Sample records for anaerobic digestion anaerobic

  1. Arnold Schwarzenegger ANAEROBIC DIGESTER

    E-Print Network [OSTI]

    samples are overwhelmingly in favor of AD technology. Keywords Anaerobic digester, biogas, electricityArnold Schwarzenegger Governor ANAEROBIC DIGESTER IMPLEMENTATION ISSUES Phase II - A Survey who took concrete steps to install an anaerobic digestion (AD) facility and documentation

  2. Arnold Schwarzenegger ANAEROBIC DIGESTER

    E-Print Network [OSTI]

    technology. Keywords Anaerobic digester, biogas, electricity production, manure management #12;4 TableArnold Schwarzenegger Governor ANAEROBIC DIGESTER IMPLEMENTATION ISSUES Phase I - A Survey of U concrete steps to install an anaerobic digestion (AD) facility and documentation of the factors

  3. Bibliography on anaerobic digestion

    SciTech Connect (OSTI)

    Ramakrishna, J.; Pruett, D.M.; Santerre, M.T.; Toyoshiba, T.S.

    1980-09-01T23:59:59.000Z

    The priority assigned to biogas systems by participants in A.I.D's Energy for Rural Development Program spurred the compilation of this 373-item bibliography on anaerobic digestion. The materials focus on energy technologies that are especially suited to the social, economic, and institutional concerns of rural Asia and the Pacific. Entries are presented in two sections. The first presents largely non-technical reports on anaerobic digesters in South and Southeast Asia, for the years 1956-80, with emphasis on the period 1970-80. The second section, which includes both technical and non-technical references, is a condensation of a computerized search of the U.S. Department of Energy's Energy Research Abstracts published during the period 1977-80. The search revealed a lack of reliable data, pointing to the need for further research on the technology and potential of anaerobic digestion.

  4. Anaerobic Digestion of Biowaste in Developing Countries

    E-Print Network [OSTI]

    Wehrli, Bernhard

    Anaerobic Digestion of Biowaste in Developing Countries Practical Information and Case Studies Sandec: Department of Water and Sanitation in Developing Countries #12;Anaerobic Digestion of Biowaste-3-906484-58-7 Bibliographic reference: Vögeli Y., Lohri C. R., Gallardo A., Diener S., Zurbrügg C. (2014). Anaerobic Digestion

  5. Anaerobic Digestion of Primary Sewage Effluent

    E-Print Network [OSTI]

    Anaerobic Digestion of Primary Sewage Effluent: Significant Energy Savings over Traditional Activated Sludge Treatment This report presents results for an anaerobic digestion system operated;Anaerobic Digestion of Primary Sewage Effluent Prepared for the U.S. Department of Energy Office

  6. The Anaerobic Digestion of Organic

    E-Print Network [OSTI]

    Iglesia, Enrique

    Separation in California 2.3. Biochemical Process 2.4. End-use 2.4.1. Biogas 2.4.1. Biomethane 2.5. Current and commercialization. Anaerobic digestion (AD) of organic municipal solid waste and subsequent biogas and methane as biomethane production; by emphasizing these benefits and implementing certain policies, expanding

  7. Biomass Program Perspectives on Anaerobic Digestion and Fuel...

    Office of Environmental Management (EM)

    Perspectives on Anaerobic Digestion and Fuel Cell Integration at Biorefineries Biomass Program Perspectives on Anaerobic Digestion and Fuel Cell Integration at Biorefineries DOE...

  8. Kinetic modeling and experimentation of anaerobic digestion

    E-Print Network [OSTI]

    Rea, Jonathan (Jonathan E.)

    2014-01-01T23:59:59.000Z

    Anaerobic digesters convert organic waste (agricultural and food waste, animal or human manure, and other organic waste), into energy (in the form of biogas or electricity). An added benefit to bio-digestion is a leftover ...

  9. Batch load anaerobic digestion of dairy manure

    E-Print Network [OSTI]

    Egg, Richard P

    1979-01-01T23:59:59.000Z

    and resource recovery. Anaerobic digestion of manure has re- ceived much attention as a method to reduce the pollution threat to the environment while reclaiming energy in the form of methane gas from the biomass. Currently there is one commercial anaerobic... production than the conventional process used in most studies to date. The objective of this research was to evaluate a batch load digestion process for methane production from dairy manure to determine the optimum influent total solids concentration...

  10. Biomass Anaerobic Digestion Facilities and Biomass Gasification Facilities (Indiana)

    Broader source: Energy.gov [DOE]

    The Indiana Department of Environmental Management requires permits before the construction or expansion of biomass anaerobic digestion or gasification facilities.

  11. Kinetics of inactivation of indicator pathogens during thermophilic anaerobic digestion

    E-Print Network [OSTI]

    Kinetics of inactivation of indicator pathogens during thermophilic anaerobic digestion Sudeep C Thermophilic anaerobic digestion Pathogen inactivation Ascaris suum Helminth eggs Poliovirus Enteric viruses a b s t r a c t Thermophilic anaerobic sludge digestion is a promising process to divert waste

  12. Biochar Produced from Anaerobically Digested Fiber Reduces Phosphorus...

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

    Lagoons. Abstract: This study evaluated the use of biochar produced from anaerobic digester dairy fiber (ADF) to sequester phosphorus (P) from dairy lagoons. The ADF was...

  13. anaerobic digestion heat: Topics by E-print Network

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

    brown water; biogas; co-digestion INTRODUCTION Paris-Sud XI, Universit de 15 HYDROGEN PRODUCTION BY ANAEROBIC MICROBIAL COMMUNITIES EXPOSED TO REPEATED HEAT TREATMENTS...

  14. Enhanced Anaerobic Digestion and Hydrocarbon Precursor Production from Sewage Sludge

    Broader source: Energy.gov [DOE]

    Breakout Session 2-C: Biogas and Beyond: Challenges and Opportunities for Advanced Biofuels from Wet-Waste FeedstocksEnhanced Anaerobic Digestion and Hydrocarbon Precursor Production from Sewage...

  15. Photoenhanced anaerobic digestion of organic acids

    DOE Patents [OSTI]

    Weaver, Paul F. (Golden, CO)

    1990-01-01T23:59:59.000Z

    A process is described for rapid conversion of organic acids and alcohols anaerobic digesters into hydrogen and carbon dioxide, the optimal precursor substrates for production of methane. The process includes addition of photosynthetic bacteria to the digester and exposure of the bacteria to radiant energy (e.g., solar energy). The process also increases the pH stability of the digester to prevent failure of the digester. Preferred substrates for photosynthetic bacteria are the organic acid and alcohol waste products of fermentative bacteria. In mixed culture with methanogenic bacteria or in defined co-culture with non-aceticlastic methanogenic bacteria, photosynthetic bacteria are capable of facilitating the conversion or organic acids and alcohols into methane with low levels of light energy input.

  16. April 16, 2013 Webinar: Community-Scale Anaerobic Digesters

    Office of Energy Efficiency and Renewable Energy (EERE)

    This webinar was held April 16, 2013, and provided information on San Jose, California's, commercial-scale, high solids dry fermentation anaerobic digestion system, and the Forest County Potawatomi...

  17. Design of an anaerobic digester in Quebec, Canada

    E-Print Network [OSTI]

    Bouaziz, Alexandre N. (Alexandre Nathanel)

    2014-01-01T23:59:59.000Z

    .In response to the future Quebec, Canada regulations prohibiting landfilling of organic matter by 2020, EBI, a waste management company located near Montreal is considering constructing an anaerobic digester. This thesis ...

  18. anaerobic digestion concept: Topics by E-print Network

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

    into a three Boyer, Edmond 32 FACT SHEET Agriculture and Natural Resources AEX-653.1-11 Manure to Energy Through Anaerobic Digestion CiteSeer Summary: Manure is one of the most...

  19. anaerobic digestion technology: Topics by E-print Network

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

    into a three Boyer, Edmond 35 FACT SHEET Agriculture and Natural Resources AEX-653.1-11 Manure to Energy Through Anaerobic Digestion CiteSeer Summary: Manure is one of the most...

  20. Anaerobic Co-Digestion on Dairies in Washington State

    E-Print Network [OSTI]

    Collins, Gary S.

    as food-processing wastes) to increase biogas productivity, improve digester performance, and increase with the manure--a process that has been shown to enhance digester performance and notably increase biogas1 Anaerobic Co-Digestion on Dairies in Washington State The solid waste handling permit exemption W

  1. Community Renewable Energy Success Stories: Community-Scale Anaerobic Digesters (text version)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Below is the text version of the webinar titled "Community-Scale Anaerobic Digesters," originally presented on April 16, 2013.

  2. Labscale Evaluation of Biomass-Derived Elements Used in Anaerobic Digestion

    E-Print Network [OSTI]

    Labscale Evaluation of Biomass-Derived Elements Used in Anaerobic Digestion This report presents performance data for an anaerobic digestion system (at a 10-liter scale) utilizing corncob biochar as biofilm support. The system operated on grease-trap wastewater and high-rate anaerobic digestion of this material

  3. Anaerobic Digestion Basics | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISOSource Heat 1 Table of ContentsAnthe Department'sAnaerobic

  4. Anaerobic digestion for methane generation and ammonia reforming for hydrogen production

    E-Print Network [OSTI]

    ,000,000 digesters, 2000 [14]), among other places [15,16]. These digesters operate to generate biogas, comprisingAnaerobic digestion for methane generation and ammonia reforming for hydrogen production Accepted 24 May 2013 Available online Keywords: Anaerobic digestion Ammonia Bioenergy Bioammonia Hydrogen

  5. EA-1907: Biogas Anaerobic Digester Facility, Oakley, Kansas

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal by DOE and USDA to provide funding to Western Plains Energy, LLC (WPE) to construct, purchase equipment, and operate a new Biogas Anaerobic Digester at WPE's existing Ethanol Facility, located at 3022 County Road 18, Grinnell Township (Oakley), Gove County, Kansas. The proposed facility will include a receiving building, digester, and related infrastructure. Based on the analysis in USDA's Final EA and FONSI, DOE has determined that DOE's proposed action does not constitute a major Federal action that would significantly affect the quality of the human or natural environment.

  6. Department of Agricultural and Biological Engineering Fall 2011 Small Scale Anaerobic Digestion by PENERGY Solutions

    E-Print Network [OSTI]

    Demirel, Melik C.

    by wood-fired boilers. By generating biogas through anaerobic digestion of swine manure, fuel can: A mechanical anaerobic digester to handle organic farm waste. A complete biogas collection system with hook Digestion by PENERGY Solutions Overview For most farmers in Pennsylvania, the growing season ends

  7. Optimizing the anaerobic digestion of microalgae in a coupled Terence Bayen

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    substrate) are digested and converted into biogas. One essential feature of the model is that the evolutionOptimizing the anaerobic digestion of microalgae in a coupled process Terence Bayen , Francis by light and an anaerobic digester. The mathematical model for the dynamics of the reactors takes

  8. Enhanced Anaerobic Digestion and Hydrocarbon Precursor Production...

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

    Digestion and Hydrocarbon Precursor Production Presentation by Meltem Urgun-Demirtas, Argonne National Laboratory, during the "Targeting High-Value Challenges" panel at the...

  9. Treatment program of organic matter by anaerobic digestion and composting (PTMOBC) (Quebec, Canada)

    Broader source: Energy.gov [DOE]

    The Program for processing of organic matter by anaerobic digestion and composting (PTMOBC) provides financial assistance to municipalities and the private sector for the installation of...

  10. Video Article Continuously-Stirred Anaerobic Digester to Convert Organic Wastes into

    E-Print Network [OSTI]

    Angenent, Lars T.

    Video Article Continuously-Stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System@cornell.edu URL: http://www.jove.com/video/3978/ DOI: 10.3791/3978 Keywords: Anaerobic Digestion, Bioenergy, Biogas, Methane, Organic Waste, Methanogenesis, Energy Crops, Date Published: // Citation: Usack

  11. A Design-Builder's Perspective: Anaerobic Digestion, Forest County...

    Office of Environmental Management (EM)

    County Potawatomi Community - A Case Study Presented by Jason Rieth, Industrial Construction Executive at Miron Construction at the April 16, 2013, Community-Scale Anaerobic...

  12. Contribution of Anaerobic Digesters to Emissions Mitigation and Electricity Generation Under U.S. Climate Policy

    E-Print Network [OSTI]

    Zaks, David P. M.

    Livestock husbandry in the U.S. significantly contributes to many environmental problems, including the release of methane, a potent greenhouse gas (GHG). Anaerobic digesters (ADs) break down organic wastes using bacteria ...

  13. Anaerobic Co-digestion of Chicken Processing Wastewater and Crude Glycerol from Biodiesel

    E-Print Network [OSTI]

    Foucault, Lucas Jose

    2011-10-21T23:59:59.000Z

    The main objective of this thesis was to study the anaerobic digestion (AD) of wastewater from a chicken processing facility and of crude glycerol from local biodiesel operations. The AD of these substrates was conducted in bench-scale reactors...

  14. Simulation of low temperature anaerobic digestion of dairy and swine manure q

    E-Print Network [OSTI]

    the primary biogas component at approximately 10°C. Thus, digestion Bioresource Technology 78 (2001) 127±131 qSimulation of low temperature anaerobic digestion of dairy and swine manure q D.T. Hill *, S performance data from digesters using animal waste in this temperature range have been lacking, thus allowing

  15. Anaerobic Digestion and Combined Heat and Power Study

    SciTech Connect (OSTI)

    Frank J. Hartz; Rob Taylor; Grant Davies

    2011-12-30T23:59:59.000Z

    One of the underlying objectives of this study is to recover the untapped energy in wastewater biomass. Some national statistics worth considering include: (1) 5% of the electrical energy demand in the US is used to treat municipal wastewater; (2) This carbon rich wastewater is an untapped energy resource; (3) Only 10% of wastewater treatment plants (>5mgd) recover energy; (4) Wastewater treatment plants have the potential to produce > 575 MW of energy nationwide; and (5) Wastewater treatment plants have the potential to capture an additional 175 MW of energy from waste Fats, Oils and Grease. The WSSC conducted this study to determine the feasibility of utilizing anaerobic digestion and combined heat and power (AD/CHP) and/or biosolids gasification and drying facilities to produce and utilize renewable digester biogas. Digester gas is considered a renewable energy source and can be used in place of fossil fuels to reduce greenhouse gas emissions. The project focus includes: (1) Converting wastewater Biomass to Electricity; (2) Using innovative technologies to Maximize Energy Recovery; and (3) Enhancing the Environment by reducing nutrient load to waterways (Chesapeake Bay), Sanitary Sewer Overflows (by reducing FOG in sewers) and Greenhouse Gas Emissions. The study consisted of these four tasks: (1) Technology screening and alternative shortlisting, answering the question 'what are the most viable and cost effective technical approaches by which to recover and reuse energy from biosolids while reducing disposal volume?'; (2) Energy recovery and disposal reduction potential verification, answering the question 'how much energy can be recovered from biosolids?'; (3) Economic environmental and community benefit analysis, answering the question 'what are the potential economic, environmental and community benefits/impacts of each approach?'; and (4) Recommend the best plan and develop a concept design.

  16. Anaerobic Co-digestion of Brown Water and Food Waste for Energy Recovery

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in a decentralized reactor via anaerobic digestion. The bio-methane potential of these substrates at different feed/inoculum ratios (F/Is) was studied using 100-mL serum bottles and biogas and methane production, pH and VS-digestion was also investigated to determine if further improvement of biogas yield could be achieved. Preliminary

  17. Review of composting and anaerobic digestion of municipal solid waste and a methodological proposal for a mid-size city

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Review of composting and anaerobic digestion of municipal solid waste and a methodological proposal-Milwaukee, Milwaukee, WI, USA ABSTRACT: Composting industry is a progressive and innovative industry that has been and processes on composting and anaerobic digestion are compiled, showing the versatility and multivariable

  18. Comparison of different liquid anaerobic digestion effluents as inocula and nitrogen sources for solid-state batch anaerobic digestion of corn stover

    SciTech Connect (OSTI)

    Xu Fuqing; Shi Jian [Department of Food, Agricultural and Biological Engineering, Ohio State University, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691 (United States); Lv Wen; Yu Zhongtang [Department of Animal Sciences, Ohio State University, Columbus, OH 43210 (United States); Li Yebo, E-mail: li.851@osu.edu [Department of Food, Agricultural and Biological Engineering, Ohio State University, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691 (United States)

    2013-01-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer Compared methane production of solid AD inoculated with different effluents. Black-Right-Pointing-Pointer Food waste effluent (FWE) had the largest population of acetoclastic methanogens. Black-Right-Pointing-Pointer Solid AD inoculated with FWE produced the highest methane yield at F/E ratio of 4. Black-Right-Pointing-Pointer Dairy waste effluent (DWE) was rich of cellulolytic and xylanolytic bacteria. Black-Right-Pointing-Pointer Solid AD inoculated with DWE produced the highest methane yield at F/E ratio of 2. - Abstract: Effluents from three liquid anaerobic digesters, fed with municipal sewage sludge, food waste, or dairy waste, were evaluated as inocula and nitrogen sources for solid-state batch anaerobic digestion of corn stover in mesophilic reactors. Three feedstock-to-effluent (F/E) ratios (i.e., 2, 4, and 6) were tested for each effluent. At an F/E ratio of 2, the reactor inoculated by dairy waste effluent achieved the highest methane yield of 238.5 L/kgVS{sub feed}, while at an F/E ratio of 4, the reactor inoculated by food waste effluent achieved the highest methane yield of 199.6 L/kgVS{sub feed}. The microbial population and chemical composition of the three effluents were substantially different. Food waste effluent had the largest population of acetoclastic methanogens, while dairy waste effluent had the largest populations of cellulolytic and xylanolytic bacteria. Dairy waste also had the highest C/N ratio of 8.5 and the highest alkalinity of 19.3 g CaCO{sub 3}/kg. The performance of solid-state batch anaerobic digestion reactors was closely related to the microbial status in the liquid anaerobic digestion effluents.

  19. An environmental assessment of recovering methane from municipal solid waste by anaerobic digestion

    SciTech Connect (OSTI)

    O'Leary, P.R.

    1989-01-01T23:59:59.000Z

    The development of an experimental process which produces synthetic natural gas (SNG) or biogas by anaerobic digestion of municipal solid waste (MSW) is evaluated. This technology, if implemented, would be utilized in lieu of incineration or directly landfilling waste. An environmental assessment describing the principal impacts associated with operating the MSW anaerobic digestion process is presented. Variations in process configurations provide for SNG or electricity production and digester residue incineration, composting, or landfilling. Four process configuration are compared to the conventional solid waste disposal alternative of mass burn incineration and landfilling. Emissions are characterized, effluents quantified, and landfill areas predicted. The quantity of SNG and electricity recovered, and aluminum and ferrous metals recycled is predicted along with the emissions and effluents avoided by recovering energy and recycling metals. Air emissions are the primary on-site concern with the anaerobic digestion process. However, when compared to mass burn incineration, the projected particulate emissions for the anaerobic digestion process range from 2.9 {times} 10{sup {minus}6} to 2.6 {times} {sup 10{minus}5} pounds per ton of waste vs. 3.3 {times} 10{sup {minus}5} pounds per ton for mass burn. SO{sub 2}, NO{sub x}, and PCCD emissions have a similar relationship.

  20. The viscoelastic behaviour of raw and anaerobic digested sludge: strong similarities with soft-glassy materials

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 The viscoelastic behaviour of raw and anaerobic digested sludge: strong similarities with soft confronted with a dramatically increasing flow of sewage sludge. To improve treatment efficiency, process reliable flow properties to simulate the process, this work is an attempt to approach sludge rheological

  1. Research review paper1 Anaerobic digestion of microalgae as a necessary step to make3

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Research review paper1 2 Anaerobic digestion of microalgae as a necessary step to make3 Environnement, Avenue des Etangs, Narbonne F-11100, France11 12 Abstract13 14 The potential of microalgae process that can recover more energy than the energy from the cell lipids. Three main21 bottlenecks

  2. anaerobic psychrophilic enrichment: Topics by E-print Network

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

    of anaerobic digestion MIT - DSpace Summary: Anaerobic digesters convert organic waste (agricultural and food waste, animal or human manure, and other organic waste), into...

  3. Greenhouse and laboratory studies on the effects of an anaerobic digester sludge on growth and nutrient uptake of sorghum

    E-Print Network [OSTI]

    Vincent, John Cooper

    1989-01-01T23:59:59.000Z

    GREENHOUSE AND LABORATORI STUDIES ON THE EFFECTS OF AN ANAEROBIC DIGESTER SLUDGE ON GROWTH AND NUTRIENT UPTAKE OF SORGHUM A Thesis By John Cooper Vincent Submitted to the Office of Graduate Studies Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1989 Major Subject: Agronomy GREENHOUSE AND LABORATORy STUDIES ON THE EFFECTS OF AN ANAEROBIC DIGESTER SLUDGE ON GROWTH AND NUTRIENT UPTAKE OF SORGHUM A Thesis by John Cooper Vincent Approved...

  4. Characterization and environmental studies of Pompano Beach anaerobic digestion facility. Annual report

    SciTech Connect (OSTI)

    Sengupta, S; Gerrish, H P; Wong, K F; Nemerow, N; Daly, Jr, E L; Farooq, S; Chriswell, C

    1980-08-01T23:59:59.000Z

    Municipal solid wastes contain numerous substances of potential environmental concern. While some understanding of the composition of raw municipal waste and its leachate products is available, no information regarding characteristics of solid, liquid and gaseous outputs from anaerobic digestion exists. If centralized anaerobic digestion plants are to be environmentally viable, the characteristics and environmental effects of effluents from these plants must be acceptable. The environmental concerns are particularly acute where ground water supplies are precariously low and the water table is high, South Florida is such a location. A characterization and environmental study was initiated by the Resource Recovery Group on August 1978. The specific objectives are: (1) systematic characterization of solid, liquid and gaseous inputs and outputs; (2) investigations of leaching characteristic of output solid and liquid effluents, and the transport of pollutants to and through ground water systems; and (3) analysis of environmental and process parameters to obtain causal relationships.

  5. Economic implications of anaerobic digesters on dairy farms in Texas

    E-Print Network [OSTI]

    Jackson, Randy Scott, Jr.

    2007-09-17T23:59:59.000Z

    -selling price, digesters are less economically feasible than current waste management strategies, lagoons, even after considering potential environmental penalties. However, selling electricity and capturing by-product heat for cost savings makes the digester...

  6. Enhanced anaerobic treatment of CSTR-digested effluent from chicken manure: The effect of ammonia inhibition

    SciTech Connect (OSTI)

    Liu Zhanguang; Zhou Xuefei [Key Laboratory of Yangtze Water Environment of Ministry of Education, State Key Laboratory of Pollution and Resource Reuse, Tongji University, Shanghai 200092 (China); Zhang Yalei, E-mail: zhangyalei2003@163.com [Key Laboratory of Yangtze Water Environment of Ministry of Education, State Key Laboratory of Pollution and Resource Reuse, Tongji University, Shanghai 200092 (China); Zhu Hongguang [Institute of Modern Agricultural Science and Engineering, National Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092 (China)

    2012-01-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer Enhanced anaerobic treatment of CSTR-digested effluent from chicken manure. Black-Right-Pointing-Pointer The SCOD/TAN (soluble COD/total ammonia nitrogen) ratio was key controlling factor. Black-Right-Pointing-Pointer The threshold of the SCOD/TAN ratio was 2.4 at an influent pH of 8.5-9. - Abstract: The effect of ammonia inhibition was evaluated during the enhanced anaerobic treatment of digested effluent from a 700 m{sup 3} chicken-manure continuous stirred tank reactor (CSTR). A 12.3 L internal circulation (IC) reactor inoculated with an anaerobic granular sludge and operated at 35 {+-} 1 Degree-Sign C was employed for the investigation. With a corresponding organic loading rate of 1.5-3.5 kg-COD/m{sup 3} d over a hydraulic retention time of 1.5 d, a maximum volumetric biogas production rate of 1.2 m{sup 3}/m{sup 3} d and TCOD (total COD) removal efficiency ranging from 70% to 80% was achieved. However, the continual increase in the influent TAN content led to ammonia inhibition in the methanogenesis system. The SCOD/TAN (soluble COD/total ammonia nitrogen) ratio was presented to be the key controlling factor for the anaerobic treatment of semi-digested chicken manure, and further validation through shock loading and ammonia inhibition experiments was conducted. The threshold value of the SCOD/TAN ratio was determined to be 2.4 (corresponding to a TAN of 1250 mg/L) at an influent pH of 8.5-9.

  7. Digestion of frozen/thawed food waste in the hybrid anaerobic solid-liquid system

    SciTech Connect (OSTI)

    Stabnikova, O. [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)], E-mail: costab@ntu.edu.sg; Liu, X.Y.; Wang, J.Y. [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

    2008-07-01T23:59:59.000Z

    The hybrid anaerobic solid-liquid (HASL) system, which is a modified two-phase anaerobic digester, is to be used in an industrial scale operation to minimize disposal of food waste at incineration plants in Singapore. The aim of the present research was to evaluate freezing/thawing of food waste as a pre-treatment for its anaerobic digestion in the HASL system. The hydrolytic and fermentation processes in the acidogenic reactor were enhanced when food waste was frozen for 24 h at -20 deg. C and then thawed for 12 h at 25 deg. C (experiment) in comparison with fresh food waste (control). The highest dissolved COD concentrations in the leachate from the acidogenic reactors were 16.9 g/l on day 3 in the control and 18.9 g/l on day 1 in the experiment. The highest VFA concentrations in the leachate from the acidogenic reactors were 11.7 g/l on day 3 in the control and 17.0 g/l on day 1 in the experiment. The same volume of methane was produced during 12 days in the control and 7 days in the experiment. It gave the opportunity to diminish operational time of batch process by 42%. The effect of freezing/thawing of food waste as pre-treatment for its anaerobic digestion in the HASL system was comparable with that of thermal pre-treatment of food waste at 150 deg. C for 1 h. However, estimation of energy required either to heat the suspended food waste to 150 deg. C or to freeze the same quantity of food waste to -20 deg. C showed that freezing pre-treatment consumes about 3 times less energy than thermal pre-treatment.

  8. Decomposition of Fresh and Anaerobically Digested Plant Biomass in Soil1 K. K. MOORHEAD, D. A, GRAETZ, AND K. R. REDDY2

    E-Print Network [OSTI]

    Florida, University of

    Decomposition of Fresh and Anaerobically Digested Plant Biomass in Soil1 K. K. MOORHEAD, D. A to produce CH4 or added to soil directly as an amendment.In this study, fresh and anaerobically digested. The fresh plant biomassand digested biomasssludgewere freeze- dried and groundto passa0.84-mm sieve

  9. Benefits of supplementing an industrial waste anaerobic digester with energy crops for increased biogas production

    SciTech Connect (OSTI)

    Nges, Ivo Achu, E-mail: Nges.Ivo_Achu@biotek.lu.se [Department of Biotechnology, Lund University, P.O. Box 124, SE 221 00 Lund (Sweden); Escobar, Federico; Fu Xinmei; Bjoernsson, Lovisa [Department of Biotechnology, Lund University, P.O. Box 124, SE 221 00 Lund (Sweden)

    2012-01-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer This study demonstrates the feasibility of co-digestion food industrial waste with energy crops. Black-Right-Pointing-Pointer Laboratory batch co-digestion led to improved methane yield and carbon to nitrogen ratio as compared to mono-digestion of industrial waste. Black-Right-Pointing-Pointer Co-digestion was also seen as a means of degrading energy crops with nutrients addition as crops are poor in nutrients. Black-Right-Pointing-Pointer Batch co-digestion methane yields were used to predict co-digestion methane yield in full scale operation. Black-Right-Pointing-Pointer It was concluded that co-digestion led an over all economically viable process and ensured a constant supply of feedstock. - Abstract: Currently, there is increasing competition for waste as feedstock for the growing number of biogas plants. This has led to fluctuation in feedstock supply and biogas plants being operated below maximum capacity. The feasibility of supplementing a protein/lipid-rich industrial waste (pig manure, slaughterhouse waste, food processing and poultry waste) mesophilic anaerobic digester with carbohydrate-rich energy crops (hemp, maize and triticale) was therefore studied in laboratory scale batch and continuous stirred tank reactors (CSTR) with a view to scale-up to a commercial biogas process. Co-digesting industrial waste and crops led to significant improvement in methane yield per ton of feedstock and carbon-to-nitrogen ratio as compared to digestion of the industrial waste alone. Biogas production from crops in combination with industrial waste also avoids the need for micronutrients normally required in crop digestion. The batch co-digestion methane yields were used to predict co-digestion methane yield in full scale operation. This was done based on the ratio of methane yields observed for laboratory batch and CSTR experiments compared to full scale CSTR digestion of industrial waste. The economy of crop-based biogas production is limited under Swedish conditions; therefore, adding crops to existing industrial waste digestion could be a viable alternative to ensure a constant/reliable supply of feedstock to the anaerobic digester.

  10. anaerobic treatment process: Topics by E-print Network

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

    PROCESSES Computer Technologies and Information Sciences Websites Summary: on a pilot-scale anaerobic bioreactor with computer monitoring system. Key words: Anaerobic digestion...

  11. anaerobic culture system: Topics by E-print Network

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

    Upflow anaerobic sludge blanket reactors for treatment of wastewater from the brewery industry MIT - DSpace Summary: Anaerobic digestion can be utilized to convert industrial...

  12. Optimizing the anaerobic digestion of microalgae in a coupled process Terence Bayen1,4 and Francis Mairet2 and Pierre Martinon3 and Matthieu Sebbah4

    E-Print Network [OSTI]

    Boyer, Edmond

    microalgae biomass into biogas [4]. This process not only recovers the energy stored in biomass, but alsoOptimizing the anaerobic digestion of microalgae in a coupled process Terence Bayen1,4 and Francis the production of methane in a bioreactor coupling an anaerobic digester and a culture of micro-algae limited

  13. Data summary of municipal solid waste management alternatives. Volume 10, Appendix H: Anaerobic digestion of MSW

    SciTech Connect (OSTI)

    none,

    1992-10-01T23:59:59.000Z

    While municipal solid waste (MSW) thermoconversion and recycling technologies have been described in Appendices A through E, this appendix addresses the role of bioconversion technologies in handling the organic fraction in MSW and sewage sludge. Much of the organic matter in MSW, consisting mainly of paper, food waste, and yard waste, has potential for conversion, along with sewage sludge, through biochemical processes to methane and carbon dioxide providing a measurable, renewable energy resource potential. The gas produced may be treated for removal of carbon dioxide and water, leaving pipeline quality gas. The process also has the potential for producing a stabilized solid product that may be suitable as a fuel for combustion or used as a compost fertilizer. Anaerobic digestion can occur naturally in an uncontrolled environment such as a landfill, or it can occur in a controlled environment such as a confined vessel. Landfill gas production is discussed in Appendix F. This appendix provides information on the anaerobic digestion process as it has been applied to produce methane from the organic fraction of MSW in enclosed, controlled reactors.

  14. High-solids anaerobic digestion of mixed municipal and industrial waste

    SciTech Connect (OSTI)

    Oleszkiewicz, J.A.; Poggi-Varaldo, H.M. [Univ. of Manitoba, Winnipeg, Manitoba (Canada). Dept. of Civil Engineering

    1997-11-01T23:59:59.000Z

    Laboratory studies on dry anaerobic digestion of mixture of paper, kitchen food waste, and sewage sludge have demonstrated the optimum performance at total solids (TS) at the range of 30--35% TS. The thermophilic process (at 55 C) was found to be superior to a mesophilic (35 C) one, both in terms of volatile solid (VS) reduction and specific gas production, but was somewhat less stable at short mass retention times (MRT). The efficiency of total volatile solids destruction and the decrease in the oxygen demand were found to be proportional to the product of the mass retention time and temperature (d {center_dot} C). Pilot studies, conducted on a mixture of sewage sludge, mixed paper, food waste, and solids from a potato processing conducted on site in Portage la Prairie, Manitoba, Canada, have demonstrated the feasibility of running the process at loads exceeding 9 kg TS/m{sup 3} {center_dot} d and producing biogas at 140 m{sup 3} of wet solids fed to the composter. The residual oxygen demand per unit mass of the dry compost was 20 mg O{sub 2}/g {center_dot} h, which indicated a need for aerobic postcuring of the anaerobically produced compost.

  15. A model of anaerobic digestion for biogas production using Abel equations

    E-Print Network [OSTI]

    Primitivo B. Acosta-Humánez; Maximiliano Machado-Higuera; Alexander V. Sinitsyn

    2014-11-27T23:59:59.000Z

    We consider a nonlinear mathematical model for the study of anaerobic digestion processes. We decompose the original system of nonlinear ordinary differential equations into subsystems. For these subsystems we prove existence of lower and upper solutions in reverse order for one of the va\\-ria\\-bles. The upper and lower solutions are constructed in analytical form. Furthermore, the upper solutions of subsystem for feeding bacteria are related with solutions of Abel equations of the first kind. Using numerical and theoretical arguments we examine how to obtain upper and lower solutions approximated to the numerical solution of the system. In this work we establish special techniques of lower-upper solution, which includes reverse order for non monotone systems, in contrast to the techniques used by H.L. Smith and P. Waltman on their monograph.

  16. Anaerobic Hydrocarbon Degradation in

    E-Print Network [OSTI]

    California at Berkeley, University of

    Anaerobic Hydrocarbon Degradation in Petroleum-Contaminated Harbor Sediments under Sulfate of iron(III) oxide to stimulate in- situ hydrocarbon degradation in anaerobic petroleum- contaminated did not stimulate anaerobic hydrocarbon oxidation. Exposure of the sediment to air [to reoxidize Fe

  17. Nitrogen availability and indirect measurements of greenhouse gas emissions from aerobic and anaerobic biowaste digestates applied to agricultural soils

    SciTech Connect (OSTI)

    Rigby, H.; Smith, S.R., E-mail: s.r.smith@imperial.ac.uk

    2013-12-15T23:59:59.000Z

    Highlights: • Nitrogen release in digestate-amended soil depends on the digestate type. • Overall N release is modulated by digestate mineral and mineralisable N contents. • Microbial immobilisation does not influence overall release of digestate N in soil. • Digestate physical properties and soil type interact to affect overall N recovery. • High labile C inputs in digestate may promote denitrification in fine-textured soil. - Abstract: Recycling biowaste digestates on agricultural land diverts biodegradable waste from landfill disposal and represents a sustainable source of nutrients and organic matter (OM) to improve soil for crop production. However, the dynamics of nitrogen (N) release from these organic N sources must be determined to optimise their fertiliser value and management. This laboratory incubation experiment examined the effects of digestate type (aerobic and anaerobic), waste type (industrial, agricultural and municipal solid waste or sewage sludge) and soil type (sandy loam, sandy silt loam and silty clay) on N availability in digestate-amended soils and also quantified the extent and significance of the immobilisation of N within the soil microbial biomass, as a possible regulatory mechanism of N release. The digestate types examined included: dewatered, anaerobically digested biosolids (DMAD); dewatered, anaerobic mesophilic digestate from the organic fraction of municipal solid waste (DMADMSW); liquid, anaerobic co-digestate of food and animal slurry (LcoMAD) and liquid, thermophilic aerobic digestate of food waste (LTAD). Ammonium chloride (NH{sub 4}Cl) was included as a reference treatment for mineral N. After 48 days, the final, maximum net recoveries of mineral N relative to the total N (TN) addition in the different digestates and unamended control treatments were in the decreasing order: LcoMAD, 68%; LTAD, 37%, DMAD, 20%; and DMADMSW, 11%. A transient increase in microbial biomass N (MBN) was observed with LTAD application, indicating greater microbial activity in amended soil and reflecting the lower stability of this OM source, compared to the other, anaerobic digestate types, which showed no consistent effects on MBN compared to the control. Thus, the overall net release of digestate N in different soil types was not regulated by N transfer into the soil microbial biomass, but was determined primarily by digestate properties and the capacity of the soil type to process and turnover digestate N. In contrast to the sandy soil types, where nitrate (NO{sub 3}{sup -}) concentrations increased during incubation, there was an absence of NO{sub 3}{sup -} accumulation in the silty clay soil amended with LTAD and DMADMSW. This provided indirect evidence for denitrification activity and the gaseous loss of N, and the associated increased risk of greenhouse gas emissions under certain conditions of labile C supply and/or digestate physical structure in fine-textured soil types. The significance and influence of the interaction between soil type and digestate stability and physical properties on denitrification processes in digestate-amended soils require urgent investigation to ensure management practices are appropriate to minimise greenhouse gas emissions from land applied biowastes.

  18. Semi-continuous anaerobic co-digestion of thickened waste activated sludge and fat, oil and grease

    SciTech Connect (OSTI)

    Wan Caixia; Zhou Quancheng; Fu Guiming [Department of Food, Agricultural, and Biological Engineering, Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691-4096 (United States); Li Yebo, E-mail: li.851@osu.edu [Department of Food, Agricultural, and Biological Engineering, Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691-4096 (United States)

    2011-08-15T23:59:59.000Z

    Highlights: > Co-digestion of thickened waste activated sludge (TWAS) with fat, oil and grease (FOG). > Co-digestion of TWAS and FOG at 64% VS increased biogas production by 137%. > FOG addition ratio at 74% of total VS caused inhibition of the anaerobic digestion process. > Micronutrients addition did not significantly improve the biogas production and digestion stabilization. - Abstract: Co-digestion of thickened waste activated sludge (TWAS) and fat, oil and grease (FOG) was conducted semi-continuously under mesophilic conditions. The results showed that daily methane yield at the steady state was 598 L/kg VS{sub added} when TWAS and FOG (64% of total VS) were co-digested, which was 137% higher than that obtained from digestion of TWAS alone. The biogas composition was stabilized at a CH{sub 4} and CO{sub 2} content of 66.8% and 29.5%, respectively. Micronutrients added to co-digestion did not improve the biogas production and digestion stabilization. With a higher addition of FOG (74% of total VS), the digester initially failed but was slowly self-recovered; however, the methane yield was only about 50% of a healthy reactor with the same organic loading rate.

  19. anaerobic odontogenic infections: Topics by E-print Network

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

    producers to operate an anaerobic digester with minimum technological knowhow and for the cost of a conventional (more) Giard, David 2011-01-01 13 ANAEROBIC CULTURE METHODS IN A...

  20. Chemical and microbiological hazards associated with recycling of anaerobic digested residue intended for agricultural use

    SciTech Connect (OSTI)

    Govasmark, Espen, E-mail: espen.govasmark@bioforsk.no [Norwegian Institute for Agricultural and Environmental Research - Soil and Environment, Fredrik A. Dahlsvei 20, NO-1432 Aas (Norway); Staeb, Jessica [Universitaet Stuttgart, Institut fuer Siedlungswasserbau, Wasserguete- und Abfallwirtschaft, Abteilung Hydrochemie, Bandtaele 2, D-70569 Stuttgart (Buesnau) (Germany); Holen, Borge [Norwegian Institute for Agricultural and Environmental Research - Plant Health, Hogskoleveien 7, NO-1432 Aas (Norway); Hoornstra, Douwe [University of Helsinki, Department of Applied Chemistry and Microbiology, Faculty of Agriculture and Forestry, Biocenter, Viikinkaari 9, FIN-00014 (Finland); Nesbakk, Tommy [Mjosanlegget AS, Roverudmyra Miljostasjon, Asmarkveien 301, NO-2600 Lillehammer (Norway); Salkinoja-Salonen, Mirja [University of Helsinki, Department of Applied Chemistry and Microbiology, Faculty of Agriculture and Forestry, Biocenter, Viikinkaari 9, FIN-00014 (Finland)

    2011-12-15T23:59:59.000Z

    In the present study, three full-scale biogas plants (BGP) were investigated for the concentration of heavy metals, organic pollutants, pesticides and the pathogenic bacteria Bacillus cereus and Escherichia coli in the anaerobically digested residues (ADR). The BGPs mainly utilize source-separated organic wastes and industrial food waste as energy sources and separate the ADR into an ADR-liquid and an ADR-solid fraction by centrifugation at the BGP. According to the Norwegian standard for organic fertilizers, the ADR were classified as quality 1 mainly because of high zinc (132-422 mg kg{sup -1} DM) and copper (23-93 mg kg{sup -1} DM) concentrations, but also because of high cadmium (0.21-0.60 mg kg{sup -1} DM) concentrations in the liquid-ADR. In the screening of organic pollutants, only DEHP (9.7-62.1 mg kg{sup -1}) and {Sigma} PAH 16 (0.2-1.98 mg kg{sup -1} DM) were detected in high concentrations according to international regulations. Of the 250 pesticides analyzed, 11 were detected, but only imazalil (<0.30-5.77 mg kg{sup -1} DM) and thiabendazol (<0.14-0.73 mg kg{sup -1} DM) were frequently detected in the ADR-fiber. Concentrations of imazalil and thiabendazol were highest during the winter months, due to a high consumption of citrus fruits in Norway in this period. Ten percent of the ADR-liquid samples contained cereulide-producing B. cereus, whereas no verotoxigenic E. coli was detected. The authors conclude that the risk of chemical and bacterial contamination of the food chain or the environment from agricultural use of ADR seems low.

  1. Water Sci Technol. 2014; 69(6):1282-8. doi: 10.2166/wst.2014.016. Effect of anaerobic digestion at 35, 55 and 60 C on pharmaceuticals and organic

    E-Print Network [OSTI]

    Cooper, Robin L.

    Water Sci Technol. 2014; 69(6):1282-8. doi: 10.2166/wst.2014.016. Effect of anaerobic digestion and polycyclic aromatic hydrocarbons (PAHs) during anaerobic digestion of mixed primary and waste of these compounds was seen during treatment, but for individual substances some reduction occurred. The PAHs were

  2. Performance evaluation of an anaerobic/aerobic landfill-based digester using yard waste for energy and compost production

    SciTech Connect (OSTI)

    Yazdani, Ramin, E-mail: ryazdani@sbcglobal.net [Yolo County Planning and Public Works Department, Division of Integrated Waste Management, Woodland, CA 95776 (United States); Civil and Environmental Engineering, University of California, One Shields Avenue, Ghausi Hall, Davis, CA 95616 (United States); Barlaz, Morton A., E-mail: barlaz@eos.ncsu.edu [Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695 (United States); Augenstein, Don, E-mail: iemdon@aol.com [Institute for Environmental Management, Inc., Palo Alto, CA 94306 (United States); Kayhanian, Masoud, E-mail: mdkayhanian@ucdavis.edu [Civil and Environmental Engineering, University of California, One Shields Avenue, Ghausi Hall, Davis, CA 95616 (United States); Tchobanoglous, George, E-mail: gtchobanoglous@ucdavis.edu [Civil and Environmental Engineering, University of California, One Shields Avenue, Ghausi Hall, Davis, CA 95616 (United States)

    2012-05-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer Biochemical methane potential decreased by 83% during the two-stage operation. Black-Right-Pointing-Pointer Net energy produced was 84.3 MWh or 46 kWh per million metric tons (Mg). Black-Right-Pointing-Pointer The average removal efficiency of volatile organic compounds (VOCs) was 96-99%. Black-Right-Pointing-Pointer The average removal efficiency of non-methane organic compounds (NMOCs) was 68-99%. Black-Right-Pointing-Pointer The two-stage batch digester proved to be simple to operate and cost-effective. - Abstract: The objective of this study was to evaluate a new alternative for yard waste management by constructing, operating and monitoring a landfill-based two-stage batch digester (anaerobic/aerobic) with the recovery of energy and compost. The system was initially operated under anaerobic conditions for 366 days, after which the yard waste was aerated for an additional 191 days. Off gas generated from the aerobic stage was treated by biofilters. Net energy recovery was 84.3 MWh, or 46 kWh per million metric tons of wet waste (as received), and the biochemical methane potential of the treated waste decreased by 83% during the two-stage operation. The average removal efficiencies of volatile organic compounds and non-methane organic compounds in the biofilters were 96-99% and 68-99%, respectively.

  3. anaerobic biological reactors: Topics by E-print Network

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

    Peter R. 97 Department of Agricultural and Biological Engineering Fall 2011 Small Scale Anaerobic Digestion by PENERGY Solutions Materials Science Websites Summary: with less...

  4. anaerobic biological treatment: Topics by E-print Network

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

    results for an anaerobic digestion system operated at an existing wastewater treatment plant. Based on scale-up evaluation, the test system should yield an energy balance with...

  5. anaerobic enrichment culture: Topics by E-print Network

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

    producers to operate an anaerobic digester with minimum technological knowhow and for the cost of a conventional (more) Giard, David 2011-01-01 34 Parameter identification in...

  6. Upflow anaerobic sludge blanket reactors for treatment of wastewater from the brewery industry

    E-Print Network [OSTI]

    Scampini, Amanda C

    2010-01-01T23:59:59.000Z

    Anaerobic digestion can be utilized to convert industrial wastewater into clean water and energy. The goal of this project was to set up lab-scale anaerobic digesters to collect data that will be used to develop and validate ...

  7. anaerobic bacteria thermoanaerobacter: Topics by E-print Network

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

    for methane production by anaerobic digestion of animal manures. Experiences with design, construction, and operation of a two-stage heated continuous-feed digester for a herd of...

  8. anaerobic thermophiles final: Topics by E-print Network

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

    for methane production by anaerobic digestion of animal manures. Experiences with design, construction, and operation of a two-stage heated continuous-feed digester for a herd of...

  9. anaerobic extreme thermophilic: Topics by E-print Network

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

    for methane production by anaerobic digestion of animal manures. Experiences with design, construction, and operation of a two-stage heated continuous-feed digester for a herd of...

  10. Pilot-scale anaerobic co-digestion of municipal biomass waste and waste activated sludge in China: Effect of organic loading rate

    SciTech Connect (OSTI)

    Liu Xiao, E-mail: liuxiao07@mails.tsinghua.edu.cn [School of Environment, Tsinghua University, Beijing 100084 (China); Wang Wei; Shi Yunchun; Zheng Lei [School of Environment, Tsinghua University, Beijing 100084 (China); Gao Xingbao [Chinese Research Academy of Environmental Sciences, Beijing 100012 (China); Qiao Wei [State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249 (China); Zhou Yingjun [Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nisikyo-ku, Kyoto 615-8540 (Japan)

    2012-11-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer Co-digestion of municipal biomass waste (MBW) and waste activated sludge (WAS) was examined on a pilot-scale reactor. Black-Right-Pointing-Pointer System performance and stability under OLR of 1.2, 2.4, 3.6, 4.8, 6.0 and 8.0 kg VS (m{sup 3} d){sup -1} were analyzed. Black-Right-Pointing-Pointer A maximum methane production rate of 2.94 m{sup 3} (m{sup 3} d){sup -1} was achieved at OLR of 8.0 kg VS (m{sup 3} d){sup -1} and HRT of 15d. Black-Right-Pointing-Pointer With the increasing OLRs, pH values, VS removal rate and methane concentration decreased and VFA increased. Black-Right-Pointing-Pointer The changing of biogas production rate can be a practical approach to monitor and control anaerobic digestion system. - Abstract: The effects of organic loading rate on the performance and stability of anaerobic co-digestion of municipal biomass waste (MBW) and waste activated sludge (WAS) were investigated on a pilot-scale reactor. The results showed that stable operation was achieved with organic loading rates (OLR) of 1.2-8.0 kg volatile solid (VS) (m{sup 3} d){sup -1}, with VS reduction rates of 61.7-69.9%, and volumetric biogas production of 0.89-5.28 m{sup 3} (m{sup 3} d){sup -1}. A maximum methane production rate of 2.94 m{sup 3} (m{sup 3} d){sup -1} was achieved at OLR of 8.0 kg VS (m{sup 3} d){sup -1} and hydraulic retention time of 15 days. With increasing OLRs, the anaerobic reactor showed a decrease in VS removal rate, average pH value and methane concentration, and a increase of volatile fatty acid concentration. By monitoring the biogas production rate (BPR), the anaerobic digestion system has a higher acidification risk under an OLR of 8.0 kg VS (m{sup 3} d){sup -1}. This result remarks the possibility of relating bioreactor performance with BPR in order to better understand and monitor anaerobic digestion process.

  11. Reduction of Antibiotic-Resistant Bacteria Present in Food Animal Manures by Composting and Anaerobic Digestion

    E-Print Network [OSTI]

    Jones, Michelle

    Reduction of Antibiotic-Resistant Bacteria Present in Food Animal Manures by Composting digestion and composting at mesophilic or moderate temperature significantly reduced the antimicrobial resistance in animal manure. The most effective treatment was composting at thermophilic or high temperature

  12. Dynamic estimation of specific growth rates and concentrations of bacteria for the anaerobic digestion

    E-Print Network [OSTI]

    Boyer, Edmond

    measured quantities ­ the dilution rate and the flow rates of methane and carbon dioxide in the biogas by microorganisms into biogas (methane and carbon dioxide) and digestate (natural manure) in the absence of oxygen [1, 2, 6]. The biogas is an additional energy source and the methane is a greenhouse gas

  13. ANAEROBIC BIOLOGICAL TREATMENT OF PRODUCED WATER

    SciTech Connect (OSTI)

    John R. Gallagher

    2001-07-31T23:59:59.000Z

    During the production of oil and gas, large amounts of water are brought to the surface and must be disposed of in an environmentally sensitive manner. This is an especially difficult problem in offshore production facilities where space is a major constraint. The chief regulatory criterion for produced water is oil and grease. Most facilities have little trouble meeting this criterion using conventional oil-water separation technologies. However, some operations have significant amounts of naphthenic acids in the water that behave as oil and grease but are not well removed by conventional technologies. Aerobic biological treatment of naphthenic acids in simulated-produced water has been demonstrated by others; however, the system was easily overloaded by the large amounts of low-molecular-weight organic acids often found in produced waters. The objective of this research was to determine the ability of an anaerobic biological system to treat these organic acids in a simulated produced water and to examine the potential for biodegradation of the naphthenic acids in the anaerobic environment. A small fixed-film anaerobic biological reactor was constructed and adapted to treat a simulated produced water. The bioreactor was tubular, with a low-density porous glass packing material. The inocula to the reactor was sediment from a produced-water holding pond from a municipal anaerobic digester and two salt-loving methanogenic bacteria. During start-up, the feed to the reactor contained glucose as well as typical produced-water components. When glucose was used, rapid gas production was observed. However, when glucose was eliminated and the major organic component was acetate, little gas was generated. Methane production from acetate may have been inhibited by the high salt concentrations, by sulfide, or because of the lack, despite seeding, of microbes capable of converting acetate to methane. Toluene, a minor component of the produced water (0.1 g/L) was removed in the reactor. Batch tests were conducted to examine naphthenic acid biodegradability under several conditions. The conditions used were seed from the anaerobic reactor, wetland sediments under aerobic and anaerobic conditions, and a sterile control. The naphthenic acid was from a commercial source isolated from Gulf Coast petroleum as was dosed at 2 mg/mL. The incubations were for 30 days at 30 C. The results showed that the naphthenic acids were not biodegraded under anaerobic conditions, but were degraded under aerobic conditions. Despite poor performance of the anaerobic reactor, it remains likely that anaerobic treatment of acetate, toluene, and, potentially, other produced-water components is feasible.

  14. Waste-to-wheel analysis of anaerobic-digestion-based renewable natural gas pathways with the GREET model.

    SciTech Connect (OSTI)

    Han, J.; Mintz, M.; Wang, M. (Energy Systems)

    2011-12-14T23:59:59.000Z

    In 2009, manure management accounted for 2,356 Gg or 107 billion standard cubic ft of methane (CH{sub 4}) emissions in the United States, equivalent to 0.5% of U.S. natural gas (NG) consumption. Owing to the high global warming potential of methane, capturing and utilizing this methane source could reduce greenhouse gas (GHG) emissions. The extent of that reduction depends on several factors - most notably, how much of this manure-based methane can be captured, how much GHG is produced in the course of converting it to vehicular fuel, and how much GHG was produced by the fossil fuel it might displace. A life-cycle analysis was conducted to quantify these factors and, in so doing, assess the impact of converting methane from animal manure into renewable NG (RNG) and utilizing the gas in vehicles. Several manure-based RNG pathways were characterized in the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model, and their fuel-cycle energy use and GHG emissions were compared to petroleum-based pathways as well as to conventional fossil NG pathways. Results show that despite increased total energy use, both fossil fuel use and GHG emissions decline for most RNG pathways as compared with fossil NG and petroleum. However, GHG emissions for RNG pathways are highly dependent on the specifics of the reference case, as well as on the process energy emissions and methane conversion factors assumed for the RNG pathways. The most critical factors are the share of flared controllable CH{sub 4} and the quantity of CH{sub 4} lost during NG extraction in the reference case, the magnitude of N{sub 2}O lost in the anaerobic digestion (AD) process and in AD residue, and the amount of carbon sequestered in AD residue. In many cases, data for these parameters are limited and uncertain. Therefore, more research is needed to gain a better understanding of the range and magnitude of environmental benefits from converting animal manure to RNG via AD.

  15. Design and study of a risk management criterion for an unstable anaerobic wastewater

    E-Print Network [OSTI]

    Bernard, Olivier

    Design and study of a risk management criterion for an unstable anaerobic wastewater treatment an unstable biological process used for wastewater treat- ment. This anaerobic digestion ecosystem can have digestion, Nonlinear systems diagnosis 1 Introduction and motivation Control of biological systems is a very

  16. Anaerobic co-digestion of the organic fraction of municipal solid waste with FOG waste from a sewage treatment plant: Recovering a wasted methane potential and enhancing the biogas yield

    SciTech Connect (OSTI)

    Martin-Gonzalez, L., E-mail: lucia.martin@uab.ca [Departament d'Enginyeria Quimica, Universitat Autonoma de Barcelona, 08193 Bellaterra (Spain); Colturato, L.F. [Departament d'Enginyeria Quimica, Universitat Autonoma de Barcelona, 08193 Bellaterra (Spain); Font, X.; Vicent, T. [Departament d'Enginyeria Quimica, Universitat Autonoma de Barcelona, 08193 Bellaterra (Spain); Institut de Ciencia i Tecnologia Ambiental (ICTA) Universitat Autonoma de Barcelona, 08193 Bellaterra (Spain)

    2010-10-15T23:59:59.000Z

    Anaerobic digestion is applied widely to treat the source collected organic fraction of municipal solid wastes (SC-OFMSW). Lipid-rich wastes are a valuable substrate for anaerobic digestion due to their high theoretical methane potential. Nevertheless, although fat, oil and grease waste from sewage treatment plants (STP-FOGW) are commonly disposed of in landfill, European legislation is aimed at encouraging more effective forms of treatment. Co-digestion of the above wastes may enhance valorisation of STP-FOGW and lead to a higher biogas yield throughout the anaerobic digestion process. In the present study, STP-FOGW was evaluated as a co-substrate in wet anaerobic digestion of SC-OFMSW under mesophilic conditions (37 {sup o}C). Batch experiments carried out at different co-digestion ratios showed an improvement in methane production related to STP-FOGW addition. A 1:7 (VS/VS) STP-FOGW:SC-OFMSW feed ratio was selected for use in performing further lab-scale studies in a 5 L continuous reactor. Biogas yield increased from 0.38 {+-} 0.02 L g VS{sub feed}{sup -1} to 0.55 {+-} 0.05 L g VS{sub feed}{sup -1} as a result of adding STP-FOGW to reactor feed. Both VS reduction values and biogas methane content were maintained and inhibition produced by long chain fatty acid (LCFA) accumulation was not observed. Recovery of a currently wasted methane potential from STP-FOGW was achieved in a co-digestion process with SC-OFMSW.

  17. The Anaerobic Fluidized Bed Membrane Bioreactor for Energy-Efficient...

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

    The Anaerobic Fluidized Bed Membrane Bioreactor for Energy-Efficient Wastewater Reuse The Anaerobic Fluidized Bed Membrane Bioreactor for Energy-Efficient Wastewater Reuse...

  18. anaerobic chloroethene-dehalogenating activity: Topics by E-print...

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

    Ecology Websites Summary: ANAEROBIC METABOLISM DURING ACTIVITY IN AMPHIBIANS ALBERT F. BENNETT and PAUL LICHT Department of Zoology production (anaerobic energetic generation)...

  19. anaerobic reactors treating: Topics by E-print Network

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

    of a destabilisation. Key words: Haldane model, Anaerobic Bernard, Olivier 20 HYDROGEN PRODUCTION BY ANAEROBIC MICROBIAL COMMUNITIES EXPOSED TO REPEATED HEAT TREATMENTS...

  20. anaerobic reactor treating: Topics by E-print Network

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

    of a destabilisation. Key words: Haldane model, Anaerobic Bernard, Olivier 20 HYDROGEN PRODUCTION BY ANAEROBIC MICROBIAL COMMUNITIES EXPOSED TO REPEATED HEAT TREATMENTS...

  1. ETHANOL PRODUCTION FROM DIFFERENT CARBON SOURCES USING ANAEROBICALLY DIGESTED AND WETOXIDISED MANURE AS NUTRIENT AND WATER SUPPLY

    E-Print Network [OSTI]

    gasses, great interest has arisen in production of biofuels. The idea of combining biogas and bioethanol digested manure could instead be a cheap medium for bioethanol fermentation in combination with suitable SSF. Keywords: bio-ethanol, wet oxidation, agricultural residues. 1 INTRODUCTION In recent years, due

  2. Feasibility Study of Anaerobic Digestion of Food Waste in St. Bernard, Louisiana. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    SciTech Connect (OSTI)

    Moriarty, K.

    2013-01-01T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA) developed the RE-Powering America's Land initiative to re-use contaminated sites for renewable energy generation when aligned with the community's vision for the site. The former Kaiser Aluminum Landfill in St. Bernard Parish, Louisiana, was selected for a feasibility study under the program. Preliminary work focused on selecting a biomass feedstock. Discussions with area experts, universities, and the project team identified food wastes as the feedstock and anaerobic digestion (AD) as the technology.

  3. acidogenic anaerobic reactor: Topics by E-print Network

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

    a pilot-scale setup was designed and constructed at a wastewater treatment plant in Giza, Egypt. It consists of an up-flow anaerobic reactor; down-flow anaerobic...

  4. anaerobic gac reactor: Topics by E-print Network

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

    a pilot-scale setup was designed and constructed at a wastewater treatment plant in Giza, Egypt. It consists of an up-flow anaerobic reactor; down-flow anaerobic...

  5. anaerobic biofilm reactors: Topics by E-print Network

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

    a pilot-scale setup was designed and constructed at a wastewater treatment plant in Giza, Egypt. It consists of an up-flow anaerobic reactor; down-flow anaerobic...

  6. anaerobic contact reactor: Topics by E-print Network

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

    a pilot-scale setup was designed and constructed at a wastewater treatment plant in Giza, Egypt. It consists of an up-flow anaerobic reactor; down-flow anaerobic...

  7. anaerobic bacterial aggregates: Topics by E-print Network

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

    systems Setia, Sanjeev 73 Biogeochemistry of Isoprenoid Production and Anaerobic Hydrocarbon Biodgeradation. Open Access Theses and Dissertations Summary: ??This dissertation...

  8. Biochemistry and physiology of anaerobic bacteria

    SciTech Connect (OSTI)

    NONE

    2000-05-18T23:59:59.000Z

    We welcome you to The Power of Anaerobes. This conference serves two purposes. One is to celebrate the life of Harry D. Peck, Jr.,who was born May 18, 1927 and would have celebrated his 73rd birthday at this conference. He died November 20, 1998. The second is to gather investigators to exchange views within the realm of anaerobic microbiology, an area in which tremendous progress has been seen during recent years. It is sufficient to mention discoveries of a new form of life (the archaea), hyper or extreme thermophiles, thermophilic alkaliphiles and anaerobic fungi. With these discoveries has come a new realization about physiological and metabolic properties of microorganisms, and this in turn has demonstrated their importance for the development, maintenance and sustenance of life on Earth.

  9. Anaerobic Digestion | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place:Alvan BlanchAmiteIn TheContinental

  10. Anaerobic Digestion | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon Capture and Sequestration Technology

  11. Quantitative Analyses of Anaerobic Wastewater Treatment Processes

    E-Print Network [OSTI]

    Timmer, Jens

    -knit community of bacteria cooperate to form a stable, self- regulating fermentation that transforms organic-chain fatty acids); fermentation of aminoacids and sugars; anaero- bic oxidation of long-chain fatty acids and alcohols; anaerobic oxidation of intermediary products such as volatile fatty acids; conversion of acetate

  12. Field metabolomics and laboratory assessments of anaerobic intrinsic bioremediation of hydrocarbons

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    Field metabolomics and laboratory assessments of anaerobic intrinsic bioremediation of hydrocarbons the in situ anaerobic attenuation of hydrocarbons in a contaminated aquifer underly- ing a former refinery. Metabolite profiles associated with anaerobic hydrocarbon decay revealed the microbial utilization

  13. Directed Evolution of a Cellodextrin Transporter for Improved Biofuel Production Under Anaerobic

    E-Print Network [OSTI]

    Zhao, Huimin

    Directed Evolution of a Cellodextrin Transporter for Improved Biofuel Production Under Anaerobic that anaerobic biofuel production could be significantly improved via directed evolution of a sugar transporter: cellodextrin transporter; cellobiose utilization; cellulosic biofuel; anaerobic fermentation; directed

  14. anaerobic conditions: Topics by E-print Network

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

    demonstrated Angenent, Lars T. 25 Evaluation of Anaerobic-Aerobic Wastewater Treatment Plant Operations CiteSeer Summary: Seven small wastewater treatment plants were chosen for...

  15. anaerobic process effects: Topics by E-print Network

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

    a one of the essential parameter as it has significant adverse impacts on the environment. Anaerobic ammonia oxidation (ANAMMOX) is a novel process in which nitrite is used...

  16. anaerobic processes occurring: Topics by E-print Network

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

    a one of the essential parameter as it has significant adverse impacts on the environment. Anaerobic ammonia oxidation (ANAMMOX) is a novel process in which nitrite is used...

  17. anaerobic continuously stirred: Topics by E-print Network

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

    a one of the essential parameter as it has significant adverse impacts on the environment. Anaerobic ammonia oxidation (ANAMMOX) is a novel process in which nitrite is used...

  18. anaerobic aquifer polluted: Topics by E-print Network

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

    a one of the essential parameter as it has significant adverse impacts on the environment. Anaerobic ammonia oxidation (ANAMMOX) is a novel process in which nitrite is used...

  19. Optimization of running strategies based on anaerobic energy and ...

    E-Print Network [OSTI]

    Amandine Aftalion

    2013-08-13T23:59:59.000Z

    Aug 13, 2013 ... We extend this analysis, based on the equation of motion and aerobic energy, to include a balance of anaerobic energy (or accumulated ...

  20. anaerobic contact filter: Topics by E-print Network

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

    Summary: gaining accep- tance as a green alternative to conventional methods such incineration, adsorption onto trichloroethene (TCE) vapors anaerobically is presented and...

  1. anaerobic mixed microbial: Topics by E-print Network

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

    a one of the essential parameter as it has significant adverse impacts on the environment. Anaerobic ammonia oxidation (ANAMMOX) is a novel process in which nitrite is used...

  2. A dynamic estimation scheme of specific growth rates of bacteria for an anaerobic wastewater treatment process

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ­ the dilution rate and the flow rates of methane and carbon dioxide in the biogas. I. Introduction Before it may. The dynamics of this process are the ones of standard anaerobic digestion, and depend on the type of organic quantities such as the dilution rate and the flow rates of methane and carbon dioxide in the biogas. In [1, 2

  3. Methane Digester Loan Program

    Broader source: Energy.gov [DOE]

    Established in 1998, the Minnesota Dept. of Agriculture Methane Digester Loan Program helps livestock producers install on-farm anaerobic digesters used for the production of electricity by...

  4. Doctoral Defense "Low-Temperature Anaerobic Membrane Bioreactor for

    E-Print Network [OSTI]

    Kamat, Vineet R.

    Doctoral Defense "Low-Temperature Anaerobic Membrane Bioreactor for Energy Recovery from Domestic such as anaerobic membrane bioreactors (AnMBRs) are emerging as one option to recover energy during domestic highlighting microbial community shifts in the bioreactor and biofilm during changes in membrane fouling

  5. Anaerobic microbial dissolution of lead and production of organic acids

    DOE Patents [OSTI]

    Francis, A.J.; Dodge, C.; Chendrayan, K.

    1986-02-28T23:59:59.000Z

    The present invention relates to a method of solubilizing lead, in the form of lead oxide, found in industrial wastes, before these wastes are dumped into the environment. The lead is solubilized by dissolving the lead oxide in the wastes through contact with an anaerobic bacterial culture containing the bacterium ATCC No. 53464. The solubilized lead can then be removed from the wastes by chemical separation. It could also be removed by extending the contact period with the bacterial culture. As the culture grows, the solubilized lead is removed from the wastes by bioaccumulation by the microorganism or by immobilization by a polymer-like material produced by the microorganism. At this point, the lead is then removed from the wastes when the waste material is separated from the bacterial culture. If desired, the bacterial culture could be digested at this point to yield relatively pure lead for further industrial use.

  6. anaerobic sulfide oxidation: Topics by E-print Network

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

    of an energy balance around a hypothetical cane energy estate producing only ethanol and power. Zizhou N; Purchase Bs 243 Anaerobic uptake and utilization of free glycine-2-C?...

  7. Anaerobic Methane Oxidation in a Landfill-Leachate Plume

    E-Print Network [OSTI]

    Grossman, E. L.; Cifuentes, L. A.; Cozzarelli, I. M.

    2002-01-01T23:59:59.000Z

    , and (2) negligible oxygen, nitrate, and sulfate concentrations. Methane concentrations and stable carbon isotope (?13C) values suggest anaerobic methane oxidation was occurring within the plume and at its margins. Methane ?13C values increased from about...

  8. anaerobic energy metabolism: Topics by E-print Network

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

    final steps of energy metabolism in a number of anaerobic eukaryotes. They produce hydrogen and ATP. Here we will review the data, which are relevant for the questions: how did...

  9. anaerobe acetobacterium dehalogenans: Topics by E-print Network

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

    final steps of energy metabolism in a number of anaerobic eukaryotes. They produce hydrogen and ATP. Here we will review the data, which are relevant for the questions: how did...

  10. anaerobic betaproteobacterium georgfuchsia: Topics by E-print...

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

    final steps of energy metabolism in a number of anaerobic eukaryotes. They produce hydrogen and ATP. Here we will review the data, which are relevant for the questions: how did...

  11. anaerobic digestor methanothrix: Topics by E-print Network

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

    final steps of energy metabolism in a number of anaerobic eukaryotes. They produce hydrogen and ATP. Here we will review the data, which are relevant for the questions: how did...

  12. Modeling for Anaerobic Fixed-Bed Biofilm Reactors

    SciTech Connect (OSTI)

    Liu, B. Y. M.; Pfeffer, J. T.

    1989-06-01T23:59:59.000Z

    The specific objectives of this research were: 1. to develop an equilibrium model for chemical aspects of anaerobic reactors; 2. to modify the equilibrium model for non-equilibrium conditions; 3. to incorporate the existing biofilm models into the models above to study the biological and chemical behavior of the fixed-film anaerobic reactors; 4. to experimentally verify the validity of these models; 5. to investigate the biomass-holding ability of difference packing materials for establishing reactor design criteria.

  13. Resource recovery and epidemiology of anaerobic wastewater treatment process in a controlled ecological life support system. Final report

    SciTech Connect (OSTI)

    Li, K.; Hunt, M.D.

    1995-02-01T23:59:59.000Z

    The results of work accomplished under two different areas: (1) Resource Recovery of an Anaerobic Wastewater Treatment process, and (2) Epidemiological Study of an Anaerobic Wastewater Treatment Process are documented. The first part of the work was to set up and test three anaerobic digesters and then run these three digesters with a NASA-simulated wastewater. The second part of the work was to use a multi-drug resistant strain of Salmonella choleraesuis as the indicator bacteria for the epidemiological study. Details of these two parts can be found in two master`s theses and are described in Sections 3 and 4 of this report. Several important results condensed from these two parts are summarized in Section 2.

  14. Single-phase and two-phase anaerobic digestion of fruit and vegetable waste: Comparison of start-up, reactor stability and process performance

    SciTech Connect (OSTI)

    Ganesh, Rangaraj [INRA, UR50, Laboratoire de Biotechnologie de l’Environnement, Avenue des Etangs, Narbonne F-11100 (France); Torrijos, Michel, E-mail: michel.torrijos@supagro.inra.fr [INRA, UR50, Laboratoire de Biotechnologie de l’Environnement, Avenue des Etangs, Narbonne F-11100 (France); Sousbie, Philippe [INRA, UR50, Laboratoire de Biotechnologie de l’Environnement, Avenue des Etangs, Narbonne F-11100 (France); Lugardon, Aurelien [Naskeo Environnment, 52 rue Paul Vaillant Couturier, F-92240 Malakoff (France); Steyer, Jean Philippe; Delgenes, Jean Philippe [INRA, UR50, Laboratoire de Biotechnologie de l’Environnement, Avenue des Etangs, Narbonne F-11100 (France)

    2014-05-01T23:59:59.000Z

    Highlights: • Single-phase and two-phase systems were compared for fruit and vegetable waste digestion. • Single-phase digestion produced a methane yield of 0.45 m{sup 3} CH{sub 4}/kg VS and 83% VS removal. • Substrate solubilization was high in acidification conditions at 7.0 kg VS/m{sup 3} d and pH 5.5–6.2. • Energy yield was lower by 33% for two-phase system compared to the single-phase system. • Simple and straight-forward operation favored single phase process over two-phase process. - Abstract: Single-phase and two-phase digestion of fruit and vegetable waste were studied to compare reactor start-up, reactor stability and performance (methane yield, volatile solids reduction and energy yield). The single-phase reactor (SPR) was a conventional reactor operated at a low loading rate (maximum of 3.5 kg VS/m{sup 3} d), while the two-phase system consisted of an acidification reactor (TPAR) and a methanogenic reactor (TPMR). The TPAR was inoculated with methanogenic sludge similar to the SPR, but was operated with step-wise increase in the loading rate and with total recirculation of reactor solids to convert it into acidification sludge. Before each feeding, part of the sludge from TPAR was centrifuged, the centrifuge liquid (solubilized products) was fed to the TPMR and centrifuged solids were recycled back to the reactor. Single-phase digestion produced a methane yield of 0.45 m{sup 3} CH{sub 4}/kg VS fed and VS removal of 83%. The TPAR shifted to acidification mode at an OLR of 10.0 kg VS/m{sup 3} d and then achieved stable performance at 7.0 kg VS/m{sup 3} d and pH 5.5–6.2, with very high substrate solubilization rate and a methane yield of 0.30 m{sup 3} CH{sub 4}/kg COD fed. The two-phase process was capable of high VS reduction, but material and energy balance showed that the single-phase process was superior in terms of volumetric methane production and energy yield by 33%. The lower energy yield of the two-phase system was due to the loss of energy during hydrolysis in the TPAR and the deficit in methane production in the TPMR attributed to COD loss due to biomass synthesis and adsorption of hard COD onto the flocs. These results including the complicated operational procedure of the two-phase process and the economic factors suggested that the single-phase process could be the preferred system for FVW.

  15. Stimulating the anaerobic degradation of aromatic hydrocarbons in contaminated sediments by providing

    E-Print Network [OSTI]

    Lovley, Derek

    Stimulating the anaerobic degradation of aromatic hydrocarbons in contaminated sediments to simulate the degradation of aromatic hydrocarbons in anaerobic contaminated sediments was investigated as the sole electron acceptor. Providing graphite electrodes as an electron acceptor in hydrocarbon

  16. Anaerobic Biotransformation and Mobility of Pu and PuEDTA

    SciTech Connect (OSTI)

    Xun, Luying

    2005-06-01T23:59:59.000Z

    Although our goal is to isolate anaerobic EDTA degraders, we initiated the experiments to include nitrilotriacetate (NTA), which is a structure homologue of EDTA. All the aerobic EDTA degraders can degrade NTA, but the isolated NTA degraders cannot degrade EDTA. Since NTA is a simpler structure homologue, it is likely that EDTA-degrading ability is evolved from NTA degradation. This hypothesis is further supported from our characterization of EDTA and NTA-degrading enzymes and genes (J. Bact. 179:1112-1116; and Appl. Environ. Microbiol. 67:688-695). The EDTA monooxygenase and NTA monooxygenase are highly homologous. EDTA monooxygenase can use both EDTA and NTA as substrates, but NTA monooxygenase can only use NTA as a substrate. Thus, we put our effort to isolate both NTA and EDTA degraders. In case, an anaerobic EDTA degrader is not immediately enriched, we will try to evolve the NTA degraders to use EDTA. Both aerobic and anaerobic enrichment cultures were set.

  17. Anaerobic Migrating Blanket Reactor Treatment of Low-Strength Wastewater at

    E-Print Network [OSTI]

    Angenent, Lars T.

    Anaerobic Migrating Blanket Reactor Treatment of Low-Strength Wastewater at Low Temperatures Largus anaerobic migrating blanket reactor (AMBR) was studied for the treatment of low- strength soluble wastewater). KEYWORDS: anaerobic treatment, low-strength wastewater, low-tem- perature conditions, compartmentalized

  18. Engineered microorganisms capable of producing target compounds under anaerobic conditions

    DOE Patents [OSTI]

    Buelter, Thomas (Denver, CO); Meinhold, Peter (Denver, CO); Feldman, Reid M. Renny (San Francisco, CA); Hawkins, Andrew C. (Parker, CO); Urano, Jun (Irvine, CA); Bastian, Sabine (Pasadena, CA); Arnold, Frances (La Canada, CA)

    2012-01-17T23:59:59.000Z

    The present invention is generally provides recombinant microorganisms comprising engineered metabolic pathways capable of producing C3-C5 alcohols under aerobic and anaerobic conditions. The invention further provides ketol-acid reductoisomerase enzymes which have been mutated or modified to increase their NADH-dependent activity or to switch the cofactor preference from NADPH to NADH and are expressed in the modified microorganisms. In addition, the invention provides isobutyraldehyde dehydrogenase enzymes expressed in modified microorganisms. Also provided are methods of producing beneficial metabolites under aerobic and anaerobic conditions by contacting a suitable substrate with the modified microorganisms of the present invention.

  19. Engineered ketol-acid reductoisomerase and alcohol dehydrogenase enable anaerobic 2-methylpropan-1-ol production at theoretical yield in

    E-Print Network [OSTI]

    Snow, Christopher

    be as efficient as bioethanol production, which reaches commercial viability through anaerobic, high

  20. Anaerobic Digestion (AD): not only methane

    Broader source: Energy.gov [DOE]

    Breakout Session 1: New Developments and Hot Topics Session 1-C: Beyond Biofuels Larry Baresi, Professor of Biology, California State University, Northridge

  1. Enhanced Anaerobic Digestion and Hydrocarbon Precursor Production |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisoryStandard |inHVACEnforcementEngaging Students in20HighDepartment of

  2. Anaerobic Biotransformation and Mobility of Pu and PuEDTA

    SciTech Connect (OSTI)

    Xun, Luying

    2005-06-01T23:59:59.000Z

    The objective of this report is to isolate anaerobic EDTA-degrading bacteria. Although our goal is to isolate anaerobic EDTA degraders, we initiated the experiments to include nitrilotriacetate (NTA), which is a structure homologue of EDTA. All the aerobic EDTA degraders can degrade NTA, but the isolated NTA degraders cannot degrade EDTA. Since NTA is a simpler structure homologue, it is likely that EDTA-degrading ability is evolved from NTA degradation. This hypothesis is further supported from our characterization of EDTA and NTA-degrading enzymes and genes (J. Bact. 179:1112-1116; and Appl. Environ. Microbiol. 67:688-695). The EDTA monooxygenase and NTA monooxygenase are highly homologous. EDTA monooxygenase can use both EDTA and NTA as substrates, but NTA monooxygenase can only use NTA as a substrate. Thus, we put our effort to isolate both NTA and EDTA degraders. In case, an anaerobic EDTA degrader is not immediately enriched, we will try to evolve the NTA degraders to use EDTA. Both aerobic and anaerobic enrichment cultures were set.

  3. anaerobic potency test: Topics by E-print Network

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

    anaerobic potency test First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A DOG TEST FOR MEASURING THE...

  4. Oxidation and methylation of dissolved elemental mercury by anaerobic bacteria

    SciTech Connect (OSTI)

    Hu, Haiyan [ORNL] [ORNL; Lin, Hui [ORNL] [ORNL; Zheng, Wang [ORNL] [ORNL; Tomanicek, Stephen J [ORNL] [ORNL; Johs, Alexander [ORNL] [ORNL; Feng, Xinbin [ORNL] [ORNL; Elias, Dwayne A [ORNL] [ORNL; Liang, Liyuan [ORNL] [ORNL; Liang, Liyuan [ORNL] [ORNL; Gu, Baohua [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Methylmercury is a neurotoxin that poses significant health risks to humans. Some anaerobic sulphate- and iron-reducing bacteria can methylate oxidized forms of mercury, generating methylmercury1-4. One strain of sulphate-reducing bacteria (Desulfovibrio desulfuricans ND132) can also methylate elemental mercury5. The prevalence of this trait among different bacterial strains and species remains unclear, however. Here, we compare the ability of two strains of the sulphate-reducing bacterium Desulfovibrio and one strain of the iron-reducing bacterium Geobacter to oxidise and methylate elemental mercury in a series of laboratory incubations. Experiments were carried out under dark, anaerobic conditions, in the presence of environmentally-relevant concentrations of elemental mercury. We report differences in the ability of these organisms to oxidise and methylate elemental mercury. In line with recent findings5, we show that Desulfovibrio desulfuricans ND132 can both oxidise and methylate elemental mercury. However, the rate of methylation of elemental mercury is only about one third the rate of methylation of oxidized mercury. We also show that Desulfovibrio alaskensis G20 can oxidise, but not methylate, elemental mercury. Geobacter sulfurreducens PCA is able to oxidise and methylate elemental mercury in the presence of cysteine. We suggest that the activity of methylating and non-methylating bacteria may together enhance the formation of methylmercury in anaerobic environments.

  5. E-Print Network 3.0 - anaerobic benzoate degradation Sample Search...

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

    of Idaho Collection: Environmental Sciences and Ecology 9 Column Studies of Anaerobic Carbon Tetrachloride Biotransformation with Hanford Aquifer Material Summary: the...

  6. anaerobic filter ufaf-subsurface: Topics by E-print Network

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

    Summary: gaining accep- tance as a green alternative to conventional methods such incineration, adsorption onto trichloroethene (TCE) vapors anaerobically is presented and...

  7. anaerobic up-flow bioreactor: Topics by E-print Network

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

    penicillin Recombinant m.o., mammalian (or insect) cells Grossmann, Ignacio E. 10 HYDROGEN PRODUCTION BY ANAEROBIC MICROBIAL COMMUNITIES EXPOSED TO REPEATED HEAT TREATMENTS...

  8. anaerobic iron-reducing bacterium: Topics by E-print Network

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

    in oxygen deficient zones of the oceans: No evidence for the predominance of anaerobes Environmental Management and Restoration Websites Summary: is unknown. Since it is known...

  9. OPTIMIZATION OF RUNNING STRATEGIES BASED ON ANAEROBIC ENERGY AND VARIATIONS OF VELOCITY

    E-Print Network [OSTI]

    OPTIMIZATION OF RUNNING STRATEGIES BASED ON ANAEROBIC ENERGY AND VARIATIONS OF VELOCITY AMANDINE extend this analysis, based on the equation of motion and aerobic energy, to include a balance of anaerobic energy (or accumulated oxygen deficit) and an energy recreation term when the speed decreases. We

  10. Anaerobic Benzene Oxidation in the Fe(III) Reduction Zone of

    E-Print Network [OSTI]

    Lovley, Derek

    Anaerobic Benzene Oxidation in the Fe(III) Reduction Zone of Petroleum-Contaminated Aquifers R O B North, University of Massachusetts, Amherst, Massachusetts 01003 The potential for anaerobic benzene. [14C]Benzene was not oxidized to 14CO2 at most sites examined, which is consistent with previous

  11. Supplementary Information Pre-enrichment procedure for enhanced start-up of anaerobic facultatively

    E-Print Network [OSTI]

    1 Supplementary Information Pre-enrichment procedure for enhanced start-up of anaerobic-814-963-7908, Fax 1-814-863-7304, E-mail blogan@psu.edu #12;2 Fig. S1 Steps for (a) general pre-enrichment procedure for development of anaerobic biocathodes and (b) pre-enrichment for development of facultatively autotrophic

  12. Clostridiumm ljungdahlii, an anaerobic ethanol and acetate producing microorganism

    DOE Patents [OSTI]

    Gaddy, J.L.; Clausen, E.C.

    1992-12-22T23:59:59.000Z

    A newly discovered microorganism was isolated in a biologically pure culture and designated Clostridium ljungdahlii, having the identifying characteristics of ATCC No. 49587. Cultured in an aqueous nutrient medium under anaerobic conditions, this microorganism is capable of producing ethanol and acetate from CO and H[sub 2]O and/or CO[sub 2] and H[sub 2] in synthesis gas. Under optimal growth conditions, the microorganism produces acetate in preference to ethanol. Conversely, under non-growth conditions, ethanol production is favored over acetate. 3 figs.

  13. Clostridiumm ljungdahlii, an anaerobic ethanol and acetate producing microorganism

    DOE Patents [OSTI]

    Gaddy, James L. (Fayetteville, AR); Clausen, Edgar C. (Fayetteville, AR)

    1992-01-01T23:59:59.000Z

    A newly discovered microorganism was isolated in a biologically pure culture and designated Clostridium ljungdahlii, having the identifying characteristics of ATCC No. 49587. Cultured in an aqueous nutrient medium under anaerobic conditions, this microorganism is capable of producing ethanol and acetate from CO and H.sub.2 O and/or CO.sub.2 and H.sub.2 in synthesis gas. Under optimal growth conditions, the microorganism produces acetate in preference to ethanol. Conversely, under non-growth conditions, ethanol production is favored over acetate.

  14. Anaerobic microbial dissolution of lead and production of organic acids

    DOE Patents [OSTI]

    Francis, Arokiasamy J. (Middle Island, NY); Dodge, Cleveland (Wading River, NY); Chendrayan, Krishnachetty (Coimbatore Tamil Nadu, IN); Quinby, Helen L. (Cambridge, MD)

    1988-01-01T23:59:59.000Z

    The present invention relates to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rate of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 .mu.moles of lead as lead oxide was 0.042 .mu.moles ml.sup.-1 hr.sup.-1. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids.

  15. Anaerobic microbial dissolution of lead and production of organic acids

    DOE Patents [OSTI]

    Francis, A.J.; Dodge, C.; Chendrayan, K.; Quinby, H.L.

    1987-04-16T23:59:59.000Z

    The present invention related to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rat of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 ..mu..moles of lead as lead oxide was 0.042 ..mu..moles m1/sup /-/1/ hr/sup /-/1/. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of the strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids. 4 figs., 3 tabs.

  16. Removal of polycyclic aromatic hydrocarbons (PAHs) from sewage sludge by anaerobic degradation

    E-Print Network [OSTI]

    Removal of polycyclic aromatic hydrocarbons (PAHs) from sewage sludge by anaerobic degradation N nature of the polyaromatic hydrocarbons (PAHs) they are mostly bound to the sludge and escape aerobic

  17. Culturing Aerobic and Anaerobic Bacteria and Mammalian Cells with a Microfluidic Differential Oxygenator

    E-Print Network [OSTI]

    Lam, Raymond H. W.

    In this manuscript, we report on the culture of anaerobic and aerobic species within a disposable multilayer polydimethylsiloxane (PDMS) microfluidic device with an integrated differential oxygenator. A gas-filled microchannel ...

  18. Bioconversion of cyanide and acetonitrile by a municipal-sewage-derived anaerobic consortium

    SciTech Connect (OSTI)

    Nagle, N.J.; Rivard, C.J.; Mohagheghi, A.; Philippidis, G. [National Renewable Energy Lab., Golden, CO (United States)

    1995-12-31T23:59:59.000Z

    In this study, an anaerobic consortium was examined for its ability to adapt to and degrade the representative organonitriles, cyanide and acetonitrile. Adaptation to cyanide and acetonitrile was achieved by adding increasing levels of cyanide and acetonitrile to the anaerobic consortium, followed by extensive incubation over a 90-day period. The anaerobic consortium adapted most rapidly to the lower concentrations of each substrate and resulted in reductions of 85% and 83% of the cyanide and acetonitrile, respectively, at the 50 mg/L addition level. Increasing the concentration of both cyanide and acetonitrile resulted in reduced bioconversion. Two continuously stirred tank reactors (CSTR) were set up to examine the potential for continuous bioconversion of organonitriles. The anaerobic consortium was adapted to continuous infusion of acetonitrile at an initial concentration of 10 mg/L{center_dot}day in phosphate buffer.

  19. anaerobic feiii-reducer rhodoferax: Topics by E-print Network

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

    final steps of energy metabolism in a number of anaerobic eukaryotes. They produce hydrogen and ATP. Here we will review the data, which are relevant for the questions: how did...

  20. anaerobic uiv bio-oxidation: Topics by E-print Network

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

    final steps of energy metabolism in a number of anaerobic eukaryotes. They produce hydrogen and ATP. Here we will review the data, which are relevant for the questions: how did...

  1. The incidence and significance of anaerobic bacteria in the equine uterus 

    E-Print Network [OSTI]

    Bolinger, Dean Roger

    1987-01-01T23:59:59.000Z

    THE INCIDENCE AND SIGNIFICANCE OF ANAEROBIC BACTERIA IN THE EQUINE UTERUS A Thesis by DEAN ROGER BOLINGER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements of the degree of MASTER OF SCIENCF.... December I 987 Major Subject: Veterinary Medical Sciences THE INCIDENCE AND SIGNIFICANCE OF ANAEROBIC BACTERIA IN THE EQUINE UTERUS A Thesis by DEAN ROGER BOLINGER Approved as to style and content by: Ronnie G. Elmore (Chairman of Committee...

  2. Anaerobic Redox Cycling of Iron by Freshwater Sediment Microorganisms

    SciTech Connect (OSTI)

    Weber, Karrie A.; Urrutia, Matilde M.; Churchill, Perry F.; Kukkadapu, Ravi K.; Roden, Eric E.

    2006-01-01T23:59:59.000Z

    The potential for microbially-mediated anaerobic redox cycling of iron (Fe) was examined in a first-generation enrichment culture of freshwater wetland sediment microorganisms. MPN enumerations revealed the presence of significant populations of Fe(III)-reducing (ca. 108 cells mL-1) and Fe(II)-oxidizing, nitrate-reducing organisms (ca. 105 cells mL-1) in the sediment used to inoculate the enrichment cultures. Nitrate reduction commenced immediately following inoculation of acetate-containing (ca. 1 mM) medium with a small quantity (1% vol/vol) of wetland sediment, and resulted in the transient accumulation of NO2- and production of a mixture of end-products including NH4+. Fe(III) oxide (high surface area goethite) reduction took place - after NO3- was depleted and continued until all the acetate was utilized. Addition of NO3 after Fe(III) reduction ceased resulted in the immediate oxidation of Fe(II) coupled to reduction of + NO3-to NH4 . No significant NO2- accumulation was observed during nitrate-dependent Fe(II) oxidation. No Fe(II) oxidation occurred in pasteurized controls. Microbial community structure in the enrichment was monitored by DGGE analysis of PCR amplified 16s rDNA and RT-PCR amplified 16S rRNA, as well as by construction of 16S rDNA clone libraries for four different time points during the experiment. Strong similarities in dominant members of the microbial community were observed in the Fe(III) reduction and nitrate-dependent Fe(II) oxidation phases of the experiment, specifically the common presence of organisms closely related (= 95% sequence similarity) to the genera Geobacter and Dechloromonas. These results indicate that the wetland sediments contained organisms such as Geobacter sp. which are capable of both + dissimilatory Fe(III) reduction and oxidation of Fe(II) with reduction of NO3-reduction to NH4 . Our findings suggest that microbially-catalyzed nitrate-dependent Fe(II) oxidation has the potential to contribute to a dynamic anaerobic Fe redox cycle in freshwater sediments.

  3. Effects of TNT and its metabolites on anaerobic TNT degradation

    SciTech Connect (OSTI)

    Roberts, D.J. [Univ. of Houston, TX (United States). Dept. of Civil and Environmental Engineering; Pendharkar, S. [Computron, Phoenix, AZ (United States); Ahmad, F. [Booz, Allen and Hamilton, San Antonio, TX (United States)

    1998-07-01T23:59:59.000Z

    The effects of the presence of 2,4,6-trinitrotoluene (TNT), 4-amino-2,6-dinitrotoluene, and 2,4-diamino-6-nitrotoluene on the anaerobic treatment procedure developed for munitions-contaminated soil were examined. When 4-amino-2,6-dinitrotoluene was spiked in increasing levels into cultures containing TNT, inhibition of the rate of TNT degradation was observed. The degradation of 4-amino-2,6-dinitrotoluene did not proceed while TNT was present in the cultures. When 2,4-diamino-6-nitrotoluene was spiked into cultures that also contained TNT, TNT degradation rates were inhibited, and 4-amino-2,6-dinitrotoluene and 2,4-diamino-6-nitrotoluene were not degraded at all. When 2,4-diamino-6-nitrotoluene was spiked into cultures containing 4-amino-2,6-dinitrotoluene, degradation of 4-amino-2,6-dinitrotoluene was not effected but 2,4-diamino-6-nitrotoluene was not degraded. These results suggest that the rapid removal of TNT from the treatment system, before the intermediates have a chance to accumulate, or the rapid removal of the intermediates of TNT degradation is of utmost importance during the remediation of TNT-contaminated soils. If these intermediates are allowed to accumulate above inhibitory levels, the degradation of TNT will be slowed and the removal of the intermediates will halt completely.

  4. Degradative capacities and bioaugmentation potential of an anaerobic benzene-degrading bacterium strain DN11

    SciTech Connect (OSTI)

    Yuki Kasai; Yumiko Kodama; Yoh Takahata; Toshihiro Hoaki; Kazuya Watanabe [Marine Biotechnology Institute, Kamaishi (Japan)

    2007-09-15T23:59:59.000Z

    Azoarcus sp. strain DN11 is a denitrifying bacterium capable of benzene degradation under anaerobic conditions. The present study evaluated strain DN11 for its application to bioaugmentation of benzene-contaminated underground aquifers. Strain DN11 could grow on benzene, toluene, m-xylene, and benzoate as the sole carbon and energy sources under nitrate-reducing conditions, although o- and p-xylenes were transformed in the presence of toluene. Phenol was not utilized under anaerobic conditions. Kinetic analysis of anaerobic benzene degradation estimated its apparent affinity and inhibition constants to be 0.82 and 11 {mu}M, respectively. Benzene-contaminated groundwater taken from a former coal-distillation plant site in Aichi, Japan was anaerobically incubated in laboratory bottles and supplemented with either inorganic nutrients (nitrogen, phosphorus, and nitrate) alone, or the nutrients plus strain DN11, showing that benzene was significantly degraded only when DN11 was introduced. Denaturing gradient gel electrophoresis of PCR-amplified 16S rRNA gene fragments, and quantitative PCR revealed that DN11 decreased after benzene was degraded. Following the decrease in DN11 16S rRNA gene fragments corresponding to bacteria related to Owenweeksia hongkongensis and Pelotomaculum isophthalicum, appeared as strong bands, suggesting possible metabolic interactions in anaerobic benzene degradation. Results suggest that DN11 is potentially useful for degrading benzene that contaminates underground aquifers at relatively low concentrations. 50 refs., 6 figs., 1 tab.

  5. Pilot-scale experiment on anaerobic bioreactor landfills in China

    SciTech Connect (OSTI)

    Jiang, Jianguo [Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China (China)], E-mail: jianguoj@tsinghua.edu.cn; Yang, Guodong; Deng, Zhou; Huang, Yunfeng [Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China (China); Huang, Zhonglin; Feng, Xiangming; Zhou, Shengyong; Zhang, Chaoping [Xiaping Solid Waste Landfill, Shenzhen 518019, PR China (China)

    2007-07-01T23:59:59.000Z

    Developing countries have begun to investigate bioreactor landfills for municipal solid waste management. This paper describes the impacts of leachate recirculation and recirculation loadings on waste stabilization, landfill gas (LFG) generation and leachate characteristics. Four simulated anaerobic columns, R1-R4, were each filled with about 30 tons of waste and recirculated weekly with 1.6, 0.8 and 0.2 m{sup 3} leachate and 0.1 m{sup 3} tap water. The results indicated that the chemical oxygen demand (COD) half-time of leachate from R1 was about 180 days, which was 8-14 weeks shorter than that of R2-R4. A large amount of LFG was first produced in R1, and its generation rate was positively correlated to the COD or volatile fatty acid concentrations of influent leachates after the 30th week. By the 50th week of recirculation, the waste in R1 was more stabilized, with 931.2 kg COD or 175.6 kg total organic carbon released and with the highest landfill gas production. However, this contributed mainly to washout by leachate, which also resulted in the reduction of LFG generation potential and accumulation of ammonia and/or phosphorus in the early stage. Therefore, the regimes of leachate recirculation should be adjusted to the phases of waste stabilization to enhance efficiency of energy recovery. Integrated with the strategy of in situ leachate management, extra pre-treatment or post-treatment methods to remove the nutrients are recommended.

  6. Removal of polychlorinated phenols in sequential anaerobic-aerobic biofilm reactors packed with tire chips

    SciTech Connect (OSTI)

    Shin, H.S.; Yoo, K.S.; Park, J.K.

    1999-05-01T23:59:59.000Z

    Scrap vehicle tire chips were used as packing material for sequential anaerobic-aerobic biofilm reactors to remove persistent chlorinated hydrocarbons. Adsorption capacity of scrap tires was greater under acidic conditions than under basic conditions. However, it was only approximately 0.04 to 0.3% of that of activated carbon. The amount of biomass that attached to the surface of scrap tires was 3.16 and 3.72 mg volatile suspended solids/cm{sup 2} after 14 and 37 days, respectively. Two laboratory-scale, down-flow anaerobic-aerobic biofilm reactors packed with tire chips were operated to remove 2,4-dichlorophenol (DCP) and 4-chlorophenol (CP). More than 98% of DCP was dehalogenated to CP in the anaerobic reactor, 70 to 98% of which was subsequently degraded in the aerobic reactor. Scrap tires did not cause any operational problems when used as biofilter media.

  7. A Two-Stage Microbial Fuel Cell and Anaerobic Fluidized Bed Membrane Bioreactor (MFC-AFMBR) System for Effective Domestic

    E-Print Network [OSTI]

    A Two-Stage Microbial Fuel Cell and Anaerobic Fluidized Bed Membrane Bioreactor (MFC-AFMBR) System treatment process, consisting of microbial fuel cells and an anaerobic fluidized bed membrane bioreactor that is currently required for typical activated sludge or aerobic membrane bioreactor processes. In addition, MFCs

  8. Investigation of anaerobic bacteria associated with mortality in grey mullet (Mugil cephalus) and redfish (Sciaenops ocellatus) 

    E-Print Network [OSTI]

    Henley, Michael Waite

    1976-01-01T23:59:59.000Z

    INVEST1GATION OF ANAEROBIC BACTERIA ASSOCIATED WITH NDRTALITY IN GREY MULLET t~N' I ~*h I ) AND REDYIRH (~H' o ll t A Thesis MICHAEL WAITE HENLEY f Submitted to the Graduate College of Texas ARM University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1976 Major Subject: Veterinary Microbiology INVESTIGATION OF ANAEROBIC BACTERIA ASSOCIATED NITH liIIH NDR IlDIIY IN GREY NUDE EI 1M~I ~ll END REDPI H l~R' ll t 1 A Thesis !G!ICHAEL WAITE HENLEY...

  9. Anaerobic fermentation of agricultural residue: potential for improvement and implementation. Final report, Volume II

    SciTech Connect (OSTI)

    Jewell, W. J.; Dell'orto, S.; Fanfoni, K. J.; Hayes, T. D.; Leuschner, A. P.; Sherman, D. F.

    1980-04-01T23:59:59.000Z

    Earlier studies have shown that although large quantities of agricultural residues are generated on small farms, it was difficult to economically justify use of conventional anaerobic digestion technology, such as used for sewage sludge digestion. A simple, unmixed, earthen-supported structure appeared to be capable of producing significant quantities of biogas at a cost that would make it competitive with many existing fuels. The goal of this study was to define and demonstrate a methane fermentation technology that could be practical and economically feasible on small farms. This study provides the first long term, large scale (reactor volumes of 34 m/sup 3/) parallel testing of the major theory, design, construction, and operation of a low cost approach to animal manure fermentation as compared to the more costly and complex designs. The main objectives were to define the lower limits for successful fermentor operation in terms of mixing, insulation, temperature, feed rate, and management requirements in a cold climate with both pilot scale and full scale fermentors. Over a period of four years, innovative fermentation processes for animal manures were developed from theoretical concept to successful full scale demonstration. Reactors were sized for 50 to 65 dairy animals, or for the one-family dairy size. The results show that a small farm biogas generation system that should be widely applicable and economically feasible was operated successfully for nearly two years. Although this low cost system out-performed the completely mixed unit throughout the study, perhaps the greatest advantage of this approach is its ease of modification, operation, and maintenance.

  10. ANAEROBIC RESISTANCE TO HIGH LEVELS OF CADMIUM AND OTHER TOXIC METALS IN A FACULTATIVE ANAEROBE ISOLATED FROM PRISTINE SALT MARSH SEDIMENTS

    SciTech Connect (OSTI)

    SHARMA,P.K.; VAIRAVAMURTHY,A.; KIELECZAWA,J.

    1999-06-20T23:59:59.000Z

    The authors have isolated many Cd (II) resistant bacterial strains from relatively pristine sediments collected from salt marshes in Shelter Island, New York. Detailed studies are being performed on one isolate, strain Cd-1. Strain Cd-1 is metabolically diverse, halotolerant, Gram-negative, facultative anaerobe. It can resist high amounts of Cd (II), Cr (VI), As (V), Se (IV), Co (II), Pb (II), or Zn (II) under defined anaerobic conditions. With pyruvate as the energy source, Cd-1 can grow well at examined Cd (II) concentrations ranging up to 15 mM. It can resist Cd (II) with or without marine level NaCl concentration, under acidic or neutral conditions. It can resist Cd (II) under aerobic conditions as well. These features are novel for a heavy metal resistant bacterium.

  11. Prolixibacter bellariivorans gen. nov., sp. nov., a sugar-fermenting, psychrotolerant anaerobe of

    E-Print Network [OSTI]

    Lovley, Derek

    ferment sugars by using a mixed acid fermentation pathway and it can grow over a wide range with oxygen. Several organisms that are able to oxidize organic acids, such as acetate, to CO2 and utilizeProlixibacter bellariivorans gen. nov., sp. nov., a sugar-fermenting, psychrotolerant anaerobe

  12. Column Studies of Anaerobic Carbon Tetrachloride Biotransformation with Hanford Aquifer Material

    E-Print Network [OSTI]

    Semprini, Lewis

    Column Studies of Anaerobic Carbon Tetrachloride Biotransformation with Hanford Aquifer Material bioremediation of carbon tetrachloride (CT) at the Hanford site in south- central Washington state. Benzoate in south- central Washington state has been a defense materials pro- duction complex since 1943. Carbon

  13. Natural attenuation of PAHs under anaerobic conditions C.Rollin (V, T. Heidi2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of the PAH concentrations between the soil and the water phase. The decrease of the PAH concentrations water-bound PAH took place. In a first, orientating microcosm experiment, the hypothesis that PAHNatural attenuation of PAHs under anaerobic conditions C.Rollin (V, T. Heidi2 ), J. Laversanne (V

  14. Calculated Proton Uptake on Anaerobic Reduction of Cytochrome c Oxidase: Is the Reaction Electroneutral?

    E-Print Network [OSTI]

    Gunner, Marilyn

    Calculated Proton Uptake on Anaerobic Reduction of Cytochrome c Oxidase: Is the ReactionVised Manuscript ReceiVed April 17, 2006 ABSTRACT: Cytochrome c oxidase is a transmembrane proton pump that builds ranging from fully oxidized to fully reduced. One long-standing problem is how proton uptake is coupled

  15. anaerobic swine waste: Topics by E-print Network

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

    catalyzed by a consortium of different bacteria 10. Co-digestion of several wastes (manure, sewage sludge Boyer, Edmond 24 Pathogenesis of Haemophilus parasuis infection in...

  16. anaerobic waste water: Topics by E-print Network

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

    catalyzed by a consortium of different bacteria 10. Co-digestion of several wastes (manure, sewage sludge Boyer, Edmond 56 Economic Analysis and Comparison of Waste Water...

  17. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    1976. Engineering Aspects of Microalgae. Univer- sity ofreports as an average for microalgae. It is helpful to knowsalinity gradients. use of microalgae growth equations have

  18. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Municipal Solid Waste-Sewage Sludge. b 4.15 SCF CH 4 / cu ftUP I j methane 31.5 scf sludge 18.61b water 161b Btu/scfsewer 65.3 lb ( 7.9 gal) sludge ash 1.74 lb stack emissions

  19. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    University, School of Engineering, Ocean .. Engineel'ing-and nutrition, ocean engineering and methane generation. In

  20. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Thermal Energy Conversion (OTEC). by Division of Technologyocean thermal energy conversion (OTEC) operations (Debok and

  1. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Design Parameters Marine Biomass Production Sea Farmof Various Types of Biomass . Biomethanation Parameters.Proceedings, Fuels from Biomass Symposium. University of

  2. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    of (Wilcox, H.A. , ed) Ocean Food and Energy Farm Project by6 of (Wilcox, H.A. , ed) Ocean Food and Energy Farm Project.S. et al. 1976. "Ocean Food and Energy Farm Project" Subtask

  3. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    C0 2 Water/ Nutrients Production System Harvesting Systemwater and grinding) could be accomplished on the harvestingdiesel-powered harvesting vessels. The waste water generated

  4. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    III t> IV Natural Kelp Bed System Introduction. . . . .Natural Kelp Bed System Constraints . . . . . . v CapitalIntroduction . . . . . . Natural Kelp Bed System Harvest

  5. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    that the use of sewage as a kelp nutrient source can, in theused to enrich the kelp with nutrient rich deep ocean water.Supplements Marine Kelp C0 2 Water/ Nutrients Production

  6. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    flow from an on-site steam turbine to raise the kelp to 45°Ca 1200 Kw electric steam turbine/generator system. CapitalFinally, the waste steam stream from the turbine is used to

  7. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Sludge Processing Gas Scrubber Intermediate BTU Gas (System) 3 TPD 55.779 TPD I Scrubber H2 0 = 48 T Waste SludgeSystem Solids 28.11T (To Scrubber) 48 TPD) Fluidized Bed

  8. Anaerobic Digester Gas-to-Electricity Rebate and Performance Incentive

    Broader source: Energy.gov [DOE]

    Note: This program is not currently accepting applications. Check back for updates regarding future solicitations.

  9. anaerobic digestion usa: Topics by E-print Network

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

    Mathematical Journal Volume 21(2011), Number 1, 27 Institute for Cyber Security San Antonio, Texas 78249, USA shylmath@hotmail.com Communicated by the Editors 70 FUTURE...

  10. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Document - Ocean Thermal Energy Conversion (OTEC). byassociated with ocean thermal energy conversion (OTEC)

  11. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Document - Ocean Thermal Energy Conversion (OTEC). bywith ocean thermal energy conversion (OTEC) operations (

  12. anaerobically digested cattle: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  13. anaerobic digesters treating: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  14. anaerobic digestion final: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  15. anaerobic digester gas: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  16. anaerobic digestion held: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  17. anaerobic digestion role: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  18. anaerobic digestion model: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  19. anaerobically digested municipal: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  20. anaerobic closed digester: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  1. anaerobic thermophilic digestion: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  2. anaerobic digestion program: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  3. anaerobic digester sludge: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  4. anaerobic digestion: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  5. anaerobic digestion processes: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  6. anaerobic sludge digestion: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  7. anaerobic digestion process: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  8. anaerobic digestion systems: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  9. anaerobic digester performance: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  10. anaerobic digestion system: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  11. anaerobic digestion performance: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  12. anaerobic digesters current: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  13. anaerobically digested sludge: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  14. anaerobic digester treating: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  15. anaerobic digestion analysis: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  16. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    Readiness Document - Ocean Thermal Energy Conversion (OTEC).associated with ocean thermal energy conversion (OTEC)

  17. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01T23:59:59.000Z

    lb process heat: 1. 23 X 10 4 BTU electricity 5500 BTUe CaC1scf sludge 18.61b water 161b Btu/scf WASTE PROCESSING sewer~l9ZZ X 10 DEELAIQB BTU/yr) I MATERIALS TRANSPORTATION 3.

  18. A Design-Builder's Perspective: Anaerobic Digestion, Forest County

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA Newsletters 2010 ARRA Newsletters201416-17,Proposed8.Reporting

  19. List of Anaerobic Digestion Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano,LakefrontLighthouse SolarI JumpList of

  20. Biomass Program Perspectives on Anaerobic Digestion and Fuel Cell

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'s ReplyApplicationCommittee |FY14June Biomass Program

  1. A Design-Builder's Perspective: Anaerobic Digestion, Forest County

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHEEnergyReliability2015Gross Gamma-Ray

  2. ANAEROBIC BIOLOGICAL TREATMENT OF IN-SITU RETORT WATER

    E-Print Network [OSTI]

    Ossio, Edmundo

    2012-01-01T23:59:59.000Z

    29,000 mg/1 nil a Source of sludge: City of Richmond WaterYen assessed the activated sludge process for the treatmentstudies using a digested sludge seed from a municipal

  3. anaerobic alkaline cofermentation: Topics by E-print Network

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

    waste, animal or human manure, and other organic waste), into energy (in the form of biogas or electricity). An added benefit to bio-digestion is a leftover ... Rea, Jonathan...

  4. anaerobic methanosarcina barkeri: Topics by E-print Network

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

    waste, animal or human manure, and other organic waste), into energy (in the form of biogas or electricity). An added benefit to bio-digestion is a leftover ... Rea, Jonathan...

  5. Parameter identification in dynamical models of anaerobic waste water treatment

    E-Print Network [OSTI]

    Timmer, Jens

    processes using two data sets obtained from different experimental setups. In both experiments only biogas Science Inc. All rights reserved. PII: S0025-5564(01)00098-0 #12;digestion were introduced involving many concentrations are measurable. Yet in many ex- perimental settings only biogas production rate data is available

  6. Physiologically anaerobic microorganisms of the deep subsurface. Final performance report, June 1, 1990--August 31, 1993

    SciTech Connect (OSTI)

    Stevens, S.E. Jr.; Chung, K.T.

    1993-10-01T23:59:59.000Z

    Anaerobic bacteria were isolated from deep subsurface sediment samples taken at study sites in Idaho (INEL) and Washington (HR) by culturing on dilute and concentrated medium. Morphologically distinct colonies were purified, and their responses to 21 selected physiological tests were determined. Although the number of isolates was small (18 INEL, 27 HR) some general patterns could be determined. Most strains could utilize all the carbon sources, however the glycerol and melizitose utilization was positive for 50% or less of the HR isolates. Catalase activity (27.78% at INEL, 74.07% at HR) and tryptophan metabolism (11.12% at INEL, 40.74% at HR) were significantly different between the two study sites. MPN and viable counts indicate that sediments near the water table yield the greatest numbers of anaerobes. Deeper sediments also appear to be more selective with the greatest number of viable counts on low-nutrient mediums. Likewise, only strictly obligate anaerobes were found in the deepest sediment samples. Selective media indicated the presence of methanogens, acetogens, and sulfate reducers at only the HR site.

  7. Impacts of Ethanol on Anaerobic Production of Tert-Butyl Alcohol (TBA) from Methyl Tert-Butyl Ether (MTBE) in Groundwater

    E-Print Network [OSTI]

    Scow, K M; MacKay, Douglas

    2008-01-01T23:59:59.000Z

    Project title: Impacts of Ethanol on Anaerobic Production oftert-butanol (TBA). As ethanol is being promoted as ainvestigate the effect of ethanol release on existing MTBE

  8. Investigation of possible alternate end products of anaerobic metabolism in the Gulf toadfish, Opsanus beta 

    E-Print Network [OSTI]

    Trant, John Miller

    1981-01-01T23:59:59.000Z

    accumulated due to anoxia in the fish was lactate. Succinate and alanine showed slight or no accumulation with t1me. Alanine actually showed reduced pool size due to anox1a and hypoxia as compared to 1n vitro aerobic tissue pool-size. Even though in vivo... anaerobic tissues showed only slightly elevated and time constant lactate concentrat1ons compared to 1n vitro aerob1c tissue, a C tracer ind1cated accumulation and an efflux 14 w1th1n the lactate pool. Total act1vity decreased with t1me. There- fore...

  9. Active transport, substrate specificity, and methylation of Hg(II) in anaerobic bacteria

    SciTech Connect (OSTI)

    Schasfer, Jeffra [Princeton University; Rocks, Sara [Princeton University; Zheng, Wang [ORNL; Liang, Liyuan [ORNL; Gu, Baohua [ORNL; Morel, Francois M [ORNL

    2011-01-01T23:59:59.000Z

    The formation of methylmercury (MeHg), which is biomagnified in aquatic food chains and poses a risk to human health, is effected by some iron- and sulfate-reducing bacteria (FeRB and SRB) in anaerobic environments. However, very little is known regarding the mechanism of uptake of inorganic Hg by these organisms, in part because of the inherent difficulty in measuring the intracellular Hg concentration. By using the FeRB Geobacter sulfurreducens and the SRB Desulfovibrio desulfuricans ND132 as model organisms, we demonstrate that Hg(II) uptake occurs by active transport. We also establish that Hg(II) uptake by G. sulfurreducens is highly dependent on the characteristics of the thiols that bind Hg(II) in the external medium, with some thiols promoting uptake and methylation and others inhibiting both. The Hg(II) uptake system of D. desulfuricans has a higher affinity than that of G. sulfurreducens and promotes Hg methylation in the presence of stronger complexing thiols. We observed a tight coupling between Hg methylation and MeHg export from the cell, suggesting that these two processes may serve to avoid the build up and toxicity of cellular Hg. Our results bring up the question of whether cellular Hg uptake is specific for Hg(II) or accidental, occurring via some essential metal importer. Our data also point at Hg(II) complexation by thiols as an important factor controlling Hg methylation in anaerobic environments.

  10. Mechanisms, Chemistry, and Kinetics of Anaerobic Biodegradation of cis-Dichloroethene and Vinyl Chloride

    SciTech Connect (OSTI)

    McCarty, P.L.; Spormann, A.M.

    2000-12-01T23:59:59.000Z

    Anaerobic biological processes can result in PCE and TCE destruction through conversion to cis-dichloroethene (cDCE) then to vinyl chloride (VC), and finally to ethene. Here, the chlorinated aliphatic hydrocarbons (CAHs) serve as electron acceptors in energy metabolism, requiring electron donors such as hydrogen from an external source. The purpose of this study was to learn more about the biochemistry of cDCE and VC conversion to ethene, to better understand the requirements for electron donors, and to determine factors affecting the rates of CAH degradation and organism growth. The biochemistry of reductive dehalogenation of VC was studied with an anaerobic mixed culture enriched on VC. In other studies on electron donor needs for dehalogenation of cDCE and VC, competition for hydrogen was found to occur between the dehalogenators and other microorganisms such as methanogens and homoacetogens in a benzoate-acclimated dehalogenating methanogenic mixed culture. Factors affecting the relative rates of destruction of the solvents and their intermediate products were evaluated. Studies using a mixed PCE-dehalogenating culture as well as the VC enrichment for biochemical studies suggested that the same species was involved in both cDCE and VC dechlorination, and that cDCE and VC competitively inhibited each other's dechlorination rate.

  11. Investigation of EPS Characteristics and their Effects on Waste Activated Sludge Digestion

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Investigation of EPS Characteristics and their Effects on Waste Activated Sludge Digestion Thomas be accomplished through use of aerobic or anaerobic self digestion, but choice of digestion type in practice on digestibility, especially in regards to the composition of extracellular polymeric substances (EPS). Samples

  12. A Novel Anaerobic Electrochemical Membrane Bioreactor (AnEMBR) with Conductive Hollow-fiber Membrane for Treatment of Low-

    E-Print Network [OSTI]

    A Novel Anaerobic Electrochemical Membrane Bioreactor (AnEMBR) with Conductive Hollow electro- chemical membrane bioreactor (AnEMBR). The Ni-HFM served the dual function as the cathode that typically needed for wastewater treatment using aerobic membrane bioreactors (1-2 kWh/m3 ). INTRODUCTION

  13. Analysis of the rate-limiting step of an anaerobic biotrickling filter removing Sudeep C. Popat a

    E-Print Network [OSTI]

    of attainable performance are not known. For example, reports on H2S removal in biological reactors show a vast of H2S in biotrickling filters. This paved the way for the development of high performance biotricklingAnalysis of the rate-limiting step of an anaerobic biotrickling filter removing TCE vapors Sudeep C

  14. Rockne, K. J. and R. Makkar (2001) Anaerobic electron acceptor amendment for aromatic pollutant biodegradation in sediments. In Situ and On Site Bioremediation.

    E-Print Network [OSTI]

    Rockne, Karl J.

    2001-01-01T23:59:59.000Z

    biodegradation in sediments. In Situ and On Site Bioremediation. 6(5):297-304. ANAEROBIC ELECTRON ACCEPTOR 60607 Presented at In Situ and On Site Bioremediation The Sixth International Symposium June 4-7, 2001

  15. Overcoming the anaerobic hurdle in phenotypic microarrays: Generation andvisualization of growth curve data for Desulfovibrio vulgaris Hildenborough

    SciTech Connect (OSTI)

    Borglin, Sharon E; Joyner, Dominique; Jacobsen, Janet; Mukhopadhyay, Aindrila; Hazen, Terry C.

    2008-10-04T23:59:59.000Z

    Growing anaerobic microorganisms in phenotypic microarrays (PM) and 96-well microtiter plates is an emerging technology that allows high throughput survey of the growth and physiology and/or phenotype of cultivable microorganisms. For non-model bacteria, a method for phenotypic analysis is invaluable, not only to serve as a starting point for further evaluation, but also to provide a broad understanding of the physiology of an uncharacterized wild-type organism or the physiology/phenotype of a newly created mutant of that organism. Given recent advances in genetic characterization and targeted mutations to elucidate genetic networks and metabolic pathways, high-throughput methods for determining phenotypic differences are essential. Here we outline challenges presented in studying the physiology and phenotype of a sulfate reducing anaerobic delta proteobacterium, Desulfovibrio vulgaris Hildenborough. Modifications of the commercially available OmniLog(TM) system (Hayward, CA) for experimental setup, and configuration, as well as considerations in PM data analysis are presented. Also highlighted here is data viewing software that enables users to view and compare multiple PM data sets. The PM method promises to be a valuable strategy in our systems biology approach to D. vulgaris studies and is readily applicable to other anaerobic and aerobic bacteria.

  16. Impact of EPS on Digestion of Waste Activate Sludge Thomas Gostanian

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Impact of EPS on Digestion of Waste Activate Sludge Thomas Gostanian Faculty Mentor: Professor Chul Park, Civil & Environmental Engineering Digestion by bacteria is a widely used method for organic is by either aerobic or anaerobic self-digestion, in which the bacteria consume their own mass. Currently

  17. Rates of microbial dechlorination of polychlorinated biphenyls (PCBs) in anaerobic sediments from Waukegan Harbor

    SciTech Connect (OSTI)

    Risatti, J.B.

    1992-01-01T23:59:59.000Z

    Sediments from 19 stations in Waukegan Harbor, Waukegan, Illinois were analyzed for polychlorinated biphenyl (PCB) content. Concentrations of PCBs ranged from a high of 17,251 ppm in slip 3 near the former drainage pipe from which PCB contaminated fluids entered the slip to a low of 5 ppm near the harbor mouth. The narrow range of values in slip 3 and at the mouth of the slip contrasts with values from previous studies that reported higher levels toward the mouth of the slip. PCB values also appear to be higher than expected on the west side of the harbor-this may be due to the resuspension and movement of sediments by boat traffic. Sediments from three stations in the harbor with varying levels of PCB contamination were incubated at 8 and 22 C for periods of 0 to 12 months. Data from these experiments indicate that anaerobic dechlorination of PCBs probably occurs in harbor sediments and that 50 percent dechlorination of many congeners occurs in less that 30 days.

  18. Separate collection of household food waste for anaerobic degradation - Comparison of different techniques from a systems perspective

    SciTech Connect (OSTI)

    Bernstad, A., E-mail: Anna.bernstad@chemeng.lth.se [Water and Environmental Engineering, Department of Chemical Engineering, Lund University (Sweden); Cour Jansen, J. la [Water and Environmental Engineering, Department of Chemical Engineering, Lund University (Sweden)

    2012-05-15T23:59:59.000Z

    Highlight: Black-Right-Pointing-Pointer Four modern and innovative systems for household food waste collection are compared. Black-Right-Pointing-Pointer Direct emissions and resource use were based on full-scale data. Black-Right-Pointing-Pointer Conservation of nutrients/energy content over the system was considered. Black-Right-Pointing-Pointer Systems with high energy/nutrient recovery are most environmentally beneficial. - Abstract: Four systems for household food waste collection are compared in relation the environmental impact categories eutrophication potential, acidification potential, global warming potential as well as energy use. Also, a hotspot analysis is performed in order to suggest improvements in each of the compared collection systems. Separate collection of household food waste in paper bags (with and without drying prior to collection) with use of kitchen grinders and with use of vacuum system in kitchen sinks were compared. In all cases, food waste was used for anaerobic digestion with energy and nutrient recovery in all cases. Compared systems all resulted in net avoidance of assessed environmental impact categories; eutrophication potential (-0.1 to -2.4 kg NO{sub 3}{sup -}eq/ton food waste), acidification potential (-0.4 to -1.0 kg SO{sub 2}{sup -}eq/ton food waste), global warming potential (-790 to -960 kg CO{sub 2}{sup -}eq/ton food waste) and primary energy use (-1.7 to -3.6 GJ/ton food waste). Collection with vacuum system results in the largest net avoidance of primary energy use, while disposal of food waste in paper bags for decentralized drying before collection result in a larger net avoidance of global warming, eutrophication and acidification. However, both these systems not have been taken into use in large scale systems yet and further investigations are needed in order to confirm the outcomes from the comparison. Ranking of scenarios differ largely if considering only emissions in the foreground system, indicating the importance of taking also downstream emissions into consideration when comparing different collection systems. The hot spot identification shows that losses of organic matter in mechanical pretreatment as well as tank connected food waste disposal systems and energy in drying and vacuum systems reply to the largest impact on the results in each system respectively.

  19. IN-SITU CHEMICAL STABILIZATION OF METALS AND RADIONUCLIDES THROUGH ENHANCED ANAEROBIC REDUCTIVE PRECIPITATION

    SciTech Connect (OSTI)

    Christopher C. Lutes; Angela Frizzell, PG; Todd A. Thornton; James M. Harrington

    2003-08-01T23:59:59.000Z

    The objective of this NETL sponsored bench-scale study was to demonstrate the efficacy of enhanced anaerobic reductive precipitation (EARP) technology for precipitating uranium using samples from contaminated groundwater at the Fernald Closure Project (FCP) in Cincinnati, Ohio. EARP enhances the natural biological reactions in the groundwater through addition of food grade substrates (typically molasses) to drive the oxidative-reductive potential of the groundwater to a lower, more reduced state, thereby precipitating uranium from solution. In order for this in-situ technology to be successful in the long term, the precipitated uranium must not be re-dissolved at an unacceptable rate once groundwater geochemical conditions return to their pretreatment, aerobic state. The approach for this study is based on the premise that redissolution of precipitated uranium will be slowed by several mechanisms including the presence of iron sulfide precipitates and coatings, and sorption onto fresh iron oxides. A bench-scale study of the technology was performed using columns packed with site soil and subjected to a continuous flow of uranium-contaminated site groundwater (476 {micro}g/L). The ''treated'' column received a steady stream of dilute food grade molasses injected into the contaminated influent. Upon attainment of a consistently reducing environment and demonstrated removal of uranium, an iron sulfate amendment was added along with the molasses in the influent solution. After a month long period of iron addition, the treatments were halted, and uncontaminated, aerobic, unamended water was introduced to the treated column to assess rebound of uranium concentrations. In the first two months of treatment, the uranium concentration in the treated column decreased to the clean-up level (30 {micro}g/L) or below, and remained there for the remainder of the treatment period. A brief period of resolubilization of uranium was observed as the treated column returned to aerobic conditions, but the concentration later returned to below the clean-up level. Speciation analysis was conducted on soil collected from the treated column after rebound testing. The experimental results show that: (a) The mass of uranium resolubilized in more than four months of column testing was much lower than the amount precipitated. (b) The majority of the uranium was precipitated in the first few inches of the treated column. The majority of the uranium precipitated was associated with iron oxides or in other immobile/sequestered phases. It is important to contrast this result with the results reported by Bryan (2003) who shows that most of the uranium associated with contaminated aquifer solids at Fernald under the existing natural attenuation/pump and treat with reinjection conditions is carbonate bound. Carbonate bound forms are traditionally seen as fairly mobile, but may not be under a calcite/dolomite saturated condition. Fernald is currently conducting further studies to investigate the mobility of the carbonate bound forms. (c) Though reoxidation concentrations from the bench-scale column exceeded 30 {micro}g/L for a time, they later returned to below this value. Effluent concentrations from the treated column are expected to over predict full-scale concentrations for reasons discussed in depth in the text. Finally, these results must be viewed in light of the site's ongoing pump-and-treat with reinjection system. There is reason to believe that although the pump-and-treat technology is currently effectively controlling the uranium plume and reducing the groundwater concentration, it may not be able to reach the treatment standard of 30 {micro}g/L within an economical operating lifetime and then maintain that concentration without rebound. This study suggests that Enhanced Anaerobic Reductive Precipitation can change the speciation and thus reduce the mobility of uranium at the site and expedite closure.

  20. Adaptation of the Biolog Phenotype MicroArrayTM Technology to Profile the Obligate Anaerobe Geobacter metallireducens

    SciTech Connect (OSTI)

    Joyner, Dominique; Fortney, Julian; Chakraborty, Romy; Hazen, Terry

    2010-05-17T23:59:59.000Z

    The Biolog OmniLog? Phenotype MicroArray (PM) plate technology was successfully adapted to generate a select phenotypic profile of the strict anaerobe Geobacter metallireducens (G.m.). The profile generated for G.m. provides insight into the chemical sensitivity of the organism as well as some of its metabolic capabilities when grown with a basal medium containing acetate and Fe(III). The PM technology was developed for aerobic organisms. The reduction of a tetrazolium dye by the test organism represents metabolic activity on the array which is detected and measured by the OmniLog(R) system. We have previously adapted the technology for the anaerobic sulfate reducing bacterium Desulfovibrio vulgaris. In this work, we have taken the technology a step further by adapting it for the iron reducing obligate anaerobe Geobacter metallireducens. In an osmotic stress microarray it was determined that the organism has higher sensitivity to impermeable solutes 3-6percent KCl and 2-5percent NaNO3 that result in osmotic stress by osmosis to the cell than to permeable non-ionic solutes represented by 5-20percent ethylene glycol and 2-3percent urea. The osmotic stress microarray also includes an array of osmoprotectants and precursor molecules that were screened to identify substrates that would provide osmotic protection to NaCl stress. None of the substrates tested conferred resistance to elevated concentrations of salt. Verification studies in which G.m. was grown in defined medium amended with 100mM NaCl (MIC) and the common osmoprotectants betaine, glycine and proline supported the PM findings. Further verification was done by analysis of transcriptomic profiles of G.m. grown under 100mM NaCl stress that revealed up-regulation of genes related to degradation rather than accumulation of the above-mentioned osmoprotectants. The phenotypic profile, supported by additional analysis indicates that the accumulation of these osmoprotectants as a response to salt stress does not occur in G.m. and response to stress must occur by other mechanisms. The Phenotype MicroArray technology can be reliably used as a rapid screening tool for characterization in anaerobic microbial ecology.

  1. Mesophilic and thermophilic anaerobic biodegradability of water hyacinth pre-treated at 80 {sup o}C

    SciTech Connect (OSTI)

    Ferrer, Ivet, E-mail: ivet.ferrer@upc.ed [Environmental Engineering Division, Department of Hydraulic, Maritime and Environmental Engineering. Technical University of Catalonia, C/ Jordi Girona 1-3, E-08034 Barcelona (Spain); Palatsi, Jordi [GIRO Technological Centre, Rambla Pompeu Fabra 1, E-08100 Mollet del Valles, Barcelona (Spain); Campos, Elena [Laboratory of Environmental Engineering, Centre UdL-IRTA, Rovira Roure 191, E-25198 Lleida (Spain); Flotats, Xavier [GIRO Technological Centre, Rambla Pompeu Fabra 1, E-08100 Mollet del Valles, Barcelona (Spain); Department of Agrifood Engineering and Biotechnology, Technical University of Catalonia, Parc Mediterrani de la Tecnologia Edifici D-4, E-08860 Castelldefels, Barcelona (Spain)

    2010-10-15T23:59:59.000Z

    Water hyacinth (Eichornia crassipes) is a fast growing aquatic plant which causes environmental problems in continental water bodies. Harvesting and handling this plant becomes an issue, and focus has been put on the research of treatment alternatives. Amongst others, energy production through biomethanation has been proposed. The aim of this study was to assess the anaerobic biodegradability of water hyacinth under mesophilic and thermophilic conditions. The effect of a thermal sludge pre-treatment at 80 {sup o}C was also evaluated. To this end, anaerobic biodegradability tests were carried out at 35 {sup o}C and 55 {sup o}C, with raw and pre-treated water hyacinth. According to the results, the thermal pre-treatment enhanced the solubilisation of water hyacinth (i.e. increase in the soluble to total chemical oxygen demand (COD)) from 4% to 12% after 30 min. However, no significant effect was observed on the methane yields (150-190 L CH{sub 4}/kg volatile solids). Initial methane production rates for thermophilic treatments were two fold those of mesophilic ones (6-6.5 L vs. 3-3.5 L CH{sub 4}/kg COD.day). Thus, higher methane production rates might be expected from thermophilic reactors working at short retention times. The study of longer low temperature pre-treatments or pre-treatments at elevated temperatures coupled to thermophilic reactors should be considered in the future.

  2. New constraints on methane fluxes and rates of anaerobic methane oxidation in a Gulf of Mexico brine pool via in situ mass spectrometry

    E-Print Network [OSTI]

    Girguis, Peter R.

    , likely exceeding reserves of conventional oil and gas (Collett and Kuuskraa, 1998). In deep-ocean regionsNew constraints on methane fluxes and rates of anaerobic methane oxidation in a Gulf of Mexico Keywords: Methane flux Mass spectrometer Brine pool Methane oxidation Gulf of Mexico a b s t r a c t Deep

  3. A Review of Today's Anaerobic Diges6on Technology of Organic Municipal Solid Waste and Its Implementa6on in California

    E-Print Network [OSTI]

    Iglesia, Enrique

    . Organic Municipal Solid Waste Management · 19.74 million tons of organic waste or 4,935 kWh can be produced from organic municipal solid waste per yearA Review of Today's Anaerobic Diges6on Technology of Organic Municipal Solid

  4. Thermochemical processing of digested sludge and its implications in the United States Jennifer Lawrence, Ruth Reed, Sara Tischhauser, Casey Zak

    E-Print Network [OSTI]

    Iglesia, Enrique

    , or biomethane) for meeting onsite heat #12;and power needs. Biogas is a methanerich byproduct of this process, or biomethane, is produced as a result of this process and can either be flared off to reduce greenhouse gas of anaerobic digestion (AD) to reduce sludge volumes as well as produce digester gas (also known as biogas

  5. Reducing the Anaerobic Digestion Model N1 for its application to an industrial wastewater treatment plant

    E-Print Network [OSTI]

    Boyer, Edmond

    biodegradable soluble substances (European Commission, 2003). Consequently, in the last decades, AWT has evolved., 2003, Lee et al., 2009

  6. Testing the profitability of Anaerobic Digestion in a large-scale UK dairy farm 

    E-Print Network [OSTI]

    Coz Leniz, Luis Fernando

    2011-11-24T23:59:59.000Z

    , a set price determined by the Ministry of Energy and Climate Change and paid by the energy supplying companies for every unit of electricity generated through renewable sources. This paper tests the economics, return on investment, and overall value...

  7. Alternative energy systems for Puerto Rico : analysis and comparison of anaerobic waste digestion

    E-Print Network [OSTI]

    Cuevas, Emil A. (Emil André Cuevas Meléndez)

    2006-01-01T23:59:59.000Z

    Energy prices in Puerto Rico are increasing constantly, making evident the need for alternative energy sources. Several methods to produce power have been developed as alternatives to burning petroleum, such as solar energy ...

  8. DESIGN OF SOFTWARE SENSORS FOR UNMEASURABLE VARIABLES OF ANAEROBIC DIGESTION PROCESSES

    E-Print Network [OSTI]

    Boyer, Edmond

    stirred tank bioreactors (CSTR), the organic matter is depolluted by microorganisms into biogas (Deublein and Steinhauser, 2008). The biogas is an additional energy source which can replace fossil fuel processes are too expensive to be measured. In practice, only biogas flow rate can be easily measured on

  9. Micro-scale anaerobic digestion of point source components of organic fraction of municipal solid waste

    E-Print Network [OSTI]

    Columbia University

    the inlet of a function- ing plug-flow biogas fermentor. These were removed at periodic intervals cab- bage waste, banana peels, and orange peels fermented rapidly both in a plug-flow biogas reactor. Introduction Micro-scale biomethanation (0.1­1.0 ton per day, tpd) is increasingly being tried

  10. Biomass Program Perspectives on Anaerobic Digestion and Fuel Cell Integration at Biorefineries

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureCommentsEnergyandapproximately 10 wt%inandWBSBiomass Program

  11. A Design-Builder's Perspective: Anaerobic Digestion, Forest County Potawatomi Community - A Case Study

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartmentDepartment of Energy This documentFormerBerkeley Lab'sDrewDOE

  12. Floodplain Assessment for Installation of a Renewable Energy Anaerobic Digester Facility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdf Flash2006-52.pdf0.pdf Flash2008-50.pdf4.pdf0 Flash2011-40 IssueFlickrfor

  13. Enhanced Anaerobic Digestion and Hydrocarbon Precursor Production Presentation for BETO 2015 Project Peer Review

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisoryStandard |inHVACEnforcementEngaging Students in20High

  14. Barriers to Implementing Anaeribic Digestion on Dairy Farms in Scotland 

    E-Print Network [OSTI]

    Graham, Leonie

    2011-11-23T23:59:59.000Z

    agricultural CH4 emissions, with liquid systems commonly used by the dairy industry contributing up to 74% of this. Anaerobic digestion (AD) is able to reduce emissions from the dairy industry by capturing CH4 emissions released from slurry and forming a biogas...

  15. Enhancement of Bacterial Transport in Aerobic and Anaerobic Environments: Assessing the Effect of Metal Oxide Chemical Heterogeneities

    SciTech Connect (OSTI)

    T.C. Onstott

    2005-09-30T23:59:59.000Z

    The goal of our research was to understand the fundamental processes that control microbial transport in physically and chemically heterogeneous aquifers and from this enhanced understanding determine the requirements for successful, field-scale delivery of microorganisms to metal contaminated subsurface sites. Our specific research goals were to determine; (1) the circumstances under which the preferential adsorption of bacteria to Fe, Mn, and Al oxyhydroxides influences field-scale bacterial transport, (2) the extent to which the adhesion properties of bacterial cells affect field-scale bacterial transport, (3) whether microbial Fe(III) reduction can enhance field-scale transport of Fe reducing bacteria (IRB) and other microorganisms and (4) the effect of field-scale physical and chemical heterogeneity on all three processes. Some of the spin-offs from this basic research that can improve biostimulation and bioaugmentation remediation efforts at contaminated DOE sites have included; (1) new bacterial tracking tools for viable bacteria; (2) an integrated protocol which combines subsurface characterization, laboratory-scale experimentation, and scale-up techniques to accurately predict field-scale bacterial transport; and (3) innovative and inexpensive field equipment and methods that can be employed to enhance Fe(III) reduction and microbial transport and to target microbial deposition under both aerobic and anaerobic conditions.

  16. Thermoterrabacterium ferrireducens gen. nov., sp. nov., a thermophilic anaerobic dissimilatory Fe(III)-reducing bacterium from a continental hot spring

    SciTech Connect (OSTI)

    Slobodkin, A.; Wiegel, J. [Univ. of Georgia, Athens, GA (United States); Reysenbach, A.L. [Rutgers Univ., New Brunswick, NJ (United States)] [and others

    1997-04-01T23:59:59.000Z

    A strain of a thermophilic, anaerobic, dissimilatory, Fe(III)-reducing bacterium, Thermoterrabacterium ferrireducens gen. nov., sp. nov. (type strain JW/AS-Y7{sup T}; DSM 11255), was isolated from hot springs in Yellowstone National Park and New Zealand. The gram-positive-staining cells occurred singly or in pairs as straight to slightly curved rods, 0.3 to 0.4 by 1.6 to 2.7 {mu}m, with rounded ends and exhibited a tumbling motility. Spores were not observed. The temperature range for growth was 50 to 74{degrees}C with an optimum at 65{degrees}C. The pH range for growth at 65{degrees}C was from 5.5 to 7.6, with an optimum at 6.0 to 6.2. The organism coupled the oxidation of glycerol to reduction of amorphous Fe(III) oxide or Fe(III) citrate as an electron acceptor. In the presence as well as in the absence of Fe(III) and in the presence of CO{sub 2}, glycerol was metabolized by incomplete oxidation to acetate as the only organic metabolic product; no H{sub 2} was produced during growth. The organism utilized glycerol, lactate, 1,2-propanediol, glycerate, pyruvate, glucose, fructose, mannose, and yeast extract as substrates. In the presence of Fe(III) the bacterium utilized molecular hydrogen. The organism reduced 9,10-anthraquinone-2,6-disulfonic acid, fumarate (to succinate), and thiosulfate (to elemental sulfur) but did not reduce MnO{sub 2}, nitrate, sulfate, sulfite, or elemental sulfur. The G+C content of the DNA was 41 mol% (as determined by high-performance liquid chromatography). The 16S ribosomal DNA sequence analysis placed the isolated strain as a member of a new genus within the gram-type positive Bacillus-Clostridium subphylum.

  17. Performance evaluation of a completely stirred anaerobic reactor treating pig manure at a low range of mesophilic conditions

    SciTech Connect (OSTI)

    Guo, Jianbin, E-mail: jianbinguo@gmail.com [Department of Environmental Engineering, Tsinghua University, Beijing 100084 (China); Dong, Renjie [College of Engineering, China Agricultural University, P.O. Box 184, Beijing 100083 (China); Clemens, Joachim [Institute of Crop Science and Resource Reservation (INRES), University of Bonn, Karlrobert-Kreiten-Strasse 13, 53115 Bonn (Germany); Wang, Wei [Department of Environmental Engineering, Tsinghua University, Beijing 100084 (China)

    2013-11-15T23:59:59.000Z

    Highlights: • The biogas process can run stably at 20 °C at extremely low OLR after long-term acclimation of bacteria. • A biogas plant running at 28 °C seems as efficient as that operated at 38 °C at low OLR of 1.3 g ODM L{sup ?1} d{sup ?1}. • Lower temperature operation is inadvisable for the commercial biogas plant running at rather high OLR. • The estimated sludge yield at 28 °C is higher than that at 38 °C. - Abstract: Many Chinese biogas plants run in the lower range of mesophilic conditions. This study evaluated the performance of a completely stirred anaerobic reactor treating pig manure at different temperatures (20, 28 and 38 °C). The start-up phase of the reactor at 20 °C was very long and extremely poor performance was observed with increasing organic loading rate (OLR). At an OLR of 4.3 g ODM L{sup ?1} d{sup ?1}, methane production at 28 °C was comparable (3% less) with that at 38 °C, but the risk of acidification was high at 28 °C. At low OLR (1.3 g ODM L{sup ?1} d{sup ?1}), the biogas process appeared stable at 28 °C and gave same methane yields as compared to the reactor operating at 38 °C. The estimated sludge yield at 28 °C was 0.065 g VSS g{sup ?1} COD{sub removed,} which was higher than that at 38 °C (0.016 g VSS g{sup ?1} COD{sub removed})

  18. Interaction between temperature and ammonia in mesophilic digesters for animal waste treatment

    E-Print Network [OSTI]

    Angenent, Lars T.

    and agricultural processing, centralized and decentralized wastewater treatment plants, and solid waste recoveryInteraction between temperature and ammonia in mesophilic digesters for animal waste treatment, and their interconnectivity on the methane yield of anaerobic processes for animal waste treatment. During period 1 (day 0

  19. Metabolic analysis of the soil microbe Dechloromonas aromatica str. RCB: indications of a surprisingly complex life-style and cryptic anaerobic pathways for aromatic degradation

    SciTech Connect (OSTI)

    Salinero, Kennan Kellaris; Keller, Keith; Feil, William S.; Feil, Helene; Trong, Stephan; Di Bartolo, Genevieve; Lapidus, Alla

    2008-11-17T23:59:59.000Z

    Initial interest in Dechloromonas aromatica strain RCB arose from its ability to anaerobically degrade benzene. It is also able to reduce perchlorate and oxidize chlorobenzoate, toluene, and xylene, creating interest in using this organism for bioremediation. Little physiological data has been published for this microbe. It is considered to be a free-living organism. The a priori prediction that the D. aromatica genome would contain previously characterized 'central' enzymes involved in anaerobic aromatic degradation proved to be false, suggesting the presence of novel anaerobic aromatic degradation pathways in this species. These missing pathways include the benzyl succinyl synthase (bssABC) genes (responsible for formate addition to toluene) and the central benzoylCoA pathway for monoaromatics. In depth analyses using existing TIGRfam, COG, and InterPro models, and the creation of de novo HMM models, indicate a highly complex lifestyle with a large number of environmental sensors and signaling pathways, including a relatively large number of GGDEF domain signal receptors and multiple quorum sensors. A number of proteins indicate interactions with an as yet unknown host, as indicated by the presence of predicted cell host remodeling enzymes, effector enzymes, hemolysin-like proteins, adhesins, NO reductase, and both type III and type VI secretory complexes. Evidence of biofilm formation including a proposed exopolysaccharide complex with the somewhat rare exosortase (epsH), is also present. Annotation described in this paper also reveals evidence for several metabolic pathways that have yet to be observed experimentally, including a sulphur oxidation (soxFCDYZAXB) gene cluster, Calvin cycle enzymes, and nitrogen fixation (including RubisCo, ribulose-phosphate 3-epimerase, and nif gene families, respectively). Analysis of the D. aromatica genome indicates there is much to be learned regarding the metabolic capabilities, and life-style, for this microbial species. Examples of recent gene duplication events in signaling as well as dioxygenase clusters are present, indicating selective gene family expansion as a relatively recent event in D. aromatica's evolutionary history. Gene families that constitute metabolic cycles presumed to create D. aromatica's environmental 'foot-print' indicate a high level of diversification between its predicted capabilities and those of its close relatives, A. aromaticum str EbN1 and Azoarcus BH72.

  20. Electrochemical detection of organic acids for anaerobic-digestor control and identification of biocorrosion inception on ferrous substrates. Final report, January 1-December 31, 1990

    SciTech Connect (OSTI)

    Cook, R.L.; Patel, J.; Sammells, A.F.

    1991-01-01T23:59:59.000Z

    The program was directed towards developing in situ techniques for the detection of organic acids present in both anaerobic digestors and as a result of microbial induced corrosion (MIC). The investigation was extneded to include investigating microprobes for pH and chloride ion detection as a strategy for gaining insight into the mechanism of MIC. Experimental work identified a reversible fiber optic chemical sensor for acetate detection in aqueous solution based upon the use of rhodium octaethylporphine immobilized as a molecular host on a fiber optic substrate. Data obtained from systematically performed electrochemical measurements on gas pipeline steel in simulated bacterial metabolite mixtures were analyzed using multivariante statistical analysis; however, no definitive conclusions could be made as to the relative influence of factors aggrevating MIC induced corrosion processes. Fabrication of microelectrodes compatible for monitoring of chloride and pH in MIC corrosion pits was achieved and initial testing performed.

  1. Speciation of Arsenic in An Anaerobic Treatment System at a Pb-Zn Smelter Site, Gold Roaster Products, Cu Smelter Stack Dust And Impacted Soil

    SciTech Connect (OSTI)

    Paktunc, D.

    2009-05-28T23:59:59.000Z

    Mining and metallurgical processing of gold and base metal ores often results in solid wastes and effluents containing high concentrations of arsenic. In addition, arsenic can be released to the atmosphere from gold roasters and base metal smelters. Speciation of arsenic in roaster products, in a stack sample from a copper smelter, in organic soils impacted by smelter emissions, and in an anaerobic effluent treatment system at a smelter site was determined in order to broaden our understanding of the nature and occurrence of arsenic in a wider range of metallurgical wastes. Micro-XANES spectra obtained from iron oxide particles forming in a gold roaster indicate preferential enrichment of As{sup 3+} species in maghemite-rich domains and microlayers. In comparison, haematite-rich iron oxide particles are dominated by As{sup 5+} species. It appears that maghemite is retarding oxidation of arsenic and its volatilisation during roasting. Arsenic occurs as both As{sup 3+} and As{sup 5+} species in a stack sample emitted from a Cu smelter, confined to fine-grained secondary product layers accumulated on the surfaces of spherical Cu particles. This is probably resulting from condensation of As species upon cooling following their volatilisation during the combustion process. Soil samples collected at various distances from the Cu smelter are dominated by As{sup 5+} species including monomethylarsonic acid and tetramethylarsonium iodide as the organic arsenic species. The presence of reduced As{sup 3+} species highlights the importance of organic material influencing the speciation of arsenic and mineralogical transformations taking place within the soil profile. The XANES spectra indicate that arsenic occurs predominantly as aqueous arsenite species in the anaerobic treatment system, contrary to the conventional thinking of As retention by the formation of secondary sulfides.

  2. Speciation of arsenic in an anaerobic treatment system at a Pb-Zn smelter site, gold roaster products, Cu smelter stack dust and impacted soil

    SciTech Connect (OSTI)

    Paktunc, D. (CCM)

    2008-09-30T23:59:59.000Z

    Mining and metallurgical processing of gold and base metal ores often results in solid wastes and effluents containing high concentrations of arsenic. In addition, arsenic can be released to the atmosphere from gold roasters and base metal smelters. Speciation of arsenic in roaster products, in a stack sample from a copper smelter, in organic soils impacted by smelter emissions, and in an anaerobic effluent treatment system at a smelter site was determined in order to broaden our understanding of the nature and occurrence of arsenic in a wider range of metallurgical wastes. Micro-XANES spectra obtained from iron oxide particles forming in a gold roaster indicate preferential enrichment of As{sup 3+} species in maghemite-rich domains and microlayers. In comparison, haematite-rich iron oxide particles are dominated by As{sup 5+} species. It appears that maghemite is retarding oxidation of arsenic and its volatilisation during roasting. Arsenic occurs as both As{sup 3+} and As{sup 5+} species in a stack sample emitted from a Cu smelter, confined to fine-grained secondary product layers accumulated on the surfaces of spherical Cu particles. This is probably resulting from condensation of As species upon cooling following their volatilisation during the combustion process. Soil samples collected at various distances from the Cu smelter are dominated by As{sup 5+} species including monomethylarsonic acid and tetramethylarsonium iodide as the organic arsenic species. The presence of reduced As{sup 3+} species highlights the importance of organic material influencing the speciation of arsenic and mineralogical transformations taking place within the soil profile. The XANES spectra indicate that arsenic occurs predominantly as aqueous arsenite species in the anaerobic treatment system, contrary to the conventional thinking of As retention by the formation of secondary sulfides.

  3. Effects of temperature and temperature shock on the performance and microbial community structure of a submerged anaerobic membrane bioreactor

    E-Print Network [OSTI]

    Qin, Wensheng

    ). The effects of digestion temperature and temperature shock on the biogas yields, temperature shocks in biogas pro- duction rate and biogas composition. However, temperature shocks resulted in an increase in biogas pro- duction temporarily. The SAnMBR could tolerate the 5 and 10 °C temperature shocks at 37 °C

  4. 5-Cyano-2,3-ditolyl tetrazolium chloride (CTC) reduction in a mesophilic anaerobic digester: Measuring redox behavior,

    E-Print Network [OSTI]

    Pace, Norman

    this work suggest that CTC reduction in cell-free samples may impede accurate enzyme activity measurements: Measuring redox behavior, differentiating abiotic reduction, and comparing FISH response as an activity). Dehydrogenase activity assays and fluorescent in situ hybridization (FISH) were simultaneously carried out

  5. Comparative Genomics Analysis and Phenotypic Characterization of Shewanella putrefaciens W3-18-1: Anaerobic Respiration, Bacterial Microcompartments, and Lateral Flagella

    SciTech Connect (OSTI)

    Qiu, D.; Tu, Q.; He, Zhili; Zhou, Jizhong

    2010-05-17T23:59:59.000Z

    Respiratory versatility and psychrophily are the hallmarks of Shewanella. The ability to utilize a wide range of electron acceptors for respiration is due to the large number of c-type cytochrome genes present in the genome of Shewanella strains. More recently the dissimilatory metal reduction of Shewanella species has been extensively and intensively studied for potential applications in the bioremediation of radioactive wastes of groundwater and subsurface environments. Multiple Shewanella genome sequences are now available in the public databases (Fredrickson et al., 2008). Most of the sequenced Shewanella strains were isolated from marine environments and this genus was believed to be of marine origin (Hau and Gralnick, 2007). However, the well-characterized model strain, S. oneidensis MR-1, was isolated from the freshwater lake sediment of Lake Oneida, New York (Myers and Nealson, 1988) and similar bacteria have also been isolated from other freshwater environments (Venkateswaran et al., 1999). Here we comparatively analyzed the genome sequence and physiological characteristics of S. putrefaciens W3-18-1 and S. oneidensis MR-1, isolated from the marine and freshwater lake sediments, respectively. The anaerobic respirations, carbon source utilization, and cell motility have been experimentally investigated. Large scale horizontal gene transfers have been revealed and the genetic divergence between these two strains was considered to be critical to the bacterial adaptation to specific habitats, freshwater or marine sediments.

  6. Improving the Methane Production in the Co-Digestion of Microalgae and Cattle Manure

    E-Print Network [OSTI]

    Cantu, Matthew Scott

    2014-04-28T23:59:59.000Z

    such as ethanol and biodiesel are obtained through fermentation reactions and esterification. Many of these fuels are comparable to the established fossil fuels in the modern market, and with the proper equipment, can be used as a replacement. A useful.... Primarily, algae is grown as a resource in the production of biodiesel due to high lipid counts. As an anaerobic digestion feedstock, however, research can still be done to optimize methane production. Algae can provide high amounts of nutrients...

  7. Thermosyntropha lipolytica gen. nov., sp. nov., a lipolytic, anaerobic, alkalitolerant, thermophilic bacterium utilizing short- and long-chain fatty acids in syntrophic coculture with a methanogenic archaeum

    SciTech Connect (OSTI)

    Svetlitshnyi, V.; Wiegel, J. [Univ. of Georgia, Athens, GA (United States); Rainey, F. [German Collection of Microorganisms and Cell Cultures, Braunschweig (Germany)

    1996-10-01T23:59:59.000Z

    Three strains of an anaerobic thermophilic organoheterotrophic lipolytic alkalitolerant bacterium, Thermosyntropha lipolytica gen. nov., sp. nov. (type strain JW/VS-264{sup T}; DSM 11003) were isolated from alkaline hot springs of Lake Bogoria (Kenya). The cells were nonmotile, non-spore forming, straight or slightly curved rods. At 60{degrees}C, the pH range for growth determined at 25{degrees}C [pH{sup 25{degrees}C}] was 7.15 to 9.5, with an optimum between 8.1 and 8.9 (pH{sup 60{degrees}C} of 7.6 and 8.1). At a pH{sup 25{degrees}C} of 8.5 temperature range for growth was from 52 to 70{degrees}C, with an optimum between 60 and 66{degrees}C. The shortest doubling time was around 1 h. In pure culture the bacterium grew in a mineral base medium supplemented with yeast extract, tryptone, Casamino Acids, betaine, and crotonate as carbon sources, producing acetate as a major product and constitutively a lipase. During growth in the presence of olive oil, free long-chain fatty acids were accumulated in the medium but the pure culture syntrophic coculture (Methanobacterium strain JW/VS-M29) the lipolytic bacteria grew on triacylglycerols and linear saturated and unsaturated fatty acids with 4 to 18 carbon atoms, but glycerol was not utilized. Fatty acids with even numbers of carbon atoms were degraded to acetate and methane, while from odd-numbered fatty acids 1 mol of propionate per mol of fatty acid was additionally formed. 16S rDNA sequence analysis identified Syntrophospora and Syntrophomonas spp. as closest phylogenetic neighbors.

  8. The Epidemiology of Schistosomiasis Reinfection and Reemergence in Sichuan, China: Implications for Surveillance and Intervention

    E-Print Network [OSTI]

    Carlton, Elizabeth Jean

    2010-01-01T23:59:59.000Z

    their household. If anaerobic biogas digesters were present,improved sanitation if a biogas digester was present andof anaerobic biogas digesters [23], a second biogas-adjusted

  9. International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2013-01-01T23:59:59.000Z

    no date) Use of biogas from anaerobic sludge digestion for2010). The biogas produced by sludge anaerobic digestion canThickener Sludge pretreatment Biogas Digester Residual

  10. Floodplain Assessment for Installation of a Renewable Energy...

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

    for Installation of a Renewable Energy Anaerobic Digester Facility Floodplain Assessment for Installation of a Renewable Energy Anaerobic Digester Facility Floodplain Assessment...

  11. Anaerobic Digestion of Algal Biomass Residues with Nutrient Recycle Microalgae are currently considered as a renewable source of liquid and gaseous biofuels and

    E-Print Network [OSTI]

    Collins, Gary S.

    are currently considered as a renewable source of liquid and gaseous biofuels and a practical technology of the most sustainable and promising of biofuel feedstock, demonstrating particularly high growth rates, and their entrained lipids, can offer several different types of biofuel and bioenergy production options including

  12. COMPARISON OF POLLUTING POTENTIALS OF LIQUID EMISSIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in agriculture, · generating renewable energy (biogas) with anaerobic digestion. The two first objectives can

  13. Microbial Fuel Cells: Now Let us Talk about Energy Department of Civil Engineering and Mechanics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, United States

    E-Print Network [OSTI]

    is an obvious advantage over other energy recovery methods, such as anaerobic digesters that require biogas

  14. 8th i-CIPEC8th International Conference/Exhibition on Combustion, Incineration/Pyrolysis, Emission and Climate Change

    E-Print Network [OSTI]

    Shepard, Kenneth

    Anaerobic Digestion and Biogas ·Emission Control Advanced Emission Control for NOx, SOx, HCL, VOCs et al

  15. Biological Hydrogen Production Measured in Batch Anaerobic

    E-Print Network [OSTI]

    nonrenewable sources such as natural gas and petroleum hydrocarbons via steam reforming. In order for hydrogen such as hydrogen, acetate, ethanol, and others. The hydrogen-acetate couple produces more ATP per mole of substrate than alcohols such as ethanol and butanol and is the energetically "preferred" bacterial fer- mentation

  16. ORIGINAL PAPER Biostimulation of anaerobic BTEX biodegradation

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    -methanogenic biostimulation could enhance source zone bioremediation of ground- water aquifers impacted by biodiesel blends of biodiesel could lead to a higher frequency of ground- water contamination by accidental and incidental- zene and xylenes isomers) or PAHs (polycyclic aromatic hydrocarbons), which can become co-occur- ring

  17. Extended abstract Anaerobic chytrids from herbivores

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and hydrogenase. Current opinion supports the view that hydrogeno- somes evolved independently from mito- chondria

  18. UNCORRECTEDPROOF Assessment of anaerobic benzene degradation

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    in the USA that are contaminated with gasoline leaks from underground storage tanks (UST) (USEPA, 2005 to remediate more than 50% of the existing gasoline-contaminated UST sites (USEPA, 2000). However

  19. Anaerobic microbial remobilization of coprecipitated metals

    DOE Patents [OSTI]

    Francis, A.J.; Dodge, C.J.

    1994-10-11T23:59:59.000Z

    A process is provided for solubilizing coprecipitated metals. Metals in waste streams are concentrated by treatment with an iron oxide coprecipitating agent. The coprecipitated metals are solubilized by contacting the coprecipitate with a bacterial culture of a Clostridium species ATCC 53464. The remobilized metals can then be recovered and recycled. 4 figs.

  20. Cayuga County Regional Digester - Vision Becomes Reality - Final Report

    SciTech Connect (OSTI)

    Kamyar V. Zadeh, Ph.D.; Blue Electron Technology Solutions International LLC

    2013-03-12T23:59:59.000Z

    With an average herd size of 113 mature cows, Cayuga County is home to 280 dairy farms and 31,500 dairy milking cows producing approximately 855 million gallons of milk per year. The Cayuga Dairy industry is a major contributor to the countys economy, employing nearly 1200 people, while generating $140,000,000 of revenue from sale of milk alone. At the same time, the Cayuga County dairy industry also produces 5.7 million gallons of manure daily: a) Nearly 34% of this manure is produced on smaller farms. b) Digesters are expensive pieces of equipment and require attention and care. c) The on-farm digester systems have fairly long payback (>10 years) even for larger CAFO farms (>1000 milking cows). In 2005, Cayuga County Soil and Water Conservation District (The District), a Public Agency under Cayuga County, decided to undertake a centralized community digester project. The primary goal of the project was to develop an economically sustainable model, under the auspices of The District to address manure management issues facing the smaller dairies, improve the water quality and improve the quality of life for Cayuga County residents. It is believed that the District has accomplished this goal by completing construction of Cayuga County Regional Digester on a parcel of land behind the Cayuga County Natural Resource Center located at 7413 County House Road in the Town of Sennett in Cayuga County, New York. The digester facility consists of the following major components. 1. Transfer Station: This an indoor truck bay, where 35,000 gallons of manure from three local farms, 8,500 gallons of liquid organic food-processor waste, and 1,200 gallons of brown grease are unloaded from tanker trucks and the digested slurry is loaded onto the tanker trucks for delivery back to the participating farms. 2. Anaerobic Digester: The project utilizes a hydraulic mix anaerobic digester, a unique design that has no internal moving parts for mixing. The digester, which operates at mesophilic temperatures, is designed to process the daily feedstock and produce 220,000 SCF2 of biogas per day. The digester also produces 44,000 gallons of digested slurry per day. 3. Biogas Conditioning System: The plant employs a biological biogas conditioning system to remove the H2S and moisture contents of the biogas and prepare it to be used by the plant generation system. 4. Combined Heat and Power System (CHP): This is a 633kW high efficiency biogas-fired GE-Jenbacher model JMS-312 GS-NL reciprocating engine cogeneration system. The heat recovery system incorporated into the package is designed to capture the waste heat from the engine exhaust, the jacket cooling water and the engine oil circuit. 5. Electrical Substation and Power Distribution Systems: An electrical distribution system has been constructed on-site that aggregates the electrical service of the different county buildings on the District campus into a county owned electric distribution system that is interconnected with the CHP and the local electric grid. The electrical system is designed, in accordance with the utility guidelines, to allow grid-parallel operation of CHP and provide for import and export of electric power. 6. Thermal Energy Distribution System: The heat recovery system has been integrated into a high temperature water distribution system that distributes the heat to the thermal circuits for the anaerobic digester facility. Additional piping has also been installed to transfer the remaining thermal energy to other county buildings on the campus. On a daily basis, the plant will co-process 35,000 gallons of manure from local dairy farms, 8,500 gallons of food-processor waste and 1,200 gallons of brown grease to produce 200,000 ft3/d of biogas and 44,000 gallons of pathogen-free nutrient-rich digested slurry for agricultural use by farms and in the local area. The biogas fueled CHP produces 5,157,000 kWh of electricity and 19,506 dekatherms of thermal energy per year. Electrical power generated by the cogeneration system powers all the buildings on the Cayuga County campus an

  1. Environmental and Water Resources Engineering Seminar Wednesday, March 20, 2013, 4:00 5:00 PM

    E-Print Network [OSTI]

    Kamat, Vineet R.

    of Anaerobic Membrane Bioreactor and High Rate Activated Sludge with Anaerobic Digestion Abstract. Anaerobic membrane bioreactor (AnMBR) and high rate activated sludge with anaerobic digestion (HRAS+AD) are two processes that strive to recover energy in the form of biogas either directly from domestic wastewater (An

  2. Integrated Biorefinery Research Facility (IBRF I-II) (Post CD...

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

    Perspective: Anaerobic Digestion, Forest County Potawatomi Community - A Case Study Independent Oversight Activity Report, Hanford Sludge Treatment Project - September 2013...

  3. Multiple Syntrophic Interactions in a Terephthalate-Degrading Methanogenic Consortium

    E-Print Network [OSTI]

    Lykidis, Athanasios

    2012-01-01T23:59:59.000Z

    a methanogenic digester sludge. International Journal ofphosphorus removal (EBPR) sludge communities. Naturedegrading anaerobic granular sludge system. Microbiology

  4. Transforming trash: reuse as a waste management and climate change mitigation strategy

    E-Print Network [OSTI]

    Vergara, Sintana Eugenia

    2011-01-01T23:59:59.000Z

    material recycling, energy production, composting, or directwith reduced energy production, reduced uncontrolled dumpingand Ahring 2006). Energy production from anaerobic digestion

  5. FocusonResearch Caroline Whitacre Vice President for Research (614) 247-8356 whitacre.3@osu.edu External funding totals rise for FY 2011

    E-Print Network [OSTI]

    to develop a biogas industry in Ohio. Four anaerobic digesters have been built, and nine new projects

  6. ISWA commitments on waste and climate ISWA General Secretariat

    E-Print Network [OSTI]

    and utilisation, and use of anaerobic digester biogas can play important roles in reducing fossil fuel consumption

  7. Waste-to-Energy and Fuel Cell T h l i O i

    E-Print Network [OSTI]

    . #12;Global Approach for Using Biogas Innovation for Our Energy Future #12;Anaerobic Digestion natural gas. Additi l l i t bi fAdditional cleanup is necessary to use biogas from anaerobic digesters Production via Anaerobic Digestion · Breweries (~73 Watts per barrel of beer) · Municipal Waste Water

  8. u.s. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA...

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

    vessel that processes dairy manure and other organic wastes in an oxygen-free environment designed to induce digestion by anaerobic bacteria. The digested fiber solids are...

  9. Optimization Online - Digest Archive

    E-Print Network [OSTI]

    Optimization Online Digest Archive. Subscribe to the digest. ... Online is supported by the Mathematical Optmization Society. Mathematical Optimization Society.

  10. Digestion Experiments.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1908-01-01T23:59:59.000Z

    , these determinations have much less value than those made with longer periods. It is important to emphasize the fact that the digestion period should not be too short. In period four with Steer No. 2 the ciry matter excreted varied from 1974 to 2558 grams per dnp...

  11. www.extension.ucdavis.edu/engineering Spring 2010

    E-Print Network [OSTI]

    Thomases, Becca

    and/or electricity, centralized digestion systems, co-digestion facilities and upgrading of biogas who specializes in anaerobic "oxygen-free" digestion, biogas energy utilization, energy conserva- tion as an agricultural producer, consultant, decision maker or system reviewer to use anaerobic digestion of animal

  12. Managing Manure with Biogas Recovery Systems

    E-Print Network [OSTI]

    Mukhtar, Saqib

    emissions and capture biogas--a useful source of energy. About Anaerobic Digestion Biogas recovery systems manure in an oxygen-free environment. One of the natural prod- ucts of anaerobic digestion is biogas Digestion Biogas recovery systems are a proven technology. Currently, more than 30 digester systems

  13. anaerobic ammonia oxidation: Topics by E-print Network

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

    and its derivatives, have demonstrated Angenent, Lars T. 89 Energy Savings from Floating Head Pressure in Ammonia Refrigeration Systems Texas A&M University - TxSpace Summary:...

  14. anaerobic syntrophic phthalate: Topics by E-print Network

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

    and Dissertations Summary: ??Phthalate plasticizers are added to polyvinyl chloride (PVC) during manufacturing to increase resilience and softness, ease the processing, and...

  15. anaerobic granular sludges: Topics by E-print Network

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

    12;Cloud storage The good Flexiblity, Elasticity Replication, Data Dissemination No CapEx The bad Latency, (Throughput) Long-term OpEx Consistency The ugly Security 5 A...

  16. anaerobic biosurfactant production: Topics by E-print Network

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

    deduplication and compression with the cloud to reduce the storage footprint as well as CapEx and OpEx costs Chaudhuri, Surajit 354 Product Information Transparent Engineering...

  17. anaerobic mesophilic granular: Topics by E-print Network

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

    12;Cloud storage The good Flexiblity, Elasticity Replication, Data Dissemination No CapEx The bad Latency, (Throughput) Long-term OpEx Consistency The ugly Security 5 A...

  18. anaerobic granular sludge: Topics by E-print Network

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

    12;Cloud storage The good Flexiblity, Elasticity Replication, Data Dissemination No CapEx The bad Latency, (Throughput) Long-term OpEx Consistency The ugly Security 5 A...

  19. anaerobic microorganisms involved: Topics by E-print Network

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

    De Lillo,1 show that fluid acceleration reorients gyrotactic plankton, triggering small-scale clustering. We that fluid acceleration generates multifractal plankton clustering,...

  20. anaerobically induced small: Topics by E-print Network

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

    as Neopentane Induce a Hydrophobic Physics Websites Summary: observed around large scale hydrophobic solutes. Smaller molecules fit into a water clathrate, whereasReply to the...

  1. activity supports anaerobic: Topics by E-print Network

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

    Summary: (in many cases at lower voltage). 6. RGR funds must give preference to small-scale renewable energy through the National Network of NGOs for Renewable Energy (RENOVE)....

  2. anaerobic upflow column: Topics by E-print Network

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

    we have detected, in high-quality observations from Hinode SOTNFI, ubiquitous small-scale upflows which move horizontally with supersonic velocities in the quiet Sun. We...

  3. Supplementary Information A Novel Anaerobic Electrochemical Membrane Bioreactor

    E-Print Network [OSTI]

    EMBR) with Conductive Hollow-fiber Membrane for Treatment of Low-organic Strength Solutions Krishna P. Katuria§ , Craig;S4 Figure S3. Photographs of nickel hollow-fiber membrane cathodes showing gas bubble formation Laboratories Inc., USA) as per the manufacturer's instructions, and quantified using a Nano

  4. anaerobic aggregates determined: Topics by E-print Network

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

    forest road aggregate 8 Determination of branch fraction and minimum dimension of mass-fractal aggregates G. Beaucage* Materials Science Websites Summary: . Branched aggregates...

  5. anaerobic bacteria experiments: Topics by E-print Network

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

    The most basic theoretical challenge for understanding low energy nuclear reaction (LENR) and transmutation reaction (LETR) in condensed matters is to find mechanisms by which...

  6. Evidence for Multiple Modes of Uranium Immobilization by an Anaerobic...

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

    were examined in the presence and absence of the electron-shuttling moiety, anthraquinone-2,6-disulfonate (AQDS). Cell suspensions were capable of nearly complete removal...

  7. anaerobic acid resistance: Topics by E-print Network

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

    25 Antibacterial Activities of Liposomal Linolenic Acids against Antibiotic-Resistant Helicobacter pylori Materials Science Websites Summary: , California 92093, United States...

  8. anaerobic spirochete isolated: Topics by E-print Network

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

    found for the extraction with the maximum recovery of 7.0 gL compared to Chloroform:MTBE (1:1)(6.1gL). The ability of strain B160 to grow and produce biosurfactant on...

  9. alkaliphilic anaerobe isolated: Topics by E-print Network

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

    found for the extraction with the maximum recovery of 7.0 gL compared to Chloroform:MTBE (1:1)(6.1gL). The ability of strain B160 to grow and produce biosurfactant on...

  10. anaerobic cometabolic conversion: Topics by E-print Network

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

    costs, well and formation plugging, etc. Cometabolic Hazen, Terry 3 Characterizing MTBE Cometabolism and Propane Metabolism by Mycobacterium austroafricanum JOB5. Open Access...

  11. anaerobic bacteria isolated: Topics by E-print Network

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

    found for the extraction with the maximum recovery of 7.0 gL compared to Chloroform:MTBE (1:1)(6.1gL). The ability of strain B160 to grow and produce biosurfactant on...

  12. anaerobic sewage sludge: Topics by E-print Network

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

    and staff available for flue gas scrubbing test with dry lime sludge. The Ames Power Plant provided fly ash for the construction of the test embankment. iii Disclaimer "The...

  13. anaerobic sediment microorganisms: Topics by E-print Network

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

    to develop a system which fulfill the requirements and at the same time is simple and cost-effective, a pilot-scale setup was designed and constructed at a wastewater treatment...

  14. anaerobic reductive precipitation: Topics by E-print Network

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

    found for the extraction with the maximum recovery of 7.0 gL compared to Chloroform:MTBE (1:1)(6.1gL). The ability of strain B160 to grow and produce biosurfactant on...

  15. anaerobic phenol metabolism: Topics by E-print Network

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

    Biosciences, Uni6ersity of the Ryukyus, Nishihara, Okinawa 903-0213, Japan Abstract Plant phenolic Cohen, Michael F. 49 Catalytic wet oxidation of phenolic wastes Texas A&M...

  16. anaerobic carbon degradation: Topics by E-print Network

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

    in the field of carbon sequestration science. This is mainly because the capture cost is expected to make up about 75 % of the total costs for geological or oceanic...

  17. anaerobic baffled reactor: Topics by E-print Network

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

    to develop a system which fulfill the requirements and at the same time is simple and cost-effective, a pilot-scale setup was designed and constructed at a wastewater treatment...

  18. anaerobic sludge blanket: Topics by E-print Network

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

    of each treatment process, according to the Egyptian conditions, is evaluated. The Life cycle assessment methodology was applied to assess and compare the environmental impacts...

  19. Rhodoferax ferrireducens sp. nov., a psychrotolerant, facultatively anaerobic bacterium

    E-Print Network [OSTI]

    Lovley, Derek

    included acetate, lactate, malate, propionate, pyruvate, succinate and benzoate. None of the compounds included Fe(III)­NTA (nitrilotriacetic acid), Mn(IV) oxide, nitrate, fumarate and oxygen. Phylogenetic, USA. Abbreviations: AQDS, anthraquinone-2,6-disulfonate; NTA, nitrilotri- acetic acid; PHA, poly-hydroxyalkanoate;

  20. anaerobic ethanol producer: Topics by E-print Network

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

    attractive to both male and female M. sutor beetles Hanks, Lawrence M. 4 Fuel-Cycle Fossil Energy Use and Greenhouse Gas Emissions of Fuel Ethanol Produced from U.S. Midwest...

  1. anaerobic ultramicrobacteria belonging: Topics by E-print Network

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

    Hugh's son. Silicon Carbide Specimen This specimen of silicon carbide, also known as carborundum or moissanite, was produced in an electric batch furnace at NC State College in the...

  2. anaerobic bacterial community: Topics by E-print Network

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

    and government. Forest Renewal BC funding- from stumpage fees and royalties that forest companies pay for the right to harvest timber on Crown lands- is reinvested in the forest,...

  3. anaerobic chlorophenol-degrading community: Topics by E-print...

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

    and government. Forest Renewal BC funding- from stumpage fees and royalties that forest companies pay for the right to harvest timber on Crown lands- is reinvested in the forest,...

  4. anaerobic benzene communities: Topics by E-print Network

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

    and government. Forest Renewal BC funding- from stumpage fees and royalties that forest companies pay for the right to harvest timber on Crown lands- is reinvested in the forest,...

  5. anaerobic work capacity: Topics by E-print Network

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

    aspect of working memory (WM) is the capacity to maintain goal-relevant information in mind, but little is known about how this capacity develops in the human brain. We compared...

  6. ORIGINAL ARTICLE Anaerobic Ammonium Oxidation (Anammox) in Chesapeake

    E-Print Network [OSTI]

    Ward, Bess

    -estuaries, the Choptank River and Patuxent River. Homogenized sediments were incubated with 14/15 N amendments of NHþ 4 in the tidal freshwater location in the Patuxent River. Anammox activity was also not detected in the seaward to tidal freshwater and mesohaline locations in the Choptank River, whereas anammox was not detected

  7. anaerobic microbial communities: Topics by E-print Network

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

    BST method using pyrosequencing technique led us to determine and estuaries causes eutrophication while human consumption of groundwater contaminated nitratenitrite can such as...

  8. Anaerobic filters: an energy plus for wastewater treatment

    SciTech Connect (OSTI)

    Not Available

    1981-01-01T23:59:59.000Z

    Separate abstracts are prepared for 12 papers presented at the seminar/workshop. One had previously appeared in the appropriate DOE data bases. (MCW)

  9. anaerobic biotechnological approaches: Topics by E-print Network

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

    Three Sets of Class Notes Prestwich, Ken 6 Biotechnology Letters Vol 12 No 3 235-240 (1990) Received 25th January Energy Storage, Conversion and Utilization Websites Summary:...

  10. anaerobic reactor systems: Topics by E-print Network

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

    Thermonuclear Experimental Reactor and the Nuclear Weapons Proliferation Implications of Thermonuclear-Fusion Energy Systems CiteSeer Summary: This paper contains two parts: (I) A...

  11. anaerobic hybrid reactor: Topics by E-print Network

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

    required for thermonuclear reactors R@frascati.enea.it Abstract. For the progress of the thermonuclear fusion energy research based on the tokamak concept in ITER (International...

  12. anaerobic microbial processes: Topics by E-print Network

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

    were monitored in fecal pellets at time Luther, Douglas S. 112 Effect of immersion chiller management and microbial intervention strategy on Salmonella or Campylobacter...

  13. anaerobic aquifer column: Topics by E-print Network

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

    a Kaibel distillation column with model predictive control (MPC). A Kaibel distillation column has several advantages compared Skogestad, Sigurd 198 Active constraint...

  14. anaerobic respiring bacteria: Topics by E-print Network

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

    of locomotion, feeding and respiration (Weiss, 1950; von Holst, 1973; Hildebrand, 1980 Wainwright, Peter C. 55 Automated soil respiration measurements: new information,...

  15. anaerobic microbial transformations: Topics by E-print Network

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

    that allows to specify binary relations on graphs Drewes, Frank 66 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...

  16. anaerobic energy release: Topics by E-print Network

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

    Altyntsev, A; Dudk, J; Kashapova, L 2014-01-01 7 Elementary Energy Release Events in Solar Flares CERN Preprints Summary: Most theoretical investigations of particle...

  17. anaerobic acidification broth: Topics by E-print Network

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

    by most commercial algae species. Accordingly, 18 000 and 5500 GJ year-1 ha-1 of heat energy must be removed to maintain broth temperature Fringer, Oliver B. 7 NOAA'S ROLE IN...

  18. anaerobic thermophiles progress: Topics by E-print Network

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

    provides an array of positive environmental benefits such as reducing greenhouse gas emissions, replacing mineral fertilizers, producing renewable energy and treating...

  19. anaerobic aquatic habitats: Topics by E-print Network

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

    habitat Hofmann, Hans A. 13 Aquatic Habitat Modifications in La Plata River Basin, Patagonia and Associated Marine Areas CiteSeer Summary: This paper describes the environmental...

  20. Community Renewable Energy Success Stories: Community-Scale Anaerobic...

    Office of Environmental Management (EM)

    stringent-or ambitious. I shouldn't say stringent. We are shooting for 100% renewable energy by 2022 and 100% Green City Fleet by 2022, so we are working on those initiatives...

  1. anaerobic benzene degradation: Topics by E-print Network

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

    Hb, hemoglobin; MS, mass spectrometry; PBPK, physiologically based pharmacokinetic; SPC, S-phenylcysteine. Andrew B. Lindstrom; Suramya Waidyanatha; Rogelio Tonero-velez;...

  2. anaerobic fixed bed: Topics by E-print Network

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

    and liquid Paris-Sud XI, Universit de 5 Fixed Bed Countercurrent Low Temperature Gasification of Dairy Biomass and Coal-Dairy Biomass Blends Using Air-Steam as Oxidizer...

  3. anaerobic simulated bioreactor: Topics by E-print Network

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

    of a Gasifier and a Bioreactor. Open Access Theses and Dissertations Summary: ??The Gasification-Fermentation process for the production of fuel-grade ethanol from...

  4. anaerobic fluidized bed: Topics by E-print Network

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

    program considerably facilitated its operation which can now be remotely done. The gasification of sorghum, CGT and manure showed that they contained high amounts of...

  5. anaerobic hydrogen producing: Topics by E-print Network

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

    (No Carbon Capture) Electrolysis Water (Grid) Coal Gasification (Carbon Capture) Biomass Gasification Water Electrolysis (Wind) High-Temp Water 73 1 Production of Biosurfactant by...

  6. anaerobic sludge bed: Topics by E-print Network

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

    bed gasifier operation. Open Access Theses and Dissertations Summary: ??A fluidized bed gasification (FBG) pilot plant was designed and constructed at the University of...

  7. anaerobic galactose fermentation: Topics by E-print Network

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

    Tyrim? tikslas nustatyti ir ?vertinti (more) Muraka,; Irmantas 2011-01-01 387 Bad wine makes for good energy Waste from improper fermentation can transform into...

  8. anaerobic glucose fermentation: Topics by E-print Network

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

    it has been proposed that IGT may cause neuropathy (5). However, unknown authors 313 Bad wine makes for good energy Waste from improper fermentation can transform into...

  9. anaerobic alcoholic fermentation: Topics by E-print Network

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

    options. Develop new fuel sources with lower net greenhouse gas emissions 174 Bad wine makes for good energy Waste from improper fermentation can transform into...

  10. anaerobic xylose fermentation: Topics by E-print Network

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

    Tyrim? tikslas nustatyti ir ?vertinti (more) Muraka,; Irmantas 2011-01-01 387 Bad wine makes for good energy Waste from improper fermentation can transform into...

  11. NSERC-Laflche Industrial Research Chair Advanced Anaerobic Treatment

    E-Print Network [OSTI]

    Petriu, Emil M.

    (d) CumulativeBiogasProduction(mL) Control MW-50C MW-75C MW-96C MW-120C MW-150C MW-175C 31 microbial decomposition and increase produced biogas. Bioreactor Landfill Temperature Flow, Temperature, COD, pH, ORP Pore Water Pressure Flow, Composition Weather Conditions Biogas Moisture Content Leachate

  12. ANAEROBIC BIOLOGICAL TREATMENT OF IN-SITU RETORT WATER

    E-Print Network [OSTI]

    Ossio, Edmundo

    2012-01-01T23:59:59.000Z

    Phyllis Fox INTRODUCTION Oil shale retorting produces fromWaste Water from Oil Shale Processing" ACS Division of FuelEvaluates Treatments for Oil-Shale Retort Water," Industrial

  13. anaerobic 1-alkene metabolism: Topics by E-print Network

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

    METABOLISM IN A LIZARD (ANOLIS BONAIRENSIS) UNDER NATURAL CONDITIONS1 ALBERT F. BENNETT, California 92717 (Accepted 101380) Lactate contents of Anolis bonairensis (Sauria:...

  14. anaerobic carbon metabolism: Topics by E-print Network

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

    METABOLISM IN A LIZARD (ANOLIS BONAIRENSIS) UNDER NATURAL CONDITIONS1 ALBERT F. BENNETT, California 92717 (Accepted 101380) Lactate contents of Anolis bonairensis (Sauria:...

  15. anaerobic laboratory conditions: Topics by E-print Network

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

    METABOLISM IN A LIZARD (ANOLIS BONAIRENSIS) UNDER NATURAL CONDITIONS1 ALBERT F. BENNETT, California 92717 (Accepted 101380) Lactate contents of Anolis bonairensis (Sauria:...

  16. anaerobic conditions improve: Topics by E-print Network

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

    METABOLISM IN A LIZARD (ANOLIS BONAIRENSIS) UNDER NATURAL CONDITIONS1 ALBERT F. BENNETT, California 92717 (Accepted 101380) Lactate contents of Anolis bonairensis (Sauria:...

  17. anaerobic central metabolic: Topics by E-print Network

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

    METABOLISM IN A LIZARD (ANOLIS BONAIRENSIS) UNDER NATURAL CONDITIONS1 ALBERT F. BENNETT, California 92717 (Accepted 101380) Lactate contents of Anolis bonairensis (Sauria:...

  18. anaerobic aquatic environments: Topics by E-print Network

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

    Ecology Websites Summary: AQUATIC BIOLOGY Aquat Biol Vol. 13: 79-88, 2011 doi: 10.3354ab00353 Published online July 21 INTRODUCTION Killer whales Orcinus orca are top...

  19. anaerobic dark culture: Topics by E-print Network

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

    in children are Itzhak Brook; M. Sc 1983-01-01 12 Dark Group: Dark Energy and Dark Matter Astrophysics (arXiv) Summary: We study the possibility that a dark group, a gauge...

  20. anaerobic sewer biofilms: Topics by E-print Network

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

    Matter in the Sewers of Chicago Presenter: Juan Collar Time & Date: 7 for Cosmic Dark Matter in the Sewers of Chicago Presenter: Juan Collar Time & Date: 7-9 PM Monday September...

  1. anaerobic wastewater treatment: Topics by E-print Network

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

    Theses and Dissertations Summary: ??The global concerns of climate change and energy crisis have provoked research efforts to develop energy-efficient alternatives to...

  2. anaerobic reactor star: Topics by E-print Network

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

    1 Introduction About the Next Three Sets of Class Notes Prestwich, Ken 6 Stars as thermonuclear reactors: their fuels and ashes Nuclear Theory (arXiv) Summary: Atomic nuclei are...

  3. anaerobic environments assessing: Topics by E-print Network

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

    CiteSeer Summary: The Inscape Environment is an integrated software development enviroment for building large software systems by large groups of developers. It provides...

  4. anaerobic reductive dechlorination: Topics by E-print Network

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

    Sets of Class Notes Prestwich, Ken 16 Dechlorination ability of municipal waste incineration fly ash for polychlorinated phenols Chemistry Websites Summary: Dechlorination...

  5. anaerobic dechlorination processes: Topics by E-print Network

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

    (more) Assaf-Anid, Nada 1993-01-01 16 Dechlorination ability of municipal waste incineration fly ash for polychlorinated phenols Chemistry Websites Summary: Dechlorination...

  6. anaerobic immobilized biomass: Topics by E-print Network

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

    showed that native Solanum elaeagnifolium was able to bind the following amounts of metals in mg metalg biomass: 20.6 mg Pb(II)g, 13.1 mg Cu(II)g, 6.5 mg Ni(II) g, 18.9...

  7. anaerobic membrane bioreactors: Topics by E-print Network

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

    about the toxic and carcinogenic effects of this metal requires very tight eff luent controls. This study was an investigation of the effectiveness of the process in...

  8. anaerobic membrane bioreactor: Topics by E-print Network

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

    about the toxic and carcinogenic effects of this metal requires very tight eff luent controls. This study was an investigation of the effectiveness of the process in...

  9. anaerobic soil slurry: Topics by E-print Network

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

    at planting time in 2009. Aboveground biomass production, coarse and fine roots, SOC Norton, Jay B. 258 Climatic influences on hillslope soil transport efficiency MIT - DSpace...

  10. ANAEROBIC BIOLOGICAL TREATMENT OF IN-SITU RETORT WATER

    E-Print Network [OSTI]

    Ossio, Edmundo

    2012-01-01T23:59:59.000Z

    Wastewater Genera ted in Shale Oil Development 9 BattelleControl Technology for Shale Oil Wastewaters 9 11 inPhyllis Fox INTRODUCTION Oil shale retorting produces from

  11. anaerobic aqueous solutions: Topics by E-print Network

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

    and alternating current polarography of nitrobenzene in aqueous solutions and in acetonitrile. Open Access Theses and Dissertations Summary: ??The polarographic reduction of...

  12. anaerobic toluene mineralization: Topics by E-print Network

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

    and found in nature as the mineral tincal. Boric acid, also known as orthoboric acid boric acid. The most common minerals of commercial importance in the United States were...

  13. anaerobic methane oxidizers: Topics by E-print Network

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

    both as an energy resource and as an atmospheric contaminant contributing to the greenhouse effect Gosciences, 1A rue de la Frolerie, 45071 Orlans Cedex 2, France...

  14. anaerobic methane oxidation: Topics by E-print Network

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

    both as an energy resource and as an atmospheric contaminant contributing to the greenhouse effect Gosciences, 1A rue de la Frolerie, 45071 Orlans Cedex 2, France...

  15. anaerobic green sulfur: Topics by E-print Network

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

    Websites Summary: Carbon Flow of Heliobacteria Is Related More to Clostridia than to the Green Sulfur Bacteria, Chemistry, and Energy, Environment, and Chemical...

  16. anaerobic phototrophic bacteria: Topics by E-print Network

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

    bacteria convert organic matter into methane and carbon dioxide (a mixture called biogas) in the absence of air. It is a widely used biological process for treating wastewater...

  17. anaerobic thermophilic biogas: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  18. anaerobic chelate bioegradation: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  19. anaerobic dechlorinating bacteria: Topics by E-print Network

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

    and tested in pilot scale for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment...

  20. anaerobic bacterium anaerocellum: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  1. anaerobic thermophilic bacteria: Topics by E-print Network

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

    and tested in pilot scale for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment...

  2. anaerobic microbial consortium: Topics by E-print Network

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

    includes Volatile fatty acid content, reduction in Chemical oxygen demand, average biogas production, methane content of the bio-fuel, variation in pH, influence of temperature...

  3. anaerobic biogas reactors: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  4. anaerobic methanotrophic archaea: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  5. anaerobe clostridium acetobutylicum: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  6. anaerobic arsenite oxidation: Topics by E-print Network

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

    Page Last Page Topic Index 1 COUPLING OF BIOTIC AND ABIOTIC ARSENITE OXIDATION IN SOIL Environmental Management and Restoration Websites Summary: COUPLING OF BIOTIC AND ABIOTIC...

  7. anaerobic ethanol oxidation: Topics by E-print Network

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

    production from organic waste by wet oxidation pre-oxidation treatment of organic household waste enriched withwaste feedstock (from 25 to 36%) was unknown impurities, such as...

  8. anaerobic bioreactor landfills: Topics by E-print Network

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

    energy recovery; sustainability; management Management of Municipal Solid Wastes (household garbage and rubbish, street sweepings, construction unknown authors 10 Mathematical...

  9. alkaline anaerobic respiration: Topics by E-print Network

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

    alkaline fusion process is used from waste phosphors. 1. Introduction The recycling of rare earths is of importance for helping for recycling Eu from BaMgAl10O17:Eu2+ (BMA)...

  10. Floodplain Assessment for Installation of a Renewable Energy Anaerobic

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2: FinalOffers3.pdf0-45.pdf Flash2010-45.pdfFlash2011-43and Statement of Findings

  11. Ecovation Inc formerly AnAerobics | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazel Crest, Illinois: EnergyEastport,de Nantes JumpEcosystem Japan

  12. Anaerobic MBR: Challenges and Opportunities | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1Albuquerque, NMPerformance |Should Know

  13. The Anaerobic Fluidized Bed Membrane Bioreactor for Energy-Efficient

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic| DepartmentDepartment ofTankTest(EAP) Bulletin,(EAP)

  14. DATA DIGEST WEST LAFAYETTE

    E-Print Network [OSTI]

    Petriu, Emil M.

    DATA DIGEST 2009-2010 WEST LAFAYETTE PreparingTomorrow'sLeaders for a Changing World #12-mail: datadigest@purdue.edu URL: www.purdue.edu/DataDigest DATA DIGEST2009-2010 WEST LAFAYETTE #12;DATA DIGEST2009-2010 This tenth edition of the Purdue University Data Digest provides information on a variety of topics

  15. Optimization Online - Digest

    E-Print Network [OSTI]

    Complete the form below to subscribe to the free Optimization Online Digest. ... Type your e-mail address to unsubscribe from the Optimization Online Digest.

  16. Sludge digester

    SciTech Connect (OSTI)

    Wight, J.L.; Cook, L.W.

    1993-08-24T23:59:59.000Z

    A ballasted, gas-holding, liquid sludge digester is described comprising: a main liquid sludge tank having a bottom wall and upwardly projecting sidewall; a cover having a top and depending side skirt structure which telescopes with respect to the upwardly projecting sidewall of the main tank; ballast supported near the lower edge of said side skirt; a ballast-engaging, liquid-containing well joined to said sidewall of said main tank such that said cover provides a gas-tight seal when said ballast interacts with liquid in said well so as to be partially emerged or fully submerged in the liquid; liquid fill means interacting with said well to maintain a predetermined liquid level in the well when said ballast is at least partially emerged from the liquid in said well; and overflow means interacting with said well to maintain a predetermined liquid level in the well when said ballast is submerged in the liquid in the well.

  17. Nitrogen Availability from Manipulated Manures

    E-Print Network [OSTI]

    Balser, Teri C.

    digestion Converts manure into simple organic compounds and biogas products Microbes (bacteria) do the work or chemical nature of the manure. Liquid-solid separation Anaerobic digestion Composting #12;Common Liquid.90 0.30 0.24 6.67 3.76 * On farms C and D separation was performed on digested manure #12;Anaerobic

  18. Cooperative Approaches for Implementation of

    E-Print Network [OSTI]

    Laughlin, Robert B.

    ;#12;Abstract Anaerobic digestion of dairy manure produces biogas that can be captured and used for fuel while returns from energy and byproduct sales. Keywords: Anaerobic digestion, biogas, cooperatives, carbonCooperative Approaches for Implementation of Dairy Manure Digesters Research Report 217 #12

  19. Available at www.sciencedirect.com journal homepage: www.elsevier.com/locate/watres

    E-Print Network [OSTI]

    are biogas and stabilized biomass. When the digested biomass is dewatered using a centrifuge, a biosolids for concentration of anaerobic digester centrate Ryan W. Hollowaya , Amy E. Childressb , Keith E. Dennettb , Tzahi Y Wastewater treatment Biosolids Anaerobic digestion Centrate a b s t r a c t The nutrient-rich liquid stream

  20. Opportunities for CHP at Wastewater Treatment Facilities: Market...

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

    2008 EPA CHP Partnership Update Biomass Program Perspectives on Anaerobic Digestion and Fuel Cell Integration at Biorefineries Biogas Technologies and Integration with Fuel Cells...

  1. Investigation of the Effect of In-Situ Catalyst on the Steam Hydrogasification of Biomass

    E-Print Network [OSTI]

    FAN, XIN

    2012-01-01T23:59:59.000Z

    derived from biomass, including biogas, biodiesel, ethanol,in the absence of oxygen environment to produce biogas.The biogas generated from anaerobic digestion of biosolids

  2. Pathway to Fuel Cell Deployment--The 3rd Party Transaction: A...

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

    CA renewablehydrogenworkshopnov16damberger.pdf More Documents & Publications Biogas Markets and Federal Policy Biomass Program Perspectives on Anaerobic Digestion and...

  3. Biocorrosive Thermophilic Microbial Communities in Alaskan North Slope Oil Facilities

    E-Print Network [OSTI]

    Duncan, Kathleen E.

    2010-01-01T23:59:59.000Z

    Methanogenic sludge High temperature Dagang oil field (Ekofisk oil field Mesophilic digested sludge Kamchatka hotoil field (DQ647105) FJ469331 Uncultured bacterium Bacteroidetes Anaerobic sludge

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    The Alliant Energy Renewable Cash-Back Rewards program offers rebates for solar photovoltaics (PV), wind, renewable biomass, and anaerobic digesters. Businesses and farms that...

  5. CX-000161: Categorical Exclusion Determination | Department of...

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

    Energy, Golden Field Office Energy Efficiency and Conservation Block Grant for: Light-emitting Diode Street Lights, Anaerobic Food Waste Digester - Pilot Study, Business Energy...

  6. Conversion Technology and the San Jose Zero Waste Initiative...

    Office of Environmental Management (EM)

    Documents & Publications Biomass Program Perspectives on Anaerobic Digestion and Fuel Cell Integration at Biorefineries Biogas Production Technologies Pathways for Algal Biofuels...

  7. ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANTS NEPA COMPLIANCE...

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

    is limited to conducting the waste stream study, feasibility study and preliminary engineering for an Anaerobic Food Waste Digester facility only. *Recipient needs to...

  8. EA-1832: Final Environmental Assessment | Department of Energy

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

    Final Environmental Assessment EA-1832: Final Environmental Assessment Rainier Biogas LLC Community Anaerobic Manure Digester, Enumclaw, Washington This project is located...

  9. NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form

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

    2010-2012 Franklin County, PA PA Green Energy Works Targeted Grant - Native Energy Biogas Project Install small anaerobic digester (less than 75' x 75'), solids separator, gas...

  10. Data:E92b34eb-2a10-4332-ba59-2a334603409d | Open Energy Information

    Open Energy Info (EERE)

    power where the customer generates energy from biogas produced by anaerobic digestion of agricultural waste. Customers taking service under this rate schedule shall be allowed to...

  11. California Policy Stimulates Carbon Negative CNG for Heavy Duty...

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

    with biomethane generated from anaerobic digestion of organic waste it collects p-10edgar.pdf More Documents & Publications Advanced Natural Gas Engine Technology for Heavy...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    that generates electricity using solar, wind or hydro resources, anaerobic digesters, or fuel cells capable of being powered by renewable... Eligibility: Agricultural, Commercial,...

  13. DOE Supports Renewable Energy Deployment Projects for Forest...

    Energy Savers [EERE]

    Potawatomi Community July 21, 2014 - 12:03pm Addthis Anaerobic digesters reduce pollution and generate electricity in Milwaukee. | Image from Forest County Potawatomi...

  14. Energy Blog | Department of Energy

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

    biogas created from bacteria's anaerobic digestion of cow manure. December 16, 2011 Higgs Boson May Be Within Sight Physicists from the European Organization for Nuclear...

  15. GMP- Biomass Electricity Production Incentive

    Broader source: Energy.gov [DOE]

    Green Mountain Power Corporation (GMP), Vermont's largest electric utility, offers a production incentive to farmers who own systems utilizing anaerobic digestion of agricultural products,...

  16. California: Microturbine Protects Environment, Creates Jobs ...

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

    including natural gas, landfill gas, biogas generated from anaerobic digesters, and syngas. While many commercial, industrial, and government facilities are well suited for...

  17. SEP Success Story: A Not-So-Cheesy Approach to Clean Energy Manufactur...

    Energy Savers [EERE]

    5:17pm Addthis Betin Incorporated's generator converts gas from the plant's anaerobic digester into electricity. | Courtesy of Montchevr. Betin Incorporated's generator...

  18. CX-004655: Categorical Exclusion Determination | Department of...

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

    in State Energy Program funding to Avatar Energy, LLC to install an anaerobic digester and a 75 kilowatt combined heat and power generation unit at Desert Hills, an...

  19. CX-003599: Categorical Exclusion Determination | Department of...

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

    a portion of the costs associated with the installation of an anaerobic manure digester; the construction of a building to house two generators, a separator, and a bottling...

  20. Alliant Energy Interstate Power and Light- Business and Farm Renewable Energy Rebates

    Broader source: Energy.gov [DOE]

    The Alliant Energy Renewable Cash-Back Rewards program offers rebates for solar photovoltaics (PV), wind, renewable biomass, and anaerobic digesters. Businesses and farms that are Alliant Energy...

  1. Novel Sorbent to Clean Biogas for Fuel Cell Combined Heat and Power- Fact Sheet, 2011

    Broader source: Energy.gov [DOE]

    Factsheet describing project objective to develop a new, high-capacity, expendable sorbent to remove sulfur species from anaerobic digester gas

  2. Sur le modle AM2 de digestion anarobie Boumedine Benyahia abc* --Tewfik Sari cd --Brahim Cherki a --Jrme

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    : Biotechnology, equilibrium, stability analysis, wastewater epuration, biogas production Volume 1 ­ 2010, pages 1 System for anaerobic processes, European FAIR project No. ERB-FAIR-CT96-1198). Il s'agit d'un modèle en

  3. Integrating BES in the wastewater and sludge

    E-Print Network [OSTI]

    Angenent, Lars T.

    , denitrification, and anaerobic digester treatment systems, while chemical methods include phosphate removal, dye of WAS, including treatment of influent or the accumulated sludge with anaerobic digesters (Rulkens 2008; Seghezzo et al. 1998). This is a more sustainable treatment method because methane in biogas can partly

  4. Microbiological aspects of methane production during pig manure storage DABERT Patrick, VEDRENNE Fabien, BRARD Camille and BELINE Fabrice

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to analyse the microbiological aspects of manure anaerobic digestion. In this work the bacterial and archaeal of methanogenic anaerobic digester sludge. Storage of the slurries was simulated in 250-1000 mL glass bottles during 120-150 days at 30°C. During the simulated storage, biogas production was monitored by pressure

  5. Analysis of Integrated Tropical Biorefineries

    E-Print Network [OSTI]

    the integration of an anaerobic digester into each biochemical platform technology. The combustion of biogas not rely on biogas combustion to be thermally self- sufficient. However, their output of excess electricity is enhanced by integrating anaerobic digestion into the conversion process. Consequently, all investigated

  6. Provided for non-commercial research and educational use only. Not for reproduction or distribution or commercial use.

    E-Print Network [OSTI]

    Kusiak, Andrew

    ; Lettinga ). As a result of anaerobic digestion, methane and carbon dioxide rich biogas are produced networks, particle swarm optimization, wastewater treatment plant INTRODUCTION Anaerobic digestion. The biogas can then be used to generate electri- city or heat. Biological, chemical, and physical reactions

  7. Tri-Generation Success World's First Tri-Gen

    E-Print Network [OSTI]

    station uses anaerobically digested biogas from the municipal wastewater treatment plant as the fuel SAE protocols for rapid 3-minute complete tank refueling. Gas or Biogas H2 is produced at anode Gas Electrolyte Cathode Anode Anaerobic digester gas fuel is cleaned and then sent to a molten carbonate fuel cell

  8. Digestive System general organization throughout

    E-Print Network [OSTI]

    Houde, Peter

    Digestive System general organization throughout: mucosa, submucosa, muscularis externa, serosa digestive glands salivary pancreas liver (lobes: right, left, caudate, quadrate, diaphragmatic surface, bare

  9. Autoheated thermophilic aerobic digestion

    SciTech Connect (OSTI)

    Deeny, K. (Junkins Engineering, Morgantown, PA (United States)); Hahn, H.; Leonhard, D. (Univ. Karlsruhe (West Germany)); Heidman, J. (Environmental Protection Agency, Cincinnati, OH (United States))

    1991-10-01T23:59:59.000Z

    Autothermal thermophilic aerobic digestion (ATAD) is first and foremost a digestion process, the primary purpose of which is to decompose a portion of the waste organic solids generated from wastewater treatment. As a result of the high operating temperature, digestion is expected to occur within a short time period (6 days) and accomplish a high degree of pathogen reduction. ATAD systems are two-stage aerobic digestion processes that operate under thermophilic temperature conditions (40 to 80C) without supplemental heat. Like composting, the systems rely on the conservation of heat released during digestion itself to attain and sustain the desired operating temperature. Typical ATAD systems operate at 55C and may reach temperatures of 60 to 65C in the second-stage reactor. Perhaps because of the high operating temperature, this process has been referred to as Liquid Composting.' Major advantages associated with thermophilic operation include high biological reaction rates and a substantial degree of pathogen reduction.

  10. Nutrition, digestive system and digestion specificity in phytophagous bats

    E-Print Network [OSTI]

    Boyer, Edmond

    Nutrition, digestive system and digestion specificity in phytophagous bats NF Zhukova Schmalhausen arisen as to how the feeding and digestion specificity is revealed in phytophagous bats, and how the entire order specificity affects these processes. To tackle these issues, the digestive system

  11. DRAFT 7/11/12 2012 State Fair 4-H Energy Robotics Challenge

    E-Print Network [OSTI]

    Keinan, Alon

    and gaseous biogas products. The biogas can be used to power generators, making methane digesters especially/11/12 2 6. METHANE DIGESTION BACKGROUND: Methane digestion systems, commonly referred to as "anaerobic digesters," promote the decomposition of manure, "digesting" the organics in the manure to simple organics

  12. Steam Digest 2001

    SciTech Connect (OSTI)

    Not Available

    2002-01-01T23:59:59.000Z

    Steam Digest 2001 chronicles BestPractices Program's contributions to the industrial trade press for 2001, and presents articles that cover technical, financial and managerial aspects of steam optimization.

  13. Development of rapid methods for estimating the fertilizing ability (nitrogen and potassium) of pig slurry and its changes during storage

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . The digester output expressed as ml biogas/M3 tank/day ranged from 0.4 to 1.3 m"11' m3. d over a period of 9 should lead to a better use of pig slurry in agriculture. Swine waste anaerobic digesters : technical More than 120 animal waste anaerobic digesters exist in France. They were built bet- ween 1979 and 1983

  14. Optimization Online Digest -- January 2011

    E-Print Network [OSTI]

    Optimization Online Digest — January 2011. Applications — OR and ... Anders Skajaa, John Bagterp Jørgensen, Per Christian Hansen Double Smoothing ...

  15. Optimization Online Digest -- July 2003

    E-Print Network [OSTI]

    Optimization Online Digest — July 2003. Applications — OR and Management Sciences Shunting Minimal Rail Car Allocation Marco E. Luebbecke, Uwe T.

  16. PalladianDigest Transportation

    E-Print Network [OSTI]

    Farritor, Shane

    PalladianDigest CONNECT. EMPOWER. GROW. Tackling Transportation Challenges Nebraska has been a vital link in the nation's transportation system since the days when carts, wagons to University of Nebraska­Lincoln research. That's fine with UNL transportation researchers, said Larry Rilett

  17. ORIGINAL ARTICLE The structure of the bacterial and archaeal community in a

    E-Print Network [OSTI]

    Lovley, Derek

    ORIGINAL ARTICLE The structure of the bacterial and archaeal community in a biogas digester biogas digesters at different scales and for different applications for treating rural wastes is well 16S rDNA, anaerobic digestion, biogas digester, denaturing gradient gel electrophoresis (DGGE

  18. Gills Onions Advanced Energy

    E-Print Network [OSTI]

    !!! One-third incoming onions discarded as tail, top, and peel! #12;The Solution... Advanced Energy honor from the American CouncilThe highest honor from the American Council of Engineering Companies Residential & Food Service Anaerobic Digestion Fats, Oil, and Grease (FOG) from Food Service Anaerobic Methane

  19. Report to the New Jersey State Board of Agriculture November 2012

    E-Print Network [OSTI]

    Goodman, Robert M.

    Specialist Michael Westendorf, NRCS, and Spectrum BioEnergy, a consortium offering eco- friendly solutions to organic waste and which provided the small anaerobic digester. This project places the first anaerobic that can sustain operate under reasonable regulatory conditions. Improving Soil Fertility and Disease

  20. Biotechnology Letters Vol 12 No 3 235-240 (1990) Received 25th January

    E-Print Network [OSTI]

    California at Riverside, University of

    1990-01-01T23:59:59.000Z

    solids levels through gradual adaptation. The maximum sludge solids level for stable anaerobic VS (volatile solids) feed/L sludge'd, at 32% solids within the reactor, were possible. UnderM, and a biogas composition of 55%-60% methane. INTRODUCTION Economic evaluations of anaerobic digestion

  1. Partial Restriction Digests Leslie Vosshall

    E-Print Network [OSTI]

    Partial Restriction Digests 4/18/2001 Leslie Vosshall · Purpose: To generate DNA cut at a subset to the following schedule for digests [A] ­ [F]: [A] 1.0 ul Enzyme [B] 0.1 ul Enzyme [C] 0.05 ul Enzyme [D] 0.01 ul Enzyme [E] 0.005 ul Enzyme [F] 0.001 ul Enzyme [A] add 1 ul of enzyme and mix well; place digest on wet

  2. Digestive efficiency and dry-matter digestibility in Steller sea lions fed herring, pollock, squid, and

    E-Print Network [OSTI]

    Digestive efficiency and dry-matter digestibility in Steller sea lions fed herring, pollock, squid, and salmon D.A.S. Rosen and A.W. Trites Abstract: Dry-matter digestibility and energy digestive efficiency-matter digestibility (DMD) and digestive efficiency (DE) were measured using the energy and manganese concentration

  3. Life cycle analysis of waste management options for EBI in Quebec

    E-Print Network [OSTI]

    Wilson, Jaclyn D

    2014-01-01T23:59:59.000Z

    Quebec has issued a mandate requiring all waste management facilities to ban the landfilling of organic waste by 2020. EBI is considering Anaerobic Digestion as one of its alternative options, but is uncertain if it is the ...

  4. Organic waste management for EBI in Quebec, feedstock analysis

    E-Print Network [OSTI]

    Sylvestre, Olivier, M. Eng. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    EBI is a company located in the province of Quebec in Canada with the mission to integrate waste management. Great challenges in regards to organic waste management are faced and anaerobic digestion is considered by EBI ...

  5. U.S. DEPARTIvIENT OF ENERGY EERE PROJECT MAN AG EM EN T CENTER

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

    project will use 7.5 million gallonsyear of cow and swine manure as feedstock. Biogas generated from the anaerobic digester would be routed to the combined heat and power...

  6. I"MC·EFl.

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

    project will use 7.5 million gallonsyear of cow and swine manure as feedstock. Biogas generated from the anaerobic digester would be routed to the combined heat and power...

  7. Biotechnology for environmental control and waste treatment

    SciTech Connect (OSTI)

    Donaldson, T.L.; Harris, M.T.; Lee, D.D.; Walker, J.F.; Strandberg, G.W.

    1985-01-01T23:59:59.000Z

    A slide show is reproduced here to review the technology of anaerobic digestion as a process for cleaning waste waters from municipal and industry wastes. Radioactive wastes are addressed also. (PSB)

  8. Course Logistics Instructors

    E-Print Network [OSTI]

    Vallino, Joseph J.

    Digested Similar systems found in termites Greenhouse gases #12;Diversity of Anaerobic Methanogenic "Distributed Metabolic Network" Biogas: CH4 + CO2 #12;Chemical Potential Exploitation Schulz et al. 1999

  9. HAPPENING THIS WEEK SOLAR ELECTRIC CELEBRATION

    E-Print Network [OSTI]

    Lawrence, Rick L.

    ROw- INg ANAEROBIC dIgESTION INduSTRy, whICh TRANSfORmS wASTE INTO BIOgAS ThAT CAN BE BuRNEd AS A fuEL. Ag

  10. United Nations Development Programme

    E-Print Network [OSTI]

    Technologies To Convert Biomass Into Modern Energy Chapter 5 5.1. Gasification 5.2. Anaerobic Digestion 5 Chapter 7 7.1. Biogas-Based Electricity and Water Supply in Indian Villages 7.2. Sustainable

  11. Biological sweetening of energy gases mimics in biotrickling filters Marc Fortuny a,c

    E-Print Network [OSTI]

    in energy-rich gases such as biogas from anaerobic digesters which may contain H2S concentrations exceeding: Hydrogen sulfide; Gas sweetening; Biotrickling filter; Desulfurization; Fuel gas; Biogas 1. Introduction

  12. Efficient salt removal in a continuously operated upflow microbial desalination cell with an air cathode

    E-Print Network [OSTI]

    , bioenergy can be produced by means of anaerobic digestion (biogas) or microbial fuel cell ­ MFC (bio than electricity production from biogas conversion (Rozendal et al., 2008). MFCs are bio

  13. Novel Sorbent to Clean Biogas for Fuel Cell Combined Heat and...

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

    Energy, will develop a new, high-capacity sorbent to remove sulfur from anaerobic digester gas. This technology will enable the production of a nearly sulfur-free biogas to...

  14. 1. To develop and transform abundant and renewable bioresources through

    E-Print Network [OSTI]

    · Anaerobic digestion · Pretreatment · Ethanol fermentationBiomass Biogas Lignin Chemicals ...to support (glucose) Fermentation (xylose) Biogas production SOLID FUEL Enzymes METHANE ETHANOL HYDROGEN Biomass Pretreatment Fermentation (glucose) Fermentation (xylose) Biogas production SOLID FUEL Enzymes METHANE ETHANOL

  15. CX-002326: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Community Renewable Energy Deployment - Sacramento Municipal Utility District (SMUD): BLT Anaerobic Digester Date: 05/18/2010Location(s): Sacramento, CaliforniaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  16. CX-008211: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Cedar Grove Composting High Solids Anaerobic Digestion Permitting CX(s) Applied: A9, B3.1 Date: 03/23/2012 Location(s): Washington Offices(s): Golden Field Office

  17. CX-005171: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Van Dyk Dairy Anaerobic DigesterCX(s) Applied: A9, B3.8, B5.1Date: 02/02/2011Location(s): Lynden, WashingtonOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  18. Final Report: Feasibility Study of Biomass in Snohomish County, Washington

    SciTech Connect (OSTI)

    Daryl Williams (Tulalip Tribes); Ray Clark (Clark Group)

    2005-01-31T23:59:59.000Z

    This report and its attachments summarizes the results of a unique tribal-farmer cooperative study to evaluate the feasibility of building one or more regional anaerobic digestion systems in Snohomish County, Washington.

  19. Renewable Energy Sales and Use Tax Exemption

    Broader source: Energy.gov [DOE]

    The sales of equipment used to generate electricity using fuel cells, wind, sun, biomass energy, tidal or wave energy, geothermal, anaerobic digestion or landfill gas is eligible for a 75% exempt...

  20. The Effect of Graded Levels of Dietary Starch on Cecal Environment in Horses 

    E-Print Network [OSTI]

    Wilson, Kristen L.

    2010-07-14T23:59:59.000Z

    H. Samples were used to count total anaerobic bacteria and lactic acid bacteria, as well as determine methane activity, ammonia activity, volatile fatty acids, and in vitro dry matter digestibility (IVDMD). Stoichiometric calculations were performed to give...

  1. CX-003598: Categorical Exclusion Determination | Department of...

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

    1,200,000 in Recovery Act funds to Avatar Energy, LLC to install an anaerobic digester and a 65 kilowatt combined heat and power generation unit at the existing, Frade...

  2. OSU Potential Bioenergy Mentors Version 2, 11/13/13

    E-Print Network [OSTI]

    Tullos, Desiree

    electrochemical technologies for bioenergy generation and waste/wastewater treatment. More of methane from wastewater treatment plant anaerobic digesters through the co interests are a good match for their projects. Biological Conversion

  3. Trichloroethene Removal From Waste Gases in Anaerobic Biotrickling Filters Through Reductive Dechlorination

    E-Print Network [OSTI]

    Popat, Sudeep Chandrakant

    2010-01-01T23:59:59.000Z

    trickled through the bed (one-pass) at a fixed velocity ofTCE EC of 16.3 g m bed-3 h -1 in a fixed-film biofilterbed (one-pass) at different liquid velocities (0.09-0.59 m h -1 ). A fixed

  4. Location and chemical composition of microbially induced phosphorus precipitates in anaerobic and aerobic granular sludge

    E-Print Network [OSTI]

    Boyer, Edmond

    and aerobic granular sludge A. Mañasa,b,c,e , M. Spérandioa,b,c , F. Deckerd and B. Biscanse aINSA, UPS, INP X-ray analysis (SEM-EDX) applied to granular sludge used for biological treatment of high sludge blanket (UASB) reactors and two aerobic granular sequenced batch reactors (GSBR) were evaluated

  5. Evidence for Multiple Modes of Uranium Immobilization by an Anaerobic Bacterium

    SciTech Connect (OSTI)

    Ray, Allison; Bargar, John R.; Sivaswamy, Vaideeswaran; Dohnalkova, Alice; Fujita, Yoshiko; Peyton, Brent M.; Magnuson, Timothy S.

    2011-05-15T23:59:59.000Z

    Microbial reduction of hexavalent uranium has been studied widely for its potential role in bioremediation and immobilization of soluble U(VI) in contaminated groundwater. More recently, some microorganisms have been examined for their role in immobilization of U(VI) via precipitation of uranyl phosphate minerals mediated by microbial phosphate release, alleviating the requirement for long-term redox control. Here, we investigated the mechanism of U(VI) removal mediated by an environmental isolate, strain UFO1, that is indigenous to the Field Research Center (FRC) in Oak Ridge, TN and has been detected in U(VI)-contaminated sediments. Changes in U(VI) speciation were examined in the presence and absence of the electron-shuttling moiety, anthraquinone-2,6-disulfonate (AQDS). Cell suspensions were capable of nearly complete removal of 100 ?M U(VI) from solution within 48 hours; U(VI) removal was not dependent on the presence of an exogenous electron donor or AQDS, although AQDS increased the rate of U(VI) removal. X-ray Absorption Near Edge Structure (XANES) spectroscopic measurements indicated that U(IV) was the predominant oxidation state of uranium in cell suspensions in both the absence and presence of 100 ?M AQDS. However, extended X-ray Absorption Fine Structure spectroscopy (EXAFS) measurements indicated that 17% of the cell-associated precipitates in a U(VI)-treated suspension that lacked AQDS had spectral characteristics consistent with a uranyl phosphate solid phase. The potential involvement of phosphate was consistent with observed increases in soluble phosphate concentrations over time in UFO1 cell suspensions, which suggested phosphate liberation from the cells. TEM-EDS confirmed the presence of uranyl phosphate with a U:P ratio consistent with autunite (1:1). EXAFS analyses further showed that U(IV) was present predominantly as a monomeric complex sorbed to carboxylate functional groups on biomass and also suggested that a fraction of the U(IV) was coordinated to phosphoryl ligands. These results suggest that strain UFO1 has the ability to facilitate U(VI) removal from solution via both reductive and phosphate precipitation mechanisms, and may potentially be useful for the remediation of U-contaminated sediments at the FRC or elsewhere.

  6. Evidence for Multiple Modes of Uranium Immobilization by an Anaerobic Bacterium

    SciTech Connect (OSTI)

    Allison E. Ray; John R. Bargar; Alice C. Dohnalkova; Vaidee Sivaswamy; Yoshiko Fujita; Timothy S. Magnuson

    2011-05-01T23:59:59.000Z

    ABSTRACT Microbial reduction of hexavalent uranium has been studied widely for its potential role in bioremediation and removal of soluble U(VI) from contaminated groundwater. More recently, some microorganisms have been examined for their role in immobilization of U(VI) via precipitation of uranyl phosphate minerals mediated by microbial phosphate release, alleviating the requirement for long-term redox control. Here, we investigated the mechanism of U(VI) removal mediated by an environmental isolate, strain UFO1, that is indigenous to the Field Research Center (FRC) in Oak Ridge, TN and has been detected in U(VI)-contaminated sediments. U(VI) removal was examined in the presence and absence of the electron-shuttling moiety, anthraquinone-2,6-disulfonate (AQDS). Cell suspensions were capable of the near complete removal of 100 uM U(VI) from solution within 48 hours; U(VI) removal was not dependent on the presence of an exogenous electron donor or AQDS, although AQDS increased the rate of U(VI) removal. Profiles of ortho-phosphate concentration over time suggested phosphate liberation from cells. However, X-ray Absorption Near Edge Structure (XANES) spectroscopic measurements indicated that U(IV) was the predominant oxidation state of uranium in cell suspensions in both the absence and presence of 100 uM AQDS. Extended X-ray Absorption Fine Structure spectroscopy (EXAFS) measurements indicated that 20% of the cell-associated precipitates in a U(VI)-treated suspension that lacked AQDS had spectral characteristics consistent with a uranyl phosphate solid phase. EXAFS fits further show that that U(IV) is present dominantly as a monomeric sorbed complex. TEM-EDS confirmed the presence of uranyl phosphate with a U:P ratio consistent with autunite (1:1). These results suggest that strain UFO1 has the ability to mediate U(VI) removal from solution via both reductive and phosphate precipitation mechanisms, and may potentially be useful for the remediation of U-contaminated sediments at the FRC.

  7. Trichloroethene Removal From Waste Gases in Anaerobic Biotrickling Filters Through Reductive Dechlorination

    E-Print Network [OSTI]

    Popat, Sudeep Chandrakant

    2010-01-01T23:59:59.000Z

    in a foamed emulsion bioreactor. Environ. Sci. Technol.in a foamed emulsion bioreactor. Environ. Sci. Technol.of a trickle-bed bioreactor: Carbon disulfide removal.

  8. Trichloroethene Removal From Waste Gases in Anaerobic Biotrickling Filters Through Reductive Dechlorination

    E-Print Network [OSTI]

    Popat, Sudeep Chandrakant

    2010-01-01T23:59:59.000Z

    methyl tert-butyl ether (MTBE) vapors into water was used.MTBE is highly soluble in water (dimensionless Henry’sgas stream was laden with MTBE vapors (200-300 mg m -3 )

  9. anaerobically growing xylose-utilizing: Topics by E-print Network

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

    to develop a system which fulfill the requirements and at the same time is simple and cost-effective, a pilot-scale setup was designed and constructed at a wastewater treatment...

  10. Flexibility in Anaerobic Metabolism as Revealed in a Mutant of Chlamydomonas reinhardtii Lacking Hydrogenase Activity

    E-Print Network [OSTI]

    fermentation products formate, acetate, ethanol, CO2 and molecular hydrogen (H2,) in what is classified reinhardtii has a network of fermentation pathways that become active when cells acclimate to anoxia contribute to NAD(P)H reoxidation, and continued glycolysis and fermentation in the absence of O2

  11. HYDROGEN PRODUCTION BY ANAEROBIC MICROBIAL COMMUNITIES EXPOSED TO REPEATED HEAT TREATMENTS

    E-Print Network [OSTI]

    communities (a process sometimes referred to as "dark fermentation") using organic waste as the substrate has maximum yield of hydrogen fermentation is reported to be four moles of hydrogen per mole of glucose of the substrate would be converted to acetic acid. These values correspond to a theoretical maximum yield of 0

  12. anaerobic methane-oxidizing community: Topics by E-print Network

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

    and government. Forest Renewal BC funding- from stumpage fees and royalties that forest companies pay for the right to harvest timber on Crown lands- is reinvested in the forest,...

  13. Biogeochemical modelling of anaerobic vs. aerobic methane oxidation in a meromictic crater lake (Lake Pavin, France)

    E-Print Network [OSTI]

    Boyer, Edmond

    Géosciences, 1A rue de la Férolerie, 45071 Orléans Cedex 2, France Abstract Methane is a powerful greenhouse gas and its concentration in the atmosphere has increased over the past decades. Methane produced

  14. SUPPORTING INFORMATION A two-stage microbial fuel cell and anaerobic fluidized bed membrane

    E-Print Network [OSTI]

    ± 3 85.2 92.5 sCOD 8 114 ± 8 57 ± 14 50.3 16 ± 3 72.2 86.2 TSS 5 45 ± 10 22 ± 4 51.0 0.7 ± 0.2 96.9 99

  15. Microbiology and physiology of anaerobic fermentations of cellulose. Progress report, September 1, 1979-May 15, 1980

    SciTech Connect (OSTI)

    Peck, H.D. Jr.; Ljungdahl, L.G.

    1980-01-01T23:59:59.000Z

    Reseach progress is reported for the period September, 1979 to May, 1980. Studies on the mesophilic and thermophilic microorganisms fermenting cellulose to various products (ethanol, acetate, CO/sub 2/, H/sub 2/, and methane) are summarized. (ACR)

  16. Anaerobic oxidation of methane by sulfate in hypersaline groundwater of the Dead Sea aquifer

    E-Print Network [OSTI]

    Cambridge, University of

    (Kasten & Jørgensen, 2000). SO4 2À þ 2ðCH2OÞ ! H2S þ 2HCO3 À ð1Þ When methane is available as the electron lower as salinity increases (2.5 mM sulfate removal at 3000 mM chlorine but only 0.5 mM sulfate removal

  17. Trichloroethene Removal From Waste Gases in Anaerobic Biotrickling Filters Through Reductive Dechlorination

    E-Print Network [OSTI]

    Popat, Sudeep Chandrakant

    2010-01-01T23:59:59.000Z

    existing chemical scrubbers to biotrickling filters for H2Sexisting chemical scrubbers to biotrickling filters for H2San industrial chemical scrubber into a biotrickling filter:

  18. ANAEROBIC FERMENTATION OF SIMULATED IN-SITU OIL SHALE RETORT WATER

    E-Print Network [OSTI]

    Ossio, E.A.

    2011-01-01T23:59:59.000Z

    Water from Green River Oil Shale, Chemistry and Industry,an In-Situ Produced Oil-Shale Processin g Water, LERC ReportOf Simulated In-Situ Oil Shale Retort Water B.A. Ossio, J.P.

  19. Trichloroethene Removal From Waste Gases in Anaerobic Biotrickling Filters Through Reductive Dechlorination

    E-Print Network [OSTI]

    Popat, Sudeep Chandrakant

    2010-01-01T23:59:59.000Z

    phase liquid source zone bioremediation. Water Environ. Res.In Situ and On-Site Bioremediation Symposium, Baltimore, MD,In Situ and On-Site Bioremediation Symposium, Baltimore, MD,

  20. A comparison of the histamine production in fish packaged aerobically and anaerobically

    E-Print Network [OSTI]

    Lu, Shin

    1975-01-01T23:59:59.000Z

    higher temperature promoted the rate of bacterial growth and histamine formation in vacuum packaged and overwrapped fish. Histamine formation was correlated with bacterial growth in only one species, red snapper. There was no consistent pattern... of different development of histamine content in vacuum packaged and over(napped fish. ACKNOWLEDGEMENT S The author wishes to express his most sincere gratitude to Dr. Bryant P. Cobb, who suggested the research program and whose encouragement and very...

  1. Dissolved organic carbon dynamics in anaerobic sediments of the Santa Monica Basin

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    C. (1996) Biogenic matter diagenesis on the sea ?oor: aQuanti?cation of early diagenesis: dissolved constituents inR. A. (1990) Early diagenesis and recycling of biogenic

  2. anaerobic sulfate-reducing bacteria: Topics by E-print Network

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

    Diversity and characterization of sulfate-reducing bacteria in groundwater at a uranium mill tailings site CiteSeer Summary: plays a role in both natural attenuation and...

  3. ANAEROBIC FERMENTATION OF SIMULATED IN-SITU OIL SHALE RETORT WATER

    E-Print Network [OSTI]

    Ossio, E.A.

    2011-01-01T23:59:59.000Z

    Water from Green River Oil Shale, Chemistry and Industry,for an In-Situ Produced Oil-Shale Processin g Water, LERCOf Simulated In-Situ Oil Shale Retort Water B.A. Ossio, J.P.

  4. Anaerobic fermentation of rice straw and chicken manure to carboxylic acids

    E-Print Network [OSTI]

    Agbogbo, Frank Kwesi

    2007-04-25T23:59:59.000Z

    In this work, 80% lime-treated rice straw and 20% lime-treated chicken manure were used as substrates in rotary fermentors. Countercurrent fermentation was performed at various volatile solid loading rates (VSLR) and liquid residence times (LRT...

  5. The incidence and significance of anaerobic bacteria in the equine uterus

    E-Print Network [OSTI]

    Bolinger, Dean Roger

    1987-01-01T23:59:59.000Z

    in the genital tract was correct for prediction of infection, based on histological presence or absence of inflammatory changes in the endometrium in 68/a of these 153 cases. Wingfield-Digby and Ricketts (1982) showed that bacteriological findings were...-Digby 1978). Wingfield- Digby and Ricketts (1982) showed that uterine bacteriological culture growth correlated with cytological findings 55% of the time. Using the bacteriological criteria of Rickeus (1981)th t lyp lt f~St ~id, E. h ' h' EKE Kl hill p 1...

  6. An integrated system to remote monitor and control anaerobic wastewater treatment plants through the internet

    E-Print Network [OSTI]

    Bernard, Olivier

    controllers that stabilise the treatment plant, meet the depollution requirements and provide a biogas quality to degrade slowly degradable substrates at high #12;concentrations, very low sludge production, low energy

  7. anaerobic methanol-degrading consortium: Topics by E-print Network

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

    Baylor University, Rice University, University of Texas-Austin, and University of Texas-San Antonio Administrative Home - College of Liberal Arts, Texas A&M University TXCRDC...

  8. Trichloroethene Removal From Waste Gases in Anaerobic Biotrickling Filters Through Reductive Dechlorination

    E-Print Network [OSTI]

    Popat, Sudeep Chandrakant

    2010-01-01T23:59:59.000Z

    this has been done using incineration or adsorption ontoIn the case of TCE, incineration or adsorption ontoonto activated carbon, incineration etc. The principle of

  9. Methane production during the anaerobic decomposition of composted and raw organic refuse in simulated landfill cells

    E-Print Network [OSTI]

    West, Margrit Evelyn

    1995-01-01T23:59:59.000Z

    Methane contributes 20% annually to increases in global warming, and is explosive at concentrations of 5-15% in air. Landfills contribute 15% to total methane emissions. This study was conducted to determine the potential decrease in methane...

  10. ANAEROBIC FERMENTATION OF SIMULATED IN-SITU OIL SHALE RETORT WATER

    E-Print Network [OSTI]

    Ossio, E.A.

    2011-01-01T23:59:59.000Z

    Water co produced with shale oil and decanted from it isWater from Green River Oil Shale, Chemistry and Industry,for an In-Situ Produced Oil-Shale Processin g Water, LERC

  11. E-Print Network 3.0 - anaerobic chemostat cultures Sample Search...

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

    1mL overnight ... Source: Gresham, David JJ - Lewis-Sigler Institute for Integrative Genomics, Princeton University Collection: Biology and Medicine 2 Corpet -2000 -Models of Gut...

  12. Effect of a liquid multi-vitamin-mineral supplement on anaerobic exercise performance

    E-Print Network [OSTI]

    Fry, Andrew C.; Bloomer, Richard J.; Falvo, Michael J.; Moore, Chris A.; Schilling, Brian K.; Weiss, Lawrence W.

    2006-01-01T23:59:59.000Z

    tension to the flywheel. Additionally, the flywheel is inter- faced with a switch connected to a printer, which records a mark on continu- ous running paper for each flywheel revolution performed. This allows us to calculate the total number of flywheel...

  13. Research Focus: Conversion of Wastewater into Liquid Fuels and Chemicals via Anaerobic Mixed Cultures.

    E-Print Network [OSTI]

    Walter, M.Todd

    ). Initiative for Renewable Energy and the Envrionment (IREE) Scholar: "Extraction of Oil from Microalgae National Laboratory (Sequim, WA). US Department of Energy SULI Fellow: "Polysaccharide accumulation NA (Eddyville, IA). Managed several energy and water recovery projects on citric acid and other

  14. Complete Genome Sequence of the Anaerobic, Halophilic Alkalithermophile Natranaerobius thermophilus JW/NM-WN-LF

    E-Print Network [OSTI]

    Zhao, Baisuo

    2013-01-01T23:59:59.000Z

    from soda lakes of the Wadi An Natrun, Egypt, and proposalsun-heated salt lake Fazda (Wadi An Natrun, Egypt) (5). N.

  15. Kinetics of Fe(II)-catalyzed transformation of 6-line ferrihydrite under anaerobic flow conditions

    E-Print Network [OSTI]

    Yang, L.

    2010-01-01T23:59:59.000Z

    transformation to goethite via the Fe(II) pathway. Am.ferrihydrite, and goethite. Geochim. Cosmochim. Acta 2001,between Aqueous Fe(II) and Goethite: An Fe Isotope Tracer

  16. Anaerobic uptake and utilization of free glycine-2-C¹? by the estuarine bivalve Rangia cuneata

    E-Print Network [OSTI]

    Philley, John Calvin

    1977-01-01T23:59:59.000Z

    . . . Concentrations of Free Amino Acids in Animal Tissues, . . . Major Constituents of the FAA Pool. Mlajor Sources of Amino Acids. Free Amino Acid Uptake From Seawater Role of Free Amino Acids in Osmoregulation. . . . . . . . . . . . . . Methods of Decreasing... the Free Amino Acid Pool. . . . . . . . . , Hypoosmotic Response. Hyoerosmotic Response. FAA Uptake Regulatory Mechanism Nutritional Significance of FAA FAA as a Supplemental Energy Source During Facultatiye Anaerobiosis MATERIALS AND METHODS...

  17. anaerobic solid-liquid system: Topics by E-print Network

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

    economic and effective method to reduce the biogas desulfurization cost by removing hydrogen sulfide more than 90 % without external desulfurization equipments. KeywordsBiogas,...

  18. anaerobic syntrophic long-chain: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  19. anaerobic methane-oxidizing archaea: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  20. anaerobic selenate-respiring bacteria: Topics by E-print Network

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

    species can also obtain carbon from organic sources such as acetate and formate. Hydrogen and sulfur appear to be the preferred electron donors. Furthermore, many of these...

  1. anaerobic ammonium-oxidizing anammox: Topics by E-print Network

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

    for Korean food waste with high water contents (>80%). The hydrogen sulfide in the biogas was removed by a biological desulfurization equipment integrated in the horizontal...

  2. Wastewater Effluent Polishing Systems of Anaerobic Baffled Reactor Treating Black-water from Households

    E-Print Network [OSTI]

    Richner, Heinz

    %, respectively. The highest treatment performances in the sand filter and constructed wetland units were reached systems for the treatment of domestic blackwater, aimed at determining the treatment performance of different integrated low-cost wastewater treatment systems, comprising one ABR as first treatment step

  3. Article original Adaptation digestive du lapin

    E-Print Network [OSTI]

    Boyer, Edmond

    Article original Adaptation digestive du lapin à la teneur en constituants pariétaux du régime ne diffère pas d'un régime à l'autre, du fait d'une régulation de l'énergie digestible ingérée. L le régime B. lapin / digestion / fibre / adaptation / transit Summary — Digestive adaptation

  4. Potential digestibilities and digestion kinetics of forage cell wall components

    E-Print Network [OSTI]

    Tauskey, William Henry

    1973-01-01T23:59:59.000Z

    ); and lignin (L) . Between species comparison of forage composition indicated a higher percent neutral detergent extract (cell solubles) and cellulose for Sorghums. The coefficients of digestibility for all fractions were higher for the Sorghums.... There was a significant correlation (P&. 05) between the ratio of neutral detergent extract/NDF ratio and digest- ibility. The lignin/cellulose ratio in forage composition ranged from 1 to 5 for Bermudas and 1 to 7. 5 for Sorghums. The same rati. o...

  5. Last Updated 5/2014 Case Study AD-21 Manure Management Program

    E-Print Network [OSTI]

    Walter, M.Todd

    type Complete mixed Digester designer EnviTec Biogas Date Commissioned June 2012 Influent Raw manure touring other biogas plants as well as received hands on training to prepare him to oversee the digester.manuremanagement.cornell.edu Anaerobic Digestion at Lawnhurst Farms: Case Study Michael Boerman, Curt Gooch, P.E. Jenny Pronto May 2014

  6. Biochemical methane potential and biodegradability of complex organic substrates Rodrigo A. Labatut

    E-Print Network [OSTI]

    Angenent, Lars T.

    : Anaerobic digestion Biodegradability Biomethane Dairy manure BMP a b s t r a c t The biomethane potential. In addition, the ability of two theoretical methods to estimate the biomethane potential of substrates to manure-only digestion. Additionally, biomethane potential of some co-digestion mixtures suggested

  7. Ozone treatment of biomass to enhance digestibility 

    E-Print Network [OSTI]

    Almendarez, Maria Elena

    2000-01-01T23:59:59.000Z

    is very resistant to enzymatic degradation. Lignocellulosic materials require pretreatment to enhance their digestibility. The main objective of this research was to further enhance the digestibility of biomass (bagasse) with ozonation as a follow...

  8. Ozone treatment of biomass to enhance digestibility

    E-Print Network [OSTI]

    Almendarez, Maria Elena

    2000-01-01T23:59:59.000Z

    is very resistant to enzymatic degradation. Lignocellulosic materials require pretreatment to enhance their digestibility. The main objective of this research was to further enhance the digestibility of biomass (bagasse) with ozonation as a follow...

  9. DIGESTER GAS - FUEL CELL - PROJECT

    SciTech Connect (OSTI)

    Dr.-Eng. Dirk Adolph; Dipl.-Eng. Thomas Saure

    2002-03-01T23:59:59.000Z

    GEW has been operating the first fuel cell in Europe producing heat and electricity from digester gas in an environmentally friendly way. The first 9,000 hours in operation were successfully concluded in August 2001. The fuel cell powered by digester gas was one of the 25 registered ''Worldwide projects'' which NRW presented at the EXPO 2000. In addition to this, it is a key project of the NRW State Initiative on Future Energies. All of the activities planned for the first year of operation were successfully completed: installing and putting the plant into operation, the transition to permanent operation as well as extended monitoring till May 2001.

  10. Weekly Digest Guide The Weekly Digest is YSM's weekly events newsletter, distributed early

    E-Print Network [OSTI]

    Lee, Daeyeol

    Weekly Digest Guide The Weekly Digest is YSM's weekly events newsletter, distributed early each Friday morning to 9,000+ email recipients on the Yale campus. The Weekly Digest includes approximately. Timeline The Weekly Digest is published on Fridays for events taking place the following week. Lead time

  11. Lipid digestion and effects of diets rich in lipids on carbohydrate and nitrogen digestion. A review *

    E-Print Network [OSTI]

    Boyer, Edmond

    Lipid digestion and effects of diets rich in lipids on carbohydrate and nitrogen digestion-Genès-Champanelle, France This review deals with ruminal metabolism and intestinal digestion of lipids, and with the conse- quences of lipid supplementation on carbohy- drate and nitrogen digestion. Ruminal hydrolysis of lipids

  12. Molecular Biology Basics Planning Restriction Enzyme Digests

    E-Print Network [OSTI]

    Aris, John P.

    Molecular Biology Basics Planning Restriction Enzyme Digests A. Checklist: Buffer type Addition of BSA Optimum temperature Number of units of enzyme B. Plan to digest DNA with an "excess" of enzyme activity. Plan for the "excess" to be divided between time of digestion and number of units of enzyme

  13. Privacy Impact Assessment Chandra Digest Request

    E-Print Network [OSTI]

    Mathis, Wayne N.

    Privacy Impact Assessment Chandra Digest Request I. System Identification 1. IT System Name: Chandra EPO Digest (http://chandra.harvard.edu/chronicle/news_priv.html) 2. IT System Sponsor: Van Mc digest. 4. With whom the information will be shared. #12;Only the providers of the material (certain CXC

  14. Effects of caseinomacropeptide (CMP) on digestion regulation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Effects of caseinomacropeptide (CMP) on digestion regulation M Yvon S Beucher P Guilloteau2 I Le sums up the knowledge concerning its effects on the digestive function. Part 1 recalls the origin to be defined accurately. Part 2 summarizes the effects of CMP on digestive secretions. The major effect

  15. Original article Variability of digestibility criteria

    E-Print Network [OSTI]

    Boyer, Edmond

    Original article Variability of digestibility criteria in maize elite hybrids submitted of various in vitro digestibility criteria used to estimate genotypic variation in silage maize elite hybrids and in vitro digestibility of whole-plant and cell-walls were pre- dicted by near infra-red reflectance

  16. Chemical Reactor Models of Digestion Modulation

    E-Print Network [OSTI]

    Logan, David

    Chemical Reactor Models of Digestion Modulation William Wolesensky & J. David Logan Department give an overview of the application of chemical reactor theory to models of digestion processes and indicate how those models extend to eco-physiological questions of modulation of digestion and feeding

  17. Sequence Assembly Validation by Restriction Digest Fingerprint

    E-Print Network [OSTI]

    Rouchka, Eric

    Sequence Assembly Validation by Restriction Digest Fingerprint Comparison Eric C. Rouchka and David examines the use of restriction digest analysis as a method for testing the fidelity of sequence assembly. Restriction digest fingerprint matching is an established technology for high resolution physical map

  18. Methane Digesters and Biogas Recovery - Masking the Environmental Consequences of Industrial Concentrated Livestock Production

    E-Print Network [OSTI]

    Di Camillo, Nicole G.

    2011-01-01T23:59:59.000Z

    DIGESTERS AND BIOGAS RECOVERY Digesters Do Not Address theMethane Digesters and Biogas Recovery-Masking theII. METHANE DIGESTERS AND BIOGAs RECOVERY- IN THE

  19. Energy from vascular plant wastewater treatment systems

    SciTech Connect (OSTI)

    Wolverton, B.C.; McDonald, R.C.

    1981-04-01T23:59:59.000Z

    Water hyacinth (Eichhornia crassipes) duckweed (Spirodela sp. and Lemna sp.), water pennywort (Hydrocotyle ranunculoides), and kudzu (Pueraria lobata) were anaerobically fermented using an anaerobic filter technique that reduced the total digestion time from 90 d to an average of 23 d and produced 0.14 to 0.22 m/sup 3/ CH/sub 4//kg (dry weight) (2.3 to 3.6 ft/sup 3//lb) from mature filters for the 3 aquatic species. Kudzu required an average digestion time of 33 d and produced an average of 0.21 m/sup 3/ CH/sub 4//kg (dry weight) (3.4 ft/sup 3//lb). The anaerobic filter provided a large surface area for the anaerobic bacteria to establish and maintain an optimal balance of facultative, acid-forming, and methane-producing bacteria. Consequently the efficiency of the process was greatly improved over prior batch fermentations.

  20. On the construction of digest functions for manual authentication protocols

    E-Print Network [OSTI]

    Jeavons, Peter

    On the construction of digest functions for manual authentication protocols Abstract A digest. Frequently a digest function needs to have a very short output (e.g. 16­32 bits) and no key is used to digest, notably message authentication codes or MACs. Short digests can be constructed directly or by "condensing