and geochemical techniques. Fluid samples were obtained before CO{sub 2} injection for baseline geochemical characterization, during the CO{sub 2} injection to track its breakthrough at a nearby observation well, and after injection to investigate changes in fluid composition and potential leakage into an overlying zone. Following CO{sub 2} breakthrough at the observation well, brine samples showed sharp drops in pH, pronounced increases in HCO{sub 3}{sup -} and aqueous Fe, and significant shifts in the isotopic compositions of H{sub 2}O and dissolved inorganic carbon. Based on a calibrated 1-D radial flow model, reactive transport modeling was performed for the Frio-I Brine Pilot. A simple kinetic model of Fe release from the solid to aqueous phase was developed, which can reproduce the observed increases in aqueous Fe concentration. Brine samples collected after half a year had lower Fe concentrations due to carbonate precipitation, and this trend can be also captured by our modeling. The paper provides a method for estimating potential mobile Fe inventory, and its bounding concentration in the storage formation from limited observation data. Long-term simulations show that the CO{sub 2} plume gradually spreads outward due to capillary forces, and the gas saturation gradually decreases due to its dissolution and precipitation of carbonates. The gas phase is predicted to disappear after 500 years. Elevated aqueous CO{sub 2} concentrations remain for a longer time, but eventually decrease due to carbonate precipitation. For the Frio-I Brine Pilot, all injected CO{sub 2} could ultimately be sequestered as carbonate minerals.

Kharaka, Y.K; Doughty, C.; Freifeld, B.M.; Daley, T.M.; Xu, T.

2009-11-01T23:59:59.000Z

186

An integrated experimental and numerical study: Developing a reaction transport model that couples chemical reactions of mineral dissolution/precipitation with spatial and temporal flow variations in CO2/brine/rock systems  

Broader source: Energy.gov [DOE]

Project objectives: Generate and characterize mineral dissolution/precipitation reactions in supercritical CO2/brine/rock systems under pressure-temperature-chemistry conditions resembling CO2injection into EGS. Characterize three-dimensional spatial and temporal distributions of rock structures subject to mineral dissolution/precipitation processes by X-ray tomography, SEM imaging, and Microprobe analysis.

187

Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Concentrations on Human Decision-Making Performance Title Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Concentrations on Human Decision-Making Performance Publication Type Journal Article Refereed Designation Refereed LBNL Report Number LBNL-6196E Year of Publication 2012 Authors Satish, Usha, Mark J. Mendell, Krishnamurthy Shekhar, Toshifumi Hotchi, Douglas P. Sullivan, Siegfried Streufert, and William J. Fisk Journal Environmental Health Perspectives Volume 120 Issue 12 Pagination 1671-1677 Date Published 09/20/2012 Keywords carbon dioxide, cognition, Decision Making, human performance, indoor environmental quality, ventilation Abstract Background - Associations of higher indoor carbon dioxide (CO2) concentrations with impaired

188

CO2 Emissions from Fuel Combustion | Open Energy Information  

Open Energy Info (EERE)

CO2 Emissions from Fuel Combustion CO2 Emissions from Fuel Combustion Jump to: navigation, search Tool Summary Name: CO2 Emissions from Fuel Combustion Agency/Company /Organization: International Energy Agency Sector: Energy Topics: Baseline projection, GHG inventory Resource Type: Dataset, Publications Website: www.iea.org/co2highlights/co2highlights.pdf CO2 Emissions from Fuel Combustion Screenshot References: CO2 Emissions from Fuel Combustion[1] Overview "This annual publication contains: estimates of CO2 emissions by country from 1971 to 2008 selected indicators such as CO2/GDP, CO2/capita, CO2/TPES and CO2/kWh CO2 emissions from international marine and aviation bunkers, and other relevant information" Excel Spreadsheet References ↑ "CO2 Emissions from Fuel Combustion"

189

Microsoft Word - CO2 Supplement.doc  

Gasoline and Diesel Fuel Update (EIA)

Understanding the Decline in Carbon Dioxide Understanding the Decline in Carbon Dioxide Emissions in 2009 1 EIA projects carbon dioxide (CO2) emissions from fossil fuels in 2009 to be 5.9 percent below the 2008 level in the Short-Term Energy Outlook, October 2009 (STEO) (Table 1). Projected coal CO2 emissions fall by 10.1 percent in 2009, primarily because of lower consumption for electricity generation. Coal accounts for 63 percent of the total decline in CO2 emissions from fossil fuels this year. Forecast lower natural gas and petroleum emissions this year make up 7 percent and 30 percent of the projected total decline in CO2 emissions from fossil fuels, respectively. Table 1. Short-Term Energy Outlook CO

190

Increasing CO2 Storage in Oil Recovery  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Increasing CO Increasing CO 2 Storage in Oil Recovery Kristian Jessen (krisj@pangea.stanford.edu, 650-723-6348) Linda C. Sam-Olibale (chizoba@pangea.stanford.edu, 650-725-0831) Anthony R. Kovscek (kovscek@pangea.stanford.edu, 650-723-1218) Franklin M. Orr, Jr. (fmorr@pangea.stanford.edu, 650-723-2750) Department of Petroleum Engineering, Stanford University 65 Green Earth Sciences Building 367 Panama Street Stanford, CA 94305-2220 Introduction Carbon dioxide (CO 2 ) injection has been used as a commercial process for enhanced oil recovery (EOR) since the 1970's. Because the cost of oil recovered is closely linked to the purchase cost of the CO 2 injected, considerable reservoir engineering design effort has gone into reducing the total amount of CO 2 required to recover each barrel of oil. If,

191

Microsoft Word - TURBO EXPO CO2 draft  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MAN TURBO MAN TURBO CO2 Compression Challenges presented on May 15, 2007 at the ASME Turbo Expo, Montreal, CO2 Compression Panel By Pierre L. Bovon, MAN TURBO Calgary (pierre.bovon@ca.manturbo.com, tel. +403 233 7151) And Dr. Rolf Habel, MAN TURBO Berlin (rolf.habel@de.manturbo.com, tel. +49 304 301 2224) CO2 has been used for a very long time, for instance in the food industry, and most applications have required it to be compressed. For Sequestration or Enhanced Oil Recovery, the traditional approach to CO2 compression has been to use high-speed reciprocating compressors. The main reasons are: - Flexibility with regards to pressure ratio, and capacity (if equipped with variable speed drive or valve unloaders). - Short delivery times, since many recip. packagers dispose of a selection of frames

192

India Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

India India India Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends India's 2008 total fossil-fuel CO2 emissions rose 8.1% over the 2007 level to 475 million metric tons of carbon. From 1950 to 2008, India experienced dramatic growth in fossil-fuel CO2 emissions averaging 5.7% per year and becoming the world's third largest fossil-fuel CO2-emitting country. Indian total emissions from fossil-fuel consumption and cement production have more than doubled since 1994. Fossil-fuel emissions in India continue to result largely from coal burning with India being the world's third largest producer of coal. Coal contributed 87% of the emissions in 1950 and 71% in 2008; at the same time, the oil fraction increased from 11% to 20%. Indian emissions data reveal little impact from the oil price increases that

193

081001 CA CO2 Storage Pilot  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

California California CO2 Storage Pilot Regional Carbon Sequestration Partnerships Initiative Review Meeting Pittsburgh, Pennsylvania October 7, 2008 John Henry Beyer, Ph.D. WESTCARB Program Manager, Geophysicist 510-486-7954, jhbeyer@lbl.gov Lawrence Berkeley National Laboratory Earth Sciences Division, MS 90-1116 Berkeley, CA 94720 2 Industry Partner: Shell Oil Company Committed to reducing global CO2 emissions Extensive technical expertise in: - Geologic evaluation - Well log analysis - Porosity and permeability evaluation - Geophysics - Deep well drilling - CO2 injection A welcome industry partner 3 - Bevilacqua-Knight, Inc. (DOE/PIER) - Lawrence Berkeley National Lab (PIER) - Sandia Technologies, LLC (DOE/PIER) - Terralog (DOE) Northern California CO2 Storage Pilot Contracting and Funding Flow

194

CO2 Europipe | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » CO2 Europipe Jump to: navigation, search Tool Summary LAUNCH TOOL Name: CO2 Europipe Focus Area: Clean Fossil Energy Topics: Potentials & Scenarios Website: www.co2europipe.eu/ Equivalent URI: cleanenergysolutions.org/content/co2-europipe Language: English Policies: "Deployment Programs,Regulations,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Project Development Regulations: "Emissions Mitigation Scheme,Emissions Standards,Enabling Legislation" is not in the list of possible values (Agriculture Efficiency Requirements, Appliance & Equipment Standards and Required Labeling, Audit Requirements, Building Certification, Building Codes, Cost Recovery/Allocation, Emissions Mitigation Scheme, Emissions Standards, Enabling Legislation, Energy Standards, Feebates, Feed-in Tariffs, Fuel Efficiency Standards, Incandescent Phase-Out, Mandates/Targets, Net Metering & Interconnection, Resource Integration Planning, Safety Standards, Upgrade Requirements, Utility/Electricity Service Costs) for this property.

195

NETL: NATCARB - CO2 Stationary Sources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Stationary Sources Stationary Sources NATCARB CO2 Stationary Sources CO2 Stationary Source Emission Estimation Methodology NATCARB Viewer The NATCARB Viewer is available at: http://www.natcarbviewer.com. 2012 Atlas IV DOE's Regional Carbon Sequestration Partnerships (RCSPs) employed carbon dioxide (CO2) emissions estimate methodologies that are based on the most readily available representative data for that particular industry type within the respective partnership area. Carbon dioxide emissions data provided by databases (for example, eGRID, IEA GHG, or NATCARB) were the first choice for all of the RCSPs, both for identifying major CO2 stationary sources and for providing reliable emission estimations. Databases are considered to contain reliable and accurate data obtained

196

Enhanced CO2 Gas Storage in Coal  

Science Journals Connector (OSTI)

Greenhouse gas (GHG) such as carbon dioxide (CO2) is largely believed to be a primary contributor to global warming. ... Four coals of various rank exploited from four main coal seams in China were tested. ...

Shu-Qing Hao; Sungho Kim; Yong Qin; Xue-Hai Fu

2013-12-05T23:59:59.000Z

197

Methods for Integrated Leak Detection Inference at CO2 Sequestration Sites  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Methods for Integrated Leak Detection Inference at CO2 Sequestration Sites Methods for Integrated Leak Detection Inference at CO2 Sequestration Sites Speaker(s): Mitchell Small Date: March 23, 2010 - 12:00pm Location: 90-3122 This seminar will explain a methodology for combining site characterization and soil CO2 monitoring for detecting leaks at geologic CO2 sequestration sites. Near surface CO2 fluxes resulting from a leak are simulated using the TOUGH2 model for different values of soil permeability, leakage rate and vadose zone thickness. Natural background soil CO2 flux rates are characterized by a Bayesian hierarchical model that predicts the background flux as a function of soil temperature. A presumptive leak is assumed if the monitored flux rate exceeds a critical value corresponding to a very high (e.g., 99%) prediction interval for the natural flux conditioned on

198

Research on CO2 Emission Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Clean Energy Utilization of Clean Energy Utilization Zhejing University 29 th May, 2008 Status of CCS in China 2 nd U.S.-China Symposium on CO 2 Emission Control Science & Technology, Hangzhou China 28 th -30 th , May, 2008 Prof. Zhongyang Luo Global CO 2 Emissions Country CO 2 Emissions (Million Tons Carbon) 1990 1997 2001 2010 USA 1345 1480 1559 1800 China 620 822 832 1109 Former USSR 1034 646 654 825 Japan 274 297 316 334 World 5836 6175 6522 8512 Source: Energy Information Administration/International Energy Outlook 2001 Global CO 2 Emissions from Fossil Fuel Use in 2006 11.72 3,330 EU-15 5.75 1,620 Russia 4.3 1,210 Japan 20.17 5,680 China 20.42 5,750 USA 100 28,160 Total Percentage (%) CO 2 Emissions (1 million metric tons CO 2 ) Country BP Statistical Review of World Energy, June 2007 (http://www.bp.com/sectiongenericarticle.do?categoryId=6914&contentI

199

PLAINS CO2 REDUCTION PARTNERSHIP  

SciTech Connect (OSTI)

The PCOR Partnership continues to make great progress. Task 2 (Deployment Issues) activities have focused on utilizing Dakota Gasification Company (DGC) experience and data with respect to DGC participation in the enhanced oil recovery project at Weyburn, Saskatchewan. A solid line of communication has been developed with the Interstate Oil & Gas Compact Commission (IOGCC) for the mutual benefit of the PCOR Partnership and IOGCC's complementary efforts. Task 3 (Public Education and Outreach) activities have focused on developing a foundation of background materials in order to avoid a duplication of efforts and provide the best outreach and educational materials possible. Progress in Task 4 (Characterization and Evaluation) has included the development of a database format, the preliminary collection of data regarding CO{sub 2} sources and sinks, and data on the performance and costs for CO{sub 2} separation, capture, treatment, and compression for pipeline transportation. Task 5 (Modeling and Phase II Action Plans) activities have resulted in a conceptual model for screening and qualitatively assessing sequestration options. Task 5 activities have also been useful in structuring data collection and other activities in Tasks 2, 3, and 5.

Thomas A. Erickson

2004-04-01T23:59:59.000Z

200

Oxygen supply for oxyfuel CO2 capture  

Science Journals Connector (OSTI)

This paper presents the results of a study to develop Air Products’ air separation unit (ASU) offerings for oxyfuel coal CO2 capture projects. A scalable “reference plant” concept is described to match particular sizes of power generation equipment, taking into account factors such as safety, reliability, operating flexibility, efficiency, and low capital cost. We describe the selection of a process cycle to exploit the low purity requirements, as well as the options for compression machinery and drivers as the scale of the plant increases and the sizes of referenced equipment limit the possibilities. We also explore integration with other elements of the system, such as preheating condensate or heating and expanding pressurised nitrogen. In addition, we consider how the ASU affects the flexibility of the oxyfuel system and discuss how its power consumption can be reduced during periods of high power demand. Finally, the advantages and disadvantages of different execution strategies for air separation unit projects are discussed, as well as alternative commercial models for the supply of oxygen.

Paul Higginbotham; Vince White; Kevin Fogash; Galip Guvelioglu

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Numerical simulation of leakage from a geologic disposal reservoirfor CO2, with transitions between super- and sub-criticalconditions  

SciTech Connect (OSTI)

The critical point of CO2 is at temperature and pressureconditions of Tcrit = 31.04oC, Pcrit = 73.82 bar. At lower (subcritical)temperatures and/or pressures, CO2 can exist in two different phases, aliquid and a gaseous state, as well as in two-phase mixtures of thesestates. Disposal of CO2 into brine formations would be made atsupercritical pressures. However, CO2 escaping from the storage reservoirmay migrate upwards towards regions with lower temperatures andpressures, where CO2 would be in subcritical conditions. An assessment ofthe fate of leaking CO2 requires a capability to model not onlysupercritical but also subcritical CO2, as well as phase changes betweenliquid and gaseous CO2 in sub-critical conditions. We have developed amethodology for numerically simulating the behavior of water-CO2 mixturesin permeable media under conditions that may include liquid, gaseous, andsupercritical CO2. This has been applied to simulations of leakage from adeep storage reservoir in which a rising CO2 plume undergoes transitionsfrom supercritical to subcritical conditions. We find strong coolingeffects when liquid CO2 rises to elevations where it begins to boil andevolve a gaseous CO2 phase. A three-phase zone forms (aqueous - liquid -gas), which over time becomes several hundred meters thick as decreasingtemperatures permit liquid CO2 to advance to shallower elevations. Fluidmobilities are reduced in the three-phase region from phase interferenceeffects. This impedes CO2 upflow, causes the plume to spread outlaterally, and gives rise to dispersed CO2 discharge at the land surface.Our simulations suggest that temperatures along a CO2 leakage path maydecline to levels low enough so that solid water ice and CO2 hydratephases may be formed.

Pruess, Karsten

2003-04-13T23:59:59.000Z

202

Assessment of Basin-Scale Hydrologic Impacts of CO2 Sequestration, Illinois Basin1 Mark Person*1  

E-Print Network [OSTI]

: Mount Simon, Illinois Basin, CO2, earthquakes, pressure, brine transport69 #12;Page | 3 1. IntroductionPage | 1 Assessment of Basin-Scale Hydrologic Impacts of CO2 Sequestration, Illinois Basin1 2 3 4 sharp-interface models of CO2 injection were constructed for the Illinois49 Basin in which porosity

Gable, Carl W.

203

NETL: IEP - Post-Combustion CO2 Emissions Control - Novel High Capacity  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel High Capacity Oligomers for Low Cost CO2 Capture Novel High Capacity Oligomers for Low Cost CO2 Capture Project No.: DE-NT0005310 GE Global Research is using both computational and laboratory methods to identify and produce novel oligomeric solvents for the post-combustion capture of carbon dioxide (CO2). An oligomer is a polymer with relatively few structural units. Molecular and system modeling, advanced synthetic methods, and laboratory testing will be used to identify oligomeric solvents that have the potential for high CO2 capture capacity with corresponding low regeneration energy requirements. GE Global Test Equipment GE Global Test Equipment Related Papers and Publications: Aminosilicone Solvents for Low Cost CO2 Capture [PDF-2.0MB] (Sept 2010) Presentation given at the 2010 NETL CO2 Capture Technology Meeting

204

Development of Novel CO2 Adsorbents for Capture of CO2 from Flue...  

Office of Scientific and Technical Information (OSTI)

Bloomfield Avenue, University of Hartford, West Hartford, Connecticut 06117-1599 ABSTRACT Carbon Sequestration, the capturing and storing of carbon dioxide (CO 2 ) emissions...

205

NETL: Ion Advanced Solvent CO2 Capture Pilot Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ion Advanced Solvent CO2 Capture Pilot Project Ion Advanced Solvent CO2 Capture Pilot Project Project No.: DE-FE0013303 ION Engineering is conducting small pilot-scale (~ 0.7 MW) testing of an advanced CO2 capture solvent technology that has previously undergone bench-scale testing. The small pilot-scale testing will involve continuous long-term operation in order to gather the necessary data ultimately required for further scale-up. Activities will include the design and fabrication of the 0.5-0.7 MWe (equivalent) slipstream pilot plant; scale-up of solvent manufacturing; testing, data collection, and analysis of solvent performance; degradation and air emission analysis; modeling and simulation for the detailed preliminary and final techno-economic analyses; and decommissioning of pilot plant equipment upon completion of solvent testing. The advanced solvent is anticipated to have significant operating and capital cost advantages over other solvents currently in development. Advantages include significant reductions in parasitic load and liquid flow rates which directly translate to smaller more efficient CO2 capture processes. Make-up water and amine emissions rates will be examined during this project. There is the potential that additional solvent, system, and integration savings will be identified, which could result in further operating and capital cost reductions.

206

Reducing CO2 in the transport sector in Japan  

Science Journals Connector (OSTI)

In this paper, we have investigated the cost-effectiveness of alternative fuel vehicles as a measure for CO2 reduction. Computed results indicate that the installation of alternative fuel vehicles is much more expensive than fuel switching in industry or the power generation sector. However, some economic incentives will make the price go down to the level at which alternative fuel vehicles are competitive with conventional vehicles. At the same time, mass production makes their prices go down although it is rather expensive at present. Then, we developed the scenarios in which CO2 emissions could be stabilised at the level in 1990. In the higher demand case (1.2%/yr.), it is indispensable to introduce alternative fuel vehicles into the market. Our model selects electric vehicles and compressed natural gas vehicles as cost-effective options. In the scenario where carbon tax revenue is not offset by subsidy, we have to impose prohibitively high carbon tax to suppress CO2. However, CO2 emission can be suppressed by a reasonable carbon tax if the tax revenue is returned to the market to subsidise alternative fuel vehicles and their infrastructures.

Yoshikuni Yoshida; Hisashi Ishitani; Ryuji Matsuhashi; Osamu Kobayashi; Tetsuo Takeishi

2001-01-01T23:59:59.000Z

207

CO2 Heat Pump Water Heater | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Heater CO2 Heat Pump Water Heater CO2 Heat Pump Water Heater Prototype
Credit: Oak Ridge National Lab CO2 Heat Pump Water Heater Prototype Credit: Oak Ridge National Lab...

208

Poland Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Europe Europe » Poland Poland Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends Carbon dioxide emissions from Poland's use of fossil-fuels and cement production climbed at a remarkably steady rate of 3.9% per year from 1800 until 1980, when they dropped abruptly (11.7%). Fossil-fuel CO2 emissions crept back up throughout the 1980s peaking in 1987 at 127 million metric tons of carbon. Since the 1987 high, CO2 emissions have plummeted 32% to early 1970s levels while per capita emissions have dropped to late 1960s levels. Poland is the world's ninth largest producer of coal and emissions are predominantly from coal burning: 97% in 1950 and 68% in 2008. The drop following 1980 is apparent in rates of liquid fuel burning but releases from consumption of petroleum products have returned and surpassed 1980s

209

Japan Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oceania » Japan Oceania » Japan Japan Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends The history of fossil-fuel CO2 emissions from Japan is remarkable for the abrupt change that occurred in 1973. With postwar growth at 9.8% per year from 1950 to 1973, total emissions were virtually constant from 1974-1987. From 1987-96, emissions grew 25.3% reaching 329 million metric tons of carbon. Growth during this period was characterized by a return to mid-1970s consumption levels for liquid petroleum products and increased contributions from coal and natural gas use. Since 1996, Japan's fossil-fuel CO2 emissions have vacilated and now total 329 million metric tons of carbon in 2008. Based on United Nations energy trade data for 2008, Japan is the world's largest importer of coal (184 million metric tons) and

210

NETL: Carbon Storage - CO2 Utilization Focus Area  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Utilization CO2 Utilization Carbon Storage CO2 Utilization Focus Area Carbon dioxide (CO2) utilization efforts focus on pathways and novel approaches for reducing CO2 emissions by developing beneficial uses for the CO2 that will mitigate CO2 emissions in areas where geologic storage may not be an optimal solution. CO2 can be used in applications that could generate significant benefits. It is possible to develop alternatives that can use captured CO2 or convert it to useful products such chemicals, cements, or plastics. Revenue generated from the utilized CO2 could also offset a portion of the CO2 capture cost. Processes or concepts must take into account the life cycle of the process to ensure that additional CO2 is not produced beyond what is already being removed from or going into the atmosphere. Furthermore, while the utilization of CO2 has some potential to reduce greenhouse gas emissions to the atmosphere, CO2 has certain disadvantages as a chemical reactant. Carbon dioxide is rather inert and non-reactive. This inertness is the reason why CO2 has broad industrial and technical applications. Each potential use of CO2 has an energy requirement that needs to be determined; and the CO2 produced to create the energy for the specific utilization process must not exceed the CO2 utilized.

211

Geologic CO2 sequestration inhibits microbial growth | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

community and could improve overall efficiency of CO2 sequestration. The Science Carbon dioxide (CO2) sequestration in deep subsurface environments has received...

212

Cryogenic CO2 Formation on Oxidized Gold Clusters Synthesized...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cryogenic CO2 Formation on Oxidized Gold Clusters Synthesized via Reactive Layer Assisted Deposition. Cryogenic CO2 Formation on Oxidized Gold Clusters Synthesized via Reactive...

213

Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration. Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration. Abstract: A novel EOR method using...

214

Reaction of Water-Saturated Supercritical CO2 with Forsterite...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Water-Saturated Supercritical CO2 with Forsterite: Evidence for Magnesite Formation at Low Temperatures. Reaction of Water-Saturated Supercritical CO2 with Forsterite: Evidence for...

215

Telechelic Fluoroether Polyurethanes As Direct CO2 Thickeners  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

0 0 Oil & Natural Gas Technology DOE Award No.: DE-FG26-04NT-15533 Final Report Synthesis and Evaluation of CO 2 Thickeners Designed with Molecular Modeling Submitted by: Dr. Robert M. Enick, Dr. Eric J. Beckman, Dr. J. Karl Johnson Chemical and Petroleum Engineering 1249 Benedum Hall, Swanson School of Engineering, University of Pittsburgh Pittsburgh PA 15261 Prepared for: United States Department of Energy National Energy Technology Laboratory February 1, 2010 Office of Fossil Energy 1 Synthesis and Evaluation of CO 2 Thickeners Designed with Molecular Modeling Final Report Start Date: Sept. 1, 2004 End Date: August 31, 2009 Dr. Robert M. Enick Dr. Eric J. Beckman Dr. J. Karl Johnson Chemical and Petroleum Engineering University of Pittsburgh

216

Field Demonstration of CO2 Leakage Detection in Potable Aquifers with a Pulselike CO2-Release Test  

Science Journals Connector (OSTI)

Field Demonstration of CO2 Leakage Detection in Potable Aquifers with a Pulselike CO2-Release Test ... This study presents two field pulselike CO2-release tests to demonstrate CO2 leakage detection in a shallow aquifer by monitoring groundwater pH, alkalinity, and dissolved inorganic carbon (DIC) using the periodic groundwater sampling method and a fiber-optic CO2 sensor for real-time in situ monitoring of dissolved CO2 in groundwater. ...

Changbing Yang; Susan D. Hovorka; Jesus Delgado-Alonso; Patrick J. Mickler; Ramón H. Treviño; Straun Phillips

2014-11-10T23:59:59.000Z

217

Commitment accounting of CO2 emissions  

Science Journals Connector (OSTI)

The world not only continues to build new coal-fired power plants, but built more new coal plants in the past decade than in any previous decade. Worldwide, an average of 89 gigawatts per year (GW yr–1) of new coal generating capacity was added between 2010 and 2012, 23 GW yr–1 more than in the 2000–2009 time period and 56 GW yr–1 more than in the 1990–1999 time period. Natural gas plants show a similar pattern. Assuming these plants operate for 40 years, the fossil-fuel burning plants built in 2012 will emit approximately 19 billion tons of CO2 (Gt CO2) over their lifetimes, versus 14 Gt CO2 actually emitted by all operating fossil fuel power plants in 2012. We find that total committed emissions related to the power sector are growing at a rate of about 4% per year, and reached 307 (with an estimated uncertainty of 192–439) Gt CO2 in 2012. These facts are not well known in the energy policy community, where annual emissions receive far more attention than future emissions related to new capital investments. This paper demonstrates the potential for 'commitment accounting' to inform public policy by quantifying future emissions implied by current investments.

Steven J Davis; Robert H Socolow

2014-01-01T23:59:59.000Z

218

Amine Scrubbing for CO2 Capture  

Science Journals Connector (OSTI)

...distillation columns in the air separation unit...excess and leakage air along with the CO...will not provide solutions as energy-efficient...tf9363201291 2 National Air Pollution Control Administration...CO 2 Removal from Fossil-Fuel–Fired Power Plants” (IE-7365...

Gary T. Rochelle

2009-09-25T23:59:59.000Z

219

Aquifer Management for CO2 Sequestration  

E-Print Network [OSTI]

Storage of carbon dioxide is being actively considered for the reduction of green house gases. To make an impact on the environment CO2 should be put away on the scale of gigatonnes per annum. The storage capacity of deep saline aquifers...

Anchliya, Abhishek

2010-07-14T23:59:59.000Z

220

Efficient parallel simulation of CO2 geologic sequestration insaline aquifers  

SciTech Connect (OSTI)

An efficient parallel simulator for large-scale, long-termCO2 geologic sequestration in saline aquifers has been developed. Theparallel simulator is a three-dimensional, fully implicit model thatsolves large, sparse linear systems arising from discretization of thepartial differential equations for mass and energy balance in porous andfractured media. The simulator is based on the ECO2N module of the TOUGH2code and inherits all the process capabilities of the single-CPU TOUGH2code, including a comprehensive description of the thermodynamics andthermophysical properties of H2O-NaCl- CO2 mixtures, modeling singleand/or two-phase isothermal or non-isothermal flow processes, two-phasemixtures, fluid phases appearing or disappearing, as well as saltprecipitation or dissolution. The new parallel simulator uses MPI forparallel implementation, the METIS software package for simulation domainpartitioning, and the iterative parallel linear solver package Aztec forsolving linear equations by multiple processors. In addition, theparallel simulator has been implemented with an efficient communicationscheme. Test examples show that a linear or super-linear speedup can beobtained on Linux clusters as well as on supercomputers. Because of thesignificant improvement in both simulation time and memory requirement,the new simulator provides a powerful tool for tackling larger scale andmore complex problems than can be solved by single-CPU codes. Ahigh-resolution simulation example is presented that models buoyantconvection, induced by a small increase in brine density caused bydissolution of CO2.

Zhang, Keni; Doughty, Christine; Wu, Yu-Shu; Pruess, Karsten

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

CO2 adsorption capacity of argonne premium coals  

Science Journals Connector (OSTI)

Adsorption and desorption isotherms of CO2 on dried Argonne Premium coal samples were investigated. A small hysteresis was detected between the adsorption and desorption isotherms. The hysteresis was small or negligible for high rank coals but discernable for low rank coals. The isotherms were found to be rectilinear and to fit the conventional adsorption equations poorly. The rectilinear shape of the adsorption isotherms was related to the solubility of the CO2 in the coal and to coal swelling. Using an adsorption model that accounted for volumetric effects provided good agreement between the surface areas calculated from the high-pressure isotherms and the literature values obtained under traditional low-pressure conditions. Ignoring the volumetric effects resulted in estimated surface areas that were 40% larger for the higher-ranked coals and 60–100% larger for the lower-ranked coals. The heat of adsorption, after correcting for volumetric effects, was fairly constant (26±1 kJ/mol) regardless of rank. The adsorption capacity, average pore size, and volume effect for each of the Argonne coals were also estimated employing the same model. The model equation explicitly accounts for volumetric effects, attributable to the solubility of CO2 in the organic matrix and the coal swelling, and estimates the actual adsorbed amount.

Ekrem Ozdemir; Badie I Morsi; Karl Schroeder

2004-01-01T23:59:59.000Z

222

Synthesis, characterization and performance of single-component CO2-binding organic liquids (CO2BOL) for post combustion CO2 capture  

SciTech Connect (OSTI)

Carbon dioxide (CO2) emission to the atmosphere will increase significantly with the shift to coal powered plants for energy generation. This increase in CO2 emission will contribute to climate change. There is need to capture and sequester large amounts of CO2 emitted from these coal power plants in order to mitigate the environmental effects. Here we report the synthesis, characterization and system performance of multiple third generation CO2 binding organic liquids (CO2BOLs) as a solvent system for post combustion gas capture. Alkanolguanidines and alkanolamidines are single component CO2BOLs that reversibly bind CO2 chemically as liquid zwitterionic amidinium / guanidinium alkylcarbonates. Three different alkanolguanidines and alkanolamidines were synthesized and studied for CO2 capacity and binding energetics. Solvent performance of these three CO2BOLs was evaluated by batch-wise CO2 uptake and release over multiple cycles. Synthesis of CO2BOLs, characterization, CO2 uptake, selectivity towards CO2 as well as solvent tolerance to water will be discussed.

Koech, Phillip K.; Heldebrant, David J.; Rainbolt, James E.; Zheng, Feng; Smurthwaite, Tricia D.

2010-03-31T23:59:59.000Z

223

Simulation of Coupled Processes of Flow, Transport, and Storage of CO2 in Saline Aquifers  

SciTech Connect (OSTI)

This report is the final scientific one for the award DE- FE0000988 entitled “Simulation of Coupled Processes of Flow, Transport, and Storage of CO2 in Saline Aquifers.” The work has been divided into six tasks. In task, “Development of a Three-Phase Non-Isothermal CO2 Flow Module,” we developed a fluid property module for brine-CO2 mixtures designed to handle all possible phase combinations of aqueous phase, sub-critical liquid and gaseous CO2, supercritical CO2, and solid salt. The thermodynamic and thermophysical properties of brine-CO2 mixtures (density, viscosity, and specific enthalpy of fluid phases; partitioning of mass components among the different phases) use the same correlations as an earlier fluid property module that does not distinguish between gaseous and liquid CO2-rich phases. We verified the fluid property module using two leakage scenarios, one that involves CO2 migration up a blind fault and subsequent accumulation in a secondary “parasitic” reservoir at shallower depth, and another investigating leakage of CO2 from a deep storage reservoir along a vertical fault zone. In task, “Development of a Rock Mechanical Module,” we developed a massively parallel reservoir simulator for modeling THM processes in porous media brine aquifers. We derived, from the fundamental equations describing deformation of porous elastic media, a momentum conservation equation relating mean stress, pressure, and temperature, and incorporated it alongside the mass and energy conservation equations from the TOUGH2 formulation, the starting point for the simulator. In addition, rock properties, namely permeability and porosity, are functions of effective stress and other variables that are obtained from the literature. We verified the simulator formulation and numerical implementation using analytical solutions and example problems from the literature. For the former, we matched a one-dimensional consolidation problem and a two-dimensional simulation of the Mandel-Cryer effect. For the latter, we obtained a good match of temperature and gas saturation profiles, and surface uplift, after injection of hot fluid into a model of a caldera structure. In task, “Incorporation of Geochemical Reactions of Selected Important Species,” we developed a novel mathematical model of THMC processes in porous and fractured saline aquifers, simulating geo-chemical reactions associated with CO2 sequestration in saline aquifers. Two computational frameworks, sequentially coupled and fully coupled, were used to simulate the reactions and transport. We verified capabilities of the THMC model to treat complex THMC processes during CO2 sequestration by analytical solutions and we constructed reactive transport models to analyze the THMC process quantitatively. Three of these are 1D reactive transport under chemical equilibrium, a batch reaction model with equilibrium chemical reactions, and a THMC model with CO2 dissolution. In task “Study of Instability in CO2 Dissolution-Diffusion-Convection Processes,” We reviewed literature related to the study of density driven convective flows and on the instability of CO2 dissolution-diffusion-convection processes. We ran simulations that model the density-driven flow instability that would occur during CO2 sequestration. CO2 diffused through the top of the system and dissolved in the aqueous phase there, increasing its density. Density fingers formed along the top boundary, and coalesced into a few prominent ones, causing convective flow that forced the fluid to the system bottom. These simulations were in two and three dimensions. We ran additional simulations of convective mixing with density contrast caused by variable dissolved CO2 concentration in saline water, modeled after laboratory experiments in which supercritical CO2 was circulated in the headspace above a brine saturated packed sand in a pressure vessel. As CO2 dissolved into the upper part of the saturated sand, liquid phase density increases causing instability and setting off convective mixing. We obtained good agreement

Wu, Yu-Shu; Chen, Zizhong; Kazemi, Hossein; Yin, Xiaolong; Pruess, Karsten; Oldenburg, Curt; Winterfeld, Philip; Zhang, Ronglei

2014-09-30T23:59:59.000Z

224

Cost Assessment of CO2 Sequestration by Mineral Carbonation  

E-Print Network [OSTI]

Cost Assessment of CO2 Sequestration by Mineral Carbonation Frank E. Yeboah Tuncel M. Yegulalp Harmohindar Singh Research Associate Professor Professor Center for Energy Research... them carbon dioxide (CO 2 ). This paper assesses the cost of sequestering CO 2 produced by a ZEC power plant using solid sequestration process. INTRODUCTION CO 2 is produced when electrical energy is generated using conventional fossil...

Yeboah, F. E.; Yegulalp, T. M.; Singh, H.

2006-01-01T23:59:59.000Z

225

A 40-million-year history of atmospheric CO2  

Science Journals Connector (OSTI)

...40-million-year history of atmospheric CO2 Yi Ge Zhang 1 Mark Pagani 1 Zhonghui Liu...Pleistocene epochs). The present long-term CO2 record is a composite of data from multiple...growth conditions that potentially bias CO2 results. In this study, we present a pCO2...

2013-01-01T23:59:59.000Z

226

A Vehicular Wireless Sensor Network for CO2 Monitoring  

E-Print Network [OSTI]

the concentration of carbon dioxide (CO2) gas in areas of interest. The reported data are sent to a server, which the concentration of carbon dioxide (CO2) gas in areas of interest. CO2 gas is a critical index of air qualityA Vehicular Wireless Sensor Network for CO2 Monitoring Shu-Chiung Hu1, You-Chiun Wang1, Chiuan

Tseng, Yu-Chee

227

CO2 http://andrew.ucsd.edu/co2qc/ University of California, San Diego  

E-Print Network [OSTI]

by sublimation and the CO2 is transferred into an electronic constant-volume manometer [ECM]. There its pressure of total alkalinity. Marine Chemistry 80, 185­197). Nutrients Nutrient levels were determined using

228

State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline  

Broader source: Energy.gov (indexed) [DOE]

State Regulatory Framework Will Most Likely Result in Robust CO2 State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline System, New Study Says State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline System, New Study Says February 1, 2011 - 12:00pm Addthis Washington, DC - A private sector model with a state rather than Federal-based regulatory framework is the approach that will "most likely result in a robust CO2 [carbon dioxide] pipeline system" in the United States, according to a new report developed with funding from the U.S. Department of Energy's National Energy Technology Laboratory (DOE/NETL). However, a Federal role that "includes incentives to encourage the private construction of CO2 pipelines" would be an important factor in moving the concept forward, the study says.

229

NETL: IEP – Oxy-Combustion CO2 Emissions Control - Oxygen-Based PC Boiler  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

– Oxy-Combustion CO2 Emissions Control – Oxy-Combustion CO2 Emissions Control Oxygen-Based PC Boiler Project No.: FC26-04NT42207 & FC26-03NT41736 Spatial Comparison of an Air-Fired Furnace versus an Oxygen-Fired Furnace. Spatial Comparison of an Air-Fired Furnace versus an Oxygen-Fired Furnace. Foster Wheeler North America Corporation will conduct to two projects to improve carbon dioxide (CO2) capture technology by developing a conceptual pulverized coal-fired boiler system design using oxygen as the combustion medium. Using oxygen instead of air produces a flue gas with a high CO2 concentration, which will facilitate CO2 capture for subsequent sequestration. The first project will develop modeling simulations that will lead to a conceptual design that addresses costs, performance, and emissions, and

230

Novel Solvent System for CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solvent System for CO Solvent System for CO 2 Capture Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental

231

CO2 Laser CVD of Disilane  

Science Journals Connector (OSTI)

Amorphous silicon films were deposited by a CO2 laser CVD (chemical vapor deposition) method using disilane gas. With this gas, the films were deposited reasonably fast at relatively low substrate temperatures of 350°C or above. Unlike monosilane, photo-induced effects in the gas phase following light absorption were negligible in deposition processes, and only the pyrolytic process taking place at the laser-heated substrate was important. Some of the physical properties of deposited films were described.

Takehiko Iwanaga; Mitsugu Hanabusa

1984-01-01T23:59:59.000Z

232

Continuous CO2 extractor and methods  

SciTech Connect (OSTI)

The purpose of this CRADA was to assist in technology transfer from Russia to the US and assist in development of the technology improvements and applications for use in the U.S. and worldwide. Over the period of this work, ORNL has facilitated design, development and demonstration of a low-pressure liquid extractor and development of initial design for high-pressure supercritical CO2 fluid extractor.

None listed

2010-06-15T23:59:59.000Z

233

Laboratory and Field Experimental Studies of CO2 as Heat Transmission Fluid in Enhanced Geothermal Systems (EGS)  

Broader source: Energy.gov [DOE]

Project objectives: obtain basic information on the performance of CO2-based EGS; and enhance and calibrate modeling capabilities for such systems.

234

An estimate of monthly global emissions of anthropogenic CO2: Impact on the seasonal cycle of atmospheric CO2  

E-Print Network [OSTI]

An estimate of monthly global emissions of anthropogenic CO2: Impact on the seasonal cycle of anthropogenic CO2 are presented. Approximating the seasonal CO2 emission cycle using a 2-harmonic Fourier series with regions of strong anthropogenic CO2 emissions. Citation: Erickson, D. J., III, R. T. Mills, J. Gregg, T. J

Hoffman, Forrest M.

235

The response of soil CO2 ux to changes in atmospheric CO2, nitrogen supply and plant diversity  

E-Print Network [OSTI]

three major anthropogenic global changes: atmos- pheric carbon dioxide (CO2) concentration, nitrogen (N atmospheric carbon dioxide (CO2) concentra- tions, increasing rates of nitrogen (N) deposition, and decliningThe response of soil CO2 ¯ux to changes in atmospheric CO2, nitrogen supply and plant diversity J O

Minnesota, University of

236

Study of CO2 Mobility Control Using Cross-linked Gel Conformance Control and CO2 Viscosifiers in Heterogeneous Media  

E-Print Network [OSTI]

result, early gas breakthrough has been a very common problem in CO2-related projects, reducing the overall sweep efficiency of CO2 flooding. This research aims at improving the CO2 flood efficiency using cross-linked gel conformance control and CO2...

Cai, Shuzong

2011-10-21T23:59:59.000Z

237

Rigorous Screening Technology for Identifying Suitable CO2 Storage Sites II  

SciTech Connect (OSTI)

This report serves as the final technical report and users manual for the 'Rigorous Screening Technology for Identifying Suitable CO2 Storage Sites II SBIR project. Advanced Resources International has developed a screening tool by which users can technically screen, assess the storage capacity and quantify the costs of CO2 storage in four types of CO2 storage reservoirs. These include CO2-enhanced oil recovery reservoirs, depleted oil and gas fields (non-enhanced oil recovery candidates), deep coal seems that are amenable to CO2-enhanced methane recovery, and saline reservoirs. The screening function assessed whether the reservoir could likely serve as a safe, long-term CO2 storage reservoir. The storage capacity assessment uses rigorous reservoir simulation models to determine the timing, ultimate storage capacity, and potential for enhanced hydrocarbon recovery. Finally, the economic assessment function determines both the field-level and pipeline (transportation) costs for CO2 sequestration in a given reservoir. The screening tool has been peer reviewed at an Electrical Power Research Institute (EPRI) technical meeting in March 2009. A number of useful observations and recommendations emerged from the Workshop on the costs of CO2 transport and storage that could be readily incorporated into a commercial version of the Screening Tool in a Phase III SBIR.

George J. Koperna Jr.; Vello A. Kuuskraa; David E. Riestenberg; Aiysha Sultana; Tyler Van Leeuwen

2009-06-01T23:59:59.000Z

238

Regenerable MgO-based sorbent for high temperature CO2 removal from syngas: 3. CO2 capture and sorbent enhanced water gas shift reaction  

Science Journals Connector (OSTI)

Abstract Regenerable MgO-based sorbent, which was prepared and evaluated in the thermogravimetric analyzer (TGA) in part 1, was also evaluated in high-pressure packed-bed unit in CO2/N2/H2O mixture and simulated pre-combustion syngas environment. In CO2/N2/H2O environment, the CO2 absorption capacity of the sorbent increases with increasing temperatures from 6.7% at 350 °C to 9.5% 450 °C. The sorbent is capable of achieving over 95% CO2 capture and 40% conversion in the water gas shift (WGS) reaction, which should be attributed to positive effect of WGS reaction in producing CO2 during the process. The sorbent reactivity and absorption capacity toward CO2, as well as its WGS catalytic activity decreases with increasing temperature. The maximum pre-breakthrough WGS conversion occurs at 350 °C, which diminishes as the sorbent is carbonated. The variable diffusivity shrinking core reaction model coupled with the two-fluid computational fluid dynamics (CFD) model was shown to accurately predict the break-through gas compositions at different operating conditions.

Emadoddin Abbasi; Armin Hassanzadeh; Shahin Zarghami; Hamid Arastoopour; Javad Abbasian

2014-01-01T23:59:59.000Z

239

Metamagnetism in DyBaCo2O5þx ... (Journal of Solid State Chemistry...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

above T IM : A previous model of the RBaCo 2 O 5:5 phase is extended to account for the Ising spin configuration below T C ; the magnetic order in the presence of higher-spin...

240

Hydrogen production through CO2 sorption-enhanced methane steam reforming: Comparison between different adsorbents  

Science Journals Connector (OSTI)

A two-dimensional transient model has been developed to describe the catalytic methane reforming (MSR) coupled with simultaneous CO2...removal by different absorbents under non-isothermal, non-isobaric and non-ad...

YuMing Chen; YongChun Zhao; JunYing Zhang…

2011-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

CO2 Abatement in the UK Power Sector: Evidence from the EU ETS Trial Period  

E-Print Network [OSTI]

This paper provides an empirical assessment of CO2 emissions abatement in the UK power sector during the trial period of the EU ETS. Using an econometrically estimated model of fuel switching, it separates the impacts of ...

Ellerman, A. Denny

2008-01-01T23:59:59.000Z

242

Implications of CO2 emissions trading for short-run electricity market outcomes in northwest Europe  

Science Journals Connector (OSTI)

We examine the short-run implications of CO2 trading for power production, prices, emissions, and generator profits in northwest Europe in 2005. Simulation results from a transmission-constrained oligopoly model ...

Yihsu Chen; Jos Sijm; Benjamin F. Hobbs; Wietze Lise

2008-12-01T23:59:59.000Z

243

Optimal synthesis of a pressure swing adsorption process for CO2 capture  

SciTech Connect (OSTI)

The emission of carbon dioxide from cement industry and power plants that burn fossil fuels is the major cause for the accumulation of CO2 in the atmosphere, which causes long-range environmental problems. One option to mitigate the emission of CO2 is to capture it from the emission sources and store it to the ocean or depleted oil field or use it for enhanced oil recovery. CO2 recovery has been achieved by gas absorption employing solutions of carbonates and alkanolamines. However, this process is energy-intensive for the regeneration of solvent and also faces problems due to corrosion. Recently, the pressure swing adsorption (PSA) process has been considered as an alternative to the absorption process. PSA processes have been widely applied for the removal of CO2 from various feed mixtures, such as CO2 in the steam reformer off gas, landfill gas and natural gas. In all these commercial PSA cycles, the weakly adsorbed component in the mixture is the desired product and enriching the strongly adsorbed CO2 is not a concern. On the other hand, for the capture of CO2 for sequestration, it is necessary to concentrate the CO2 to a high purity to reduce the compression and transportation cost. Thus, it is necessary to develop a PSA cycle by which a high-purity product for the strongly adsorbed component with a high recovery is obtained. A multitude of PSA cycles and adsorbents have been developed for producing highly pure heavy component (CO2) from feedstock with low CO2 concentration. Kikkinides et al. suggested a 4-bed 4-step process with activated carbon as the sorbent and could recover 68% of CO2 at 99.997% purity. Chue et al. compared activated carbon and zeolite 13X on a 3-bed 7-step process and concluded that the latter is better than the former for CO2 recovery. However, the CO2 recovery was low in their process due to the lack of a countercurrent step in the chosen cycle. Choi et al. reported more than 70% CO2 recovery at more than 90% purity for a modified 3-bed 7-step cycle. However, they solved a very small two variable optimization problem, thus being a specialized case. Zhang et al. have given justifications for using a specific cyclic component step in the adsorption cycle in the context of CO2 capture by using a simplistic mathematical model for the PSA process. Reynolds et al. have suggested a variety of stripping PSA cycles for CO2 recovery at high temperature using a hydrotalcite-like adsorbent. In this study, a two-bed superstructure of the PSA process has been developed to optimally synthesize an appropriate cycle for CO2 capture. The superstructure considers all the possible operating steps in a PSA cycle with two beds. An optimal control problem with a PDE-based model for PSA system has been formulated in which different steps within a cycle are realized with the help of control variables changing with time. The optimization problem has been solved for three different cases of maximizing CO2 recovery (for a given purity), maximizing feed throughput and minimizing specific power (for a given level of CO2 purity and recovery). Current results indicate the superstructure-based approach as a promising technique for deriving optimal PSA cycles. Different cases with different number of control variables indicate convergence to a particular kind of PSA cycle with over 99% purity and recovery of CO2. The results obtained from optimization problem will also be compared with the optimal PSA cycle simulated more accurately in a dynamic simulation environment.

Agarwal, A.; Biegler, L.; Zitney, S.

2008-01-01T23:59:59.000Z

244

On Leakage from Geologic Storage Reservoirs of CO2  

SciTech Connect (OSTI)

Large amounts of CO2 would need to be injected underground to achieve a significant reduction of atmospheric emissions. The large areal extent expected for CO2 plumes makes it likely that caprock imperfections will be encountered, such as fault zones or fractures, which may allow some CO2 to escape from the primary storage reservoir. Leakage of CO2 could also occur along wellbores. Concerns with escape of CO2 from a primary geologic storage reservoir include (1) acidification of groundwater resources, (2) asphyxiation hazard when leaking CO2 is discharged at the land surface, (3) increase in atmospheric concentrations of CO2, and (4) damage from a high-energy, eruptive discharge (if such discharge is physically possible). In order to gain public acceptance for geologic storage as a viable technology for reducing atmospheric emissions of CO2, it is necessary to address these issues and demonstrate that CO2 can be injected and stored safely in geologic formations.

Pruess, Karsten

2006-02-14T23:59:59.000Z

245

CircleKs DEFINITIVE vim Reference Version: 1.0  

E-Print Network [OSTI]

CircleKs DEFINITIVE vim Reference Version: 1.0 Major rules: 1. Vim has 2 modes: insert and command inserting text s! Cut character under cursor and start inserting text After youre in insert mode, vim

246

NETL: IEP - Post-Combustion CO2 Emissions Control - Evaluation of Solid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solid Sorbents as a Retrofit Technology for CO2 Capture Solid Sorbents as a Retrofit Technology for CO2 Capture Project No.: DE-FE0004343 ADA-ES Inc. is refining the conceptual design of a commercial solid sorbent-based, post-combustion CO2 capture technology through slipstream pilot testing and process modeling. A pilot unit (~1 MW) will be designed and constructed to demonstrate solid sorbent-based CO2 capture on actual flue gas. The pilot tests and process modeling will provide the information necessary to complete a techno-economic analysis of the technology. The design will be based on a 1 kW-scale transport reactor system built and demonstrated under an existing DOE/NETL CO2 capture project (Figure). There are several advantages solids offer over aqueous MEA. For example, solids have a working capacity over two times that of MEA, by weight, leading to lower regeneration energy attributable to less material to heat. The increased capacity, in conjunction with the lower heat capacity, results in a theoretical regeneration energy approximately half that of MEA, per kg of CO2. This indicates that solids can dramatically reduce the energy requirements for CO2 capture compared to aqueous systems. In addition, circulating less material in a solid-based system compared to aqueous MEA will likely lead to lower pressure drop, depending on the system configuration. Also, solids have the potential to be less corrosive than the solution used in aqueous MEA systems.

247

Interactions between measures for the support of electricity from renewable energy sources and CO2 mitigation  

Science Journals Connector (OSTI)

As Europe wants to move towards a secure, sustainable and competitive energy market, it has taken action, amongst other, to support electricity from renewable energy sources (RES-E) and to mitigate CO2 emissions. This paper first qualitatively discusses price- and quantity-based measures for RES-E deployment as well as CO2 mitigation. Next, a simulation model is developed to quantitatively discuss the effects of a tradable green certificate system, a premium mechanism, a tradable CO2 allowance system and a CO2 tax on both RES-E deployment and CO2 mitigation. A three-regional model implementation representing the Benelux, France and Germany is used. In a first step of simulations, all measures are implemented separately. In a second step, combinations of both RES-E supporting and CO2 mitigating measures are simulated and discussed. Significant indirect effects are demonstrated, especially for RES-E supporting measures on the reduction of CO2 emissions. Interactions between different measures show that the price level of quantity-based measures can be strongly influenced.

Cedric De Jonghe; Erik Delarue; Ronnie Belmans; William D’haeseleer

2009-01-01T23:59:59.000Z

248

PLAINS CO2 REDUCTION (PCOR) PARTNERSHIP  

SciTech Connect (OSTI)

During the period of October 1, 2003, through September 30, 2005, the Plains CO2 Reduction (PCOR) Partnership, identified geologic and terrestrial candidates for near-term practical and environmentally sound carbon dioxide (CO2) sequestration demonstrations in the heartland of North America. The PCOR Partnership region covered nine states and three Canadian provinces. The validation test candidates were further vetted to ensure that they represented projects with (1) commercial potential and (2) a mix that would support future projects both dependent and independent of CO2 monetization. This report uses the findings contained in the PCOR Partnership's two dozen topical reports and half-dozen fact sheets as well as the capabilities of its geographic information system-based Decision Support System to provide a concise picture of the sequestration potential for both terrestrial and geologic sequestration in the PCOR Partnership region based on assessments of sources, sinks, regulations, deployment issues, transportation, and capture and separation. The report also includes concise action plans for deployment and public education and outreach as well as a brief overview of the structure, development, and capabilities of the PCOR Partnership. The PCOR Partnership is one of seven regional partnerships under Phase I of the U.S. Department of Energy National Energy Technology Laboratory's Regional Carbon Sequestration Partnership program. The PCOR Partnership, comprising 49 public and private sector members, is led by the Energy & Environmental Research Center at the University of North Dakota. The international PCOR Partnership region includes the Canadian provinces of Alberta, Saskatchewan, and Manitoba and the states of Montana (part), Wyoming (part), North Dakota, South Dakota, Nebraska, Missouri, Iowa, Minnesota, and Wisconsin.

Edward N. Steadman; Daniel J. Daly; Lynette L. de Silva; John A. Harju; Melanie D. Jensen; Erin M. O'Leary; Wesley D. Peck; Steven A. Smith; James A. Sorensen

2006-01-01T23:59:59.000Z

249

NETL: IEP – Post-Combustion CO2 Emissions Control - Ionic Liquids  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ionic Liquids Ionic Liquids Project No.: FC26-07NT43091 Model of CO2 absorption by an ionic liquid. Model of CO2 absorption by an IL. The model shows that the anions are controlling absorption in ILs. The green units represent anions and the grey units represent cations. The University of Notre Dame is conducting the Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO2 Capture project (FC26-07NT43091), that builds on the work of its earlier project (FG26-04NT42122), to provide a comprehensive evaluation of the feasibility of using a novel class of compounds - ionic liquids (ILs) - for the capture of carbon dioxide (CO2) from the flue gas of coal-fired power plants. Initial efforts focused on "proof-of-concept" exploration, followed by a laboratory-/bench-scale effort. ILs include a broad category

250

Analysis of Mineral Trapping for CO2 Disposal in Deep Aquifers  

Office of Scientific and Technical Information (OSTI)

Reactive Geochemical Transport Simulation to Study Mineral Trapping Reactive Geochemical Transport Simulation to Study Mineral Trapping for CO 2 Disposal in Deep Saline Arenaceous Aquifers Tianfu Xu, John A. Apps, and Karsten Pruess Earth Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA Abstract. A reactive fluid flow and geochemical transport numerical model for evaluating long-term CO 2 disposal in deep aquifers has been developed. Using this model, we performed a number of sensitivity simulations under CO 2 injection conditions for a commonly encountered Gulf Coast sediment to analyze the impact of CO 2 immobilization through carbonate precipitation. Geochemical models are needed because alteration of the predominant host rock aluminosilicate minerals is very slow and is not

251

NETL: IEP - Post-Combustion CO2 Emissions Control - Post-Combustion CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Post-Combustion CO2 Capture for Existing PC Boilers by Self-concentrating Amine Absorbent Post-Combustion CO2 Capture for Existing PC Boilers by Self-concentrating Amine Absorbent Project No.: DE-FE0004274 3H Company will evaluate the feasibility of its "Self-Concentrating Absorbent CO2 Capture Process." The process is based on amines in a non-aqueous solvent which, upon reaction with CO2, separate into two distinct phases: a CO2-rich liquid phase and a dilute lean phase. The proposed process offers several potential advantages. Preliminary experimental data show that the process has the potential of reducing the total regeneration energy by as much as 70 percent. The solvent has high working capacity, thus required solvent volume would be lower than that required in a currently available amine system. This results in lower pumping requirements, lower auxiliary power demands, and reduced equipment size. In addition, since the solvent is non-aqueous, corrosion issues would be reduced. During the three-year project, an engineering design supported by laboratory data and economic justification will be developed to construct and operate a slipstream demonstration facility at an E-ON power plant in the United States as a next stage of commercialization development.

252

DOE - Office of Legacy Management -- Spencer Chemical Co - KS 0-01  

Office of Legacy Management (LM)

KS 0-01 KS 0-01 FUSRAP Considered Sites Site: SPENCER CHEMICAL CO. (KS.0-01 ) Eliminated from further consideration under FUSRAP - an AEC licensed operation Designated Name: Not Designated Alternate Name: Jayhawk Works KS.0-01-1 Location: Pittsburg , Kansas KS.0-01-1 Evaluation Year: 1985 KS.0-01-2 Site Operations: Processed enriched uranium (UF-6) and scrap to produce primarily uranium dioxide (UO-2) under AEC licenses. KS.0-01-3 KS.0-01-4 Site Disposition: Eliminated - No Authority - AEC licensed KS.0-01-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Normal and Enriched Uranium; Thorium KS.0-01-6 Radiological Survey(s): Yes KS.0-01-5 Site Status: Eliminated from further consideration under FUSRAP - an AEC licensed operation

253

Mitigating CO2 emissions by adjusting the power generation mix in Taiwan  

Science Journals Connector (OSTI)

In this paper, we employ a multi-objective programming model to estimate the power generation mix trade-off between generation costs and CO2 emissions in Taiwan. Eight policy scenarios are simulated and compared to the reference and base cases. The empirical results show that, for the electricity sector, CO2 emissions in 2010 could be set at 120% of the 1990 level, by way of promoting cogeneration and gas-fired generation capacity. The estimated per unit mitigation cost of CO2 emission would be US$358/ton. The policy implications are discussed and limitation of this study is also presented.

George J.Y. Hsu; Tser-Yieth Chen

2005-01-01T23:59:59.000Z

254

Natural CO2 Reservoirs on the Colorado Plateau Â… Candidates for CO2 Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 Reservoirs on the Colorado Plateau and Southern Rocky Mountains: Candidates for CO 2 Sequestration. R. Allis (nrugs.rallis@state.ut.us; 801-537-3301) T. Chidsey (nrugs.tchidsey@state.ut.us; 801-537-3364) W. Gwynn (nrugs.wgwynn@state.ut.us; 801-537-3366) C. Morgan (nrugs.cmorgan@state.ut.us; 801-537-3370) Utah Geological Survey P.O. Box 146100 Salt Lake City, UT 84114 S. White (s.white@irl.cri.nz; 64-4-569-0000) Industrial Research Ltd. P.O. Box 31-310 Lower Hutt, New Zealand M. Adams (madams@egi.utah.edu; 801-585-7784) J. Moore (jmoore@egi.utah.edu; 801-585-6931) Energy and Geoscience Institute, 427 Wakara Way, Suite 300 Salt Lake City, UT84107 Abstract Numerous natural accumulations of CO 2 -dominant gases have been discovered as a result of

255

NETL: IEP – Post-Combustion CO2 Emissions Control - CO2 Capture from Flue  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from Flue Gas by Phase Transitional Absorption from Flue Gas by Phase Transitional Absorption Project No.: FG26-05NT42488 Basic Illustration of the Phase Transitional Absorption Process. Basic Illustration of the Phase Transitional Absorption Process. Hampton University researched a novel carbon dioxide (CO2) absorption concept, phase transitional absorption, that utilizes a two-part proprietary absorbent consisting of an activated agent dissolved in a solvent. Phase separation of the activated agent from the chemical solvent occurs during CO2 absorption and physical separation of the two phases exiting the absorber reduces the volume of process liquid requiring thermal regeneration. This unique aspect of phase transitional absorption also decreases the amount of energy (i.e., steam) required to liberate the CO2. If the proper liquid

256

Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring 2010 Title Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring 2010 Publication Type Journal Article Year of Publication 2012 Authors Newman, Sally, Seongeun Jeong, Marc L. Fischer, Xiaomei Xu, Christine L. Haman, Barry Lefer, Sergio Alvarez, Bernhard Rappenglueck, Eric A. Kort, Arlyn E. Andrews, Jeffrey Peischl, Kevin R. Gurney, Charles E. Miller, and Yuk L. Yung Journal Atmospheric Chemistry and Physics Volume 13 Pagination 4359-4372 Abstract Attributing observed CO2 variations to human or natural cause is critical to deducing and tracking emissions from observations. We have used in situ CO2, CO, and planetary boundary layer height (PBLH) measurements recorded during the CalNex-LA (CARB et al., 2008) ground campaign of 15 May-15 June 2010, in Pasadena, CA, to deduce the diurnally varying anthropogenic component of observed CO2 in the megacity of Los Angeles (LA). This affordable and simple technique, validated by carbon isotope observations and WRF-STILT (Weather Research and Forecasting model - Stochastic Time-Inverted Lagrangian Transport model) predictions, is shown to robustly attribute observed CO2 variation to anthropogenic or biogenic origin over the entire diurnal cycle. During CalNex-LA, local fossil fuel combustion contributed up to ~50% of the observed CO2 enhancement overnight, and ~100% of the enhancement near midday. This suggests that sufficiently accurate total column CO2 observations recorded near midday, such as those from the GOSAT or OCO-2 satellites, can potentially be used to track anthropogenic emissions from the LA megacity.

257

Enhancement of Local Air Pollution by Urban CO2 Domes  

Science Journals Connector (OSTI)

For this study, the nested global-through-urban 3-D model, GATOR-GCMOM (13-17) was used to examine the effects of locally emitted CO2 on local climate and air pollution. ... Jacobson, M. Z. GATOR-GCMM: 2. A study of day- and nighttime ozone layers aloft, ozone in national parks, and weather during the SARMAP Field Campaign J. Geophys. ... GATOR-GCMM 2. A study of daytime and nighttime ozone layers aloft, ozone in national parks, and weather during the SARMAP field campaign ...

Mark Z. Jacobson

2010-03-10T23:59:59.000Z

258

Plains CO2 Reduction Partnership PCOR | Open Energy Information  

Open Energy Info (EERE)

CO2 Reduction Partnership PCOR CO2 Reduction Partnership PCOR Jump to: navigation, search Name Plains CO2 Reduction Partnership (PCOR) Place Grand Forks, North Dakota Zip 58202-9018 Product North Dakota-based consortium researching CO2 storage options. PCOR is busy with the ECBM in the Unminable Lignite Research Project. References Plains CO2 Reduction Partnership (PCOR)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Plains CO2 Reduction Partnership (PCOR) is a company located in Grand Forks, North Dakota . References ↑ "Plains CO2 Reduction Partnership (PCOR)" Retrieved from "http://en.openei.org/w/index.php?title=Plains_CO2_Reduction_Partnership_PCOR&oldid=349772"

259

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate Fourth Quarterly Report 2005 Quarterly Progress. #12;3 Abstract The objective of this work is to improve the process for CO2 capture by alkanolamine

Rochelle, Gary T.

260

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate Third Quarterly Report 2005 Quarterly Progress. #12;3 Abstract The objective of this work is to improve the process for CO2 capture by alkanolamine

Rochelle, Gary T.

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
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261

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate First Quarterly Report 2006 Quarterly Progress the process for CO2 capture by alkanolamine absorption/stripping by developing an alternative solvent, aqueous

Rochelle, Gary T.

262

Formation Damage due to CO2 Sequestration in Saline Aquifers  

E-Print Network [OSTI]

Carbon dioxide (CO2) sequestration is defined as the removal of gas that would be emitted into the atmosphere and its subsequent storage in a safe, sound place. CO2 sequestration in underground formations is currently being considered to reduce...

Mohamed, Ibrahim Mohamed 1984-

2012-10-25T23:59:59.000Z

263

CO2-laser gas discharges in narrow gaps  

Science Journals Connector (OSTI)

We have studied RF discharges as excitation mechanisms for distributed feedback (DFB) CO2 lasers. For CO2 laser plasmas the reduced electric fieldE/N has to be in a well-defined range. The reduced electric fields

W. Leuthard; F. K. Kneubühl; H. J. Schötzau

1989-01-01T23:59:59.000Z

264

Summary Report on CO2 Geologic Sequestration & Water Resources Workshop  

E-Print Network [OSTI]

2 exposure in both CO 2 -EOR and natural CO 2 reservoirs (as enhanced oil recovery (EOR) and enhanced gas recovery (2 field injections for CCS-EOR, where the water quality of

Varadharajan, C.

2013-01-01T23:59:59.000Z

265

Chemical Impact of Elevated CO2on Geothermal Energy Production...  

Broader source: Energy.gov (indexed) [DOE]

Chemical Impact of Elevated CO2on Geothermal Energy Production Chemical Impact of Elevated CO2on Geothermal Energy Production This is a two phase project to assess the geochemical...

266

Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission...  

Broader source: Energy.gov (indexed) [DOE]

study heat extraction from hot porous systems by injection of cold CO 2 . * Reactive chemistry experiments for CO 2 -brine-rock are being assembled (INL). 6 | US DOE Geothermal...

267

CO2 Capture Membrane Process for Power Plant Flue Gas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 Capture Membrane Process for Power Plant Flue Gas Background The U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Program is performing research to develop advanced technologies focusing on carbon dioxide (CO 2 ) emissions control for existing pulverized coal-fired plants. This new focus on post-combustion and oxy-combustion CO 2 emissions control technology, CO 2 compression, and beneficial reuse is in response to the priority for advanced

268

Analytical Estimation of CO2 Storage Capacity in Depleted Oil and Gas Reservoirs Based on Thermodynamic State Functions  

E-Print Network [OSTI]

dimensions. Vertical discretization of grid size allows to improve aquifer influx modeling......................................... 55 Table 4.2? Reservoir model properties. ................................................................ 58 Table 4... fuel dependency will continue in the near future, increasing the need to develop economic and technologically feasible approaches to reduce and capture and dispose CO2 emissions. Geological storage of CO2 in aquifers and depleted oil and gas...

Valbuena Olivares, Ernesto

2012-02-14T23:59:59.000Z

269

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate Second Quarterly Report 2006 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing for simultaneous removal of CO2 and SO2. Corrosion of carbon steel in uninhibited MEA solution is increased

Rochelle, Gary T.

270

Central serotonin neurons are required for arousal to CO2  

E-Print Network [OSTI]

Central serotonin neurons are required for arousal to CO2 Gordon F. Buchanana,b,1 and George B neurons are stimulated by CO2, and sero- tonin activates thalamocortical networks, we hypothesized any arousal response to inhalation of 10% CO2 (with 21% O2 in balance N2) but had normal arousal

271

Monitoring and interpreting the ocean uptake of atmospheric CO2  

Science Journals Connector (OSTI)

...interpreting the ocean uptake of atmospheric CO2 Andrew J. Watson 1 * Nicolas Metzl 2 Ute...important sink for anthropogenically produced CO2, and on time scales longer than a century they will be the main repository for the CO2 that humans are emitting. Our knowledge...

2011-01-01T23:59:59.000Z

272

On the scatteringgreenhouse effect of CO 2 ice clouds  

E-Print Network [OSTI]

that young Mars was warm enough to support flowing water present a continuing enigma (Squyres and Kasting 1994). Kasting (1991) showed that, owing to the effects of CO 2 condensation on temperature lapse rate the optical effects of CO 2 ­ice clouds, but remarked that because CO 2 ­ice (unlike water­ice) has very low

Pierrehumbert, Raymond

273

In situ carbonation of peridotite for CO2 storage  

Science Journals Connector (OSTI)

...reaction in 1 region can be pumped into an adjacent area to...dissolved CO 2 in convecting seawater—only ?10 4 tons of CO 2 per km 3...convection, near-surface seawater would descend one hole...dissolved CO 2 from evolving seawater along the flow path...

Peter B. Kelemen; Jürg Matter

2008-01-01T23:59:59.000Z

274

Aqueous Carbonation of Natural Brucite: Relevance to CO2 Sequestration  

Science Journals Connector (OSTI)

Aqueous Carbonation of Natural Brucite: Relevance to CO2 Sequestration ... Products and reaction kinetics of natural brucite carbonation are studied at room temperature and moderate pCO2. ... Carbonation of natural brucite in H2O and diluted HCl is investigated at room temperature and moderate pCO2 to explore the products’ mineralogy and reaction kinetics. ...

Liang Zhao; Liqin Sang; Jun Chen; Junfeng Ji; H. Henry Teng

2009-11-30T23:59:59.000Z

275

Energy consumption analysis for CO2 separation from gas mixtures  

Science Journals Connector (OSTI)

Abstract CO2 separation is an energy intensive process, which plays an important role in both energy saving and CO2 capture and storage (CCS) implementation to deal with global warming. To quantitatively investigate the energy consumption of CO2 separation from different CO2 streams and analyze the effect of temperature, pressure and composition on energy consumption, in this work, the theoretical energy consumption of CO2 separation from flue gas, lime kiln gas, biogas and bio-syngas was calculated. The results show that the energy consumption of CO2 separation from flue gas is the highest and that from biogas is the lowest, and the concentration of CO2 is the most important factor affecting the energy consumption when the CO2 concentration is lower than 0.15 in mole fraction. Furthermore, if the CO2 captured from flue gases in CCS was replaced with that from biogases, i.e. bio-CO2, the energy saving would be equivalent to 7.31 million ton standard coal for China and 28.13 million ton standard coal globally, which corresponds to 0.30 billion US$ that can be saved for China and 1.36 billion US$ saved globally. This observation reveals the importance of trading fossil fuel-based CO2 with bio-CO2.

Yingying Zhang; Xiaoyan Ji; Xiaohua Lu

2014-01-01T23:59:59.000Z

276

Vehicular Sensing System for CO2 Monitoring Applications  

E-Print Network [OSTI]

--We are interested in monitoring the concentration of carbon dioxide (CO2) gas in a large field such as an urban area sensor, vehicular sensing system, wireless sensor network. I. INTRODUCTION Carbon dioxide (CO2) gas has1 Vehicular Sensing System for CO2 Monitoring Applications Shu-Chiung Hu, You-Chiun Wang, Chiuan

Tseng, Yu-Chee

277

CO2 Hydrate Composite for Ocean Carbon Sequestration  

Science Journals Connector (OSTI)

CO2 Hydrate Composite for Ocean Carbon Sequestration ... Further studies are needed to address hydrate conversion efficiency, scale-up criteria, sequestration longevity, and impact on the ocean biota before in-situ production of sinking CO2 hydrate composite can be applied to oceanic CO2 storage and sequestration. ...

Sangyong Lee; Liyuan Liang; David Riestenberg; Olivia R. West; Costas Tsouris; Eric Adams

2003-07-18T23:59:59.000Z

278

Mesoporous Organosilica with Amidoxime Groups for CO2 Sorption  

Science Journals Connector (OSTI)

Mesoporous Organosilica with Amidoxime Groups for CO2 Sorption ... This work reports a successful use of the aforementioned strategy for the development of ordered mesoporous organosilica (OMO) with amidoxime groups for CO2 sorption. ... The resulting series of amidoxime-containing OMO was prepared and used for CO2 sorption at low (25 °C) and elevated (60, 120 °C) temperatures. ...

Chamila Gunathilake; Mietek Jaroniec

2014-07-03T23:59:59.000Z

279

Post Waterflood CO2 Miscible Flood in Light Oil, Fluvial-Dominated Deltaic Reservoir, Class I  

SciTech Connect (OSTI)

This report demonstrates the effectiveness of the CO2 miscible process in Fluvial Dominated Deltaic reservoirs. It also evaluated the use of horizontal CO2 injection wells to improve the overall sweep efficiency. A database of FDD reservoirs for the gulf coast region was developed by LSU, using a screening model developed by Texaco Research Center in Houston. The results of the information gained in this project is disseminated throughout the oil industry via a series of SPE papers and industry open forums.

Bou-Mikael, Sami

2002-02-05T23:59:59.000Z

280

Enhanced CO2 Storage and Sequestration in Deep Saline Aquifers by Nanoparticles: Commingled Disposal of Depleted Uranium and CO2  

Science Journals Connector (OSTI)

Geological storage of anthropogenic CO2 emissions in deep saline aquifers has recently received tremendous attention in the scientific literature. Injected buoyant CO2 accumulates at the top part of the aquifer u...

Farzam Javadpour; Jean-Philippe Nicot

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Advanced Amine Solvent Formulations and Process Integration for Near-Term CO2 Capture Success  

SciTech Connect (OSTI)

This Phase I SBIR project investigated the economic and technical feasibility of advanced amine scrubbing systems for post-combustion CO2 capture at coal-fired power plants. Numerous combinations of advanced solvent formulations and process configurations were screened for energy requirements, and three cases were selected for detailed analysis: a monoethanolamine (MEA) base case and two “advanced” cases: an MEA/Piperazine (PZ) case, and a methyldiethanolamine (MDEA) / PZ case. The MEA/PZ and MDEA/PZ cases employed an advanced “double matrix” stripper configuration. The basis for calculations was a model plant with a gross capacity of 500 MWe. Results indicated that CO2 capture increased the base cost of electricity from 5 cents/kWh to 10.7 c/kWh for the MEA base case, 10.1 c/kWh for the MEA / PZ double matrix, and 9.7 c/kWh for the MDEA / PZ double matrix. The corresponding cost per metric tonne CO2 avoided was 67.20 $/tonne CO2, 60.19 $/tonne CO2, and 55.05 $/tonne CO2, respectively. Derated capacities, including base plant auxiliary load of 29 MWe, were 339 MWe for the base case, 356 MWe for the MEA/PZ double matrix, and 378 MWe for the MDEA / PZ double matrix. When compared to the base case, systems employing advanced solvent formulations and process configurations were estimated to reduce reboiler steam requirements by 20 to 44%, to reduce derating due to CO2 capture by 13 to 30%, and to reduce the cost of CO2 avoided by 10 to 18%. These results demonstrate the potential for significant improvements in the overall economics of CO2 capture via advanced solvent formulations and process configurations.

Fisher, Kevin S.; Searcy, Katherine; Rochelle, Gary T.; Ziaii, Sepideh; Schubert, Craig

2007-06-28T23:59:59.000Z

282

CO2 Flux Estimated from Air-Sea Difference in CO2 Partial Pressure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Flux Estimated from Air-Sea Difference in CO2 Partial Pressure (Revised October 2009) CO2 Flux Estimated from Air-Sea Difference in CO2 Partial Pressure (Revised October 2009) The files in this site contain a revised (October 2009) version of the climatological mean values in 4° Latitude X 5° Longitude box areas and the distribution maps. These were originally published in: Takahashi, et al. (2009), DSR II, 56, 554-577. The data file containing annual flux data for each 4° X 5° box is located here. The data file from which this map was created, including all 12 months of data is here. This data file, in ASCII form, also contains the flux data and the intermediate values used to calculate that flux for each month. In December 2010 our colleague, R. Wanninkhof pointed out a problem with the flux data for the month of December. The file of ice coverage for December was corrupted and showed zero ice for the entire month, worldwide. This has been corrected with the estimated percent of ice and the flux recalculated. Version "c" of the data files contain this correction.

283

Industrial CO2 Removal: CO2 Capture from Ambient Air and Geological Sequestration  

SciTech Connect (OSTI)

This abstract and its accompanying presentation will provide an overview of two distinct industrial processes for removing carbon dioxide (CO2) from the atmosphere as a means of addressing anthropogenic climate change. The first of these is carbon dioxide capture and storage (CCS) coupled with large scale biomass production (hereafter referred to as bioCCS). The second is CO2 capture from ambient air via industrial systems (hereafter referred to as direct air capture (DAC)). In both systems, the captured CO2 would be injected into deep geologic formations so as to isolate it from the atmosphere. The technical literature is clear that both of these technologies are technically feasible as of today (IPCC, 2005; Keith, 2009; Lackner, 2009; Luckow et al., 2010; Ranjan and Herzog, 2011). What is uncertain is the relative cost of these industrial ambient-air CO2 removal systems when compared to other emissions mitigation measures, the ultimate timing and scale of their deployment, and the resolution of potential site specific constraints that would impact their ultimate commercial deployment.

Dooley, James J.

2011-06-08T23:59:59.000Z

284

CO2 Mineral Sequestration Studies in US  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mineral Sequestration Studies in US Mineral Sequestration Studies in US Philip Goldberg 1 , Zhong-Ying Chen 2 , William O'Connor 3 , Richard Walters 3 , and Hans Ziock 4 1 National Energy Technology Laboratory, P.O. Box 10940, Pittsburgh, PA 15236, goldberg@netl.doe.gov, (412)386-5806 2 Science Applications International Corporation, 1710 Goodridge Dr. McLean, VA, zhong- ying.chen@saic.com, (703)676-7328 3 Albany Research Center, Albany, OR oconner@arc.doe.gov, walters@alrc.doe, (541)967-5834 4 Los Alamos National Laboratory, Los Alamos, NM, ksl@lanl.gov, ziock@lanl.gov, (505)667- 7265 Abstract Carbon sequestration by reacting naturally occurring Mg and Ca containing minerals with CO 2 to form carbonates has many unique advantages. Most notably is the fact that carbonates have a lower energy state than CO

285

Gulf of Mexico Miocene CO2 Site Characterization Mega Transect  

SciTech Connect (OSTI)

This project characterized the Miocene-age sub-seafloor stratigraphy in the near-offshore portion of the Gulf of Mexico adjacent to the Texas coast. The large number of industrial sources of carbon dioxide (CO2) in coastal counties and the high density of onshore urbanization and environmentally sensitive areas make this offshore region extremely attractive for long-term storage of carbon dioxide emissions from industrial sources (CCS). The study leverages dense existing geologic data from decades of hydrocarbon exploration in and around the study area to characterize the regional geology for suitability and storage capacity. Primary products of the study include: regional static storage capacity estimates, sequestration “leads” and prospects with associated dynamic capacity estimates, experimental studies of CO2-brine-rock interaction, best practices for site characterization, a large-format ‘Atlas’ of sequestration for the study area, and characterization of potential fluid migration pathways for reducing storage risks utilizing novel high-resolution 3D (HR3D) seismic surveys. In addition, three subcontracted studies address source-to-sink matching optimization, offshore well bore management and environmental aspects. The various geologic data and interpretations are integrated and summarized in a series of cross-sections and maps, which represent a primary resource for any near-term commercial deployment of CCS in the area. The regional study characterized and mapped important geologic features (e.g., Clemente-Tomas fault zone, the regionally extensive Marginulina A and Amphistegina B confining systems, etc.) that provided an important context for regional static capacity estimates and specific sequestration prospects of the study. A static capacity estimate of the majority of the Study area (14,467 mi2) was estimated at 86 metric Gigatonnes. While local capacity estimates are likely to be lower due to reservoir-scale characteristics, the offshore Miocene interval is a storage resource of National interest for providing CO2 storage as an atmospheric emissions abatement strategy. The natural petroleum system was used as an analog to infer seal quality and predict possible migration pathways of fluids in an engineered system of anthropogenic CO2 injection and storage. The regional structural features (e.g., Clemente-Tomas fault zone) that exert primary control on the trapping and distribution of Miocene hydrocarbons are expected to perform similarly for CCS. Industrial?scale CCS will require storage capacity utilizing well?documented Miocene hydrocarbon (dominantly depleted gas) fields and their larger structural closures, as well as barren (unproductive, brine?filled) closures. No assessment was made of potential for CO2 utilization for enhanced oil and gas recovery. The use of 3D numerical fluid flow simulations have been used in the study to greatly assist in characterizing the potential storage capacity of a specific reservoir. Due to the complexity of geologic systems (stratigraphic heterogeneity) and inherent limitations on producing a 3D geologic model, these simulations are typically simplified scenarios that explore the influence of model property variability (sensitivity study). A specific site offshore San Luis Pass (southern Galveston Island) was undertaken successfully, indicating stacked storage potential. Downscaling regional capacity estimates to the local scale (and the inverse) has proven challenging, and remains an outstanding gap in capacity assessments. In order to characterize regional seal performance and identify potential brine and CO2 leakage pathways, results from three high-resolution 3D (HR3D) seismic datasets acquired by the study using novel HR3D (P-Cable) acquisition system showed steady and significant improvements in data quality because of improved acquisition and processing technique. Finely detailed faults and stratigraphy in the shallowest 1000 milliseconds (~800 m) of data allowed for the identification and mapping of unconformable surfaces including what is probably

Meckel, Timothy; Trevino, Ramon

2014-09-30T23:59:59.000Z

286

CINETIQUES DE SORPTION DU CO2 DANS LE CADRE DU STOCKAGE GEOLOGIQUE DU CO2 DANS LE CHARBON  

E-Print Network [OSTI]

CINETIQUES DE SORPTION DU CO2 DANS LE CADRE DU STOCKAGE GEOLOGIQUE DU CO2 DANS LE CHARBON KINETIC PROCESSES OF CO2 SORPTION FOR CO2 STORAGE IN COAL SEAMS Delphine CHARRIERE1, 2 , Zbigniew POKRYSZKA1 récupération assistée du méthane requiert des informations sur les mécanismes de sorption de gaz. Dans ce

Boyer, Edmond

287

Relationships between soil CO2 concentration and CO2 production, temperature, water content, and gas diffusivity: implications for field studies through sensitivity analyses  

Science Journals Connector (OSTI)

Soil CO2 levels reflect CO2 production and transport in soil and provide valuable information about soil CO2 dynamics. However, extracting information from soil CO2 profiles is often difficult because of the comp...

Shoji Hashimoto; Hikaru Komatsu

2006-02-01T23:59:59.000Z

288

Adsorption separation of CO2 from simulated flue gas mixtures by novel CO2 ''molecular basket'' adsorbents  

Science Journals Connector (OSTI)

Adsorption separation of CO2 from simulated flue gas mixtures containing CO2, O2, and N2 by using a novel CO2 ''molecular basket'' adsorbent was investigated in a flow adsorption separation system. The novel CO2 ''molecular basket'' adsorbents were developed by synthesising mesoporous molecular sieve MCM-41 and modifying it with polyethylenimine (PEI). The influence of operation conditions, including feed flow rate, temperature, feed CO2 concentration, and sweep gas flow rate, on the CO2 adsorption/desorption separation performance and CO2 breakthrough were examined. The CO2 adsorption capacity was 91.0 ml (STP)/g-PEI, which was 27 times higher than that of the MCM-41 alone. Further, the adsorbent showed separation selectivity of greater than 1000 for CO2/N2 ratio and approximately 180 for CO2/O2, which are significantly higher than those of the MCM-41, zeolites, and activated carbons. Cyclic adsorption/desorption measurements showed that the CO2 ''molecular basket'' adsorbent was stable at 75°C. However, the CO2 ''molecular basket'' adsorbent was not stable when the operation temperature was higher than 100°C.

Xiaochun Xu; Chunshan Song; John M. Andresen; Bruce G. Miller; Alan W. Scaroni

2004-01-01T23:59:59.000Z

289

Photosynthetic Traits in Wheat Grown under Decreased and Increased CO2 Concentration, and after Transfer to Natural CO2 concentration  

Science Journals Connector (OSTI)

Wheat plants were grown from sowing to day 18 in 26-dm3 chambers at three different CO2 concentrations: 150 (-CO2), 350 (C, control), 800 (+CO2) ?mol mol-1. Afterwards, plants of the three variants were grown at ...

P. Ulman; J. ?atský; J. Pospíšilová

2000-08-01T23:59:59.000Z

290

Nanoclay-Based Solid Sorbents for CO2 Capture  

Science Journals Connector (OSTI)

Nanoclay-Based Solid Sorbents for CO2 Capture ... As seen from the figure, the untreated nanoclay shows very little CO2 capture, while amine-treated nanoclays show considerably higher CO2 capture capacities, demonstrating the effectiveness of the amine treatment. ... The CO2 sorption capacity increases as the temperature is increased from 50 to 85 °C, and it reaches as high as 7.5% at 85 °C for the nanoclay treated with both APTMS and PEI, although the nanoclays treated with either APTMS or PEI show about 6% CO2 capture capacity. ...

Elliot A. Roth; Sushant Agarwal; Rakesh K. Gupta

2013-03-19T23:59:59.000Z

291

City-level energy and CO2 reduction effect by introducing new residential water heaters  

Science Journals Connector (OSTI)

Simulation models for a variety of new water heater systems were developed and the models were integrated into a city-level residential energy end-use model for Osaka City. Using the model, the potential of energy conservation and CO2 emission-reduction by introducing new residential water heaters was evaluated at the city-level. Optimal water-heating systems for each household category for primary energy reduction, CO2 emission-reduction, or cost reduction were identified by applying the end-use demand model. The effect of subsidies for installing more efficient systems and the influence of diffusion of these systems on electricity load curves were also discussed.

Yoshiyuki Shimoda; Tomo Okamura; Yohei Yamaguchi; Yukio Yamaguchi; Ayako Taniguchi; Takao Morikawa

2010-01-01T23:59:59.000Z

292

DOE Hydrogen Analysis Repository: CO2 Reduction Benefits Analysis for Fuel  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Reduction Benefits Analysis for Fuel Cell Applications CO2 Reduction Benefits Analysis for Fuel Cell Applications Project Summary Full Title: CO2 Reduction Benefits Analysis for Fuel Cell Applications Project ID: 263 Principal Investigator: Chip Friley Brief Description: This analysis used the 10-region U.S. MARKAL model to quantify the impact of changes in production, distribution and vehicle costs and carbon prices on fuel cell vehicle penetration and overall carbon dioxide emissions. Keywords: Carbon dioxide (CO2); Hydrogen; Fuel cells Purpose Perform analysis of topics of interest to the DOE Fuel Cell Technologies program related to projected carbon dioxide reduction benefits of fuel cell applications. Performer Principal Investigator: Chip Friley Organization: Brookhaven National Laboratory (BNL) Address: Mail Stop 475C

293

A Feasibility Study of Non-Seismic Geophysical Methods forMonitoring Geologic CO2 Sequestration  

SciTech Connect (OSTI)

Because of their wide application within the petroleumindustry it is natural to consider geophysical techniques for monitoringof CO2 movement within hydrocarbon reservoirs, whether the CO2 isintroduced for enhanced oil/gas recovery or for geologic sequestration.Among the available approaches to monitoring, seismic methods are by farthe most highly developed and applied. Due to cost considerations, lessexpensive techniques have recently been considered. In this article, therelative merits of gravity and electromagnetic (EM) methods as monitoringtools for geological CO2 sequestration are examined for two syntheticmodeling scenarios. The first scenario represents combined CO2 enhancedoil recovery (EOR) and sequestration in a producing oil field, theSchrader Bluff field on the north slope of Alaska, USA. The secondscenario is a simplified model of a brine formation at a depth of 1,900m.

Gasperikova, Erika; Hoversten, G. Michael

2006-07-01T23:59:59.000Z

294

Dual-phase membrane for High temperature CO2 separation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Jerry Y.S. Lin Jerry Y.S. Lin Chemical Engineering Arizona State University Tempe, AZ 85287 Jerry.lin@asu.edu Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic-Carbonate Membrane Reactor 2 Background 3 CO 2 Capture Methods and Efficiency Improvement Coal, Natural gas, Biomass CO 2 separation Power plant CO 2 compression, conditioning for sequestration Gasification Reforming Shift CO 2 Separation Power plant Power plant Air separation N 2 /O 2 CO 2 Post- combustion H 2 /CO H 2 /CO H 2 CO 2 H 2 O/N 2 /O 2 CO 2 H 2 Pre- combustion Air N 2 O 2 or O 2 /CO 2 CO 2 Oxyfuel Combustion Air separation Air Air separation Air Air separation Air Air Air Air Air separation Air Air separation Air N 2 Air separation Air O 2 or O 2 /CO 2 N 2 Air separation Air N 2 Air O 2 or O 2 /CO 2 N 2 Air Air separation N 2 Air 4 Water-Gas-Shift Reaction and Membrane Reactor Reforming

295

Site Characterization of Promising Geologic Formations for CO2 Storage |  

Broader source: Energy.gov (indexed) [DOE]

Site Characterization of Promising Geologic Formations for CO2 Site Characterization of Promising Geologic Formations for CO2 Storage Site Characterization of Promising Geologic Formations for CO2 Storage In September 2009, the U.S. Department of Energy announced the award of 11 projects with a total project value of $75.5 million* to conduct site characterization of promising geologic formations for CO2 storage. These Recovery Act projects will increase our understanding of the potential for these formations to safely and permanently store CO2. The information gained from these projects (detailed below) will further DOE's efforts to develop a national assessment of CO2 storage capacity in deep geologic formations. Site Characterization of Promising Geologic Formations for CO2 Storage * Subsequently, the Board of Public Works project in Holland, MI has been

296

ARM - Datastreams - 30co2flx60m  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

flx60m flx60m Documentation Data Quality Plots Citation DOI: 10.5439/1025038 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : 30CO2FLX60M Eddy Correlation CO2 Flux Data: 60 m samples, 30-min avg Active Dates 2001.01.01 - 2013.01.27 Measurement Categories Atmospheric Carbon, Atmospheric State, Surface Properties Originating Instrument Carbon Dioxide Flux Measurement Systems (CO2FLX) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Atmospheric turbulence Lmoni CO2 flux fc_corr CO2 flux fc_wpl_h CO2 flux fc_wpl_le Sensible heat flux h Latent heat flux le CO2 concentration mean_c Atmospheric moisture

297

Hyperspectral Geobotanical Remote Sensing For Co2 Storage Monitoring | Open  

Open Energy Info (EERE)

Hyperspectral Geobotanical Remote Sensing For Co2 Storage Monitoring Hyperspectral Geobotanical Remote Sensing For Co2 Storage Monitoring Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Book: Hyperspectral Geobotanical Remote Sensing For Co2 Storage Monitoring Details Activities (1) Areas (1) Regions (0) Abstract: This project's goal is to develop remote sensing methods for early detection and spatial mapping, over whole regions simultaneously, of any surface areas under which there are significant CO2 leaks from deep underground storage formations. If large amounts of CO2 gas percolated up from a storage formation below to within plant root depth of the surface, the CO2 soil concentrations near the surface would become elevated and would affect individual plants and their local plant ecologies. Excessive soil CO2 concentrations are observed to significantly affect local plant

298

Effect of CO2 sorption-induced anisotropic swelling on caprock sealing efficiency  

Science Journals Connector (OSTI)

Abstract Caprock sealing integrity is a key issue to CO2 sequestration in a saline aquifer over a long period. Caprock as a sealing layer is defined as water-saturated formation with a sufficient capillary entry pressure to prevent the upward migration of a buoyant fluid. Most caprocks are naturally anisotropic, hence the effect of CO2 sorption-induced anisotropic swelling may heavily impact their sealing efficiency. This paper proposes a numerical model based on a conceptual model for the investigation of the sealing efficiency of anisotropic caprocks, where caprock is a composite body of fracture network and shale matrix. Two-phase flow of brine water and CO2 is observed only in the fracture network but the CO2 in the fractures further diffuses into shale matrix through a much slower diffusion process and makes the shale matrix anisotropically swell or shrink, thus significantly altering the directional porosity and permeability of the fracture network. This numerical model is verified by a storage reservoir and applied to a caprock layer to explore the mechanism for self-enhancement or self-limiting in the CO2–brine mixing zone if anisotropic swelling is considered. These examples demonstrate that this model is able to numerically simulate the CO2 storage relevant geological systems within anisotropic shale. The sorption-induced anisotropic swelling of shale matrix has significant impacts on the caprock sealing efficiency. This work provides an alternative tool to enrich the numerical modeling for the assessment of CO2 caprock sealing efficiency in natural shale caprocks.

J.G. Wang; Yang Ju; Feng Gao; Yan Peng; Yanan Gao

2014-01-01T23:59:59.000Z

299

NETL: IEP - Post-Combustion CO2 Emissions Control - CO2 Capture Membrane  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Capture Membrane Process for Power Plant Flue Gas CO2 Capture Membrane Process for Power Plant Flue Gas Project No.: DE-NT0005313 CLICK ON IMAGE TO ENLARGE Research Triangle Institute (RTI) International is researching fluorinated polymer membranes for carbon dioxide capture. RTI's research effort includes membrane materials development, module design, and process design. RTI is pursuing the development of two hollow-fiber membrane materials. First, RTI is working with Generon to develop a membrane material constructed of polycarbonate-based polymers. Lab-scale membrane modules are being studied with simulated flue-gas mixtures with and without flue gas emission contaminants. Two larger-scale polycarbonate membrane module prototypes are being tested with a slipstream of actual flue gas from the U.S. Environmental Protection Agency's (EPA) Multipollutant

300

Supersonic Technology for CO2 Capture: A High Efficiency Inertial CO2 Extraction System  

SciTech Connect (OSTI)

IMPACCT Project: Researchers at ATK and ACENT Laboratories are developing a device that relies on aerospace wind-tunnel technologies to turn CO2 into a condensed solid for collection and capture. ATK’s design incorporates a special nozzle that converges and diverges to expand flue gas, thereby cooling it off and turning the CO2 into solid particles which are removed from the system by a cyclonic separator. This technology is mechanically simple, contains no moving parts and generates no chemical waste, making it inexpensive to construct and operate, readily scalable, and easily integrated into existing facilities. The increase in the cost to coal-fired power plants associated with introduction of this system would be 50% less than current technologies.

None

2010-07-01T23:59:59.000Z

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301

14 Diffusive CO2 Flux at the Air-Water Interface of the Robert-Bourassa Hydroelectric Reservoir in  

E-Print Network [OSTI]

14 Diffusive CO2 Flux at the Air-Water Interface of the Robert-Bourassa Hydroelectric Reservoir Hydroelectric reservoirs and lakes in boreal Québec produce greenhouse gases (GHG) mainly in the form of CO2 of the interface. When applied to the Robert- Bourassa hydroelectric reservoir in boreal Québec, this model

Long, Bernard

302

A Computationally Efficient Approach to Applying the SAFT Equation for CO2 + H2O Phase Equilibrium  

E-Print Network [OSTI]

A Computationally Efficient Approach to Applying the SAFT Equation for CO2 + H2O Phase Equilibrium SAFT � CO2 ? H2O � Phase equilibrium � Geologic sequestration � Efficient computation Abbreviations and pressure range [6�20]. In addition to these models, SAFT is a molecular based theory which is designed

Patzek, Tadeusz W.

303

Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO2: Implications for inversion analyses  

E-Print Network [OSTI]

Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO2 carbon emissions. We used TransCom3 annual mean simulations from three transport models to evaluate carbon emission and oxidation processes in deriving inversion estimates of CO2 surface fluxes. Citation

Krakauer, Nir Y.

304

QGESS: CO2 Impurity Design Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Q Q U U A A L L I I T T Y Y G G U U I I D D E E L L I I N N E E S S F F O O R R E E N N E E R R G G Y Y S S Y Y S S T T E E M M S S T T U U D D I I E E S S C C O O 2 2 I I m m p p u u r r i i t t y y D D e e s s i i g g n n P P a a r r a a m m e e t t e e r r s s DOE/NETL-2010/???? DOE/NETL-341/011212 August 2013 CO 2 Impurity Design Parameters Quality Guidelines for Energy System Studies Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.

305

Impact of mesophyll diffusion on estimated global land CO2 fertilization  

Science Journals Connector (OSTI)

...historical atmospheric CO2 by Earth system models. Without this correction...limitation. Our results imply that Earth system models (ESMs) will overpredict the long-term...atmospheric carbon dioxide biases in Earth System Models . J Geophys Res Biogeosci 119 ( 2 ): 141...

Ying Sun; Lianhong Gu; Robert E. Dickinson; Richard J. Norby; Stephen G. Pallardy; Forrest M. Hoffman

2014-01-01T23:59:59.000Z

306

CO2 flood tests on whole core samples of the Mt. Simon sandstone, Illinois Basin  

SciTech Connect (OSTI)

Geological sequestration of CO2, whether by enhanced oil recovery (EOR), coal-bed methane (CBM) recovery, or saline aquifer injection is a promising near-term sequestration methodology. While tremendous experience exists for EOR, and CBM recovery has been demonstrated in existing fields, saline aquifer injection studies have only recently been initiated. Studies evaluating the availability of saline aquifers suitable for CO2 injection show great potential, however, the long-term fate of the CO2 injected into these ancient aqueous systems is still uncertain. For the subject study, a series of laboratory-scale CO2 flood tests were conducted on whole core samples of the Mt. Simon sandstone from the Illinois Basin. By conducting these tests on whole core samples rather than crushed core, an evaluation of the impact of the CO2 flood on the rock mechanics properties as well as the geochemistry of the core and brine solution has been possible. This empirical data could provide a valuable resource for the validation of reservoir models under development for these engineered CO2 systems.

O'Connor, William K.; Rush, Gilbert E.

2005-09-01T23:59:59.000Z

307

Developing a Comprehensive Risk Assessment Framework for Geological Storage CO2  

SciTech Connect (OSTI)

The operational risks for CCS projects include: risks of capturing, compressing, transporting and injecting CO?; risks of well blowouts; risk that CO? will leak into shallow aquifers and contaminate potable water; and risk that sequestered CO? will leak into the atmosphere. This report examines these risks by using information on the risks associated with analogue activities such as CO2 based enhanced oil recovery (CO2-EOR), natural gas storage and acid gas disposal. We have developed a new analysis of pipeline risk based on Bayesian statistical analysis. Bayesian theory probabilities may describe states of partial knowledge, even perhaps those related to non-repeatable events. The Bayesian approach enables both utilizing existing data and at the same time having the capability to adsorb new information thus to lower uncertainty in our understanding of complex systems. Incident rates for both natural gas and CO2 pipelines have been widely used in papers and reports on risk of CO2 pipelines as proxies for the individual risk created by such pipelines. Published risk studies of CO2 pipelines suggest that the individual risk associated with CO2 pipelines is between 10-3 and 10-4, which reflects risk levels approaching those of mountain climbing, which many would find unacceptably high. This report concludes, based on a careful analysis of natural gas pipeline failures, suggests that the individual risk of CO2 pipelines is likely in the range of 10-6 to 10-7, a risk range considered in the acceptable to negligible range in most countries. If, as is commonly thought, pipelines represent the highest risk component of CCS outside of the capture plant, then this conclusion suggests that most (if not all) previous quantitative- risk assessments of components of CCS may be orders of magnitude to high. The potential lethality of unexpected CO2 releases from pipelines or wells are arguably the highest risk aspects of CO2 enhanced oil recovery (CO2-EOR), carbon capture, and storage (CCS). Assertions in the CCS literature, that CO2 levels of 10% for ten minutes, or 20 to 30% for a few minutes are lethal to humans, are not supported by the available evidence. The results of published experiments with animals exposed to CO2, from mice to monkeys, at both normal and depleted oxygen levels, suggest that lethal levels of CO2 toxicity are in the range 50 to 60%. These experiments demonstrate that CO2 does not kill by asphyxia, but rather is toxic at high concentrations. It is concluded that quantitative risk assessments of CCS have overestimated the risk of fatalities by using values of lethality a factor two to six lower than the values estimated in this paper. In many dispersion models of CO2 releases from pipelines, no fatalities would be predicted if appropriate levels of lethality for CO2 had been used in the analysis.

Duncan, Ian

2014-08-31T23:59:59.000Z

308

The effect of CO2 regulations on the cost of corn ethanol production  

Science Journals Connector (OSTI)

To explore the effect of CO2 price on the effective cost of ethanol production we have developed a model that integrates financial and emissions accounting for dry-mill corn ethanol plants. Three policy options are modeled: (1) a charge per unit of life cycle CO2 emissions, (2) a charge per unit of direct biorefinery emissions only, and (3) a low carbon fuel standard (LCFS). A CO2 charge on life cycle emissions increases production costs by between $0.005 and $0.008 l?1 per $10 Mg?1 CO2 price increment, across all modeled plant energy systems, with increases under direct emissions somewhat lower in all cases. In contrast, a LCFS increases the cost of production for selected plant energy systems only: a LCFS requiring reductions in average fuel global warming intensity (GWI) with a target of 10% below the 2005 baseline increases the production costs for coal-fired plants only. For all other plant types, the LCFS operates as a subsidy. The findings depend strongly on the magnitude of a land use change adder. Some land use change adders currently discussed in the literature will push the GWI of all modeled production systems above the LCFS target, flipping the CO2 price from a subsidy to a tax.

R J Plevin; S Mueller

2008-01-01T23:59:59.000Z

309

Efficiency of Sequestrating CO2 in the Ocean  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Efficiency of Sequestrating CO Efficiency of Sequestrating CO 2 in the Ocean Richard Dewey (RDewey@uvic.ca ; 250-472-4009) University of Victoria, P.O. Box 3055, Victoria BC Canada V8N 3P6 Gilbert Stegen (Dr_Stegen@hotmail.com ; 425-869-7236) SAIC and GRS Associates 17257 NE 116 th St., Redmond WA USA 98052 Abstract Ocean disposal of CO 2 continues to be of great interest as a possible mitigation strategy for reducing atmospheric emissions of anthropogenic CO 2 . The ocean, and ultimately ocean sediments, naturally represents the single largest sink of CO 2 , and annually sequesters several gigatons of carbon from the atmosphere. The injection of additional CO 2 to artificially accelerate the use of the ocean as a sink for atmospheric CO 2 and avoid a short-term build-up of greenhouse gases has been investigated for

310

High Co2 Emissions Through Porous Media- Transport Mechanisms And  

Open Energy Info (EERE)

Co2 Emissions Through Porous Media- Transport Mechanisms And Co2 Emissions Through Porous Media- Transport Mechanisms And Implications For Flux Measurement And Fractionation Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: High Co2 Emissions Through Porous Media- Transport Mechanisms And Implications For Flux Measurement And Fractionation Details Activities (1) Areas (1) Regions (0) Abstract: Diffuse emissions of CO2 are known to be large around some volcanoes and hydrothermal areas. Accumulation-chamber measurements of CO2 flux are increasingly used to estimate the total magmatic or metamorphic CO2 released from such areas. To assess the performance of accumulation chamber systems at fluxes one to three orders of magnitude higher than normally encountered in soil respiration studies, a test system was

311

People's Republic of China Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Asia Asia » People's Republic of China People's Republic of China Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends According to reported energy statistics, coal production and use in China has increased ten-fold since the 1960s. As a result, Chinese fossil-fuel CO2 emissions have more than doubled 2000 alone. At 1.92 billion metric tons of carbon in 2008, the People's Republic of China is the world's largest emitter of CO2 due to fossil-fuel use and cement production. Even with the reported decline in Chinese emissions from 1997 to 1999, China's industrial emissions of CO2 have grown phenomenally since 1950, when China stood tenth among nations based on annual fossil-fuel CO2 emissions. From 1970 to 1997, China's fossil-fuel CO2 emissions grew at an annual rate of

312

Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii The graphs on this page are generated from data taken from "Trends in Carbon Dioxide" page on the Department of Commerce/National Oceanic and Atmospheric Administration (NOAA) website. The NOAA website presents monthly and weekly atmospheric CO2 concentrations measured at the Mauna Loa Observatory in Hawaii. It offers weekly and monthly data, additional graphs, analysis, descriptions of how the data are collected, and an animation of historical changes in atmospheric CO2. Mauna Loa constitutes the longest record of direct measurements of CO2 in the atmosphere. The measurents were started by C. David Keeling of the Scripps Institution of Oceanography in March of 1958. Recent Monthly Average CO2

313

CO2 Sequestration Potential of Texas Low-Rank Coals  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Co Co 2 SequeStration Potential of texaS low-rank CoalS Background Fossil fuel combustion is the primary source of emissions of carbon dioxide (CO 2 ), a major greenhouse gas. Sequestration of CO 2 by injecting it into geologic formations, such as coal seams, may offer a viable method for reducing atmospheric CO 2 emissions. Injection into coal seams has the potential added benefit of enhanced coalbed methane recovery. The potential for CO 2 sequestration in low-rank coals, while as yet undetermined, is believed to differ significantly from that for bituminous coals. To evaluate the feasibility and the environmental, technical, and economic impacts of CO 2 sequestration in Texas low-rank coal beds, the Texas Engineering Experimental Station is conducting a four-year study

314

ARM - Datastreams - 30co2flx4mmet  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mmet mmet Documentation Data Quality Plots Citation DOI: 10.5439/1025037 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : 30CO2FLX4MMET Eddy Correlation CO2 Flux Data: 4 m samples, meteorological data, 30-min stats Active Dates 2002.12.18 - 2013.01.27 Measurement Categories Atmospheric Carbon, Atmospheric State, Radiometric, Surface Properties Originating Instrument Carbon Dioxide Flux Measurement Systems (CO2FLX) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Atmospheric turbulence Lmoni Atmospheric pressure bar_pres CO2 flux fc_corr CO2 flux fc_wpl_h CO2 flux fc_wpl_le Sensible heat flux

315

Uncertainty quantification for CO2 sequestration and enhanced oil recovery  

E-Print Network [OSTI]

This study develops a statistical method to perform uncertainty quantification for understanding CO2 storage potential within an enhanced oil recovery (EOR) environment at the Farnsworth Unit of the Anadarko Basin in northern Texas. A set of geostatistical-based Monte Carlo simulations of CO2-oil-water flow and reactive transport in the Morrow formation are conducted for global sensitivity and statistical analysis of the major uncertainty metrics: net CO2 injection, cumulative oil production, cumulative gas (CH4) production, and net water injection. A global sensitivity and response surface analysis indicates that reservoir permeability, porosity, and thickness are the major intrinsic reservoir parameters that control net CO2 injection/storage and oil/gas recovery rates. The well spacing and the initial water saturation also have large impact on the oil/gas recovery rates. Further, this study has revealed key insights into the potential behavior and the operational parameters of CO2 sequestration at CO2-EOR s...

Dai, Zhenxue; Fessenden-Rahn, Julianna; Middleton, Richard; Pan, Feng; Jia, Wei; Lee, Si-Yong; McPherson, Brian; Ampomah, William; Grigg, Reid

2014-01-01T23:59:59.000Z

316

Reaction of Cp*(CO)2ReRe(CO)2Cp* with Alkynes Produces Dimetallacyclopentenones Cp*(CO)2Re(?-?1,?3-CRCR‘CO)Re(CO)Cp* Which React with Acid To Form Cationic Bridging Vinyl Complexes  

Science Journals Connector (OSTI)

Reaction of Cp*(CO)2ReRe(CO)2Cp* with Alkynes Produces Dimetallacyclopentenones Cp*(CO)2Re(?-?1,?3-CRCR‘CO)Re(CO)Cp* Which React with Acid To Form Cationic Bridging Vinyl Complexes ... Cp*(CO)2ReRe(CO)2Cp* reacted with terminal alkynes HC?CR to produce dimetallacyclopentenones Cp*(CO)2Re(?-?1,?3-CHCRCO)Re(CO)Cp*. ... Protonation of the dimetallacyclopentenones with CF3CO2H produced (?-vinyl)dirhenium cations [Cp*(CO)2Re(?-?1,?2-CHCHR)Re(CO)2Cp*]+. ...

Charles P. Casey; Ronald S. Cariño; Hiroyuki Sakaba

1997-02-04T23:59:59.000Z

317

Aquatic primary production in a high-CO2 world  

E-Print Network [OSTI]

Aquatic primary production in a high-CO2 world Etienne Low-De´carie, Gregor F. Fussmann, and Graham-Penfield, Montreal, QC, H3A 1B1, Canada Here, we provide a review of the direct effect of increas- ing CO2 on aquatic: the assessment of theories about limitation of productivity and the integration of CO2 into the co

Fussman, Gregor

318

IMPLEMENTING A NOVEL CYCLIC CO2 FLOOD IN PALEOZOIC REEFS  

SciTech Connect (OSTI)

Recycled CO2 is being used in this demonstration project to produce bypassed oil from the Silurian Dover 35 Niagaran pinnacle reef located in Otsego County, Michigan. CO2 injection in the Dover 35 field into the Salling-Hansen 4-35A well began on May 6, 2004. A second injection well, the Salling-Hansen 1-35, commenced injection in August 2004. Oil production in the Pomerzynski 5-35 producing well increased from 9 BOPD prior to operations to an average of 165 BOPD in December, 2004 and has produced at an average rate of 61 BOPD (Jan-Dec, 2005). The Salling-Hansen 4-35A also produced during this reporting period an average of 29 BOPD. These increases have occurred as a result of CO2 injection and the production rate appears to be stabilizing. CO2 injection volume has reached approximately 2.18 BCF. The CO2 injection phase of this project has been fully operational since December 2004 and most downhole mechanical issues have been solved and surface facility modifications have been completed. It is anticipated that filling operations will run for another 6-12 months from July 1, 2005. In most other aspects, the demonstration is going well and hydrocarbon production has been stabilized at an average rate of 57 BOPD (July-Dec, 2005). Our industry partners continue to experiment with injection rates and pressures, various downhole and surface facility mechanical configurations, and the huff-n-puff technique to develop best practices for these types of enhanced recovery projects. Subsurface characterization was completed using well log tomography and 3D visualizations to map facies distributions and reservoir properties in the Belle River Mills, Chester 18, Dover 35, and Dover 36 Fields. The Belle River Mills and Chester 18 fields are being used as type-fields because they have excellent log and/or core data coverage. Amplitude slicing of the log porosity, normalized gamma ray, core permeability, and core porosity curves are showing trends that indicate significant heterogeneity and compartmentalization in these reservoirs associated with the original depositional fabric and pore types of the carbonate reservoir rocks. Accumulated pressure data supports the hypothesis of extreme heterogeneity in the Dover 35. Some intervals now have pressure readings over 2345 psig (April 29, 2005) in the A-1 Carbonate while nearby Niagaran Brown intervals only show 1030 psig (March 7, 2005). This is a pressure differential over 1300 psig and suggests significant vertical barriers in the reef, consistent with the GR tomography modeling. Digital and hard copy data have been compiled for the Niagaran reefs in the Michigan Basin, including a detailed summary of 20 fields in the vicinity of the demonstration well. Technology transfer took place through technical presentations regarding visualization of the reservoir heterogeneity in these Niagaran reefs. Oral presentations were given at two Petroleum Technology Transfer Council workshops, a Michigan Oil and Gas Association Conference, a Michigan Basin Geological Society meeting, and the Eastern American Association of Petroleum Geologist's Annual meeting. In addition, we met with our industry partners several times during the first half of 2005 to communicate and discuss the reservoir characterization and field site aspects of the demonstration project. A technical paper was published in the April 2005 issue of the AAPG Bulletin on the characterization of the Belle River Mills Field.

James R. Wood; W. quinlan; A. Wylie

2006-06-01T23:59:59.000Z

319

Grangemouth Advanced CO2 Capture Project GRACE | Open Energy...  

Open Energy Info (EERE)

GRACE is a project consortium that aims to develop cost improving technologies for carbon capture and separation. References: Grangemouth Advanced CO2 Capture Project...

320

Synthesis and CO2 Adsorption Properties of Molecularly Imprinted Adsorbents  

Science Journals Connector (OSTI)

Synthesis and CO2 Adsorption Properties of Molecularly Imprinted Adsorbents ... Adsorption Separation of Carbon Dioxide from Flue Gas by a Molecularly Imprinted Adsorbent ...

Yi Zhao; Yanmei Shen; Lu Bai; Rongjie Hao; Liyan Dong

2012-01-12T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Characterization New CO2 Laser Universidad del Valle Cali Colombia  

Science Journals Connector (OSTI)

The new CO2 laser constructed in Cali Colombia was characterized. Include power vs. pressure, for a constant voltage and constant pressure, spectrum visible for mixture, stability of...

Bedoya, Alvaro Casas; Goyes, Clara E; Garcia, Hans; Rodríguez, Efrain Solarte

322

Validation of CO2 line parameters used in temperature retrievals  

Science Journals Connector (OSTI)

A simultaneous retrieval procedure is utilized to investigate CO2 spectroscopic line parameters in order to reduce systematic errors in temperature retrievals. Provided are initial...

Shephard, Mark W; Clough, Shepard A; Delamere, Jennifer; Tobin, David C; Turner, David D; Revercomb, Hank E; Knuteson, Robert; Beer, Reinhard

323

CO2-SELECTIVE MEMBRANE FOR FUEL CELL APPLICATIONS.  

E-Print Network [OSTI]

??We have developed CO2-selective membranes to purified hydrogen and nitrogenfor fuel cell processes. Hydrogen purification impacts other industries such as ammoniaproduction and flue gas purification… (more)

El-Azzami, Louei Abdel Raouf

2006-01-01T23:59:59.000Z

324

Novel Processes for Power Plant with CO2 Capture.  

E-Print Network [OSTI]

?? The purpose of this thesis was to examine different technologies, which enhances the CO2 partial pressure in the flue gas from the natural gas… (more)

Ekre, Kjetil Vinjerui

2012-01-01T23:59:59.000Z

325

Technological Options for Reducing Non-CO2 GHG Emissions  

Science Journals Connector (OSTI)

A project titled Clearinghouse of Technological Options for Reducing Anthropogenic Non-CO 2 GHG Emissions from All Sectors was recently conducted. The o...

Prof. Dr. Jeff Kuo Ph.D.; P.E.

2012-01-01T23:59:59.000Z

326

Supercontinuum generation versus optical breakdown in CO2 gas  

Science Journals Connector (OSTI)

Threshold powers for optical breakdown (OB) and supercontinuum (SC) generation in high-pressure CO2 gas have been measured at different focusing conditions. It has been...

Ilkov, F A; Ilkova, L Sh; Chin, S L

1993-01-01T23:59:59.000Z

327

CO2ReMoVe - Progress Report  

E-Print Network [OSTI]

Seismic characterization of thin beds containing patchy carbon dioxide-brine .... different fluids involved in the CO2 sequestration procedure at variable formation

Danilo R. Velis

328

Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission...  

Broader source: Energy.gov (indexed) [DOE]

precipitation with spatial and temporal flow variations in CO2brinerock systems Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal Systems (EGS)...

329

International Symposium on Site Characterization for CO2 Geological Storage  

E-Print Network [OSTI]

EOR) and enhanced coalbed methane recovery (ECBMR) becauseand potential for coalbed methane. The Mannville coals areCO 2 injectivity and coalbed methane producibility. Thus,

Tsang, Chin-Fu

2006-01-01T23:59:59.000Z

330

Chemical Impact of Elevated CO2on Geothermal Energy Production  

Broader source: Energy.gov (indexed) [DOE]

Chemical Impact of Elevated CO 2 on Geothermal Energy Production Principal Investigator Susan Carroll Lawrence Livermore National Lab Track Name May 18-20, 2010 This presentation...

331

Influence of capillary pressure on CO2 storage and monitoring  

E-Print Network [OSTI]

solutions to mitigate the greenhouse effect. We are interested in analyzing the influence of capillary pressure on CO2 in- jection, storage and monitoring in saline ...

gabriela

332

Geothermal: Sponsored by OSTI -- Integrated, Geothermal-CO2 Storage...  

Office of Scientific and Technical Information (OSTI)

Integrated, Geothermal-CO2 Storage Reservoirs: Adaptable, Multi-Stage, Sustainable, Energy-Recovery Strategies that Reduce Carbon Intensity and Environmental Risk...

333

Quantitative Analysis of CO2 Mitigation in Thai Low Carbon Power Sector towards 2050  

Science Journals Connector (OSTI)

Abstract Recently, Low Carbon Society (LCS) principle has emerged as a practicable campaign for both developing and developed countries to deal with the dramatic increment of greenhouse gas concentration in the atmosphere. Various key features of LCS entail reducing energy demand and consumption while avoiding the fossil fuel utilization which is a major contributor to substantial CO2 emissions. In this study, Thailand's power sector is modeled using Asia-Pacific Integrated Model (AIM/Enduse). The objective of this study is to model the Thai power sector such that the viability of clean generating technologies for Thailand is considered and their mitigating effects are analyzed. The results demonstrate that the fossil fuel based technology would be replaced by clean technologies including, coal-fired power plant with CCS technology and renewable energies in the LCS scenario. The LCS scenario can mitigate CO2 emissions by 58,098 ktCO2 in 2050 when compared to BAU scenario.

P. Chunark; K. Promjiraprawat; P. Winyuchakrit; B. Limmeechokchai; T. Masui; T. Hanaoka; Y. Matsuoka

2014-01-01T23:59:59.000Z

334

Physical Constraints on Geologic CO2 Sequestration in Low-Volume Basalt Formations  

SciTech Connect (OSTI)

Deep basalt formations within large igneous provinces have been proposed as target reservoirs for carbon capture and sequestration on the basis of favorable CO2-water-rock reaction kinetics that suggest carbonate mineralization rates on the order of 102–103 d. Although these results are encouraging, there exists much uncertainty surrounding the influence of fracture-controlled reservoir heterogeneity on commercial-scale CO2 injections in basalt formations. This work investigates the physical response of a low-volume basalt reservoir to commercial-scale CO2 injections using a Monte Carlo numerical modeling experiment such that model variability is solely a function of spatially distributed reservoir heterogeneity. Fifty equally probable reservoirs are simulated using properties inferred from the deep eastern Snake River Plain aquifer in southeast Idaho, and CO2 injections are modeled within each reservoir for 20 yr at a constant mass rate of 21.6 kg s–1. Results from this work suggest that (1) formation injectivity is generally favorable, although injection pressures in excess of the fracture gradient were observed in 4% of the simulations; (2) for an extensional stress regime (as exists within the eastern Snake River Plain), shear failure is theoretically possible for optimally oriented fractures if Sh is less than or equal to 0.70SV; and (3) low-volume basalt reservoirs exhibit sufficient CO2 confinement potential over a 20 yr injection program to accommodate mineral trapping rates suggested in the literature.

Ryan M. Pollyea; Jerry P. Fairley; Robert K. Podgorney; Travis L. McLing

2014-03-01T23:59:59.000Z

335

Electricity generation from coal with CO2 capture by means of a novel power cycle  

SciTech Connect (OSTI)

Climate modelers have estimated that anthropogenic emissions of CO2 must be reduced substantially from the present rate to stabilize atmospheric concentration. To achieve this, electricity generation from fossil fuels with CO2 capture and direct sequestration may play an important role. If so, it will be worthwhile to consider power cycles that are designed to minimize atmospheric CO2 emissions and deliver CO2 ready for pipeline transport in addition to providing other desirable attributes of environmental performance and efficiency. One such novel approach, named the Matiant cycle, employs self generated CO2 as the working fluid with both Bryton and Rankine cycle turbines. Process modeling studies are being conducted at the NETL to investigate the promise of this cycle. In the work to be reported, synthesis gas is provided to the Matiant cycle by oxygen-blown dry coal entrained gasification. Oxygen for both the gasifier and the Matiant cycle is provided by use of an Ion Transport Membrane (ITM). ITM is a revolutionary approach for producing high purity oxygen from a high temperature pressurized air stream. ASPEC Plus is used as the simulation tool to compute energy balances and system performance. Two flowsheets are analyzed, the difference being the treatment of the low oxygen content raffinate stream from the ITM. Computed thermal efficiencies of the ITM/Matiant cycle are comparable to those of conventional IGCC without carbon capture. Specific carbon emissions per net MWh are many times lower for the new cycle than for other approaches being developed for power generation with CO2 capture, however. As much as 99.5% of the carbon in synthesis gas fed to the Matiant cycle could be recovered and removed in a pipeline as a high pressure liquid. Such high capture efficiencies at large central generating stations could allow use of fossil fuels without capture at smaller installations or by mobile sources, yielding a modest overall rate of CO2 emissions.

Ruether, J.; Le, P.; White, C.

2000-07-01T23:59:59.000Z

336

The Climate Impact of Past Changes in Halocarbons and CO2 in the Tropical UTLS Region  

Science Journals Connector (OSTI)

A chemistry–climate model coupled to an ocean model is used to compare the climate impact of past (1960–2010) changes in concentrations of halocarbons with those of CO2 in the tropical upper troposphere and lower stratosphere (UTLS). The ...

Charles McLandress; Theodore G. Shepherd; M. Catherine Reader; David A. Plummer; Keith P. Shine

2014-12-01T23:59:59.000Z

337

Synchronous records of pCO2 and D14 C suggest rapid, ocean-derived  

E-Print Network [OSTI]

with the GENIE Earth System Model. We suggest that sharp transitions of pCO2 may have remained undetected so far System Model a b s t r a c t Just before the onset of the Younger Dryas (YD) cold event, several stomatal climate change Stomatal proxy Radiocarbon Younger Dryas Lateglacial Ocean flushing event GENIE Earth

De Boer, Agatha M.

338

Optimale Energisystemer for LNG-anlegg med CO2-fangst; Optimal Energy Systems for LNG Plants with CO2 Capture.  

E-Print Network [OSTI]

?? Produksjon av LNG er en energikrevende prosess, spesielt på grunn av høyt kraftbehov for å gjøre naturgassen flytende. Utfordringer knyttet til utslipp av CO2… (more)

Bratseth, Arne

2008-01-01T23:59:59.000Z

339

Using of the tunable CO2-laser without frequency stabilization for diagnostics of CO2 gas mixture at barometric pressure  

Science Journals Connector (OSTI)

It is presented a technique for determining temperature and pressure of CO2 in gas mixture using absorption factor spectral distribution. Errors calculated for tunable frequency...

Arshinov, K

340

Geochemical evaluation of CO2 injection and containment in a depleted gas field  

Science Journals Connector (OSTI)

Abstract The short- and long-term geochemical impact of CO2 injection into a depleted gas reservoir (DGR) is investigated using reservoir/geochemical modeling with TOUGH2/TOUGHREACT and 1D kinetic diffusion modeling with PHREEQC (caprock/well-cement). Simulations of CO2 injection into the reservoir predict displacement and buoyancy of post-production CH4, as well as dry-out of the near-well zone. We computed that the areal extent of the CH4/brine dominated zone and the dry-out zone are relatively small compared to the CO2/brine dominated zone after well-closure. For the current DGR model we therefore conclude that it is reasonable to model geochemical reactions in the reservoir without taking into account post-production CH4. Although the CO2 dissolution capacity of the studied DGR is smaller compared to a deep saline aquifer of similar size, the modeling predicts that dissolution and subsequent CO2 mineral trapping proceed faster. Precipitation of dawsonite and magnesite were yet predicted at initial CO2 partial pressure (PCO2) of 9.3 bar, while these minerals were not identified in reservoir samples. This could indicate that their tendency of precipitation is overestimated by the model and hence the database used. This has significant impact on long-term modeled bulk porosity and PCO2. Simulations of CO2 diffusion through the caprock show that mineral reactions significantly retard the total dissolved carbon (TDC) plume. After 10,000 years, 99% of the TDC is present within the first 6.4 m above the reservoir contact. The progression of the TDC plume in the caprock is sensitive to the composition, kinetic rates, and surface area of primary and secondary minerals. Cement alteration modeling shows progressive carbonation of cement phases, resulting in three zones of distinct mineralogy and porosity. The three zones are predominantly characterized by: (i) unaltered cement, (ii) portlandite dissolution, and (iii) calcite precipitation. The simulated thickness of the affected zone is 3.8 cm after 100 years. This distance is sensitive to kinetic rate constants of C–S–H phases, but less sensitive to kinetic rate constant of portlandite. In summary, our applied methodology provides quantitative predictions of the geochemical impact of CO2 on the DGR storage complex. The methodology can be used for screening of potential DGR storage locations and to define criteria for minimal caprock and cement sheet thickness, for assuring short- and long-term integrity of the storage location.

Tim J. Tambach; Mariëlle Koenen; Laura J. Wasch; Frank van Bergen

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Spatial Disaggregation of CO2 Emissions for the State of California  

SciTech Connect (OSTI)

This report allocates California's 2004 statewide carbon dioxide (CO2) emissions from fuel combustion to the 58 counties in the state. The total emissions are allocated to counties using several different methods, based on the availability of data for each sector. Data on natural gas use in all sectors are available by county. Fuel consumption by power and combined heat and power generation plants is available for individual plants. Bottom-up models were used to distribute statewide fuel sales-based CO2 emissions by county for on-road vehicles, aircraft, and watercraft. All other sources of CO2 emissions were allocated to counties based on surrogates for activity. CO2 emissions by sector were estimated for each county, as well as for the South Coast Air Basin. It is important to note that emissions from some sources, notably electricity generation, were allocated to counties based on where the emissions were generated, rather than where the electricity was actually consumed. In addition, several sources of CO2 emissions, such as electricity generated in and imported from other states and international marine bunker fuels, were not included in the analysis. California Air Resource Board (CARB) does not include CO2 emissions from interstate and international air travel, in the official California greenhouse gas (GHG) inventory, so those emissions were allocated to counties for informational purposes only. Los Angeles County is responsible for by far the largest CO2 emissions from combustion in the state: 83 Million metric tonnes (Mt), or 24percent of total CO2 emissions in California, more than twice that of the next county (Kern, with 38 Mt, or 11percent of statewide emissions). The South Coast Air Basin accounts for 122 MtCO2, or 35percent of all emissions from fuel combustion in the state. The distribution of emissions by sector varies considerably by county, with on-road motor vehicles dominating most counties, but large stationary sources and rail travel dominating in other counties.The CO2 emissions data by county and source are available upon request.

de la Rue du Can, Stephane; de la Rue du Can, Stephane; Wenzel, Tom; Fischer, Marc

2008-06-11T23:59:59.000Z

342

NETL: IEP - Bench-Scale Silicone Process for Low-Cost CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Bench-Scale Silicone Process for Low-Cost CO2 Capture Bench-Scale Silicone Process for Low-Cost CO2 Capture Project No.: FE0007502 GE Global Research and their project partners are conducting research on the use of a novel silicone solvent to capture CO2 with a continuous bench-scale system. The project will utilize both computational and experimental methods. Previously measured experimental data from a continuous laboratory-scale CO2 capture system will be used to design this bench-scale system. Data from the bench-scale system, such as kinetics and mass transfer information, will be used to determine scale-up effects and needed design parameters to develop a scale-up strategy, update cost of electricity (COE) calculations and perform a technical and economic feasibility study. A manufacturing plan for the aminosilicone solvent and a price model will be used for optimization. The final objective of the program is to demonstrate, at the bench-scale, a process that achieves 90 percent CO2 capture efficiency with less than a 35 percent increase in the COE. Development of this scalable bench-scale process combined with a rigorous process model and thorough manufacturability analysis for the solvent, will enable a practical technology path to later development at larger scales and commercialization. The technology will eventually be retrofittable to coal-based power plants.

343

A Theoretical Study of CO2 Anions on Anatase (101) Surface. ...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Anions on Anatase (101) Surface. A Theoretical Study of CO2 Anions on Anatase (101) Surface. Abstract: Binding configurations of CO2 and CO2 - on perfect and oxygen-deficient...

344

Highlights of the 2009 SEG summer research workshop on "CO2 Sequestration Geophysics"  

E-Print Network [OSTI]

CO 2 saturation at the Weyburn CO 2 EOR injection project inMonitoring CO 2 storage during EOR at the Weyburn-Midalean excellent example of a CO 2 EOR (enhanced oil recovery)

Lumley, D.

2010-01-01T23:59:59.000Z

345

Single photon ionization of van der Waals clusters with a soft x-ray laser: ,,CO2...n and ,,CO2...n,,H2O...m  

E-Print Network [OSTI]

Single photon ionization of van der Waals clusters with a soft x-ray laser: ,,CO2...n and ,,CO2...n 2006; published online 20 October 2006 Pure neutral CO2 n clusters and mixed CO2 n H2O m clustersV. The distribution of pure CO2 n clusters decreases roughly exponentially with increasing cluster size. During

Rocca, Jorge J.

346

NETL: IEP – Post-Combustion CO2 Emissions Control - Carbon Dioxide Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbon Dioxide Capture by Absorption with Potassium Carbonate Carbon Dioxide Capture by Absorption with Potassium Carbonate Project No.: FC26-02NT41440 Pilot Plant at the University of Texas Pilot Plant at the University of Texas The University of Texas at Austin investigated an improved process for CO2 capture by alkanolamine absorption that uses an alternative solvent, aqueous potassium carbonate (K2CO3) promoted by piperazine (PZ). If successful, this process would use less energy for CO2 capture than the conventional monoethanolamine (MEA) scrubbing process. An improved capture system would mean a relative improvement in overall power plant efficiency. The project developed models to predict the performance of absorption/stripping of CO2 using the improved solvent and perform a pilot plant study to validate the process models and define the range of feasible

347

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate Fourth Quarterly Report 2006 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing% in the order: thiosulfatecarbonate is ineffective in the absence of oxygen

Rochelle, Gary T.

348

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate First Quarterly Report 2007 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing% to 160% in the order: thiosulfatecarbonate is ineffective

Rochelle, Gary T.

349

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network [OSTI]

CO2 Capture by Absorption with Potassium Carbonate Third Quarterly Report 2006 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing by Jou and Mather. Corrosion of carbon steel without inhibitors increases from 19 to 181 mpy in lean

Rochelle, Gary T.

350

Oxidation in Environments with Elevated CO2 Levels  

SciTech Connect (OSTI)

Efforts to reduce greenhouse gas emissions from fossil energy power productions focus primarily on either pre- or post-combustion removal of CO2. The research presented here examines corrosion and oxidation issues associated with two types of post-combustion CO2 removal processes—oxyfuel combustion in refit boilers and oxyfuel turbines.

Gordon H. Holcomb

2009-05-01T23:59:59.000Z

351

Chemical Impact of Elevated CO2on Geothermal Energy Production  

Broader source: Energy.gov [DOE]

This is a two phase project to assess the geochemical impact of CO2on geothermal energy production by: analyzing the geochemistry of existing geothermal fields with elevated natural CO2; measuring realistic rock-water rates for geothermal systems using laboratory and field-based experiments to simulate production scale impacts.

352

Implementation of the El Mar (Delaware) Unit CO2 flood  

SciTech Connect (OSTI)

Union Royalty, Inc., Amoco Production Company, and Enron Liquids Pipeline Company recently announced that they have commenced operations of an innovative enhanced oil recovery project at the El Mar (Delaware) Unit in Loving County, Texas, about 100 miles west of Midland, Texas. The project will convert the unit`s existing oil recovery system from a secondary (waterflood) system to a tertiary (CO2 flood) system designed to use carbon dioxide and water to increase crude oil production from the unit. What makes this EOR project unique is the creative deal structured by the partners involved. Amoco, Union Royalty, and Enron have worked out an unprecedented arrangement whereby Amoco essentially trades CO2 for an interest in Union Royalty`s future oil production from the unit. By pioneering this innovative deal new production life has been restored to a field that otherwise might dry up. Enron is participating in the project by transporting CO2 to the unit via a 40-mile expansion of its Central Basin Pipeline system from the Dollarhide oil field in Andrews county, Texas. The project will be implemented in four phases. The first phase in operation today comprises seven CO2 injection wells which have begun to process the reservoir with CO2. Plans now call for more CO2 injectors to be installed during the next three to five years until a total of 65 CO2 injectors and an on-site CO2 compression facility serve the unit`s 70 production wells.

McKnight, T.N. Jr. [Union Royalty, Inc., Midland, TX (United States); Merchant, D.L.

1995-12-31T23:59:59.000Z

353

Energy Resonances between Molecular Species in CO2 Gas Lasers  

Science Journals Connector (OSTI)

... to a, number of other close energy resonances which exist, between laser levels of CO2, and the diatomic and triatomic; species expected to be present in various discharges in ... the diatomic and triatomic; species expected to be present in various discharges in. which CO2 laser action has been achieved. ...

R. W. NICHOLLS

1970-04-25T23:59:59.000Z

354

THERMOCATALYTIC CO2-FREE PRODUCTION OF HYDROGEN FROM HYDROCARBON FUELS  

E-Print Network [OSTI]

THERMOCATALYTIC CO2- FREE PRODUCTION OF HYDROGEN FROM HYDROCARBON FUELS N. Muradov Florida Solar Energy Center 1679 Clearlake Road, Cocoa, Florida 32922 tel. 321-638-1448, fax. 321-638-1010, muradov (except for the start-up operation). This results in the following advantages: (1) no CO/CO2 byproducts

355

Energy solutions for CO2 emission peak and subsequent decline  

E-Print Network [OSTI]

Energy solutions for CO2 emission peak and subsequent decline Edited by Leif Sønderberg Petersen and Hans Larsen Risø-R-1712(EN) September 2009 Proceedings Risø International Energy Conference 2009 #12;Editors: Leif Sønderberg Petersen and Hans Larsen Title: Energy solutions for CO2 emission peak

356

Distribution of anthropogenic CO2 in the Pacific Ocean  

E-Print Network [OSTI]

Distribution of anthropogenic CO2 in the Pacific Ocean C. L. Sabine,1 R. A. Feely,2 R. M. Key,3 J] This work presents an estimate of anthropogenic CO2 in the Pacific Ocean based on measurements from the WOCE tracers; 9355 Information Related to Geographic Region: Pacific Ocean; KEYWORDS: Pacific Ocean

357

Falsification Of The Atmospheric CO2 Greenhouse Effects  

E-Print Network [OSTI]

Falsification Of The Atmospheric CO2 Greenhouse Effects Within The Frame Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3 Contents Abstract 2 1 Introduction 6 1.1 Problem background

Learned, John

358

3, 17631780, 2006 CO2-calcification  

E-Print Network [OSTI]

an ensemble of realizations of an Earth system model that encapsulates a comparable range of un- certainty

Boyer, Edmond

359

Potential Energy Savings and CO2 Emissions Reduction of China's Cement  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry Title Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry Publication Type Report Year of Publication 2012 Authors Ke, Jing, Nina Zheng, David Fridley, Lynn K. Price, and Nan Zhou Date Published 06/2012 Publisher Lawrence Berkeley National Laboratory Keywords cement industry, china energy, china energy group, emission reduction, energy analysis and environmental impacts department, energy efficiency, industrial energy efficiency, Low Emission & Efficient Industry, policy studies Abstract This study analyzes current energy and carbon dioxide (CO2) emission trends in China's cement industryas the basis for modeling different levels of cement production and rates of efficiency improvement andcarbon reduction in 2011-2030. Three cement output projections are developed based on analyses ofhistorical production and physical and macroeconomic drivers. For each of these three productionprojections, energy savings and CO2 emission reduction potentials are estimated in a best practicescenario and two continuous improvement scenarios relative to a frozen scenario. The results reveal thepotential for cumulative final energy savings of 27.1 to 37.5 exajoules and energy-related directemission reductions of 3.2 to 4.4 gigatonnes in 2011-2030 under the best practice scenarios. Thecontinuous improvement scenarios produce cumulative final energy savings of 6.0 to 18.9 exajoules andreduce CO2 emissions by 1.0 to 2.4 gigatonnes. This analysis highlights that increasing energy efficiencyis the most important policy measure for reducing the cement industry's energy and emissions intensity,given the current state of the industry and the unlikelihood of significant carbon capture and storagebefore 2030. In addition, policies to reduce total cement production offer the most direct way ofreducing total energy consumption and CO2 emissions.

360

Quantifying Regional Economic Impacts of CO2 Intensity Targets in China  

E-Print Network [OSTI]

To address rising energy use and CO2 emissions, China’s leadership has enacted energy and CO2 intensity

Zhang, Da

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

DOE Regional Partnership Successfully Demonstrates Terrestrial CO2 Storage  

Broader source: Energy.gov (indexed) [DOE]

Successfully Demonstrates Terrestrial CO2 Successfully Demonstrates Terrestrial CO2 Storage Practices in Great Plains Region of U.S. and Canada DOE Regional Partnership Successfully Demonstrates Terrestrial CO2 Storage Practices in Great Plains Region of U.S. and Canada August 19, 2010 - 1:00pm Addthis Washington, DC - A field test demonstrating the best approaches for terrestrial carbon dioxide (CO2) storage in the heartland of North America has been successfully completed by one of the U.S. Department of Energy's (DOE) seven Regional Carbon Sequestration Partnerships (RCSPs). The Plains CO2 Reduction (PCOR) Partnership , a collaboration of over 80 U.S. and Canadian stakeholders, conducted the field test at sites in the Prairie Pothole Region, extending from central Iowa into Northern Alberta,

362

North Korea Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Far East » North Korea Far East » North Korea North Korea Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends The total fossil-fuel CO2 emissions for North Korea, or the Democratic People's Republic of Korea, averaged 11.2% growth from 1950-93, reaching 71 million metric tons of carbon. Since 1993 according to published UN energy statistics, fossil-fuel CO2 emissions have declined 70% to 21.4 million metric tons of carbon. As the world's 14th largest producer of coal, it is no surprise North Korea's fossil-fuel CO2 emissions record is dominated by emissions from coal burning. Coal consumption accounted for 93% of the 2008 CO2 emission total. With no natural gas usage, another 3.4% currently comes from liquid petroleum consumption, and the remainder is from cement

363

Super Building Insulation by CO2 Foaming Process Research Project |  

Broader source: Energy.gov (indexed) [DOE]

Emerging Technologies » Super Building Insulation by CO2 Foaming Emerging Technologies » Super Building Insulation by CO2 Foaming Process Research Project Super Building Insulation by CO2 Foaming Process Research Project The Department of Energy is currently researching the development of building superinsulation through a carbon dioxide (CO2) foaming process. Project Description This project seeks to develop building super insulation through a carbon dioxide foaming process that does not use hydrofluorocarbons (HFCs), and which produces insulation with a high R-value. Project Partners Research is being undertaken between the Department of Energy and The Industrial Science & Technology Network. Project Goals The goal of this project is to develop advanced insulation without HFC, and to achieve a competitive processing cost for CO2 foaming technology.

364

South Korea Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Far East » South Korea Far East » South Korea South Korea Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends South Korea, or the Republic of Korea, is the world's tenth largest emitter of CO2 based on 2008 fossil-fuel consumption and cement production with 139 million metric tons of carbon. From 1946-1997 South Korea experienced phenomenal growth in fossil-fuel CO2 emissions with a growth rate that averaged 11.5%. Initial growth in emissions was due to coal consumption, which still accounts for 46.9% of South Korea's fossil-fuel CO2 emissions. Since the late 1960s oil consumption has been a major source of emissions. South Korea is the world's fifth largest importer of crude oil. Natural gas became a significant source of CO2 for the first time in 1987, as South

365

CO2 Injection in Kansas Oilfield Could Greatly Increase Production,  

Broader source: Energy.gov (indexed) [DOE]

CO2 Injection in Kansas Oilfield Could Greatly Increase Production, CO2 Injection in Kansas Oilfield Could Greatly Increase Production, Permanently Store Carbon Dioxide, DOE Study Says CO2 Injection in Kansas Oilfield Could Greatly Increase Production, Permanently Store Carbon Dioxide, DOE Study Says August 31, 2011 - 1:00pm Addthis Washington, DC - The feasibility of using carbon dioxide (CO2) injection for recovering between 250 million and 500 million additional barrels of oil from Kansas oilfields has been established in a study funded by the U.S. Department of Energy (DOE). The University of Kansas Center for Research studied the possibility of near-miscible CO2 flooding for extending the life of mature oilfields in the Arbuckle Formation while simultaneously providing permanent geologic storage of carbon dioxide, a major greenhouse gas.

366

Geological Sequestration of CO2: The GEO-SEQ Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GeoloGical SequeStration of co GeoloGical SequeStration of co 2 : the Geo-Seq Project Background Growing concern over the potential adverse effects of carbon dioxide (CO 2 ) buildup in the atmosphere leading to global climate change may require reductions in carbon emissions from industrial, transportation, and other sources. One promising option is the capture of CO 2 from large point sources and subsequent sequestration in geologic formations. For this approach to achieve wide acceptance, t assurances that safe, permanent, and verifiable CO 2 geologic storage is attained during sequestration operations must be made. Project results are made available to potential CO 2 storage operators and other interested stakeholders. The primary performing organizations of the GEO-SEQ project team are Lawrence

367

NETL: Low-Pressure Membrane Contactors for CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Low-Pressure Membrane Contactors for CO2 Capture Low-Pressure Membrane Contactors for CO2 Capture Project No.: DE-FE0007553 Membrane Technology and Research, Inc. (MTR) is developing a new type of membrane contactor (or mega-module) to separate carbon dioxide (CO2) from power plant flue gas. This module's membrane area is 500 square meters, 20 to 25 times larger than that of current modules used for CO2 capture. A 500-MWe coal power plant requires 0.5 to 1 million square meters of membrane to achieve 90 percent CO2 capture. The new mega-modules can drastically reduce the cost, complexity, and footprint of commercial-scale membrane module integration. Energy savings due to low-pressure drops for gases circulated through the modules, as well as improved countercurrent flow, are additional benefits. The feasibility of using mega-modules in several different hybrid process designs is being evaluated for future development potential.

368

CO2 Geologic Storage (Kentucky) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

CO2 Geologic Storage (Kentucky) CO2 Geologic Storage (Kentucky) CO2 Geologic Storage (Kentucky) < Back Eligibility Industrial Program Info State Kentucky Program Type Industry Recruitment/Support Provider Consultant, Division of Carbon Management Division staff, in partnership with the Kentucky Geological Survey (KGS), continued to support projects to investigate and demonstrate the technical feasibility of geologic storage of carbon dioxide (CO2) in Kentucky. In 2012, KGS conducted a test of carbon dioxide enhanced natural gas recovery in the Devonian Ohio Shale, Johnson County, east Kentucky. During the test, 87 tons of CO2 were injected through perforations in a cased, shut-in shale gas well. Industry partners for this research included Crossrock Drilling, Advanced Resources International, Schlumberger, Ferus Industries, and

369

Definition: Reduced Co2 Emissions | Open Energy Information  

Open Energy Info (EERE)

Co2 Emissions Co2 Emissions Jump to: navigation, search Dictionary.png Reduced Co2 Emissions Functions that provide this benefit can lead to avoided vehicle miles, decrease the amount of central generation needed to their serve load (through reduced electricity consumption, reduced electricity losses, more optimal generation dispatch), and or reduce peak generation. These impacts translate into a reduction in CO2 emissions produced by fossil-based electricity generators and vehicles.[1] Related Terms electricity generation, reduced electricity losses, smart grid References ↑ SmartGrid.gov 'Description of Benefits' An in LikeLike UnlikeLike You like this.Sign Up to see what your friends like. line Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Reduced_Co2_Emissions&oldid=502618

370

INTERNATIONAL COLLABORATION ON CO2 SEQUESTRATION  

SciTech Connect (OSTI)

The primary focus of this reporting period was to prepare for conducting the ocean carbon sequestration field experiment during the summer of 2002. We discuss four key aspects of this preparation: (1) Design criteria for a CO{sub 2} flow system mounted on a ship; (2) Inter-model comparison of plume models; (3) Application of a double plume model to compute near field mixing; and (4) Evaluation of tracers.

Howard J. Herzog; E. Eric Adams

2002-09-01T23:59:59.000Z

371

CP VIOLATION IN KS 3 Written 1996 by T. Nakada (Paul Scherrer Institute) and  

E-Print Network [OSTI]

­ 1­ CP VIOLATION IN KS 3 Written 1996 by T. Nakada (Paul Scherrer Institute) and L. Wolfenstein, and 3. The I = 0 and I = 2 states have CP = +1 and KS can decay into them without violating CP symmetry no centrifugal barrier, have CP = -1 so that the KS decay to these requires CP violation. In order to see CP

372

Performance Analysis of a Transcritical CO2 Heat Pump Water Heater Incorporating a Brazed-Plate Gas-cooler.  

E-Print Network [OSTI]

??This study focuses on the experimental testing and numerical modeling of a 4.5 kW transcritical CO2 heat pump water heater at Queen’s University in the… (more)

Murray, PORTIA

2015-01-01T23:59:59.000Z

373

Gas-phase H2O and CO2 toward massive protostars  

E-Print Network [OSTI]

We present a study of gas-phase H2O and CO2 toward a sample of 14 massive protostars with the Short Wavelength Spectrometer (SWS) on board the Infrared Space Observatory (ISO). Modeling of the H2O spectra using a homogeneous model with a constant excitation temperature T_ex shows that the H2O abundances increase with temperature, up to a few times 10^-5 with respect to H2 for the hottest sources (T_ex ~500 K). This is still a factor of 10 lower than the H2O ice abundances observed toward cold sources in which evaporation is not significant (Keane et al. 2001). Gas-phase CO2 is not abundant in our sources. The abundances are nearly constant for T_ex>~100 K at a value of a few times 10^-7, much lower than the solid-state abundances of ~1--3 times 10^-6 (Gerakines et al. 1999). For both H2O and CO2 the gas/solid ratio increases with temperature, but the increase is much stronger for H2O than for CO2, suggesting a different type of chemistry. In addition to the homogeneous models, a power law model has been developed for one of our sources, based on the physical structure of this region as determined from submillimeter data by van der Tak et al. (1999). The resulting H2O model spectrum gives a good fit to the data.

A. M. S. Boonman; E. F. van Dishoeck; F. Lahuis; C. M. Wright; S. D. Doty

2001-05-15T23:59:59.000Z

374

Investigations of supercritical CO2 Rankine cycles for geothermal power plants  

SciTech Connect (OSTI)

Supercritical CO2 Rankine cycles are investigated for geothermal power plants. The system of equations that describe the thermodynamic cycle is solved using a Newton-Rhapson method. This approach allows a high computational efficiency of the model when thermophysical properties of the working fluid depend strongly on the temperature and pressure. Numerical simulation results are presented for different cycle configurations in order to assess the influences of heat source temperature, waste heat rejection temperatures and internal heat exchanger design on cycle efficiency. The results show that thermodynamic cycle efficiencies above 10% can be attained with the supercritical brayton cycle while lower efficiencies can be attained with the transcritical CO2 Rankine cycle.

Sabau, Adrian S [ORNL; Yin, Hebi [ORNL; Qualls, A L [ORNL; McFarlane, Joanna [ORNL

2011-01-01T23:59:59.000Z

375

Hybrid heat exchange for the compression capture of CO2 from recirculated flue gas  

SciTech Connect (OSTI)

An approach proposed for removal of CO2 from flue gas cools and compresses a portion of a recirculated flue-gas stream, condensing its volatile materials for capture. Recirculating the flue gas concentrates SOx, H2O and CO2 while dramatically reducing N2 and NOx, enabling this approach, which uses readily available industrial components. A hybrid system of indirect and direct-contact heat exchange performs heat and mass transfer for pollutant removal and energy recovery. Computer modeling and experimentation combine to investigate the thermodynamics, heat and mass transfer, chemistry and engineering design of this integrated pollutant removal (IPR) system.

Oryshchyn, Danylo B.; Ochs, Thomas L.; Summers, Cathy A.

2004-01-01T23:59:59.000Z

376

NETL: Evaluation of Dry Sorbent Technology for Pre-Combustion CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluation of Dry Sorbent Technology for Pre-Combustion CO2 Capture Evaluation of Dry Sorbent Technology for Pre-Combustion CO2 Capture Project No.: DE-FE0000465 Scanning Electron Microsopy (SEM) and Transmission Electron Miscroscopy (TEM) images of a multi-functional sorbent synthesized by a novel method. Scanning Electron Microsopy (SEM) and Transmission Electron Miscroscopy (TEM) images of a multi-functional sorbent synthesized by a novel method. URS and the University of Illinois at Urbana-Champaign are investigating a dry sorbent process configured to combine the water-gas-shift (WGS) reaction with carbon dioxide (CO2) removal for coal gasification systems. A combination of process simulation modeling and sorbent molecular and thermodynamic analyses will be performed to predict optimal sorbent properties and identify optimal operating temperature and pressure ranges

377

NETL: IEP - Post-Combustion CO2 Emissions Control - Hybrid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hybrid Membrane/Absorption Process for Post-Combustion CO2 Capture Hybrid Membrane/Absorption Process for Post-Combustion CO2 Capture Project No.: DE-FE0004787 Gas Technology Institute is partnering with PoroGen Corporation and Aker Process Systems in a three-year effort to develop a hybrid technology for CO2 capture from flue gases based on a combination of solvent absorption and hollow fiber membrane technologies. The technology could also apply to removal of numerous other gas pollutants such as NOx and SOx, separation of CO2 from hydrogen in refinery streams, and separation of CO2 from natural gas (natural gas sweetening). The technology increases interfacial gas/liquid area by a factor of ten over conventional packed or tray columns, thus increasing mass transfer. The selectivity is controlled by the chemical affinity of CO2 with a hindered amine. The process results in lower steam regeneration energy, and the CO2 is generated at pressure, reducing compression costs. The project includes bench-scale testing on a 25 kWe-equivalent slipstream at Midwest Generation's Joliet Power Station.

378

Combustion-Assisted CO2 Capture Using MECC Membranes  

SciTech Connect (OSTI)

Mixed Electron and Carbonate ion Conductor (MECC) membranes have been proposed as a means to separate CO2 from power plant flue gas. Here a modified MECC CO2 capture process is analyzed that supplements retentate pressurization and permeate evacuation as a means to create a CO2 driving force with a process assisted by the catalytic combustion of syngas on the permeate side of the membrane. The combustion reactions consume transported oxygen, making it unavailable for the backwards transport reaction. With this change, the MECC capture system becomes exothermic, and steam for electricity production may be generated from the waste heat. Greater than 90% of the CO2 in the flue gas may be captured, and a compressed CO2 product stream is produced. A fossil-fueled power plant using this process would consume 14% more fuel per unit electricity produced than a power plant with no CO2 capture system, and has the potential to meet U.S. DOE s goal that deployment of a CO2 capture system at a fossil-fueled power plant should not increase the cost of electricity from the combined facility by more than 30%.

Sherman, Steven R [ORNL; Gray, Dr. Joshua R. [Savannah River National Laboratory (SRNL), Aiken, S.C.; Brinkman, Dr. Kyle S. [Savannah River National Laboratory (SRNL), Aiken, S.C.; Huang, Dr. Kevin [University of South Carolina, Columbia

2012-01-01T23:59:59.000Z

379

Integrated Energy System with Beneficial Carbon Dioxide (CO2) Use  

SciTech Connect (OSTI)

To address the public concerns regarding the consequences of climate change from anthropogenic carbon dioxide (CO2) emissions, the U.S. Department of Energy National Energy Technology Laboratory (DOE-NETL) is actively funding a CO2 management program to develop technologies capable of reducing the CO2 emissions from fossil fuel power plants and other industrial facilities. Over the past decade, this program has focused on reducing the costs of carbon capture and storage technologies. Recently, DOE-NETL launched an alternative CO2 mitigation program focusing on beneficial CO2 reuse and supporting the development of technologies that mitigate emissions by converting CO2 to solid mineral form that can be utilized for enhanced oil recovery, in the manufacturing of concrete or as a benign landfill, in the production of valuable chemicals and/or fuels. This project was selected as a CO2 reuse activity which would conduct research and development (R&D) at the pilot scale via a cost-shared Cooperative Agreement number DE-FE0001099 with DOE-NETL and would utilize funds setaside by the American Recovery and Reinvestment Act (ARRA) of 2009 for Industrial Carbon Capture and Sequestration R&D,

Sun, Xiaolei; Rink, Nancy

2011-04-30T23:59:59.000Z

380

Evaluating impacts of CO2 gas intrusion into a confined sandstone aquifer: Experimental results  

SciTech Connect (OSTI)

Deep subsurface storage and sequestration of CO2 has been identified as a potential mitigation technique for rising atmospheric CO2 concentrations. Sequestered CO2 represents a potential risk to overlying aquifers if the CO2 leaks from the deep storage reservoir. Experimental and modeling work is required to evaluate potential risks to groundwater quality and develop a systematic understanding of how CO2 leakage may cause important changes in aquifer chemistry and mineralogy by promoting dissolution/precipitation, adsorption/desorption, and redox reactions. Sediments from the High Plains aquifer in Kansas, United States, were used in this investigation, which is part of the National Risk Assessment Partnership Program sponsored by the US Department of Energy. This aquifer was selected to be representative of consolidated sand and gravel/sandstone aquifers overlying potential CO2 sequestration repositories within the continental US. In this paper, we present results from batch experiments conducted at room temperature and atmospheric pressure with four High Plains aquifer sediments. Batch experiments simulate sudden, fast, and short-lived releases of the CO2 gas as would occur in the case of well failure during injection. Time-dependent release of major, minor, and trace elements were determined by analyzing the contacting solutions. Characterization studies demonstrated that the High Plains aquifer sediments were abundant in quartz and feldspars, and contained about 15 to 20 wt% montmorillonite and up to 5 wt% micas. Some of the High Plains aquifer sediments contained no calcite, while others had up to about 7 wt% calcite. The strong acid extraction tests confirmed that in addition to the usual elements present in most soils, rocks, and sediments, the High Plains aquifer sediments had appreciable amounts of As, Cd, Pb, Cu, and occasionally Zn, which potentially may be mobilized from the solid to the aqueous phase during or after exposure to CO2. However, the results from the batch experiments showed that the High Plains sediments mobilized only low concentrations of trace elements (potential contaminants), which were detected occasionally in the aqueous phase during these experiments. Importantly, these occurrences were more frequent in the calcite-free sediment. Results from these investigations provide useful information to support site selection, risk assessment, and public education efforts associated with geological CO2 storage and sequestration.

Qafoku, Nikolla; Lawter, Amanda R.; Shao, Hongbo; Wang, Guohui; Brown, Christopher F.

2014-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Partial Gasification for CO2Emissions Reduction  

Science Journals Connector (OSTI)

The chemical reaction during partial gasification of coal follows the form (Nag and Raha, 1994) which is based on the Amagat model for ideal gas mixtures: (9.1) ...

Nirmal V. Gnanapragasam; Bale V. Reddy; Marc A. Rosen

2010-01-01T23:59:59.000Z

382

Supercritical CO2 core flooding and imbibition in Berea sandstone — CT imaging and numerical simulation  

Science Journals Connector (OSTI)

This paper reports a numerical simulation study of a full CO2 core flooding and imbibition cycle on a Berea sandstone core (measured 14.45 cm long and 3.67 cm in diameter). During the test, supercritical CO2 (at 10 MPa and 40 °C) and CO2-saturated brine was injected into one end of the horizontal core and a X-ray CT scanner (with a resolution of 0.35 mm × 0.35 mm) was employed to monitor and record changes in the fluid saturations, which enabled 3D mapping of the saturation profiles throughout the core during the course of core flooding test. From the digital CT saturation data, mean saturation profiles along the core length were plotted with time. A 1D model of the core was constructed to simulate the core flooding test and attempt was made to history match core test results, particularly the evolution of the mean CO2 saturation profiles during CO2 injection. Curve-fitting of the centrifugal air-water capillary pressure data (drainage) for the Berea core showed that the core test data could be adequately described by the Van Genuchten equation. The matched set of parameters ( S l r , P 0 , m ) were 0.09, 20 KPa, 0.425 respectively. In the absence of the relative permeability for the Berea core, it was decided to use the parameters obtained from matching the air-water capillary pressure data as a first approximation for the CO2-brine system in the model.

Ji-Quan Shi; Ziqiu Xue; Sevket Durucan

2011-01-01T23:59:59.000Z

383

Fuel Chemistry Division Preprints 2001, 46(1), 217 CO2 ADSORPTION ON CARBONACEOUS SURFACES  

E-Print Network [OSTI]

on cellulose char. In order to compare the theoretical data of CO2 adsorption energy on carbon models, we have for Theoretical Chemistry, Dept. of Chemistry University of Utah, 315 South 1400 East, Room 2020 Salt Lake City the volumetric technique and it is compared to the theoretical prediction. Such comparison allows us to elucidate

Truong, Thanh N.

384

Argonne Coal Structure Rearrangement Caused by Sorption of CO2  

Science Journals Connector (OSTI)

Argonne Coal Structure Rearrangement Caused by Sorption of CO2 ... The sorption of CO2 on seven Argonne premium coals was measured by using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy as a function of time at constant CO2 pressure (0.62 MPa) and temperature (55 °C). ... The following seven Argonne premium coals were investigated:? Upper Freeport (medium volatile bituminous), Pittsburgh No. 8 (high volatile bituminous), Lewiston?Stockton (high volatile bituminous), Blind Canyon (high volatile bituminous), Illinois No. 6 (high volatile bituminous), Wyodak (sub-bituminous), and Beulah Zap (lignite). ...

A. L. Goodman; R. N. Favors; John W. Larsen

2006-10-05T23:59:59.000Z

385

CO2 Geologic Storage (Kentucky) | Open Energy Information  

Open Energy Info (EERE)

CO2 Geologic Storage (Kentucky) CO2 Geologic Storage (Kentucky) No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Last modified on February 12, 2013. EZFeed Policy Place Kentucky Name CO2 Geologic Storage (Kentucky) Policy Category Other Policy Policy Type Industry Recruitment/Support , Technical Feasibility Projects Affected Technologies Coal with CCS Active Policy Yes Implementing Sector State/Province Program Administrator Brandon Nutall, Division of Carbon Management Primary Website http://energy.ky.gov/carbon/Pages/default.aspx Summary Division staff, in partnership with the Kentucky Geological Survey (KGS), continued to support projects to investigate and demonstrate the technical feasibility of geologic storage of carbon dioxide (CO2) in Kentucky. In

386

CO2 Separation from Low-Temperature Flue Gases  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

partners interested in implementing United States Patent Number 7,842,126 entitled "Co 2 Separation from Low-Temperature Flue Gases." Disclosed in this patent are novel methods for processing carbon dioxide (CO 2 ) from combustion gas streams. Researchers at NETL are focused on the development of novel sorbent systems that can effectively remove CO 2 and other gases in an economically feasible manner with limited impact on energy production cost. The current invention will help in reducing greenhouse gas emissions by using an improved, regenerable aqueous amine and soluble potassium carbonate sorbent system. This novel solvent system may be capable of achieving CO 2 capture from larger emission streams at lower overall cost. Overview Sequestration of CO

387

CO2 Injection Begins in Illinois | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Begins in Illinois Begins in Illinois CO2 Injection Begins in Illinois November 17, 2011 - 12:00pm Addthis Washington, DC - The Midwest Geological Sequestration Consortium (MGSC), one of seven regional partnerships created by the U.S. Department of Energy (DOE) to advance carbon storage technologies nationwide, has begun injecting carbon dioxide (CO2) for their large-scale CO2 injection test in Decatur, Illinois. The test is part of the development phase of the Regional Carbon Sequestration Partnerships program, an Office of Fossil Energy initiative launched in 2003 to determine the best approaches for capturing and permanently storing gases that can contribute to global climate change. "Establishing long-term, environmentally safe and secure underground CO2 storage is a critical component in achieving successful commercial

388

CO2 Storage and Sink Enhancements: Developing Comparable Economics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Storage and Sink Enhancements: Storage and Sink Enhancements: Developing Comparable Economics Richard G. Rhudy (rrhudy@epri.com; 650-855-2421) Electric Power Research Institute P.O. Box 10412 Palo Alto, CA 94303-0813 Bert R. Bock (brbock@tva.gov; 256-386-3095) David E. Nichols (denichols@tva.gov; 256-386-2489) Tennessee Valley Authority P.O. Box 1010 Muscle Shoals, AL 35662-1010 Abstract One of the major difficulties in evaluating CO 2 sequestration technologies and practices, both geologic storage of captured CO 2 and storage in biological sinks, is obtaining consistent, transparent, accurate, and comparable economics. This paper reports on a project that compares the economics of major technologies and practices under development for CO 2 sequestration, including captured CO 2 storage options, such as active oil reservoirs, depleted oil and gas

389

Italy (including San Marino) Fossil-Fuel CO2 Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Western Europe » Italy Western Europe » Italy (including San Marino) Italy (including San Marino) Fossil-Fuel CO2 Emissions Graph graphic Graphics Data graphic Data Trends As occurred in many industrialized nations, CO2 emissions from Italy rose steeply since the late 1940's until the growth was abruptly terminated in 1974. Since 1974, emissions from liquid fuels have vacillated, dropping from 76% to 46% of a static but varying total. Significant increases in natural gas consumption have compensated for the drop in oil consumption. In 2008, 35.8% of Italy's fossil-fuel CO2 emissions were due to natural gas consumption. Coal usage grew steadily until 1985 when CO2 emissions from coal consumption reached 16 million metric tons of carbon. Not until 2004 did coal usage exceed 1985 levels and now accounts for 13.9% of Italy's

390

NETL: Alstom's Chemical Looping Combustion Technology with CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxy-Combustion CO2 Emissions Control Oxy-Combustion CO2 Emissions Control Commercialization of the Iron Based Coal Direct Chemical Looping Process for Power Production with in situ CO2 Capture Project No.: DE-FE0009761 CDLC Process Concept CDLC Process Concept (click to enlarge) Babcock & Wilcox Power Generation Group (B&W) is developing the coal direct chemical looping (CDCL) process. The CDCL process consists of a unique moving bed reactor - the reducer - where pulverized coal is fully converted using iron-based oxygen carriers. The oxygen carrier is reduced from Fe2O3 to FeO/Fe and the flue gas is a concentrated stream of CO2 that is available for storage or beneficial use. The reduced FeO/Fe is oxidized to Fe2O3 using air in the combustor, liberating heat to produce steam for a

391

Kyoto-Related Fossil-Fuel CO2 Emission Totals  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Kyoto-Related Emissions Kyoto-Related Emissions Kyoto-Related Fossil-Fuel CO2 Emission Totals DOI: 10.3334/CDIAC/ffe.007_V2012 world map Kyoto-Related Fossil-Fuel CO2 Emission Totals Year Annex B Countries Non Annex B Countries Fossil-Fuel CO2 Emissions (million metric tonnes C) Bunkers (million metric tonnes C) Fossil-Fuel CO2 Emissions (million metric tonnes C) Bunkers (million metric tonnes C) 1990 3894 90 2111 46 1991 3801 94 2299 38 1992 3750 109 2263 44 1993 3685 107 2339 48 1994 3656 107 2469 54 1995 3681 110 2570 59 1996 3704 111 2657 72 1997 3727 114 2737 74 1998 3746 118 2698 82 1999 3678 124 2718 90 2000 3725 130 2821 90 2001 3781 120 2936 92 2002 3764 128 3013 94 2003 3853 123 3347 98 2004 3888 135 3683 107 2005 3933 142 3926 106

392

Direct Solar Energy Conversion by the Reduction of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Direct Solar Energy Conversion by the Reduction of CO2 Direct Solar Energy Conversion by the Reduction of CO2 Speaker(s): Reed Jensen Date: August 25, 2005 - 12:00pm Location: Bldg. 90 Reed Jensen has successfully demonstrated the direct solar reduction of CO2 to CO and O2 using a solar concentrator dish and ceramic converter that grew out of his work at Los Alamos National Laboratory. He will discuss the thermochemical, kinetic and spectral properties of the CO2 /CO/ O2 system that enable this process and how the CO is subsequently converted to useful fuels by a range of catalytic processes. He will also discuss the technical difficulties associated with the design, construction and operation of a multi-component optical system that must operate at high temperatures. Results from a prototype system will be discussed defining the efficiencies

393

ARM - Field Campaign - Boundary Layer CO2 Using CW Lidar  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsBoundary Layer CO2 Using CW Lidar govCampaignsBoundary Layer CO2 Using CW Lidar Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Boundary Layer CO2 Using CW Lidar 2005.05.21 - 2005.05.24 Lead Scientist : Michael Dobbs Description Overflights Underway at ACRF Southern Great Plains Site (M.Dobbs/J.Liljegren) Science collaborators at ITT Industries and the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) conducted flights over the Central Facility at ACRF's Southern Great Plains (SGP) site as part of the Climate Sources and Sink (CO2) Intensive Operational Period (IOP), using a CW lidar. The objective of the flights was to validate, by demonstration and comparison with SGP ground observations, the performance of the ITT system when used in conjunction with retrieval

394

Coal-CO2 Slurry Feeding System for Pressurized Gasifiers  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Feed Systems Feed Systems Coal-CO2 Slurry Feeding System for Pressurized Gasifiers Massachusetts Institute of Technology Project Number: FE0012500 Project Description This project will develop and assess a slurry feeding system based on a suspension of coal in liquid CO2 that can be pumped into a high-pressure gasifier. The advantages of this solution are that CO2 has a low heat capacity, a low heat of vaporization and low viscosity. Thus, the liquid CO2 imposes a much smaller thermal load on the gasifier relative to a water slurry, and has the potential to improve the efficiency and economics of integrated gasification combined cycle (IGCC) power plants with carbon capture and dramatically reduce greenhouse gas emissions from coal fired power plants. Project Details

395

The Role of CO2 Reduction Catalysis in Carbon Capture  

Science Journals Connector (OSTI)

In addition to the algae-mediated process discussed in Chap. 7, to generate hydrocarbon-based fuels and useful chemicals from CO2, it is also possible to use electrochemical and photocatalytic processes to carry ...

Prof. Jennifer Wilcox

2012-01-01T23:59:59.000Z

396

Carbon Capture and a Commercial Market for CO2  

Science Journals Connector (OSTI)

With increasing evidence that the earth is warming at a faster rate than previously expected, there is pressure to reduce carbon dioxide (CO2) emissions on a large scale. Because carbon capture helps to internali...

Thomas R. Sadler

2013-05-01T23:59:59.000Z

397

electroseismic monitoring of co2 sequestration: a finite element ...  

E-Print Network [OSTI]

The injection of large amounts of man-produced CO2 in depleted oil wells below ..... [7] SANTOS, J. E., Global and domain-decomposed mixed methods for the ...

Fabio Zyserman

398

co2-use-reuse | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

under certain conditions that do not necessarily require intensive energy input. Using CO2 as a feedstock for a variety of products is a promising research area, particularly in...

399

Split system CO2 heat pump water heaters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Split-system-CO2-heat-pump-water-heaters- Sign In About | Careers | Contact | Investors | bpa.gov Search Policy & Reporting Expand Policy & Reporting EE Sectors Expand EE...

400

Novel CO2-Thickeners for Improved Mobility Control  

SciTech Connect (OSTI)

The objective of this contract was to design, synthesize, and characterize thickening agents for dense carbon dioxide and to evaluate their solubility and viscosity-enhancing potential in CO2.

Enick, Dr. Robert M.; Beckman, Dr. Eric J.; Hamilton, Dr. Andrew

2002-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Hierarchically Porous Aminosilica Monolith as a CO2 Adsorbent  

Science Journals Connector (OSTI)

Danon, A.; Stair, P. C.; Weitz, E.FTIR Study of CO2 Adsorption on Amine-Grafted SBA-15: Elucidation of Adsorbed Species J. Phys. ... Danon, Alon; Stair, Peter C.; Weitz, Eric ...

Young Gun Ko; Hyun Jeong Lee; Jae Yong Kim; Ung Su Choi

2014-07-07T23:59:59.000Z

402

Satellite vibration measurements with an autodyne CO2 laser radar  

Science Journals Connector (OSTI)

Vibration signatures of the Low Power Atmospheric Compensation Experiment satellite were obtained with a ground-based CO2 laser radar. The laser radar operated in a cw mode...

Schultz, K I; Kocher, D G; Daley, J A; Theriault, J R; Spinks, J; Fisher, S

1994-01-01T23:59:59.000Z

403

From CO2 to Methanol via Novel Nanocatalysts  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

have found novel nanocatalysts that lower the barrier to converting carbon dioxide (CO2)-an abundant greenhouse gas-into methanol (CH3OH)-a key commodity used to produce...

404

Magnetic behaviour of synthetic Co2SiO4  

Science Journals Connector (OSTI)

The magnetic structure of the synthetic cobalt olivine, Co2SiO4, is determined by means of non-polarized and polarized neutron diffraction on single-crystal and powder samples.

Sazonov, A.

2009-11-16T23:59:59.000Z

405

Synthetic fuel concept to steal CO2 from air  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to steal CO2 from air Lab has developed a low-risk, transformational concept, called Green Freedom(tm), for large-scale production of carbon-neutral, sulfur-free fuels and...

406

LED-based CO2 Sensor for Balloon Deployment  

Science Journals Connector (OSTI)

We are developing a sensor for monitoring ambient CO2 from unmanned aircraft and balloons. The sensor consists of a mid-IR LED coupled with a high dynamic range gated integrator. The...

Sonnenfroh, David; Parameswaran, Krishnan

407

Improving CO2 Efficiency for Recovering Oil in Heterogeneous Reservoirs  

SciTech Connect (OSTI)

The work strived to improve industry understanding of CO2 flooding mechanisms with the ultimate goal of economically recovering more of the U.S. oil reserves. The principle interests are in the related fields of mobility control and injectivity.

Grigg, Reid B.; Svec, Robert K.

2003-03-10T23:59:59.000Z

408

International Symposium on Site Characterization for CO2 Geological Storage  

E-Print Network [OSTI]

FEASIBILITY: TEAPOT DOME EOR PILOT L. Chiaramonte, M.TO IDENTIFY OPTIMAL CO 2 EOR STORAGE SITES V. Núñez Lopez,from a carbon dioxide EOR/sequestration project. Energy

Tsang, Chin-Fu

2006-01-01T23:59:59.000Z

409

Near Miscible CO2 Application to Improve Oil Recovery  

E-Print Network [OSTI]

...................................................................................................................... XIV 1 INTRODUCTION AND LITERATURE REVIEW ....................................................................... 1 1.1 THE BASICS OF CO2 EOR... ....................................................................................................................................... 104 APPENDICES ....................................................................................................................................... 107 vii LIST OF FIGURES FIGURE 1-1 GAS INJECTION EOR IN U.S [1...

Bui, Ly H.

2010-07-26T23:59:59.000Z

410

Carbon Dioxide Flux Measurement Systems (CO2Flux) Handbook  

SciTech Connect (OSTI)

The Southern Great Plains (SGP) carbon dioxide flux (CO2 flux) measurement systems provide half-hour average fluxes of CO2, H2O (latent heat), and sensible heat. The fluxes are obtained by the eddy covariance technique, which computes the flux as the mean product of the vertical wind component with CO2 and H2O densities, or estimated virtual temperature. A three-dimensional sonic anemometer is used to obtain the orthogonal wind components and the virtual (sonic) temperature. An infrared gas analyzer is used to obtain the CO2 and H2O densities. A separate sub-system also collects half-hour average measures of meteorological and soil variables from separate 4-m towers.

Fischer, M

2005-01-01T23:59:59.000Z

411

Renewable Energy and CO2: Current Status and Costs  

Science Journals Connector (OSTI)

In this chapter, it is exposed a brief description of the current use and theoretical potential of renewable and conventional energies, the evolution of the CO2 emissions and atmospheric concentration and their i...

Ricardo Guerrero-Lemus; José Manuel Martínez-Duart

2013-01-01T23:59:59.000Z

412

Biominetic Membrane for Co2 Capture from Flue Gas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Membrane for CO Biomimetic Membrane for CO 2 Capture from Flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport, and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post

413

Dehydrated Prussian Blues for CO2 Storage and Separation Applications  

SciTech Connect (OSTI)

Adsorption isotherms of pure gases present in flue and natural gas including CO2, N2, CH4 and water were studied using prussian blues of chemical formula M3[Co(CN)6]2 (M = Cu, Ni, Mn). These materials adsorbed 8-12 wt % of CO2 at room temperature and 1 bar of pressure with heats of adsorption ranging from 6 to 16 kcal/mol.

Motkuri, Radha K.; Thallapally, Praveen K.; McGrail, B. Peter; Ghorishi, Behrooz S.

2010-08-13T23:59:59.000Z

414

Conversion of the greenhouse gas CO2 to the fuel gas CO via the Boudouard reaction: A review  

Science Journals Connector (OSTI)

Abstract The remediation of carbon dioxide emitted into the atmosphere has become the topic of the day due to the enormous contribution of CO2 to the devastating global warming. The Boudouard reaction, in which solid carbon (char) reacts with CO2 to produce carbon monoxide (CO2 (g)+C(s)?CO (g)), is a straightforward route for the CO2 emission mitigation. Through this reaction, the CO2 coming from variety of combustion plants, including exhaust/flue gas and synthesis gas, can be upgraded to the fuel gas, CO. This work presents a review on the CO2 gasification of char, from coal, biomass, municipal solid wastes, sewage sludge or any co-utilized blend of them, to produce CO through the Boudouard reaction. An outline of the most effective parameters on the char gasification rate is presented. The parameters which affect the char reactivity are reviewed as those related to the char and its structural features (surface area and porosity, active sites, mineral content, structural evolution of char during gasification, pyrolysis condition and carbon source) and operation parameters (use of catalyst, gasification temperature, gasification pressure and CO2 partial pressure, char particle size and gasification heat source). The kinetics of the char gasification reaction is studied and several theoretical or semi-empirical kinetic models used to interpret the reaction rate data and calculation of kinetic parameters, specifically activation energy, are reviewed and discussed.

Pooya Lahijani; Zainal Alimuddin Zainal; Maedeh Mohammadi; Abdul Rahman Mohamed

2015-01-01T23:59:59.000Z

415

CBM and CO2-ECBM related sorption processes in coal: A review  

Science Journals Connector (OSTI)

This article reviews the state of research on sorption of gases (CO2, CH4) and water on coal for primary recovery of coalbed methane (CBM), secondary recovery by an enhancement with carbon dioxide injection (CO2-ECBM), and for permanent storage of CO2 in coal seams. Especially in the last decade a large amount of data has been published characterizing coals from various coal basins world-wide for their gas sorption capacity. This research was either related to commercial CBM production or to the usage of coal seams as a permanent sink for anthropogenic CO2 emissions. Presently, producing methane from coal beds is an attractive option and operations are under way or planned in many coal basins around the globe. Gas-in-place determinations using canister desorption tests and CH4 isotherms are performed routinely and have provided large datasets for correlating gas transport and sorption properties with coal characteristic parameters. Publicly funded research projects have produced large datasets on the interaction of CO2 with coals. The determination of sorption isotherms, sorption capacities and rates has meanwhile become a standard approach. In this study we discuss and compare the manometric, volumetric and gravimetric methods for recording sorption isotherms and provide an uncertainty analysis. Using published datasets and theoretical considerations, water sorption is discussed in detail as an important mechanisms controlling gas sorption on coal. Most sorption isotherms are still recorded for dry coals, which usually do not represent in-seam conditions, and water present in the coal has a significant control on CBM gas contents and CO2 storage potential. This section is followed by considerations of the interdependence of sorption capacity and coal properties like coal rank, maceral composition or ash content. For assessment of the most suitable coal rank for CO2 storage data on the CO2/CH4 sorption ratio data have been collected and compared with coal rank. Finally, we discuss sorption rates and gas diffusion in the coal matrix as well as the different unipore or bidisperse models used for describing these processes. This review does not include information on low-pressure sorption measurements (BET approach) to characterize pore sizes or pore volume since this would be a review of its own. We also do not consider sorption of gas mixtures since the data base is still limited and measurement techniques are associated with large uncertainties.

Andreas Busch; Yves Gensterblum

2011-01-01T23:59:59.000Z

416

Generation of a Doubly Bridging CO2 Ligand and Deoxygenation of CO2 by an (NHC)Ni(0) Complex  

E-Print Network [OSTI]

for CO2, µ-2,2-CO2, at a dinickel core. The reaction of [(IPr)Ni(µ-Cl)]2 18 (IPr ) 1,3-bis(2,6-diisopro, (IPr)- Ni(6-C6D6). We note that this symmetric pattern for the backbone protons is observed in reacted isolation of the product as a solid. Reaction of [(IPr)Ni(µ-Cl)]2 with Li(HBEt3) or with NaOt-Bu followed

Müller, Peter

417

Current status of MHI CO2 capture plant technology, large scale demonstration project and road map to commercialization for coal fired flue gas application  

Science Journals Connector (OSTI)

(1) It is becoming increasingly evident that the prolonged utilization of fossil fuels for primary energy production, especially coal which is relatively cheap and abundant, is inevitable and that Carbon Capture and Storage (CCS) technology can significantly reduce CO2 emissions from this sector thus allowing the continued environmentally sustainable use of this important energy commodity on a global basis. (2) MHI has co-developed the Kansai Mitsubishi Carbon Dioxide Recovery Process (KM-CDR Process™) and KS-1™ absorbent, which has been deployed in seven CO2 capture plants, now under commercial operation operating at a CO2 capture capacity of 450 metric tons per day (tpd). In addition, a further two commercial plants are now under construction all of which capture CO2 from natural gas fired flue gas boilers and steam reformers. Accordingly this technology is now available for commercial scale CO2 capture for gas boiler and gas turbine application. (3) However before offering commercial CO2 capture plants for coal fired flue gas application, it is necessary to verify the influence of, and develop countermeasures for, related impurities contained in coal fired flue gas. This includes the influence on both the absorbent and the entire system of the CO2 capture plant to achieve high operational reliability and minimize maintenance requirements. (4) Preventing the accumulation of impurities, especially the build up of dust, is very important when treating coal fired flue gas and MHI has undertaken significant work to understand the impact of impurities in order to achieve reliable and stable operating conditions and to efficiently optimize integration between the CO2 capture plant, the coal fired power plant and the flue gas clean up equipment. (5) To achieve this purpose, MHI constructed a 10 tpd CO2 capture demonstration plant at the Matsushima 1000 MW Power Station and confirmed successful, long term demonstration following ?5000 hours of operation in 2006–07 with 50% financial support by RITE, as a joint program to promote technological development with the private sector, and cooperation from J-POWER. (6) Following successful demonstration testing at Matsushima, additional testing was undertaken in 2008 to examine the impact of entrainment of higher levels of flue gas impurities (primarily \\{SOx\\} and dust by bypassing the existing FGD) and to determine which components of the CO2 recovery process are responsible for the removal of these impurities. Following an additional 1000 demonstration hours, results indicated stable operational performance in relation to the following impurities; (1) SO2: Even at higher SO2 concentrations were almost completely removed from the flue gas before entering the CO2 absorber. (2) Dust: The accumulation of dust in the absorbent was higher, leading to an advanced understanding of the behavior of dust in the CO2 capture plant and the dust removal efficiency of each component within the CO2 recovery system. The data obtained is useful for the design of large-scale units and confirms the operating robustness of the CO2 capture plant accounting for wide fluctuations in impurity concentrations. (7) This important coal fired flue gas testing showed categorically that minimizing the accumulation of large concentrations of impurities, and to suppress dust concentrations below a prescribed level, is important to achieve long-term stable operation and to minimize maintenance work for the CO2 capture plant. To comply with the above requirement, various countermeasures have been developed which include the optimization of the impurity removal technology, flue gas pre treatment and improved optimization with the flue gas desulfurization facility. (8) In case of a commercial scale CO2 capture plant applied for coal fired flue gas, its respective size will be several thousand tpd which represents a considerable scale-up from the 10 tpd demonstration plant. In order to ensure the operational reliability and to accurately confirm the influence and the behavior of the impurities in coal fired fl

Takahiko Endo; Yoshinori Kajiya; Hiromitsu Nagayasu; Masaki Iijima; Tsuyoshi Ohishi; Hiroshi Tanaka; Ronald Mitchell

2011-01-01T23:59:59.000Z

418

Integrated Geothermal-CO2 Storage Reservoirs: FY1 Final Report  

SciTech Connect (OSTI)

The purpose of phase 1 is to determine the feasibility of integrating geologic CO2 storage (GCS) with geothermal energy production. Phase 1 includes reservoir analyses to determine injector/producer well schemes that balance the generation of economically useful flow rates at the producers with the need to manage reservoir overpressure to reduce the risks associated with overpressure, such as induced seismicity and CO2 leakage to overlying aquifers. This submittal contains input and output files of the reservoir model analyses. A reservoir-model "index-html" file was sent in a previous submittal to organize the reservoir-model input and output files according to sections of the FY1 Final Report to which they pertain. The recipient should save the file: Reservoir-models-inputs-outputs-index.html in the same directory that the files: Section2.1.*.tar.gz files are saved in.

Thomas A. Buscheck

2012-01-01T23:59:59.000Z

419

Properties of surfactant films in water-in-CO2 microemulsions obtained by small-angle neutron scattering  

Science Journals Connector (OSTI)

AbstractHypothesis The formation, stability and structural properties of normal liquid phase microemulsions, stabilized by hydrocarbon surfactants, comprising water and hydrocarbon oils can be interpreted in terms of the film bending rigidity (energy) model. Here, this model is tested for unusual water-in-CO2 (w/c) microemulsions, formed at high pressure with supercritical CO2 (sc-CO2) as a solvent and fluorinated surfactants as stabilizers. Hence, it is possible to explore the generality of this model for other types of microemulsions. Experiments High Pressure Small-Angle Neutron Scattering (HP-SANS) has been used to study w/c microemulsions, using contrast variation to highlight scattering from the stabilizing fluorinated surfactant films: these data show clear evidence for spherical core–shell structures for the microemulsion droplets. Findings The results extend understanding of w/c microemulsions since previous SANS studies are based only on scattering from water core droplets. Here, detailed structural parameters for the surfactant films, such as thickness and film bending energy, have been extracted from the core–shell SANS profiles revealed by controlled contrast variation. Furthermore, at reduced CO2 densities (?0.7 g cm?3), elongated cylindrical droplet structures have been observed, which are uncommon for CO2 microemulsions/emulsions. The implications of the presence of cylindrical micelles and droplets for applications of CO2, and viscosity enhancements are discussed.

Ci Yan; Masanobu Sagisaka; Craig James; Sarah Rogers; Shirin Alexander; Julian Eastoe

2014-01-01T23:59:59.000Z

420

International Collaboration on CO2 Sequestration  

SciTech Connect (OSTI)

On December 4, 1997, the US Department of Energy (USDOE), the New Energy and Industrial Technology Development Organization of Japan (NEDO), and the Norwegian Research Council (NRC) entered into a Project Agreement for International Collaboration on CO{sub 2} Ocean Sequestration. Government organizations from Japan, Canada, and Australia, and a Swiss/Swedish engineering firm later joined the agreement, which outlined a research strategy for ocean carbon sequestration via direct injection. The members agreed to an initial field experiment, with the hope that if the initial experiment was successful, there would be subsequent field evaluations of increasingly larger scale to evaluate environmental impacts of sequestration and the potential for commercialization. The evolution of the collaborative effort, the supporting research, and results for the International Collaboration on CO{sub 2} Ocean Sequestration were documented in almost 100 papers and reports, including 18 peer-reviewed journal articles, 46 papers, 28 reports, and 4 graduate theses. These efforts were summarized in our project report issued January 2005 and covering the period August 23, 1998-October 23, 2004. An accompanying CD contained electronic copies of all the papers and reports. This report focuses on results of a two-year sub-task to update an environmental assessment of acute marine impacts resulting from direct ocean sequestration. The approach is based on the work of Auerbach et al. [6] and Caulfield et al. [20] to assess mortality to zooplankton, but uses updated information concerning bioassays, an updated modeling approach and three modified injection scenarios: a point release of negatively buoyant solid CO{sub 2} hydrate particles from a moving ship; a long, bottom-mounted diffuser discharging buoyant liquid CO{sub 2} droplets; and a stationary point release of hydrate particles forming a sinking plume. Results suggest that in particular the first two discharge modes could be successfully designed to largely avoid zooplankton mortality. Sub-lethal and ecosystem effects are discussed qualitatively, but not analyzed quantitatively.

Peter H. Israelsson; E. Eric Adams

2007-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "ks modeling co2" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Comprehensive Analysis of Enhanced CBM Production via CO2 Injection Using a Surrogate Reservoir Model Jalal Jalali, Shahab D. Mohaghegh, Dept. of Petroleum & Natural Gas Engineering, West Virginia University  

E-Print Network [OSTI]

Model Jalal Jalali, Shahab D. Mohaghegh, Dept. of Petroleum & Natural Gas Engineering, West Virginia (net thickness, porosity, permeability, etc.) are generated by geo-statistical techniques using a small layer. Once the outputs are generated by the network and an error is generated by comparing the network

Mohaghegh, Shahab

422

Abstract Atmospheric CO2 partial pressure (pCO2) was as low as 18 Pa during the Pleistocene and is projected to  

E-Print Network [OSTI]

Abstract Atmospheric CO2 partial pressure (pCO2) was as low as 18 Pa during the Pleistocene and is projected to increase from 36 to 70 Pa CO2 before the end of the 21st century. High pCO2 often increases the growth and repro- duction of C3 annuals, whereas low pCO2 decreases growth and may reduce or prevent

Antonovics, Janis

423

Technical Report: Influence of an enhanced use of biomass for energy on the CO2 concentration in the atmosphere  

Science Journals Connector (OSTI)

In this study, the influence of different strategies of 'biomass for energy' was modelled by means of a global carbon cycle model in order to compute the annual atmospheric CO2 concentration until the year 2100. A 'Combined Energy and Biosphere Model' was developed on the basis of the Osnabrück Biosphere Model (OBM).

Gilbert Ahamer

1994-01-01T23:59:59.000Z

424

CO2 Gasification Rates of Petroleum Coke in a Pressurized Flat-Flame Burner Entrained-Flow Reactor  

Science Journals Connector (OSTI)

Two petcoke samples were gasified by CO2 at total pressures of 10 and 15 atm in a high-pressure flat-flame burner reactor at conditions where the bulk phase consisted of either 40 or 90 mol % CO2 with gas temperatures up to 1909 K. Particle diameters of 45–75 ?m were used in the experiments. ... The mass release data caused by CO2 gasification of the petcoke chars were fit to a global first-order model, and the optimal kinetic parameters are reported. ... The CO2 char gasification rates of both petcokes were shown to be higher than Illinois #6 coal when reacted at conditions of high temperature and pressure, even though most reactivity comparisons between petcoke and coal at lower temperature, pressure, and heating rates typically result in coal being more reactive. ...

Aaron D. Lewis; Emmett G. Fletcher; Thomas H. Fletcher

2014-06-05T23:59:59.000Z

425

CO2-selective, Hybrid Membranes by Silation of Alumina  

SciTech Connect (OSTI)

Hybrid membranes are feasible candidates for the separation of CO2 from gas produced in coal-based power generation since they have the potential to combine the high selectivity of polymer membranes and the high permeability of inorganic membranes. An interesting method for producing hybrid membranes is the silation of an inorganic membrane. In this method, trichloro- or alkoxy-silanes interact with hydroxyl groups on the surface of ?-AlO3 or TiO2, binding organic groups to that surface. By varying the length of these organic groups on the organosilane, it should be possible to tailor the effective pore size of the membrane. Similarly, the addition of “CO2-phillic” groups to the silating agent allows for the careful control of surface affinity and the enhancement of surface diffusion mechanisms. This method of producing hybrid membranes selective to CO2 was first attempted by Hyun [1] who silated TiO2 with phenyltriethoxysilane. Later, Way [2] silated ?-AlO3 with octadecyltrichlorosilane. Both researchers were successful in producing membranes with improved selectivity toward CO2, but permeability was not maintained at a commercially applicable level. XPS data indicated that the silating agent did not penetrate into the membrane pores and separation actually occurred in a thin “polymer-like” surface layer. The present study attempts to overcome the mass transfer problems associated with this technique by producing the desired monolayer coverage of silane, and thus develop a highly-permeable CO2-selective hybrid membrane.

Luebke, D.R.; Pennline, H.W.

2007-09-01T23:59:59.000Z

426

Surface Ocean CO2 Atlas (SOCAT) gridded data products  

SciTech Connect (OSTI)

A well documented, publicly available, global data set for surface ocean carbon dioxide (CO2) parameters has been called for by international groups for nearly two decades. The Surface Ocean CO2 Atlas (SOCAT) project was initiated by the international marine carbon science community in 2007 with the aim of providing a comprehensive, publicly available, regularly updated, global data set of marine surface CO2, which had been subject to quality control (QC). SOCAT version 1.5 was made public in September 2011 and holds 6.3 million quality controlled surface CO2 data from the global oceans and coastal seas, spanning four decades (1968 2007). The SOCAT gridded data is the second data product to come from the SOCAT project. Recognizing that some groups may have trouble working with millions of measurements, the SOCAT gridded product was generated to provide a robust regularly spaced fCO2 product with minimal spatial and temporal interpolation which should be easier to work with for many applications. Gridded SOCAT is rich with information that has not been fully explored yet, but also contains biases and limitations that the user needs to recognize and address.

Sabine, Christopher [NOAA Pacific Marine Environmental Laboratory; Hankin, S. [Pacific Northwest National Laboratory (PNNL); Koyuk, H [Joint Institute for the Study of the Atmosphere and Ocean, University of Washington; Bakker, D C E [School of Environmental Sciences, University of East Anglia, Norwich, UK; Pfeil, B [Geophysical Institute, University of Bergen; Uni Research AS, Bergen, Norway; Olsen, A [Bjerknes Centre for Climate Research, UNIFOB AS, Bergen, Norway; Metzl, N [Universite Pierre et Marie Curie, LOCEAN/IPSL, Paris, France; Kozyr, Alexander [ORNL; Fassbender, A [School of Oceanography, University of Washington, Seattle, WA; Manke, A [Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration; Malczyk, J [Jetz Laboratory, Department of Ecology and Evolutionary Biology, Yale University; Akl, J [CSIRO Wealth from Oceans Flagship, Hobart, Tasmania, Australia; Alin, S R [Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration; Bellerby, R G J [Geophysical Institute, University of Bergen, Bergen, Norway; Borges, A [University of Liege, Chemical Oceanography Unit, Institut de Physique, Liege, Belgium; Boutin, J [Universite Pierre et Marie Curie, LOCEAN/IPSL, Paris, France; Brown, P J [School of Environmental Sciences, University of East Anglia, Norwich, UK; Cai, W-J [Department of Marine Sciences, University of Georgia; Chavez, F P [Monterey Bay Aquarium Research Institute, Moss Landing, CA; Chen, A [Institute of Marine Geology and Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan; Cosa, C [Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration; Feely, R A [Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration; Gonzalez-Davila, M [Universidad de Las Palmas de Gran Canaria, Facultad de Ciencias del Mar, Las Palmas de Gran Canaria,; Goyet, C [Institut de Modélisation et d'Analyse en Géo-Environnement et Santé, Université de Perpignan; Hardman-Mountford, N [CSIRO, Marine and Atmospheric Research, Wembley, Western Australia, Australia; Heinze, C [Geophysical Institute, University of Bergen, Bergen, Norway; Hoppema, M [Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; Hunt, C W [Ocean Process Analysis Lab, University of New Hampshire, Durham, New Hampshire; Hydes, D [National Oceanography Centre, Southampton, UK; Ishii, M [Japan Meteorological Agency, Meteorological Research Institute, Tsukuba, Japan; Johannessen, T [Geophysical Institute, University of Bergen, Bergen, Norway; Key, R M [Atmospheric and Oceanic Sciences, Princeton University, Princeton, New Jersey; Kortzinger, A [GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany; Landschutzer, P [School of Environmental Sciences, University of East Anglia, Norwich, UK; Lauvset, S K [Geophysical Institute, University of Bergen, Bergen, Norway; Lefevre, N [Université Pierre et Marie Curie, LOCEAN/IPSL, Paris, France; Lenton, A [Centre for Australian Weather and Climate Research, Hobart, Tasmania, Australia; Lourantou, A [Université Pierre et Marie Curie, LOCEAN/IPSL, Paris, France; Merlivat, L [Université Pierre et Marie Curie, LOCEAN/IPSL, Paris, France; Midorikawa, T [Nagasaki Marine Observatory, Nagasaki, Japan; Mintrop, L [MARIANDA, Kiel, Germany; Miyazaki, C [Faculty of Environmental Earth Science, Hokkaido University, Hokkaido, Japan; Murata, A [Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; Nakadate, A [Marine Division, Global Environment and Marine Department, Japan Meteorological Agency, Tokyo, Japan; Nakano, Y [Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; Nakaoka, S [National Institute for Environmental Studies (NIES), Tsukuba, Japan; Nojiri, Y [National Institute for Environmental Studies, Tsukuba, Japan; et al.

2013-01-01T23:59:59.000Z

427

NETL: Bench-Scale Development of a Hybrid Membrane-Absorption CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Bench-Scale Development of a Hybrid Membrane-Absorption CO2 Capture Process Bench-Scale Development of a Hybrid Membrane-Absorption CO2 Capture Process Project No.: DE-FE0013118 Membrane Technology and Research (MTR) is developing and evaluating a hybrid membrane-absorption CO2 capture system. This work builds on prior DOE-funded work and combines MTR's Polaris(tm) membrane, in a low-pressure-drop, large area, plate-and-frame module, with UT Austin's piperazine (PZ) solvent and advanced, high-temperature and pressure regeneration technology. Preliminary estimates indicate that this hybrid system could lower the regeneration energy by 30 percent compared to that required with 30 weight percent monoethanolamine (MEA). MTR is evaluating two variations of the hybrid design consisting of the cross-flow Polaris membrane, which enriches flue gas to approximately 20 percent CO2, and an advanced 5 molal PZ advanced flash stripper with cold-rich bypass. The flash stripper will be optimized to take advantage of the higher CO2 concentration. In the first variation, the two systems are operated in series; in the second, the flue gas flow is split and treated by each system in parallel. The first phase of this project will include an examination of both hybrid configurations, using an integrated process model and a preliminary techno-economic assessment. In the second phase, MTR will manufacture and test a low pressure drop, large-area membrane module and UT Austin will modify their 0.1 MWe pilot plant and operate it under simulated series and parallel configurations. Based on the model and test results, the most promising configuration will be identified. In the final stage of the project, the membrane module will be integrated into the pilot plant where the fully integrated hybrid system, in its most promising cost optimized configuration, will be tested on simulated flue gas.

428

Enhancement of CO2/N2 selectivity in a metal-organic framework by cavity modification  

E-Print Network [OSTI]

electricity is a major source of CO2 in the atmosphere, but the capture and sequestration of CO2 from flue gas two-thirds), CO2, water vapor, oxygen, and minor components such as carbon monoxide, nitrogen oxides

429

Analysis of mineral trapping for CO2 disposal in deep aquifers  

E-Print Network [OSTI]

of Mineral Trapping for CO2 Disposal in Deep Aquifers Tianfue~mail: Tianfu Xu@lbl. gov) CO2 disposal into deep aquiferspermit significant sequestration of CO2. We performed batch

Xu, Tianfu

2014-01-01T23:59:59.000Z

430

Syngas Production from Coal Gasification with CO2 Rich Gas Mixtures  

Science Journals Connector (OSTI)

Coal gasification with CO2 rich gas mixture is one of several promising new technologies associated with CO2 reduction in the atmosphere. Coal gasification with high CO2 concentration is suitable for producing la...

M. S. Alam; A. T. Wijayanta; K. Nakaso…

2013-01-01T23:59:59.000Z

431

Practical and Economic Aspects of the Ex-Situ Process: Implications for CO2 Sequestration  

Science Journals Connector (OSTI)

Practical and Economic Aspects of the Ex-Situ Process: Implications for CO2 Sequestration ... The cost for capturing CO2 from a coal and/or gas fired plant varies between 30 to 60 $/t CO2. ...

Sohrab Zendehboudi; Alireza Bahadori; Ali Lohi; Ali Elkamel; Ioannis Chatzis

2012-11-13T23:59:59.000Z

432

Biomimetric Membrane for CO2 Capture from Flue Gas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic memBrane for co Biomimetic memBrane for co 2 capture from flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post combustion applications - absorption, adsorption, reaction and membranes chemically facilitated absorption promises to be the most cost-effective membrane solution for post combustion application. The Carbozyme technology extracts CO 2 from low concentration, low pressure sources by means of chemical facilitation of a polymer membrane. The chemical

433

Development of Novel Carbon Sorbents for CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbon Sorbents Carbon Sorbents for CO 2 Capture Background The mission of the U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Research and Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal re- serves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental regulations. The EPEC R&D Program portfolio of post- and oxy-combustion carbon dioxide (CO 2 ) emissions control technologies and CO 2 compression is focused on advancing technological options for the existing fleet of coal-fired power plants in the event of carbon constraints. Pulverized coal (PC)-fired power plants are large, stationary sources of CO

434

CO2 Injection in Kansas Oilfield Could Greatly Increase Production,  

Broader source: Energy.gov (indexed) [DOE]

in Kansas Oilfield Could Greatly Increase Production, in Kansas Oilfield Could Greatly Increase Production, Permanently Store Carbon Dioxide, DOE Study Says CO2 Injection in Kansas Oilfield Could Greatly Increase Production, Permanently Store Carbon Dioxide, DOE Study Says August 31, 2011 - 1:00pm Addthis Washington, DC - The feasibility of using carbon dioxide (CO2) injection for recovering between 250 million and 500 million additional barrels of oil from Kansas oilfields has been established in a study funded by the U.S. Department of Energy (DOE). The University of Kansas Center for Research studied the possibility of near-miscible CO2 flooding for extending the life of mature oilfields in the Arbuckle Formation while simultaneously providing permanent geologic storage of carbon dioxide, a major greenhouse gas.

435

Pre-Combustion CO2 Removal System Â… Demonstration Unit  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Post-Combustion CO Post-Combustion CO 2 Capture System for Existing Coal-fired Power Plant Project Review (DE-FE-0007580) Gökhan Alptekin, PhD Ambal Jayaraman, PhD Robert Copeland, PhD DOE/NETL CO 2 Capture Technology Meeting Meeting Pittsburgh, PA July 8, 2013 TDA R e s e a r c h Project Summary * The objective is to develop a post-combustion capture process for coal-fired power plants and demonstrate technical feasibility (at bench-scale) and economic viability of the new concept * A mesoporous carbon adsorbent is used to selectively remove CO 2 from the flue gas, regenerating under very mild conditions Budget Period 1 * Sorbent Optimization/scale-up and Laboratory Evaluations * Process Design and System Analysis Budget Period 2 * Long-term Sorbent Cycling * Design of a Breadboard Prototype Test Unit

436

Advanced Research Power Program--CO2 Mineral Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sequestration Sequestration Robert Romanosky National Energy Technology Laboratory Mineral Carbonation Workshop August 8, 2001 Advanced Research Power Program Descriptor - include initials, /org#/date Mineral Sequestration Research Research effort seeks to refine and validate a promising CO 2 sequestration technology option, mineral sequestration also known as mineral carbonation Descriptor - include initials, /org#/date What is Mineral Carbonation * Reaction of CO 2 with Mg or Ca containing minerals to form carbonates * Lowest energy state of carbon is a carbonate and not CO 2 * Occurs naturally in nature as weathering of rock * Already proven on large scale - Carbonate formation linked to formation of the early atmosphere Descriptor - include initials, /org#/date Advantages of Mineral Carbonation

437

Distributed Optical Sensor for CO2 Leak Detection  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Optical Sensor for CO Optical Sensor for CO 2 Leak Detection Opportunity Research is active on the technology "Distributed Optical Sensor for CO 2 Leak Detection," for which a Patent Application has been filed. This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Overview The availability of fossil fuels to provide clean, affordable energy is essential for domestic and global prosperity and security well into the 21st century. However, there are concerns over the impacts of greenhouse gases (GHGs) in the atmosphere-particularly carbon dioxide (CO 2 ). Carbon capture and storage in geologic formations is a promising technology to reduce the impact of CO

438

Calculating CO2 Emissions from Mobile Sources | Open Energy Information  

Open Energy Info (EERE)

Calculating CO2 Emissions from Mobile Sources Calculating CO2 Emissions from Mobile Sources Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Calculating CO2 Emissions from Mobile Sources,GHG Protocol Agency/Company /Organization: Aether, Environmental Data Services, Aether, Environmental Data Services Sector: Energy Focus Area: GHG Inventory Development, Industry, Transportation Topics: GHG inventory, Potentials & Scenarios Resource Type: Guide/manual Complexity/Ease of Use: Not Available Website: cf.valleywater.org/Water/Where_Your_Water_Comes_From/Water%20Supply%20 Cost: Free References: http://cf.valleywater.org/Water/Where_Your_Water_Comes_From/Water%20Supply%20and%20Infrastructure%20Planning/Climate%20Change/Guidance_for_mobile_emissions_GHG_protocol.pdf Related Tools Tool and Calculator (Transit, Fuel)

439

Wirebonding SVX prime silicon ladders using the K&S 1478 wirebonder  

SciTech Connect (OSTI)

This report discusses the follow on the K&S 1478 Wirebonder: Power Up; Tool Calibration; Manual Mode; Teach Mode; and Reference Systems.

Dyer, A.

1993-09-01T23:59:59.000Z

440

The Potential for Increased Atmospheric CO2 Emissions and Accelerated Consumption of Deep Geologic CO2 Storage Resources Resulting from the Large-Scale Deployment of a CCS-Enabled Unconventional Fossil Fuels Industry in the U.S.  

SciTech Connect (OSTI)

Desires to enhance the energy security of the United States have spurred significant interest in the development of abundant domestic heavy hydrocarbon resources including oil shale and coal to produce unconventional liquid fuels to supplement conventional oil supplies. However, the production processes for these unconventional fossil fuels create large quantities of carbon dioxide (CO2) and this remains one of the key arguments against such development. Carbon dioxide capture and storage (CCS) technologies could reduce these emissions and preliminary analysis of regional CO2 storage capacity in locations where such facilities might be sited within the U.S. indicates that there appears to be sufficient storage capacity, primarily in deep saline formations, to accommodate the CO2 from these industries. Nevertheless, even assuming wide-scale availability of cost-effective CO2 capture and geologic storage resources, the emergence of a domestic U.S. oil shale or coal-to-liquids (CTL) industry would be responsible for significant increases in CO2 emissions to the atmosphere. The authors present modeling results of two future hypothetical climate policy scenarios that indicate that the oil shale production facilities required to produce 3MMB/d from the Eocene Green River Formation of the western U.S. using an in situ retorting process would result in net emissions to the atmosphere of between 3000-7000 MtCO2, in addition to storing potentially 900-5000 MtCO2 in regional deep geologic formations via CCS in the period up to 2050. A similarly sized, but geographically more dispersed domestic CTL industry could result in 4000-5000 MtCO2 emitted to the atmosphere in addition to potentially 21,000-22,000 MtCO2 stored in regional deep geologic formations over the same period. While this analysis shows that there is likely adequate CO2 storage capacity in the regions where these technologies are likely to deploy, the reliance by these industries on large-scale CCS could result in an accelerated rate of utilization of the nation’s CO2 storage resource, leaving less high-quality storage capacity for other carbon-producing industries including electric power generation.

Dooley, James J.; Dahowski, Robert T.; Davidson, Casie L.

2009-11-02T23:59:59.000Z

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441

Quantifying the air quality-CO2 tradeoff potential for airports  

Science Journals Connector (OSTI)

Abstract Aircraft movements on the airport surface are responsible for CO2 emissions that contribute to climate change and other emissions that affect air quality and human health. While the potential for optimizing aircraft surface movements to minimize CO2 emissions has been assessed, the implications of CO2 emissions minimization for air quality have not been quantified. In this paper, we identify conditions in which there is a tradeoff between CO2 emissions and population exposure to O3 and secondary PM2.5 – i.e. where decreasing fuel burn (which is directly proportional to CO2 emissions) results in increased exposure. Fuel burn and emissions are estimated as a function of thrust setting for five common gas turbine engines at 34 US airports. Regional air quality impacts, which are dominated by ozone and secondary PM2.5, are computed as a function of airport location and time using the adjoint of the GEOS-Chem chemistry-transport model. Tradeoffs between CO2 emissions and population exposure to PM2.5 and O3 occur between 2–18% and 5–60% of the year, respectively, depending on airport location, engine type, and thrust setting. The total duration of tradeoff conditions is 5–12 times longer at maximum thrust operations (typical for takeoff) relative to 4% thrust operations (typical for taxiing). Per kilogram of additional fuel burn at constant thrust setting during tradeoff conditions, reductions in population exposure to PM2.5 and O3 are 6–13% and 32–1060% of the annual average (positive) population exposure per kilogram fuel burn, where the ranges encompass the medians over the 34 airports. For fuel burn increases due to thrust increases (i.e. for constant operating time), reductions in both PM2.5 and O3 exposure are 1.5–6.4 times larger in magnitude than those due to increasing fuel burn at constant thrust (i.e. increasing operating time). Airports with relatively high population exposure reduction potentials – which occur due to a combination of high duration and magnitude of tradeoff conditions – are identified. Our results are the first to quantify the extent of the tradeoff between CO2 emissions and air quality impacts at airports. This raises the possibility of reducing the air quality impacts of airports beyond minimizing fuel burn and/or optimizing for minimum net environmental impact.

Akshay Ashok; Irene C. Dedoussi; Steve H.L. Yim; Hamsa Balakrishnan; Steven R.H. Barrett

2014-01-01T23:59:59.000Z

442

Ligand Additions to Cp*(CO)2ReRe(CO)2Cp* and Fragmentation and Rearrangement Reactions of Cp*(CO)2Re(?-CO)Re(CO)(L)Cp*  

Science Journals Connector (OSTI)

Ligand Additions to Cp*(CO)2ReRe(CO)2Cp* and Fragmentation and Rearrangement Reactions of Cp*(CO)2Re(?-CO)Re(CO)(L)Cp* ... Cp*(CO)2ReRe(CO)2Cp* (1) reacted with 2-butyne at ?78 °C to form the 1:1 adduct Cp*(CO)2Re(?-CO)Re(CO)(2-butyne)Cp* (8). ... At ?40 °C, 8 was converted to a mixture of the dimetallacyclopentenone Cp*(CO)2Re[?-?1,?3-(CH3)CC(CH3)CO]Re(CO)Cp* (9) and two fragmentation products:? Cp*Re(CO)3 and Cp*Re(CO)(CH3C?CCH3) (14). ...

Charles P. Casey; Ronald S. Cariño; Hiroyuki Sakaba; Randy K. Hayashi

1996-05-28T23:59:59.000Z

443

Co-optimising CO2 storage and enhanced recovery in gas and gas condensate reservoirs.  

E-Print Network [OSTI]

??Burning fossil fuels supply energy and releases carbon dioxide (CO2). Carbon capture and storage (CCS) can reduce CO2 emissions. However, CCS is an expensive process.… (more)

Tan, Jo Ann

2012-01-01T23:59:59.000Z

444

The CO2 Reforming of Natural Gas in a Pulsed Corona Discharge Reactor  

Science Journals Connector (OSTI)

The conversion of CO 2 and (CH 4+CO 2 ) mixtures to CO, at room temperature and atmospheric pressure conditions, in...

M. A. Malik; X. Z. Jiang

1999-12-01T23:59:59.000Z

445

A Feasibility Study of Non-Seismic Geophysical Methods for Monitoring Geologic CO2 Sequestration  

E-Print Network [OSTI]

CO 2 enhanced oil recovery (EOR) and sequestration in athe measurement configuration. EOR/sequestration projects inshow that a CO 2 –based EOR could increase oil recovery by

Gasperikova, Erika; Hoversten, G. Michael

2006-01-01T23:59:59.000Z

446

The Rosetta Resources CO2 Storage Project - A WESTCARB Geologic Pilot Test  

E-Print Network [OSTI]

of enhanced oil recovery (EOR) using injected CO 2 to driveof enhanced oil recovery (EOR) using injected CO 2 to swell

2006-01-01T23:59:59.000Z

447

A parametric study on reservoir cooling for enhanced oil recovery from CO2 injection.  

E-Print Network [OSTI]

??Whorton et al. (1952) received a patent for their development of an oil recovery method by CO2 injection. Since then,