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1

DuPont Danisco Cellulosic Ethanol | Open Energy Information  

Open Energy Info (EERE)

Danisco Cellulosic Ethanol Danisco Cellulosic Ethanol Jump to: navigation, search Name DuPont Danisco Cellulosic Ethanol Place Itasca, Illinois Zip 60143 Product DuPont Danisco Cellulosic Ethanol is a joint venture to develop technologies for cellulosic ethanol. Coordinates 32.1666°, -97.154369° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.1666,"lon":-97.154369,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

2

DuPonts Journey to Build a Global Cellulosic BioFuel Business Enterprise  

Energy.gov (U.S. Department of Energy (DOE))

Plenary I: Progress in Advanced Biofuels DuPonts Journey to Build a Global Cellulosic BioFuel Business Enterprise William Provine, DirectorScience and Technology External Affairs, DuPont

3

STATEMENT OF CONSIDERATIONS REQUEST BY DANISCO U.S. INC. (f/k/a GENENCOR INTERNATIONAL,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DANISCO U.S. INC. (f/k/a GENENCOR INTERNATIONAL, DANISCO U.S. INC. (f/k/a GENENCOR INTERNATIONAL, INC.) FOR WAIVER OF U.S. COMPETITIVENESS PROVISION IN W(A)-00- 013 FOR SUBCONTRACT ZCO-0-30017-01 UNDER THE MIDWEST RESEARCH INSTITUTE'S MANAGEMENT AND OPERATING CONTRACT DE-AC36-98GO10337 NREL and Danisco entered into subcontract ZCO-0-30017-01 to conduct research and development work relating to cellulase cost reduction for bioethanol production. In connection with the subcontract, Danisco also licensed certain NREL patents, subject to 35 USC 202-204. The goal of the research project was the development of low-cost cellulase enzymes that can be used to convert biomass into fuel ethanol. Danisco requested, and was granted waiver W(A)-00- 013, which was submitted with this petition, and which includes the U.S. Competitiveness

4

STATEMENT OF CONSIDERATIONS PETITION FOR ADVANCE WAIVER OF PATENT RIGHTS BY DANISCO  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DANISCO DANISCO US, INC. (UDANISCO") UNDER AGREEMENT NO. DE-FG36-08G018078 BETWEEN DANISCO AND DOE; W(A)-08-045; CH-1464 The Petitioner, DANISCO, has requested a waiver of domestic and certain foreign patent rights for all subject inventions that may be conceived or first actually reduced to practice under the above-identified agreement, and subcontracts thereof. The agreement is entitled "DEVELOPMENT OF COMMERCIAL ENZYMES SYSTEM FOR LIGNOCELLULOSIC BIOMASS SACCHARIFICATION." This waiver shall not impact the rights of those parties subject to Public Law 96-517, as amended, nor shall it grant any rights in inventions made by employees of the National Laboratories. The object of the current project is to address one of the key technical barriers

5

Making Biofuel From Corncobs and Switchgrass in Rural America | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Biofuel From Corncobs and Switchgrass in Rural America Biofuel From Corncobs and Switchgrass in Rural America Making Biofuel From Corncobs and Switchgrass in Rural America June 11, 2010 - 4:48pm Addthis DuPont Danisco Cellulosic Ethanol (DDCE) opened a new biorefinery in Vonore, Tenn., last year. | Photo courtesy of DDCE DuPont Danisco Cellulosic Ethanol (DDCE) opened a new biorefinery in Vonore, Tenn., last year. | Photo courtesy of DDCE Lindsay Gsell Energy crops and agricultural residue, like corncobs and stover, are becoming part of rural America's energy future. Unlike the more common biofuel derived from corn, these are non-food/feed based cellulosic feedstocks, and the energy content of the biomass makes it ideal for converting to sustainable fuel. Last January in Vonore, Tenn., DuPont Danisco Cellulosic Ethanol (DDCE)

6

DuPont | Open Energy Information  

Open Energy Info (EERE)

DuPont DuPont Jump to: navigation, search Name DuPont Place Wilmington, Delaware Zip 19898 Product US holding company; manufacturer of tedlar films used as a material for TPT backsheet in PV module production. Website http://www2.dupont.com/ Coordinates 42.866922°, -72.868494° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.866922,"lon":-72.868494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

7

DuPont Apollo | Open Energy Information  

Open Energy Info (EERE)

Apollo Apollo Jump to: navigation, search Name DuPont Apollo Place Hong Kong, Hong Kong Sector Solar Product Hong Kong-based thin-film PV module manufacturer that provides solar energy solutions by doing research and development on PV technology and system. References DuPont Apollo[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. DuPont Apollo is a company located in Hong Kong, Hong Kong . References ↑ "DuPont Apollo" Retrieved from "http://en.openei.org/w/index.php?title=DuPont_Apollo&oldid=344346" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link Browse properties

8

DuPont Energy Breakout Initiative  

E-Print Network (OSTI)

In February 2005, DuPont launched the Energy Breakout initiative to accelerate improvement in energy efficiency and reduce energy costs in its US operations. This comprehensive program, led by the Senior Vice President of Operations, resulted...

Bailey, W. F.

2007-01-01T23:59:59.000Z

9

STATEMENT OF CONSIDERATIONS REQUEST BY DUPONT SUPERCONDUCTIVITY...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

scale example of the usefulness of HTS separation technology to industry. WAIVER ACTION - ABSTRACT W(A)-99-008 REQUESTOR SUBCONTRACT SCOPE OF RATIONALE FOR DECISION WORK DuPont...

10

Dupont Fuel Cells | Open Energy Information  

Open Energy Info (EERE)

Dupont Fuel Cells Dupont Fuel Cells Jump to: navigation, search Name Dupont Fuel Cells Place Wilmington, Delaware Zip DE 19880-0 Product A subsidiary of Dupont which specializes in fuel cell technology. It produces DuPontâ"¢ Nafion® membranes and dispersions to multilayer membrane electrode assemblies and specialty conductive plates for fuel cells. Coordinates 42.866922°, -72.868494° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.866922,"lon":-72.868494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

11

STATEMENT OF CONSIDERATIONS REQUEST BY E. I. DuPONT de NEMOURS AND COMPANY (DuPONT) FOR  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DuPONT de NEMOURS AND COMPANY (DuPONT) FOR DuPONT de NEMOURS AND COMPANY (DuPONT) FOR AN ADVANCE WAIVER OF PATENT RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. GOVWORKS-70224 ENTITLED "INTEGRATED CORN BASED BIOREFINING"; W(A)-03-026; CH-1151 As set out in the attached waiver petition and in subsequent discuss3ions with DOE Patent Counsel, E. I. DuPont de Nemours and Company(DuPont) has requested an advanced waiver of domestic and foreign patent rights for all subject inventions made under the above- identified cooperative agreement by its employees and its subcontractors' tsmployees, regardless of tier, except inventions made by subcontractors eligible to retain title to inventions pursuant to P.L. 96-517, as amended, and National Laboratories. DuPont is leading a teaming arrangement including the National Renewable Energy

12

STATEMENT OF CONSIDERATIONS REQUEST BY DUPONT SUPERCONDUCTIVITY FOR AN ADVANCE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DUPONT SUPERCONDUCTIVITY FOR AN ADVANCE DUPONT SUPERCONDUCTIVITY FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER DOE CONTRACT NO. DE-FC36-99GO10287; W(A)-99-008; CH-1002 The Petitioner, DuPont Superconductivity (hereinafter "DuPont"), has requested a waiver of domestic and foreign patent rights for all subject inventions arising from its participation under the above referenced contract entitled "High Temperature Superconducting Reciprocating Magnetic Separator". This contract relates to the construction of 1/4 commercial scale High Temperature Superconducting (hereinafter "HTS") Reciprocating Magnetic Separations Unit for the purification ofkaoline clay and titanium dioxide. It is anticipated that this project will be performed in three phases, over a period of

13

STATEMENT OF CONSIDERATIONS REQUEST BY E. I. DUPONT DE NEMOURS...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DUPONT DE NEMOURS & CO., INC. FOR AN ADVANCE WAIVER OF PATENT RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC36-01GO11101 ENTITLED "HIGH TEMPERATURE SUPER- CONDUCTING...

14

Maciek R. Antoniewicz DuPont Young Professor  

E-Print Network (OSTI)

Maciek R. Antoniewicz DuPont Young Professor Assistant Professor Metabolic engineering; systems in superconductivity, catalysis and fast ion conduction. Jingguang G. Chen Claire D. LeClaire Professor Professor, environmental catalysis, and photocatalysis. L. Pamela Cook Associate Dean, Engineering Joint Professor

Lee, Kelvin H.

15

Energy Secretary Chu to Tour DuPont Clean Energy Innovation Facilities |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DuPont Clean Energy Innovation DuPont Clean Energy Innovation Facilities Energy Secretary Chu to Tour DuPont Clean Energy Innovation Facilities May 22, 2012 - 5:13pm Addthis WASHINGTON - Tomorrow, Wednesday, May 23, 2012, U.S. Energy Secretary Steven Chu will visit DuPont in Wilmington, Delaware, where he will tour the company's clean energy research and development facilities, including innovative work on advanced biofuels. Secretary Chu will highlight how companies like DuPont are helping the United States lead the global race for clean energy technologies and reduce our dependence on foreign oil. Following the tour, Secretary Chu will participate in a media availability with DuPont's Chief Innovation Officer Tom Connelly and Chief Science & Technology Officer Doug Muzyka. WHEN:

16

DuPont's Journey to Build a Global Cellulosic BioFuel Business...  

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

& Regulation Cell Tissue Culture Protein Engineering Molecular Breeding Genomics Bio- informatics Entomology Plant Genetics Particle & Dispersion Science World Class...

17

Manhattan Project: DuPont and Hanford, Hanford Engineer Works, 1942  

Office of Scientific and Technical Information (OSTI)

The president of DuPont, Walter Carpenter, with Generals Levin H. Campbell, Everett Hughes, and Charles T. Harris. DUPONT AND HANFORD The president of DuPont, Walter Carpenter, with Generals Levin H. Campbell, Everett Hughes, and Charles T. Harris. DUPONT AND HANFORD (Hanford Engineer Works, 1942) Events > The Plutonium Path to the Bomb, 1942-1944 Production Reactor (Pile) Design, 1942 DuPont and Hanford, 1942 CP-1 Goes Critical, December 2, 1942 Seaborg and Plutonium Chemistry, 1942-1944 Final Reactor Design and X-10, 1942-1943 Hanford Becomes Operational, 1943-1944 The scientists of the Met Lab had the technical expertise to design a production pile, but construction and management on an industrial scale required an outside contractor. The DuPont Corporation was an ideal candidate, but the giant chemical firm was hesitant to join the project due to concern over accusations that it had profiteered during World War I. On October 3, 1942, DuPont agreed to design and build the chemical separation plant for the production pile facility then planned for Oak Ridge. Leslie Groves tried to entice further DuPont participation by having the firm prepare an appraisal of the pile (reactor) project and by placing three DuPont staff members on the Lewis Committee. DuPont ultimately agreed to become the primary contractor for plutonium-related work, but because of continuing sensitivity about its public image its contract called for a total payment of only dollar over actual costs. In addition, DuPont vowed to stay out of the bomb business after the war and offered all patents to the United States government.

18

Overview of University of Minnesota DuPont program with Local Cooperatives  

E-Print Network (OSTI)

of Minnesota had a ½ day safety culture education program in March 2011 ­ Used speakers from DuPont and Garden culture. DuPont has found that safety culture is highly correlated to safety performance measured by reportable safety incidents. · Uses a unique culture scoring system that scores firms on a 100 point scale

Levinson, David M.

19

STATEMENT OF CONSIDERATIONS REQUEST BY E. I. DUPONT DE NEMOURS & CO., INC. FOR AN ADVANCE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DUPONT DE NEMOURS & CO., INC. FOR AN ADVANCE DUPONT DE NEMOURS & CO., INC. FOR AN ADVANCE WAIVER OF PATENT RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC36-01GO11101 ENTITLED "HIGH TEMPERATURE SUPER- CONDUCTING RECIPROCATING MAGNETIC SEPARATOR"; W(A)-01-035; CH-1080 As set out in the attached waiver petition and in subsequent discussions with DOE Patent Counsel, E.I. duPont de Nemours & Co., Inc. (DuPont) has requested an advance waiver of domestic and foreign patent rights for all subject inventions made under the above- identified cooperative agreement by its employees and its subcontractors' employees, regardless of tier, except inventions made by subcontractors eligible to retain title to inventions pursuant to P.L. 96-517, as amended, and National Laboratories. Referring to item 2 of DuPont's waiver petition, the purpose of this agreement

20

DuPont Technology Breaks Away From Glass | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass April 22, 2010 - 4:20pm Addthis Delaware-based DuPont is working to develop ultra-thin moisture protective films for photovoltaic panels - so thin they're about 1,000 times thinner than a human hair. DuPont is working on new photovoltaic technology that will let manufacturers of copper indium gallium selenide, or CIGS, solar cells and organic light emitting diodes, or OLED, displays protect products with thin layers of ceramic and polymer material instead of glass. These ultra-thin protective films could help prevent deterioration from moisture. Because of their potential to reduce the cost of producing solar energy, "thin-film PV modules are projected to be the fastest-growing segment of

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


21

DuPont Technology Breaks Away From Glass | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass April 22, 2010 - 4:20pm Addthis Delaware-based DuPont is working to develop ultra-thin moisture protective films for photovoltaic panels - so thin they're about 1,000 times thinner than a human hair. DuPont is working on new photovoltaic technology that will let manufacturers of copper indium gallium selenide, or CIGS, solar cells and organic light emitting diodes, or OLED, displays protect products with thin layers of ceramic and polymer material instead of glass. These ultra-thin protective films could help prevent deterioration from moisture. Because of their potential to reduce the cost of producing solar energy, "thin-film PV modules are projected to be the fastest-growing segment of

22

STATEMENT OF CONSIDERATIONS REQUEST BY DUPONT DISPLAYS, INC. FORAN ADVANCE WAIVER OF DOMESTIC  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DUPONT DISPLAYS, INC. FORAN ADVANCE WAIVER OF DOMESTIC DUPONT DISPLAYS, INC. FORAN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER DOE CONTRACT NO. DE-EE0001269; W(A)-09-055, CH-1520 The Petitioner, DuPont Displays, Inc. was awarded this cooperative agreement for the performance of work entitled, "Solution-Processed Small-Molecule OLED (Organic Light Emitting Diode) Luminaire for Interior Illumination." According to its response to question 2, DuPont states that the work under this agreement will significantly improve the manufacturability of an OLED lighting panel based on solution processing of small molecule OLED materials; demonstrate and evaluate the cost effectiveness of solution processing techniques using small molecule OLED materials for SSL applications; and, improve efficiencies, lifetimes, and color rendering of OLED

23

Cellulosic ethanol at last?  

Science Journals Connector (OSTI)

Cellulosic ethanol at last? 10.1126/science.345...The spigots are open at a new cellulosic ethanol plant in Emmetsburg, Iowa. PHOTO...northwest corner of Iowa? Cellulosic ethanol, in quantities that have never flowed...

Robert F. Service

2014-09-05T23:59:59.000Z

24

Assessing the distribution, habitat, and population size of the threatened Dupont's lark Chersophilus  

E-Print Network (OSTI)

North African range, as well as on its preferred habitat, population density and size. Fieldwork), with important populations believed to be present in the steppe-like habitat of North Africa (Cramp, 1988Assessing the distribution, habitat, and population size of the threatened Dupont's lark

Oñate, Juan J.

25

DuPont Displays Develops Low-Cost Method of Printing OLED Panels  

Energy.gov (U.S. Department of Energy (DOE))

DuPont Displays Inc. (DDI) has developed a novel way of printing color-tunable OLED lighting panels that keeps manufacturing costs low. The method involves processing the organic layers from solution, with most of the process steps taking place under atmospheric conditions rather than in a high vacuum. Industry-standard slot-coating methods are used in conjunction with nozzle printingin which the solutions of organic materials are continuously jetted through an array of nozzles moving at high speedallowing the light-emitting materials to be spatially patterned.

26

Approaching zero cellulose loss in cellulose nanocrystal (CNC) production: recovery and characterization of cellulosic solid residues (CSR) and CNC  

Science Journals Connector (OSTI)

This study demonstrated the potential of simultaneously recovering cellulosic solid residues (CSR) and producing cellulose nanocrystals (CNCs) by strong sulfuric acid hydrolysis to minimize cellulose loss to near...

Q. Q. Wang; J. Y. Zhu; R. S. Reiner; S. P. Verrill; U. Baxa; S. E. McNeil

2012-12-01T23:59:59.000Z

27

Cellulosic Biofuels Disappoint  

Science Journals Connector (OSTI)

Cellulosic Biofuels Disappoint ... As part of the strategy, a goal of 36 billion gallons per year (bgy) of biofuel production was mandated by a Renewable Fuel Standard (RFS2) lasting from 2008 through 2022. ...

Jerald L. Schnoor

2011-08-19T23:59:59.000Z

28

Method of saccharifying cellulose  

DOE Patents (OSTI)

A method of saccharifying cellulose by incubation with the cellulase of Clostridium thermocellum in a broth containing an efficacious amount of a reducing agent. Other incubation parameters which may be advantageously controlled to stimulate saccharification include the concentration of alkaline earth salts, pH, temperature, and duration. By the method of the invention, even native crystalline cellulose such as that found in cotton may be completely saccharified.

Johnson, Eric A. (Brookline, MA); Demain, Arnold L. (Wellesley, MA); Madia, Ashwin (Decatur, IL)

1985-09-10T23:59:59.000Z

29

Four Cellulosic Ethanol Breakthroughs  

Energy.gov (U.S. Department of Energy (DOE))

Today, the nation's first ever commercial-scale cellulosic ethanol biorefinery to use corn waste as a feedstock officially opened for business in Emmetsburg, Iowa. POET-DSMs Project LIBERTY is the second of two Energy Department-funded cellulosic ethanol biorefineries to come on line within the past year. Learn more about how the Energy Department is helping the nation reduce its dependence on foreign oil and move the clean energy economy forward.

30

Method of saccharifying cellulose  

DOE Patents (OSTI)

A method is disclosed of saccharifying cellulose by incubation with the cellulase of Clostridium thermocellum in a broth containing an efficacious amount of thiol reducing agent. Other incubation parameters which may be advantageously controlled to stimulate saccharification include the concentration of alkaline earth salts, pH, temperature, and duration. By the method of the invention, even native crystalline cellulose such as that found in cotton may be completely saccharified.

Johnson, E.A.; Demain, A.L.; Madia, A.

1983-05-13T23:59:59.000Z

31

Why Sequence Cellulose Degrading Bacteria?  

NLE Websites -- All DOE Office Websites (Extended Search)

Cellulose Degrading Bacteria? Cellulose Degrading Bacteria? One of the major DOE missions is the production of renewable fuels to reduce our dependence on foreign oil, and also to take the place of petroleum-based fuels as these resources dwindle. Biologically produced ethanol is one possible replacement for fossil fuels. Currently, ethanol is produced from corn starch, but there is much research into using lignocellulosic materials (those containing cellulose, hemicellulose, and lignin) as the raw material for ethanol production. Ethanol production from cellulose requires several steps: pretreatment with steam, acid, or ammonia; digestion of cellulose to sugars; and fermentation of sugars to ethanol. The slowest and most expensive step is the breakdown of cellulose, chemically accomplished by cellulases. The second and third

32

Microbial diversity of cellulose hydrolysis  

NLE Websites -- All DOE Office Websites (Extended Search)

871; 871; NO. OF PAGES 5 Please cite this article in press as: Wilson DB. Microbial diversity of cellulose hydrolysis, Curr Opin Microbiol (2011), doi:10.1016/j.mib.2011.04.004 Available online at www.sciencedirect.com Microbial diversity of cellulose hydrolysis David B Wilson Enzymatic hydrolysis of cellulose by microorganisms is a key step in the global carbon cycle. Despite its abundance only a small percentage of microorganisms can degrade cellulose, probably because it is present in recalcitrant cell walls. There are at least five distinct mechanisms used by different microorganisms to degrade cellulose all of which involve cellulases. Cellulolytic organisms and cellulases are extremely diverse possibly because their natural substrates, plant cell walls, are very diverse. At this time the microbial ecology of cellulose degradation in any environment is still

33

Sandia National Laboratories: cellulosic biofuels  

NLE Websites -- All DOE Office Websites (Extended Search)

cellulosic biofuels Joint BioEnergy Institute Oxime-NIMS Work Featured on the Cover of ACS Chemical Biology On July 31, 2014, in Biofuels, Biomass, Capabilities, Energy,...

34

Biofuel Development from Cellulosic Sources  

Science Journals Connector (OSTI)

Land-use changes resulting in habitat loss and habitat fragmentation can impact native wildlife species. However, cellulosic biomass feedstocks have the potential to provide habitat for...

Kimberly OKeefe; Clint J. Springer; Jonathan Grennell

2014-09-01T23:59:59.000Z

35

Louisiana: Verenium Cellulosic Ethanol Demonstration Facility...  

Energy Savers (EERE)

Louisiana: Verenium Cellulosic Ethanol Demonstration Facility Louisiana: Verenium Cellulosic Ethanol Demonstration Facility April 9, 2013 - 12:00am Addthis In 2010, Verenium...

36

Compositions and methods for increasing cellulose production  

DOE Patents (OSTI)

This disclosure relates to methods and compositions for genetically altering cellulose biosynthesis.

Yang, Zhenbiao (Riverside, CA); Karr, Stephen (Camarillo, CA)

2012-05-01T23:59:59.000Z

37

PROCESS DESIGN AND OPTIMIZATION OF CELLULOSE HYDROLYSIS  

E-Print Network (OSTI)

controlled, ethanol produced from cellulose is not currentlycellulose to sugars that are readily fermentable to ethanol.

Lindsey, R.R.

2011-01-01T23:59:59.000Z

38

Magnetic cellulose-derivative structures  

DOE Patents (OSTI)

Structures to serve as selective magnetic sorbents are formed by dissolving a cellulose derivative such as cellulose triacetate in a solvent containing magnetic particles. The resulting solution is sprayed as a fine mist into a chamber containing a liquid coagulant such as n-hexane in which the cellulose derivative is insoluble but in which the coagulant is soluble or miscible. On contact with the coagulant, the mist forms free-flowing porous magnetic microspheric structures. These structures act as containers for the ion-selective or organic-selective sorption agent of choice. Some sorption agents can be incorporated during the manufacture of the structure. 3 figs.

Walsh, M.A.; Morris, R.S.

1986-09-16T23:59:59.000Z

39

Magnetic cellulose-derivative structures  

DOE Patents (OSTI)

Structures to serve as selective magnetic sorbents are formed by dissolving a cellulose derivative such as cellulose triacetate in a solvent containing magnetic particles. The resulting solution is sprayed as a fine mist into a chamber containing a liquid coagulant such as n-hexane in which the cellulose derivative is insoluble but in which the coagulant is soluble or miscible. On contact with the coagulant, the mist forms free-flowing porous magnetic microspheric structures. These structures act as containers for the ion-selective or organic-selective sorption agent of choice. Some sorbtion agents can be incorporated during the manufacture of the structure.

Walsh, Myles A. (Falmouth, MA); Morris, Robert S. (Fairhaven, MA)

1986-09-16T23:59:59.000Z

40

Breaking the Biological Barriers to Cellulosic Ethanol, June...  

Energy Savers (EERE)

Breaking the Biological Barriers to Cellulosic Ethanol, June 2006 Breaking the Biological Barriers to Cellulosic Ethanol, June 2006 Breaking the Biological Barriers to Cellulosic...

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


41

EFFECT OF NITROGEN OXIDE PRETREATMENTS ON ENZYMATIC HYDROLYSIS OF CELLULOSE  

E-Print Network (OSTI)

Bioconversion of Cellulose and Production of Ethanol," LBL-of Cellulose and the Production of Ethanol," LBL-6859,the cellulose is a major obstacle to hydrolysis. Ethanol The

Borrevik, R.K.

2011-01-01T23:59:59.000Z

42

Energy Economy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

June 11, 2010 June 11, 2010 Crockett has seen Chattanooga change dramatically in the last 30 years. The Office of Sustainability will build on the city's environmental success. | Photo Courtesy of Flickr user mjasonprickett David Crockett, Chattanooga's Green Frontiersman David Crockett is no stranger to Chattanooga, Tennessee. A three-term city councilman, former chairman of the council and President of the Chattanooga Institute for Sustainability, he knows his way around the city government. June 11, 2010 DuPont Danisco Cellulosic Ethanol (DDCE) opened a new biorefinery in Vonore, Tenn., last year. | Photo courtesy of DDCE Making Biofuel From Corncobs and Switchgrass in Rural America Energy crops and agricultural residue, like corncobs and stover, are becoming part of rural America's energy future. Unlike the more common

43

Cellulosic Biofuels and the Road to Energy Security  

Science Journals Connector (OSTI)

Cellulosic Biofuels and the Road to Energy Security ... And we badly need some operating commercial scale cellulosic biofuel plants. ...

Bruce E. Dale

2011-11-07T23:59:59.000Z

44

Cellulose hydrogels prepared from micron-sized bamboo cellulose fibers  

Science Journals Connector (OSTI)

Abstract We demonstrated for the first time that dimensionally stable hydrogels could be obtained from bamboo pulp fibers through dialysis against distilled water followed by a short time of ultrasonic treatment. Micron-sized short fibers rather than cellulose nanofibrils constituted the majority of fibers in the hydrogels. During the pulping process with HNO3 and KClO3, carboxylic groups could be introduced to cellulose due to the mild oxidation of hydroxyl groups. When presented in aqueous NaOH, the carboxylic groups could be converted into their sodium salt form. The subsequent dialysis treatment against water made the negatively charged COO? groups extensively exposed. The negatively charged cellulose fibers could induce considerable electrostatic repulsion between them, which was discovered to govern the formation of hydrogels. In addition, it was revealed that homogeneous hydrogels could be formed when the pH was at 7, 9 and 11. However, when salt was added, no dimensionally stable hydrogel was obtained.

Xiaofang Zhang; Yaru Wang; Canhui Lu; Wei Zhang

2014-01-01T23:59:59.000Z

45

Ethanol from Cellulosic Biomass [and Discussion  

Science Journals Connector (OSTI)

26 January 1983 research-article Ethanol from Cellulosic Biomass [and Discussion...of cellulosic biomass to liquid fuel, ethanol. Within the scope of this objective...maximize the conversion efficiency of ethanol production from biomass. This can be...

1983-01-01T23:59:59.000Z

46

Ethanol from Cellulosic Biomass [and Discussion  

Science Journals Connector (OSTI)

...research-article Ethanol from Cellulosic Biomass [and Discussion] D. I. C. Wang G...microbiological conversion of cellulosic biomass to liquid fuel, ethanol. Within the...efficiency of ethanol production from biomass. This can be achieved through the effective...

1983-01-01T23:59:59.000Z

47

Cellulosic ethanol | Open Energy Information  

Open Energy Info (EERE)

Cellulosic ethanol Cellulosic ethanol Jump to: navigation, search Cellethanol.jpg Cellulosic ethanol is identical to first generation bio ethanol except that it can be derived from agricultural residues, other lignocellulosic raw materials or energy crops. These lignocellulosic raw materials are more widely available than the standard material used for ethanol. They are also considered to be more sustainable, however they need to be broken down (hydrolysed) into simple sugars prior to distillation, a much more complex process than the first generation bioethanol. It first must go through pretreatment,hydrolysis then a conversion. Research since the 1970s and large investments are being made in the US and Europe to speed up development of this route to bioethanol. Biomass refineries like Inbicon in Denmark are producing

48

Consolidated Bio-Processing of Cellulosic Biomass for Efficient Biofuel Production Using Yeast Consortium  

E-Print Network (OSTI)

performance, ethanol and cellulose hydrolysis measurementsSimultaneous ethanol fermentation and cellulose hydrolysisand fermentation of cellulose to ethanol. Appl. Environ.

Goyal, Garima

2011-01-01T23:59:59.000Z

49

Purification of aqueous cellulose ethers  

SciTech Connect

Manufacture of cellulose ethers usually involves high amounts of salt by-products. For application of the product, salt must be removed. In this work, we have studied the injection of high-pressure CO{sub 2} into an aqueous polymer-salt solution; we find that upon addition of isopropanol in addition to CO{sub 2}, the solution separates into two phases. One phase is rich in polymer and water, and the other phase contains mostly isopropanol, water and CO{sub 2}. The salt distributes between the two phases, thereby offering interesting possibilities for development of a new purification process for water-soluble polymers. This work presents experimental phase-equilibrium data for hydroxyethyl cellulose and sodium carboxymethyl cellulose with sodium acetate and potassium sulfate, respectively, in the region 40{degree}C and 30 to 80 bar. Based on these data, we suggest a process for the manufacture and purification of water-soluble cellulose ethers. 15 refs., 14 figs., 9 tabs.

Bartscherer, K.A.; de Pablo, J.J.; Bonnin, M.C.; Prausnitz, J.M.

1990-07-01T23:59:59.000Z

50

Enzymatic Hydrolysis of Cellulosic Biomass  

SciTech Connect

Biological conversion of cellulosic biomass to fuels and chemicals offers the high yields to products vital to economic success and the potential for very low costs. Enzymatic hydrolysis that converts lignocellulosic biomass to fermentable sugars may be the most complex step in this process due to substrate-related and enzyme-related effects and their interactions. Although enzymatic hydrolysis offers the potential for higher yields, higher selectivity, lower energy costs, and milder operating conditions than chemical processes, the mechanism of enzymatic hydrolysis and the relationship between the substrate structure and function of various glycosyl hydrolase components are not well understood. Consequently, limited success has been realized in maximizing sugar yields at very low cost. This review highlights literature on the impact of key substrate and enzyme features that influence performance to better understand fundamental strategies to advance enzymatic hydrolysis of cellulosic biomass for biological conversion to fuels and chemicals. Topics are summarized from a practical point of view including characteristics of cellulose (e.g., crystallinity, degree of polymerization, and accessible surface area) and soluble and insoluble biomass components (e.g., oligomeric xylan, lignin, etc.) released in pretreatment, and their effects on the effectiveness of enzymatic hydrolysis. We further discuss the diversity, stability, and activity of individual enzymes and their synergistic effects in deconstructing complex lignocellulosic biomass. Advanced technologies to discover and characterize novel enzymes and to improve enzyme characteristics by mutagenesis, post-translational modification, and over-expression of selected enzymes and modifications in lignocellulosic biomass are also discussed.

Yang, Bin; Dai, Ziyu; Ding, Shi-You; Wyman, Charles E.

2011-08-22T23:59:59.000Z

51

Catalytic transformation of cellulose into platform chemicals  

Science Journals Connector (OSTI)

Conversion of biomass to renewable and valuable chemicals has attracted global interest in order to build up sustainable societies. Cellulose is the most abundant and non-food biomass; however, the low reactivity of cellulose has prevented its use in chemical industry except for the paper manufacturing. The heterogeneous catalysis for the conversion of cellulose has been expected to overcome this issue, because various types of heterogeneous catalysts can be designed and applied in a wide range of reaction conditions. Furthermore, solid catalysts are easily recovered and reused. In this review article, we show the present situation and perspective of heterogeneous catalysis for the transformation of cellulose into useful platform chemicals.

Mizuho Yabushita; Hirokazu Kobayashi; Atsushi Fukuoka

2014-01-01T23:59:59.000Z

52

Accelerated Cellulose Depolymerization Catalyzed by Paired Metal...  

NLE Websites -- All DOE Office Websites (Extended Search)

Depolymerization Catalyzed by Paired Metal Chlorides in Ionic Liquid Solvent. Accelerated Cellulose Depolymerization Catalyzed by Paired Metal Chlorides in Ionic Liquid...

53

Inverse Temperature-Dependent Pathway of Cellulose Decrystallization...  

NLE Websites -- All DOE Office Websites (Extended Search)

unchanged after the dimer diffused into the cellulose matrix. On the other hand, the rate of TFA penetration into the cellulose matrix was greatly retarded at higher...

54

Advancing Cellulosic Ethanol for Large Scale Sustainable Transportation  

E-Print Network (OSTI)

processes for cellulosic biomass conversion are commercial and advances in biomass conversion technologies forenhance conversion and extend impact of cellulosic biomass

Wyman, C

2007-01-01T23:59:59.000Z

55

Methods for enhancing the degradation or conversion of cellulosic material  

DOE Patents (OSTI)

The present invention relates to methods for degrading or converting a cellulosic material and for producing a substance from a cellulosic material.

Harris, Paul (Carnation, WA) Rey, Michael (Davis, CA); Ding, Hanshu (Davis, CA)

2009-10-27T23:59:59.000Z

56

Single-step conversion of cellulose to 5-hydroxymethylfurfural...  

NLE Websites -- All DOE Office Websites (Extended Search)

Single-step conversion of cellulose to 5-hydroxymethylfurfural (HMF), a versatileplatform chemical. Single-step conversion of cellulose to 5-hydroxymethylfurfural (HMF), a...

57

Advancing Cellulosic Ethanol for Large Scale Sustainable Transportation  

E-Print Network (OSTI)

of glucose from cellulose Projected Cellulosic Ethanol CostsEthanol Research Improve the understanding of biomass fractionation, pretreatment, and cellulosecellulose to glucose, and ferment all sugars Ethanol

Wyman, C

2007-01-01T23:59:59.000Z

58

Alternative Fuels Data Center: Cellulosic Ethanol Research and Development  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cellulosic Ethanol Cellulosic Ethanol Research and Development Tax Credit to someone by E-mail Share Alternative Fuels Data Center: Cellulosic Ethanol Research and Development Tax Credit on Facebook Tweet about Alternative Fuels Data Center: Cellulosic Ethanol Research and Development Tax Credit on Twitter Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Research and Development Tax Credit on Google Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Research and Development Tax Credit on Delicious Rank Alternative Fuels Data Center: Cellulosic Ethanol Research and Development Tax Credit on Digg Find More places to share Alternative Fuels Data Center: Cellulosic Ethanol Research and Development Tax Credit on AddThis.com... More in this section... Federal State

59

Project LIBERTY Biorefinery Starts Cellulosic Ethanol Production  

Office of Energy Efficiency and Renewable Energy (EERE)

Project LIBERTY, the nations first commercial-scale cellulosic ethanol plant to use corn waste as a feedstock, announced the start of production today. Once operating at full, commercial-scale, the biorefinery in Emmetsburg, Iowa will produce 25 million gallons of cellulosic ethanol per year - enough to avoid approximately 210,000 tons of CO2 emissions annually.

60

Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cellulosic Biofuel Tax Cellulosic Biofuel Tax Exemption to someone by E-mail Share Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption on Facebook Tweet about Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption on Twitter Bookmark Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption on Google Bookmark Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption on Delicious Rank Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption on Digg Find More places to share Alternative Fuels Data Center: Cellulosic Biofuel Tax Exemption on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Cellulosic Biofuel Tax Exemption Fuel consisting of cellulosic biofuel or a blend of gasoline and cellulosic

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


61

Definition: Cellulosic ethanol | Open Energy Information  

Open Energy Info (EERE)

Dictionary.png Dictionary.png Cellulosic ethanol An advanced type of biofuel that is produced by breaking down and using the cellulose compound found in trees and grasses.[1] View on Wikipedia Wikipedia Definition Cellulosic ethanol is a biofuel produced from wood, grasses, or the inedible parts of plants. It is a type of biofuel produced from lignocellulose, a structural material that comprises much of the mass of plants. Lignocellulose is composed mainly of cellulose, hemicellulose and lignin. Corn stover, Panicum virgatum (switchgrass), Miscanthus grass species, wood chips and the byproducts of lawn and tree maintenance are some of the more popular cellulosic materials for ethanol production. Production of ethanol from lignocellulose has the advantage of abundant and

62

Cellulose Pyrolysis A Literature, Review.  

Office of Scientific and Technical Information (OSTI)

Reaction Mechanisms in Reaction Mechanisms in Cellulose Pyrolysis A Literature, Review. - - pacific N o r t h ~ ~ ~ , baboratwies I - - bCL-T-,,;, .,- , . . . I ' I . - " 1- jl,! # . .' , . - --h 1 , i b - . "I 1.- . . ., .. ' N O T - I C E , , If PACIF tC NORTHWLST U B O R A T ~ R Y .4peiild by B h m E far c h t ,EP4ERGY RESEARCH AN0 PEVELOPMEM ADMtNlSTRAnQN U m h Contract Z Y - ~ ~ - C ~ & I # D w n : m a , m & l 3 Q j l m OIdrfrn m y - !*? 1SI71Y9 1 - m-u3 2s-m .**-2?3 ,Sbca lcPa w m *a0 Iffy &a It- w-% w w @.a SlO.0 m u 6 REACTION MECHANISMS IN CELLULOSE PYROLYSIS A LITERATURE REVIEW by Peter M. Molton T.F. Demmitt Chemical Technology Department BATTELLE Pacific Northwest Laboratories Richland, Washington 99352 CONTENTS . . . . . . . . . . . . . . L I S T OF F I G U R E S iii L I S T O F T A B L E S . . . . . . . . . . . . . . i v . . . . . . . . . . . . . I . INTRODUCTION 1

63

Effects of Dilute Acid Pretreatment on Cellulose DP and the Relationship Between DP Reduction and Cellulose Digestibility  

SciTech Connect

The degree of polymerization(DP) of cellulose is considered to be one of the most important properties affecting the enzymatic hydrolysis of cellulose. Various pure cellulosic and biomass materials have been used in a study of the effect of dilute acid treatment on cellulose DP. A substantial reduction in DP was found for all pure cellulosic materials studied even at conditions that would be considered relatively mild for pretreatment. The effect of dilute acid pretreatment on cellulose DP in biomass samples was also investigated. Corn stover pretreated with dilute acid under the most optimal conditions contained cellulose with a DPw in the range of 1600{approx}3500, which is much higher than the level-off DP(DPw 150{approx}300) obtained with pure celluloses. The effect of DP reduction on the saccharification of celluloses was also studied. From this study it does not appear that cellulose DP is a main factor affecting cellulose saccharification.

Wang, W.; Chen, X.; Tucker, M.; Himmel, M. E.; Johnson, D. K.

2012-01-01T23:59:59.000Z

64

Combined inactivation of the Clostridium cellulolyticum lactate and malate dehydrogenase genes substantially increases ethanol yield from cellulose and switchgrass fermentations  

E-Print Network (OSTI)

Keywords: Cellulose, ethanol, biofuel, Clostridiumincreases ethanol yield from cellulose and switchgrassincreases ethanol yield from cellulose and switchgrass

2012-01-01T23:59:59.000Z

65

Cellulose- and Xylan-Degrading Thermophilic Anaerobic Bacteria from Biocompost  

Science Journals Connector (OSTI)

...to utilize both cellulose and xylan, including strains of Clostridium...species reported to utilize xylan, and the rate of cellulose...able to degrade cellulose, xylan, and their mixture with the...locations 40 to 50 cm below the surface and temperatures ranging from...

M. V. Sizova; J. A. Izquierdo; N. S. Panikov; L. R. Lynd

2011-02-11T23:59:59.000Z

66

Production of permeable cellulose triacetate membranes  

DOE Patents (OSTI)

A phase inversion process for the preparation of cellulose triacetate (CTA) and regenerated cellulose membranes is disclosed. Such membranes are useful as supports for liquid membranes in facilitated transport processes, as microfiltration membranes, as dialysis or ultrafiltration membranes, and for the preparation of ion-selective electrodes. The process comprises the steps of preparing a casting solution of CTA in a solvent comprising a mixture of cyclohexanone and methylene chloride, casting a film from the casting solution, and immersing the cast film in a methanol bath. The resulting CTA membrane may then be hydrolyzed to regenerated cellulose using conventional techniques.

Johnson, B.M.

1986-12-23T23:59:59.000Z

67

Production of permeable cellulose triacetate membranes  

DOE Patents (OSTI)

A phase inversion process for the preparation of cellulose triacetate (CTA) and regenerated cellulose membranes is disclosed. Such membranes are useful as supports for liquid membranes in facilitated transport processes, as microfiltration membranes, as dialysis or ultrafiltration membranes, and for the preparation of ion-selective electrodes. The process comprises the steps of preparing a casting solution of CTA in a solvent comprising a mixture of cyclohexanone and methylene chloride, casting a film from the casting solution, and immersing the cast film in a methanol bath. The resulting CTA membrane may then be hydrolyzed to regenerated cellulose using conventional techniques.

Johnson, Bruce M. (Bend, OR)

1986-01-01T23:59:59.000Z

68

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL underBioconversion of Cellulose and Production of Ethanol, LBL-of Cellulose by Coupling with Ethanol Fermentation (with

Wilke, C.R.

2011-01-01T23:59:59.000Z

69

PILOT PLANT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

of Cellulose by Coupling with Ethanol Fermentation." Reportand Continuous Cellulose Hydrolysis with and without EthanolLindsey. CELLULOSE BIOCONVERSION TO SUGARS AND ETHANOL

Wilke, C.R.

2010-01-01T23:59:59.000Z

70

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

of Cellulose by Coupling with Ethanol Fermentation." ReportOf Cellulose And Production Of Ethanol I Charles R. WilkeBIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL under

Wilke, C.R.

2011-01-01T23:59:59.000Z

71

PROCESS DEVELOPMENT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL CharlesBIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL Charlesof Cellulose and Production of Ethanol," Lawrence Berkeley

Wilke, Charles R.

2014-01-01T23:59:59.000Z

72

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

Bioconversion of Cellulose and Production of Ethanol." (JuneBIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL CharlesBIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL Charles

Wilke, Charles R.

2012-01-01T23:59:59.000Z

73

Cellulosic biomass could help meet Californias transportation fuel needs  

E-Print Network (OSTI)

Ethanol-production from cellobiose, amorphous cellulose, andsugars into ethanol. hemicellulose and cellulose by hydro-ethanol has been improving the technology for hydro- lysis of recalcitrant cellulose,

Wyman, Charles E.; Yang, Bin

2009-01-01T23:59:59.000Z

74

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

with either enzyme or cellulose, III, ETHANOL FERMENTATIONof Cellulose and Production of Ethanol," Progress Report,of Cellulose and Production of Ethanol," Progress Report,

Wilke, Charles R.

2011-01-01T23:59:59.000Z

75

The Potential of Cellulosic Ethanol Production from Municipal Solid Waste: A Technical and Economic Evaluation  

E-Print Network (OSTI)

to fuel ethanol because it not only contains cellulose andCellulose conversion, % Co-Fermentation Glucose-ethanolamount of cellulose, can be used as fuel ethanol feedstocks

Shi, Jian; Ebrik, Mirvat; Yang, Bin; Wyman, Charles E.

2009-01-01T23:59:59.000Z

76

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL underof Cellulose by Coupling with Ethanol Fermentation, withCandidate. CELLULOSE BIOCONVERSION TO SUGARS AND ETHANOL

Wilke, C.R.

2011-01-01T23:59:59.000Z

77

High-Temperature Enzymatic Breakdown of Cellulose  

Science Journals Connector (OSTI)

...Materiais, Campinas/SP, Brazil. Supplemental material...friends at the National Renewable Energy Laboratory (NREL) for...funded by Department of Energy awards 06103-OKL and...Cellulose is an abundant and renewable biopolymer that can be...

Hongliang Wang; Fabio Squina; Fernando Segato; Andrew Mort; David Lee; Kirk Pappan; Rolf Prade

2011-06-17T23:59:59.000Z

78

Flocculation of microfibrillated cellulose in shear flow  

Science Journals Connector (OSTI)

In this work, the rheological properties of microfibrillated cellulose suspensions under stepped flow and constant shear were studied using a combination of rotational dynamic rheometer and digital imaging. Du...

Anni Karppinen; Tapio Saarinen; Juha Salmela; Antti Laukkanen

2012-12-01T23:59:59.000Z

79

Cellulose biosynthesis and function in bacteria.  

Science Journals Connector (OSTI)

...for obtaining enhanced or reduced expres- sion by genetic engineering; as mentioned above, the genes for cellulose synthesis reside...food stabilizers (102a), and acoustic diaphragms for audio instruments (80a). Eventually, the wide availability of...

P Ross; R Mayer; M Benziman

1991-03-01T23:59:59.000Z

80

Time-resolved X-ray diffraction microprobe studies of the conversion of cellulose I to ethylenediamine-cellulose I  

SciTech Connect

Structural changes during the treatment of films of highly crystalline microfibers of Cladophora cellulose with ethylenediamine (EDA) have been studied by time-resolved X-ray microprobe diffraction methods. As EDA penetrates the sample and converts cellulose I to EDA-cellulose I, the measured profile widths of reflections reveal changes in the shapes and average dimensions of cellulose I and EDA-cellulose I crystals. The (200) direction of cellulose I is most resistant to EDA penetration, with EDA penetrating most effectively at the hydrophilic edges of the hydrogen bonded sheets of cellulose chains. Most of the cellulose chains in the initial crystals of cellulose I are incorporated into crystals of EDA-cellulose I. The size of the emerging EDA-cellulose I crystals is limited to about half of their size in cellulose I, most likely due to strains introduced by the penetration of EDA molecules. There is no evidence of any gradual structural transition from cellulose I to EDA-cellulose I involving a continuously changing intermediate phase. Rather, the results point to a rapid transition to EDA-cellulose I in regions of the microfibrils that have been penetrated by EDA.

Nishiyama, Yoshiharu; Wada, Masahisa; Hanson, B. Leif; Langan, Paul (Toledo); (U of Tokyo); (CNRS-CRMD); (LANL)

2010-08-03T23:59:59.000Z

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


81

Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cellulosic Ethanol Cellulosic Ethanol Investment Tax Credit to someone by E-mail Share Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Facebook Tweet about Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Twitter Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Google Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Delicious Rank Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Digg Find More places to share Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Cellulosic Ethanol Investment Tax Credit A qualified investor may receive a tax credit of up to 40% of an

82

Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cellulosic Ethanol Cellulosic Ethanol Investment Tax Credit to someone by E-mail Share Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Facebook Tweet about Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Twitter Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Google Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Delicious Rank Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on Digg Find More places to share Alternative Fuels Data Center: Cellulosic Ethanol Investment Tax Credit on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Cellulosic Ethanol Investment Tax Credit A tax credit is available for investments in a qualified small business

83

Alternative Fuels Data Center: Cellulosic Ethanol Production Financing  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cellulosic Ethanol Cellulosic Ethanol Production Financing to someone by E-mail Share Alternative Fuels Data Center: Cellulosic Ethanol Production Financing on Facebook Tweet about Alternative Fuels Data Center: Cellulosic Ethanol Production Financing on Twitter Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Production Financing on Google Bookmark Alternative Fuels Data Center: Cellulosic Ethanol Production Financing on Delicious Rank Alternative Fuels Data Center: Cellulosic Ethanol Production Financing on Digg Find More places to share Alternative Fuels Data Center: Cellulosic Ethanol Production Financing on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Cellulosic Ethanol Production Financing The Kansas Development Finance Authority may issue revenue bonds to cover

84

New Insights into Hydrogen Bonding and Stacking Interactions in Cellulose  

SciTech Connect

In this quantum chemical study, we explore hydrogen bonding (H-bonding) and stacking interactions in different crystalline cellulose allomorphs, namely cellulose I and cellulose IIII. We consider a model system representing a cellulose crystalline core, made from six cellobiose units arranged in three layers with two chains per layer. We calculate the contributions of intrasheet and intersheet interactions to the structure and stability in both cellulose I and cellulose IIII crystalline cores. Reference structures for this study were generated from molecular dynamics simulations of water-solvated cellulose I and IIII fibrils. A systematic analysis of various conformations describing different mutual orientations of cellobiose units is performed using the hybrid density functional theory (DFT) with the M06-2X with 6-31+G (d, p) basis sets. We dissect the nature of the forces that stabilize the cellulose I and cellulose IIII crystalline cores and quantify the relative strength of H-bonding and stacking interactions. Our calculations demonstrate that individual H-bonding interactions are stronger in cellulose I than in cellulose IIII. We also observe a significant contribution from cooperative stacking interactions to the stabilization of cellulose I . In addition, the theory of atoms-in-molecules (AIM) has been employed to characterize and quantify these intermolecular interactions. AIM analyses highlight the role of nonconventional CH O H-bonding in the cellulose assemblies. Finally, we calculate molecular electrostatic potential maps for the cellulose allomorphs that capture the differences in chemical reactivity of the systems considered in our study.

Langan, Paul [ORNL

2011-01-01T23:59:59.000Z

85

MICRORGANISMS CONCERNED IN THE DECOMPOSITION OF CELLULOSES IN THE SOIL  

Science Journals Connector (OSTI)

...1886 ttber garung der Cellulose mit Bildung von Methan und Kohlensiiure. Ztshr. physiol. Chem., 10...OMELIANSKI, W. 1904(a) Ueber die Trennung der Wasserstoff- und Methan- garung der Cellulose. Centrbl. Bakt., 2 Abt...

Selman A. Waksman; C. E. Skinner

1926-07-01T23:59:59.000Z

86

Cellulosic Biofuels: Expert Views on Prospects for Advancement: Supplementary Material  

E-Print Network (OSTI)

Cellulosic Biofuels: Expert Views on Prospects for Advancement: Supplementary Material Erin Baker Keywords: Biofuels; Technology R&D; Uncertainty; Environmental policy 2 #12;1 Introduction This paper contains supplementary material for "Cellulosic Biofuels: Expert Views on Prospects for Advancement

Massachusetts at Amherst, University of

87

Electric Field Alignment of Cellulose Based-Polymer Nanocomposites  

E-Print Network (OSTI)

Cellulose whiskers (CWs) obtained from naturally occuring cellulose are nano-inclusions which show a lot of promise as mechanical reinforcements in polymers. Typically, a relatively high content is added to realize improvement in effective...

Kalidindi, Sanjay Varma

2012-07-16T23:59:59.000Z

88

Simulation studies of the insolubility of cellulose  

NLE Websites -- All DOE Office Websites (Extended Search)

Simulation Simulation studies of the insolubility of cellulose Malin Bergenstråhle a , Jakob Wohlert a, , Michael E. Himmel b , John W. Brady a, * a Department of Food Science, Cornell University, Ithaca, NY 14853, United States b National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401-3393, United States a r t i c l e i n f o Article history: Received 4 February 2010 Received in revised form 5 June 2010 Accepted 25 June 2010 Available online 6 July 2010 Keywords: Cellulase Cellobiohydrolase I Cellulose Computer modeling Molecular dynamics a b s t r a c t Molecular dynamics simulations have been used to calculate the potentials of mean force for separating short cellooligomers in aqueous solution as a means of estimating the contributions of hydrophobic stacking and hydrogen bonding to the insolubility of crystalline cellulose. A series of four potential of mean force (pmf) calculations

89

Why sequence cellulose degrading fungus Amanita thiersii?  

NLE Websites -- All DOE Office Websites (Extended Search)

sequence cellulose degrading fungus Amanita thiersii? sequence cellulose degrading fungus Amanita thiersii? Amanita thiersii is a white, sticky mushroom that obtains its carbon by decomposing grasses, playing a role in the terrestrial carbon cycle. The fungus is commonly found in grasslands throughout the central United States and grows in grassy areas away from trees, often seen on lawns after the rain. By sequencing A. thiersii's genome, researchers hope increase the list of fungi that might provide enzymes that can be used to commercialize the production of cellulosic biofuel, which falls in with the U.S. Department of Energy's mission to develop clean energy, by potentially offering a more cost-effective method of breaking down lignocellulose in plant cell walls. Because the fungus is found in regions where the biomass is high in

90

BSA Treatment to Enhance Enzymatic Hydrolysis of Cellulose in Lignin  

E-Print Network (OSTI)

BSA Treatment to Enhance Enzymatic Hydrolysis of Cellulose in Lignin Containing Substrates Bin Yang cellulose and solids containing 56% cellulose and 28% lignin from dilute sulfuric acid pretreatment of corn of cellulase and particularly beta-glucosidase on lignin. Of particular note, BSA treatment of pretreated corn

California at Riverside, University of

91

Biofuel Supply Chain Infrastructure Optimizing the Evolution of Cellulosic Biofuel  

E-Print Network (OSTI)

Biofuel Supply Chain Infrastructure Optimizing the Evolution of Cellulosic Biofuel Center infrastructure. Cellulosic-based ad- vanced biofuel has a target of 21 billion gallons by 2022 and requires into a national economic model of biofuel sustainability. Cellulosic biomass relocates the demand

92

Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials  

DOE Patents (OSTI)

A method for enzymatically separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials. The cellulosic material, such as newsprint, is introduced into a first chamber containing a plastic canvas basket. This first chamber is in fluid communication, via plastic tubing, with a second chamber containing cellobiase beads in a plastic canvas basket. Cellulase is then introduced into the first chamber. A programmable pump then controls the flow rate between the two chambers. The action of cellulase and stirring in the first chamber results in the production of a slurry of newsprint pulp in the first chamber. This slurry contains non-inked fibers, inked fibers, and some cellobiose. The inked fibers and cellobiose flow from the first chamber to the second chamber, whereas the non-inked fibers remain in the first chamber because they are too large to pass through the pores of the plastic canvas basket. The resulting non-inked and inked fibers are then recovered. 6 figs.

Woodward, J.

1998-12-01T23:59:59.000Z

93

Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials  

DOE Patents (OSTI)

A method for enzymatically separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials. The cellulosic material, such as newsprint, is introduced into a first chamber containing a plastic canvas basket. This first chamber is in fluid communication, via plastic tubing, with a second chamber containing cellobiase beads in a plastic canvas basket. Cellulase is then introduced into the first chamber. A programmable pump then controls the flow rate between the two chambers. The action of cellulase and stirring in the first chamber results in the production of a slurry of newsprint pulp in the first chamber. This slurry contains non-inked fibers, inked fibers, and some cellobiose. The inked fibers and cellobiose flow from the first chamber to the second chamber, whereas the non-inked fibers remain in the first chamber because they are too large to pass through the pores of the plastic canvas basket. The resulting non-inked and inked fibers are then recovered.

Woodward, Jonathan (Kingston, TN)

1998-01-01T23:59:59.000Z

94

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...Microbiology ARTICLE REVIEWS Microbial Cellulose...utilization in natural environments is further enhanced...and comprehensive reviews address this large...and the research literature primarily as an...process engineering literature to refer to a process...a comprehensive review of the pretreatment...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

95

Thermal degradation of cellulose in alkali  

SciTech Connect

Biomass in an alkaline aqueous slurry can be liquefied by heat and pressure. Understanding the mechanisms of biomass liquefaction to improve the efficiency of converting biomass to useful products, particularly chemicals and synthetic fuels is discussed. To study the chemical mechanisms of this process, pure cellulose, the main component of biomass, was liquefied. The 78 cellulose liquefaction products that were identified by gas chromatography/mass spectrometry include polyols, furans, ketones, hydrocarbons, and aromatic compounds. Polyols may be formed by hydrogenolytic cleavage. Furans an cyclic ketones may be cyclization products of dicarbonyl intermediates formed by aldol condensation of small initial degradation products such as acetone and acrolein. Several of these small carbonyl compounds were used as model compounds to test proposed mechanisms for furans and cyclic ketones and obtained products supporting five of the mechanisms. For the best case of 26 cellulose liquefaction experiments, 34% of the initial mass of the cellulose was converted to acetone-soluble oil with a heat of combustion of 14,000 Btu/lb.

Miller, R.K.; Molton, P.M.; Russell, J.A.

1980-12-01T23:59:59.000Z

96

Biochemistry of Cellulose and Related Polysaccharides  

Science Journals Connector (OSTI)

... cereal grains are important in the germination process3. Thus oat glucan is located on the surface of the kernel, and during germination, it has been suggested, it is dissolved ... cellulose arise by resynthesis of fragmented glucose molecules. Similar experiments have been extended to the xylan of the wheat plant by Altermatt and Neish10. The results suggest that the xylose ...

B. A. STONE

1958-09-13T23:59:59.000Z

97

Cellulose-Bound Magnesium Diboride Superconductivity  

E-Print Network (OSTI)

Cellulose-Bound Magnesium Diboride Superconductivity Y.L. Lin and M.O. Pekguleryuz Department Canada Abstract--Two-phase superconductor tapes were produced by blending high purity magnesium diboride junctions. I. INTRODUCTION Magnesium diboride was found to be superconducting in 2001 by Nagamatsu et al. [1

Ryan, Dominic

98

Industrial hygiene walk-through survey report of E. I. Dupont de Nemours and Company, Inc. , Chocolate Bayou Plant, Alvin, Texas  

SciTech Connect

A walkthrough survey of EI duPont deNemours and Company, Incorporated, Alvin, Texas was conducted in November, 1984. The purpose of the survey was to obtain information on the 1,3-butadiene monomer manufacturing process and the potential for exposure. The facility manufactured a crude product stream containing 1,3-butadiene as a coproduct of its ethylene process. The crude was refined to a 99.5% 1,3-butadiene product. The refining process occurred in a closed system, tightly maintained for economic, fire, and health-hazard reasons. The product was transferred by way of a pipeline to storage spheres for later transport off site. The facility used an open-loop cylinder (bomb) technique for quality control sampling. All pumps were equipped with single mechanical seals, which were in the process of being replaced by tandem seals. Since 1962, the facility had experienced process changes and three changes of ownership. Because of these changes, records from previous owners of industrial hygiene monitoring were not available. Job titles identified as having potential exposure were processors, wage employee supervisors, production engineers, and laboratory technicians. The author concludes that a closed-loop manual quality-control sampling system should be installed to reduce exposure from this source.

Fajen, J.M.

1985-05-01T23:59:59.000Z

99

PILOT PLANT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL. REPORT OF WORK PROGRESS, JUNE 30, 1977  

E-Print Network (OSTI)

Bioconversion of Cellulose to Ethanol" to the Professionaland produce ethanol directly from cellulose. The methodof Cellulose by Coupling with Ethanol Fermentation." ,.l

Wilke, C.R.

2011-01-01T23:59:59.000Z

100

Simultaneous cell growth and ethanol production from cellulose by an engineered yeast consortium displaying a functional mini-cellulosome  

E-Print Network (OSTI)

cell growth and ethanol production from cellulose by anKeywords: cellulose, cellulosome, ethanol, yeast,growth and ethanol production from cellulose. However,

Goyal, Garima; Tsai, Shen-Long; Madan, Bhawna; DaSilva, Nancy A; Chen, Wilfred

2011-01-01T23:59:59.000Z

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


101

Cellulosic Biofuels: Importance, Recalcitrance, and Pretreatment  

NLE Websites -- All DOE Office Websites (Extended Search)

Cellulosic Cellulosic Biofuels: Importance, Recalcitrance, and Pretreatment Lee Lynd 1,2 and Mark Laser 1 1 Thayer School of Engineering, Dartmouth College, Hanover, USA 2 BioEnergy Science Center, Oak Ridge, USA 2.1 Our Place in History The two most profound societal transformations in history have been spawned by radical shifts in human- kind's use of natural resources. The agricultural revolution, which spanned about two millennia beginning around 4000 BC, saw hunter-gatherer societies subsisting on wild plants and animals being largely dis- placed by those cultivating the land to produce crops and domesticated livestock. The industrial revolution followed, beginning around 1700 and lasting roughly two hundred years, during which time preindustrial agricultural societies gave way to those harnessing precious metals and fossil energy to develop sophisti- cated economies centered

102

Review: Enzymatic Hydrolysis of Cellulosic Biomass  

SciTech Connect

Biological conversion of cellulosic biomass to fuels and chemicals offers the high yields to products vital to economic success and the potential for very low costs. Enzymatic hydrolysis that converts lignocellulosic biomass to fermentable sugars may be the most complex step in this process due to substrate-related and enzyme-related effects and their interactions. Although enzymatic hydrolysis offers the potential for higher yields, higher selectivity, lower energy costs, and milder operating conditions than chemical processes, the mechanism of enzymatic hydrolysis and the relationship between the substrate structure and function of various glycosyl hydrolase components are not well understood. Consequently, limited success has been realized in maximizing sugar yields at very low cost. This review highlights literature on the impact of key substrate and enzyme features that influence performance to better understand fundamental strategies to advance enzymatic hydrolysis of cellulosic biomass for biological conversion to fuels and chemicals. Topics are summarized from a practical point of view including characteristics of cellulose (e.g., crystallinity, degree of polymerization, and accessible surface area) and soluble and insoluble biomass components (e.g., oligomeric xylan, lignin, etc.) released in pretreatment, and their effects on the effectiveness of enzymatic hydrolysis. We further discuss the diversity, stability, and activity of individual enzymes and their synergistic effects in deconstructing complex lignocellulosic biomass. Advanced technologies to discover and characterize novel enzymes and to improve enzyme characteristics by mutagenesis, post-translational modification, and over-expression of selected enzymes and modifications in lignocellulosic biomass are also discussed.

Yang, Bin; Dai, Ziyu; Ding, Shi-You; Wyman, Charles E.

2011-07-16T23:59:59.000Z

103

Belize-OAS Cellulosic Ethanol Market Assessment | Open Energy Information  

Open Energy Info (EERE)

Belize-OAS Cellulosic Ethanol Market Assessment Belize-OAS Cellulosic Ethanol Market Assessment Jump to: navigation, search Name Belize-OAS Cellulosic Ethanol Market Assessment Agency/Company /Organization Organization of American States (OAS) Sector Energy Focus Area Renewable Energy, Biomass Topics Market analysis, Background analysis Website http://www.sepa-americas.net/p Program Start 2008 Program End 2009 Country Belize UN Region Latin America and the Caribbean References OAS Project Database[1] "The main objective of the Project is to assess the market potential for cellulosic ethanol in Belize through sustainable implementation of cellulosic ethanol technology utilizing agricultural and forest residues as primary biomass feedstock. A supplementary objective will be to help prepare for potential future cellulosic ethanol projects in other Caribbean

104

Advancing Cellulosic Ethanol for Large Scale Sustainable Transportation  

E-Print Network (OSTI)

Advancing Cellulosic Ethanol for Large Scale SustainableHydrogen Batteries Nuclear By Lee Lynd, Dartmouth Ethanol Ethanol, ethyl alcohol, fermentation ethanol, or just

Wyman, C

2007-01-01T23:59:59.000Z

105

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid...  

NLE Websites -- All DOE Office Websites (Extended Search)

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid Hydrolysis. Abstract: Cotton linters were partially hydrolyzed in dilute acid and the morphology of remaining...

106

The Journey to Commercializing Cellulosic Biofuels in the United States  

Office of Energy Efficiency and Renewable Energy (EERE)

In Hugoton, Kansas, a state-of-the-art biorefinery has begun producing 25 million gallons per year of cellulosic ethanol.

107

Advancing Cellulosic Ethanol for Large Scale Sustainable Transportation  

E-Print Network (OSTI)

43% Hemicellulose 27% Lignin 17% Other 13% Agricultural45% Hemicellulose 25% Lignin 22% Extractives 5% Ash3% Woody Crops Ash 15% Lignin 10% Cellulose Hemicellulose 9%

Wyman, C

2007-01-01T23:59:59.000Z

108

Structures of cellulose acetate membranes for reverse osmosis  

Science Journals Connector (OSTI)

Studies under the scanning electron microscope have shown that the cellulose acetate membranes used for reverse osmosis are high-molecular-weight condensation structures of...

I. N. Vlodavets; G. Z. Nefedova

1977-01-01T23:59:59.000Z

109

The Current State of Technology for Cellulosic Ethanol | Department...  

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

The Current State of Technology for Cellulosic Ethanol At the February 12, 2009 joint Web conference of DOE's Biomass and Clean Cities programs, Andy Aden (National Renewable...

110

Less is more: Novel cellulose structure requires fewer enzymes...  

NLE Websites -- All DOE Office Websites (Extended Search)

Los Alamos National Laboratory (LANL) and the Great Lakes Bioenergy Research Center (GLBRC). Scientists are investigating the unique properties of crystalline cellulose...

111

Phase Transitions in Cellulose Microfibril Dispersions by High-Energy Mechanical Deagglomeration  

Science Journals Connector (OSTI)

Phase Transitions in Cellulose Microfibril Dispersions by High-Energy Mechanical Deagglomeration ... This is achieved by applying high-energy mechanical deagglomeration to bacterial cellulose (BC) networks in the presence of sodium carboxymethyl cellulose (CMC). ...

Sandra J. Veen; Anke Kuijk; Peter Versluis; Henk Husken; Krassimir P. Velikov

2014-10-14T23:59:59.000Z

112

PILOT PLANT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL. REPORT OF WORK PROGRESS, JAN. 31, 1977  

E-Print Network (OSTI)

Bioconversion Of Cellulose And Production Of Ethanol CharlesBIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL under

Wilke, C.R.

2010-01-01T23:59:59.000Z

113

Coarse-grained model for the interconversion between different crystalline cellulose allomorphs  

SciTech Connect

We present the results of Langevin dynamics simulations on a coarse grained model for crystalline cellulose. In particular, we analyze two different cellulose crystalline forms: cellulose I (the natural form of cellulose) and cellulose IIII (obtained after cellulose I is treated with anhydrous liquid ammonia). Cellulose IIII has been the focus of wide interest in the field of cellulosic biofuels as it can be efficiently hydrolyzed to glucose (its enzymatic degradation rates are up to 5 fold higher than those of cellulose I ). In turn, glucose can eventually be fermented into fuels. The coarse-grained model presented in this study is based on a simplified geometry and on an effective potential mimicking the changes in both intracrystalline hydrogen bonds and stacking interactions during the transition from cellulose I to cellulose IIII. The model accurately reproduces both structural and thermomechanical properties of cellulose I and IIII. The work presented herein describes the structural transition from cellulose I to cellulose IIII as driven by the change in the equilibrium state of two degrees of freedom in the cellulose chains. The structural transition from cellulose I to cellulose IIII is essentially reduced to a search for optimal spatial arrangement of the cellulose chains.

Langan, Paul [ORNL

2012-01-01T23:59:59.000Z

114

Department of Energy Delivers on R&D Targets around Cellulosic...  

Office of Environmental Management (EM)

advances required to produce cellulosic ethanol that is cost competitive with petroleum. Cellulosic ethanol is fuel produced from the inedible, organic material abundant in...

115

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

EthanolOf Cellulose And Production Of Ethanol I Charles R. WilkeCELLULOSE AND PRODUCTION OF ETHANOL under auspices of U.S.

Wilke, C.R.

2011-01-01T23:59:59.000Z

116

Synthesis of ?-Cyclodextrin Functionalized Cellulose Nanocrystals and Their Interactions with Amphiphilic Compounds.  

E-Print Network (OSTI)

??Cellulose nanocrystal (CNC) obtained from acid hydrolysis of cellulose fibres has attracted enormous interests due to its large surface area, high negative surface charge density, (more)

Zhang, Feifei

2014-01-01T23:59:59.000Z

117

UTILIZATION OF IMMOBILIZED B-GLUCOSIDASE IN THE ENZYMATIC HYDROLYSIS OF CELLULOSE.  

E-Print Network (OSTI)

enzymatic conversion of cellulose to ethanol. Reprinted frombetween the cellulose hydrolysis and ethanol fer- mentationcellulose to glucose in order to ferment the glucose to ethanol

Isaacs, S.H.

2011-01-01T23:59:59.000Z

118

Carbohydrate Derived-Pseudo-Lignin Can Retard Cellulose Biological Conversion  

E-Print Network (OSTI)

ARTICLE Carbohydrate Derived-Pseudo-Lignin Can Retard Cellulose Biological Conversion Rajeev Kumar degradation products, collectively termed as chars and/or pseudo-lignin. In order to understand the factors derived pseudo-lignin on cellulose conversion at the moderate to low enzyme loadings necessary

California at Riverside, University of

119

Hydration Control of the Mechanical and Dynamical Properties of Cellulose  

Science Journals Connector (OSTI)

Loukas Petridis *, Hugh M. ONeill , Mariah Johnsen ?, Bingxin Fan ?, Roland Schulz #, Eugene Mamontov ?, Janna Maranas ?, Paul Langan ?, and Jeremy C. Smith # ... sucrofermentans (ATCC 700178) in minimal media and purification of cellulose has been described previously. ... In vivo generated deuterated bacterial cellulose, cultivated from 100% deuterated glycerol in D2O medium, was analyzed for deuterium incorporation by ionic liq. ...

Loukas Petridis; Hugh M. ONeill; Mariah Johnsen; Bingxin Fan; Roland Schulz; Eugene Mamontov; Janna Maranas; Paul Langan; Jeremy C. Smith

2014-10-17T23:59:59.000Z

120

Single Molecule Study of Cellulase Hydrolysis of Crystalline Cellulose  

SciTech Connect

This report seeks to elucidate the role of cellobiohydrolase-I (CBH I) in the hydrolysis of crystalline cellulose. A single-molecule approach uses various imaging techniques to investigate the surface structure of crystalline cellulose and changes made in the structure by CBH I.

Liu, Y.-S.; Luo, Y.; Baker, J. O.; Zeng, Y.; Himmel, M. E.; Smith, S.; Ding, S.-Y.

2009-12-01T23:59:59.000Z

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


121

Secretary Bodman Touts Importance of Cellulosic Ethanol at Georgia  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Touts Importance of Cellulosic Ethanol at Georgia Touts Importance of Cellulosic Ethanol at Georgia Biorefinery Groundbreaking Secretary Bodman Touts Importance of Cellulosic Ethanol at Georgia Biorefinery Groundbreaking October 6, 2007 - 4:21pm Addthis SOPERTON, GA - U.S. Secretary of Energy Samuel W. Bodman today attended a groundbreaking ceremony for Range Fuels' biorefinery - one of the nation's first commercial-scale cellulosic ethanol biorefineries - and made the following statement. "Together, the Department of Energy and private sector pioneers, such as Range Fuels, are blending science and technology to advance the President's goal of reducing our dependence on foreign oil," U.S. Secretary of Energy Samuel W. Bodman said. "The production of cost-competitive cellulosic ethanol is a significant part of America's energy future. This new

122

EA-1704: Construction and Operation of a Proposed Cellulosic Biorefinery,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

704: Construction and Operation of a Proposed Cellulosic 704: Construction and Operation of a Proposed Cellulosic Biorefinery, BlueFire Fulton Renewable Energy, LLC, Fulton, Mississippi EA-1704: Construction and Operation of a Proposed Cellulosic Biorefinery, BlueFire Fulton Renewable Energy, LLC, Fulton, Mississippi SUMMARY ThIs EA evaluates the potential environmental impacts of a propsal, (Fulton Project) that consists of the design, construction and operation of a biorefinery facility producing ethanol and other co-products from cellulosic materials utilizing a patented concentrated acid hydrolysis process. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD June 4, 2010 EA-1704: Finding of No Significant Impact Construction and Operation of a Proposed Cellulosic Biorefinery, BlueFire

123

Physical properties of agave cellulose graft polymethyl methacrylate  

SciTech Connect

The grafting polymerization of methyl methacrylate and Agave cellulose was prepared and their structural analysis and morphology were investigated. The grafting reaction was carried out in an aqueous medium using ceric ammonium nitrate as an initiator. The structural analysis of the graft copolymers was carried out by Fourier transform infrared and X-ray diffraction. The graft copolymers were also characterized by field emission scanning electron microscopy (FESEM). An additional peak at 1732 cm{sup ?1} which was attributed to the C=O of ester stretching vibration of poly(methyl methacrylate), appeared in the spectrum of grafted Agave cellulose. A slight decrease of crystallinity index upon grafting was found from 0.74 to 0.68 for cellulose and grafted Agave cellulose, respectively. Another evidence of grafting showed in the FESEM observation, where the surface of the grafted cellulose was found to be roughed than the raw one.

Rosli, Noor Afizah; Ahmad, Ishak; Abdullah, Ibrahim; Anuar, Farah Hannan [Polymer Research Centre (PORCE), School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi Selangor (Malaysia)

2013-11-27T23:59:59.000Z

124

DuPont Energy Innovations  

E-Print Network (OSTI)

21 1 6 2 9 9 U. S. Primary Energy Consumption by Source and Sector, 2007 (Quadrillion BTU) Source energy flat with 1990 levels. Progress: · Consumption down 7 percent overall as compared to 1990. · SinceDuPont Energy Innovations University of Delaware Energy Institute Inauguration September 19, 2008

Firestone, Jeremy

125

Surface-Configuration Change of CF4 Plasma Treated Cellulose and Cellulose Acetate by Interaction of Water with Surfaces  

Science Journals Connector (OSTI)

Surface-configuration change due to the change of contacting medium from (dry) air to liquid water and also from (dry) air to a high relative humidity air was investigated for cellulose and cellulose acetate. CF4 plasma treatment was used to tag the ...

Takeshi Yasuda; Tsumuko Okuno; Kaori Tsuji; Hirotsugu Yasuda

1996-03-06T23:59:59.000Z

126

Surface plasmon resonance imaging of the enzymatic degradation of cellulose microfibrils  

E-Print Network (OSTI)

and provide useful metrics of enzyme activity that are of relevance to the cellulosic ethanol industry. Introduction The degradation of cellulose by enzymes is a key step in the production of cellulosic ethanol.1 the production of cellulosic ethanol more economically viable, however this is challenging because

Dutcher, John

127

Discovery of Cellulose as a Smart Material Jaehwan Kim* and Sungryul Yun  

E-Print Network (OSTI)

Discovery of Cellulose as a Smart Material Jaehwan Kim* and Sungryul Yun Center for EAPap Actuator in cellulose applications and technologies by reporting our discovery of cellulose as a smart material that can, however, the potential of cellulose as a smart lightweight material that can be used as a sensor

Ounaies, Zoubeida

128

NREL Proves Cellulosic Ethanol Can Be Cost Competitive (Fact Sheet)  

SciTech Connect

Ethanol from non-food sources - known as "cellulosic ethanol" - is a near-perfect transportation fuel: it is clean, domestic, abundant, and renewable, and it can potentially replace 30% of the petroleum consumed in the United States, but its relatively high cost has limited its market. That changed in 2012, when the National Renewable Energy Laboratory (NREL) demonstrated the technical advances needed to produce cellulosic ethanol at a minimum ethanol selling price of $2.15/gallon (in 2007 dollars). Through a multi-year research project involving private industry, NREL has proven that cellulosic ethanol can be cost competitive with other transportation fuels.

Not Available

2013-11-01T23:59:59.000Z

129

Author Proof A ARTICLE Cellulose Hydrolysis  

NLE Websites -- All DOE Office Websites (Extended Search)

II: II: Numerical Results and Analysis Wen Zhou, 1,2 Zhiqian Hao, 3 Ying Xu, 1,2 Heinz-Bernd Schu ¨ ttler 3 1 Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens, Georgia; telephone: 706-542-9779; fax: 706-542-9751; e-mail: xyn@bmb.uga.edu 2 BioEnergy Science Center (BESC), Oak Ridge, Tennessee 3 Department of Physics and Astronomy, University of Georgia, Athens, Georgia; telephone: 706-542-3886; fax: 706-542-2492; e-mail: hbs@physast.uga.edu Received 16 December 2008; revision received 13 March 2009; accepted 27 April 2009 Published online 12 May 2009 in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/bit.22388 ABSTRACT: Numerical simulation results are presented for a cellulose hydrolysis model which incorporates both the enzymatic glucan chain fragmentation kinetics and the hydrolytic

130

Author Proof A ARTICLE Cellulose Hydrolysis  

NLE Websites -- All DOE Office Websites (Extended Search)

I: I: A General Modeling Formalism Wen Zhou, 1,2 Heinz-Bernd Schu ¨ ttler, 3 Zhiqian Hao, 3 Ying Xu 1,2 1 Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens, Georgia; telephone: 706-542-9779; fax: 706-542-9751; e-mail: xyn@bmb.uga.edu 2 BioEnergy Science Center (BESC), Oak Ridge, Tennassee 3 Department of Physics and Astronomy, University of Georgia, Athens, Georgia; telephone: 706-542-3886; fax: 706-542-9751; e-mail: hbs@physast.uga.edu Received 16 December 2008; revision received 13 March 2009; accepted 27 April 2009 Published online 8 May 2009 in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/bit.22389 ABSTRACT: We develop a general framework for a realistic rate equation modeling of cellulose hydrolysis using non- complexed cellulase. Our proposed formalism, for the first time, takes

131

Carbohydrate derivedpseudolignin can retard cellulose biological conversion  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbohydrate Carbohydrate Derived-Pseudo-Lignin Can Retard Cellulose Biological Conversion Rajeev Kumar, 1,2,3 Fan Hu, 3,4 Poulomi Sannigrahi, 3,4 Seokwon Jung, 3,4 Arthur J. Ragauskas, 3,4 Charles E. Wyman 1,2,3 1 Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, Riverside, California 92507; telephone: 951-781-5668; fax: 951-781-5790; e-mail: rajeev.dartmouth@gmail.com 2 Department of Chemical and Environmental Engineering, Bourns College of Engineering, 446 Winston Chung Hall, 900 University Avenue, Riverside, California 92507 3 BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6422 4 School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia ABSTRACT: Dilute acid as well as water only (hydrother- mal) pretreatments often lead to a significant

132

Florida Project Produces Nation's First Cellulosic Ethanol at  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Florida Project Produces Nation's First Cellulosic Ethanol at Florida Project Produces Nation's First Cellulosic Ethanol at Commercial-Scale Florida Project Produces Nation's First Cellulosic Ethanol at Commercial-Scale July 31, 2013 - 1:37pm Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today recognized the nation's first commercial-scale cellulosic ethanol production at INEOS Bio's Indian River BioEnergy Center in Vero Beach, Florida. Developed through a joint venture between INEOS Bio and New Planet Energy, the project uses a unique hybrid of gasification and fermentation technology - originally developed with Energy Department support starting in the 1990's - to convert wood scraps, grass clippings and other waste materials into transportation fuels as well as energy for heat and power.

133

Florida Project Produces Nation's First Cellulosic Ethanol at  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Florida Project Produces Nation's First Cellulosic Ethanol at Florida Project Produces Nation's First Cellulosic Ethanol at Commercial-Scale Florida Project Produces Nation's First Cellulosic Ethanol at Commercial-Scale July 31, 2013 - 1:37pm Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today recognized the nation's first commercial-scale cellulosic ethanol production at INEOS Bio's Indian River BioEnergy Center in Vero Beach, Florida. Developed through a joint venture between INEOS Bio and New Planet Energy, the project uses a unique hybrid of gasification and fermentation technology - originally developed with Energy Department support starting in the 1990's - to convert wood scraps, grass clippings and other waste materials into transportation fuels as well as energy for heat and power.

134

Modifying cellulose fibers by adsorption/precipitation of xylan  

Science Journals Connector (OSTI)

Xylan was precipitated on bleached and unbleached softwood ... more detailed information of the distribution of adsorbed xylan on cellulosic surfaces. The adsorption step was carried out at ... the beating degree...

Albrecht Miletzky; Manuel Punz; Armin Zankel; Sandra Schlader

2014-10-01T23:59:59.000Z

135

Secretary Moniz Dedicates Innovative Commercial-Scale Cellulosic...  

Office of Environmental Management (EM)

28,000 vehicles off the road. The cellulosic ethanol produced at the Abengoa Bioenergy Biomass of Kansas (ABBK) facility, located about 90 miles southwest of Dodge City, Kansas,...

136

Silicone rubber membrane bioreactors for bacterial cellulose production  

Science Journals Connector (OSTI)

Cellulose production byAcetobacter pasteurianus...was investigated in static culture using four bioreactors with silicone rubber membrane submerged in the medium. The shape ... , flat sack, tube and cylindrical b...

Masayuki Onodera; Ikuro Harashima; Kiyoshi Toda

2002-10-01T23:59:59.000Z

137

Chiral Plasmonic Films Formed by Gold Nanorods and Cellulose Nanocrystals  

Science Journals Connector (OSTI)

Chiral plasmonic films have been prepared by incorporating gold nanorods (NRs) in a macroscopic cholesteric film formed by self-assembled cellulose nanocrystals (CNCs). Composite NR-CNC films revealed strong plasmonic chiroptical activity, dependent on ...

Ana Querejeta-Fernndez; Grgory Chauve; Myriam Methot; Jean Bouchard; Eugenia Kumacheva

2014-03-03T23:59:59.000Z

138

Hybrid Systems of Silver Nanoparticles Generated on Cellulose Surfaces  

Science Journals Connector (OSTI)

(4-7) For instance, polymer supported silver NPs at the moment are attracting much attention in biomedical applications, due to the antibacterial character, enabling their use in wound dressing materials, body wall repairs, tissue scaffolds, or even antimicrobial filters. ... (26) Recently, a cellulose acetate nanofibrillar aerogel structure with about 6 wt % loading content of Ag NPs was prepared. ... Graft copolymerization onto cellulose-based filter paper and its further development as silver nanoparticles loaded antibacterial food-packaging material ...

Ana Maria Ferraria; Sami Boufi; Nicolas Battaglini; Ana Maria Botelho do Rego; Manuel ReiVilar

2009-11-06T23:59:59.000Z

139

Cellulose challenge: where do we go from here  

SciTech Connect

Because of its relatively low cost and high level of availability, wood has become a popular biomass resource for the manufacture of fuels and chemical products. The producers of high-purity cellulose pulps face problems because the kraft process which is the standard source of dissolving pulp involves huge investments. The article examines the future of this industry and assesses these new technologies: solvent pulping; low lignin biomass and microbial cellulose. 6 references.

Lipinsky, E.S.

1983-10-01T23:59:59.000Z

140

Hydroxypropylation of cellulose as a pretreatment for enzymatic hydrolysis  

E-Print Network (OSTI)

) suggest that factors such as particle size, surface area, degree of polymerization, and pore volume also influence hydrolytic behavior. Figure 1. Chemical structure of cellulose showing reactive hydroxyl (-OH) groups. Repeating anhydrocellobiose units... unique chemical properties is hydrozypropylcellulose (HPC). The possibility of forming long poly(propylene oxide) side chains during HPC synthesis makes this cellulose derivative particularly interesting for study. The ability of HPC to possess...

Brix, Scott Tyson

2012-06-07T23:59:59.000Z

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


141

Structure and dynamics of a complex of cellulose with EDA: insights into the action of amines on cellulose  

SciTech Connect

The neutron structure of a complex of EDA with cellulose has been determined to reveal the location of hydrogen atoms involved in hydrogen bonding. EDA disrupts the hydrogen bonding pattern of naturally occurring cellulose by accepting a strong hydrogen bond from the O6 hydroxymethyl group as the conformation of this group is rotated from tg to gt. The O3-H O5 intrachain hydrogen bond commonly found in cellulose allomorphs is observed to be disordered in the neutron structure, and quantum chemistry and molecular dynamics calculations show that O3 prefers to donate to EDA. The hydrogen bonding arrangement is highly dynamic with bonds continually being formed and broken thus explaining the difficulty in locating all of the hydrogen atoms in the neutron scattering density maps. Comparison with other polysaccharide-amine complexes supports a common underlying mechanism for amine disruption of cellulose.

Sawada, Daisuke [ORNL; Nishiyama, Yoshiharu [Centre de Recherches sur les Macromolecules Vegetales (CERMAV-CNRS); Petridis, Loukas [ORNL; Parthasarathi, R. [Los Alamos National Laboratory (LANL); Gnanakaran, S [Los Alamos National Laboratory (LANL); Forsyth, V. T. [Institut Laue Langevin and Keele University; Wada, Masahisa [University of Tokyo, Japan; Langan, Paul [ORNL

2013-01-01T23:59:59.000Z

142

Quaternary Ammonium Salts and their Low-Melting Eutectics for the Conversion of Cellulose and Cellulose-Derived Sugars.  

E-Print Network (OSTI)

??The use of Ionic Liquids (ILs) as solvents presents a promising route for the conversion of cellulosic biomass feedstock to value-added products, like 5-hydroxymethylfurfural (HMF), (more)

Parvathikar, Sameer

2013-01-01T23:59:59.000Z

143

Efficient Sugar Release by the Cellulose Solvent-Based Lignocellulose Fractionation Technology and Enzymatic Cellulose Hydrolysis  

Science Journals Connector (OSTI)

Biological Systems Engineering Department, Virginia Polytechnic Institute and State University, 210-A Seitz Hall, Blacksburg, Virginia 24061, Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Virginia 24061, and Department of Energy (DOE) BioEnergy Science Center, Oak Ridge, Tennessee 37831 ... The biomass samples before pretreatment were prepared in the same way as the Biomass Refining Consortium for Applied Fundamentals and Innovation (CAFI) (21, 22). ... to make cellulosic materials accessible to enzymic hydrolysis, with increased attention to the fundamental chem. ...

Geoffrey Moxley; Zhiguang Zhu; Y.-H. Percival Zhang

2008-08-15T23:59:59.000Z

144

Real-Time Observation of the Swelling and Hydrolysis of a Single Crystalline Cellulose Fiber Catalyzed by Cellulase 7B  

E-Print Network (OSTI)

facilitate its application for the efficient and economical production of cellulosic ethanol. INTRODUCTIONReal-Time Observation of the Swelling and Hydrolysis of a Single Crystalline Cellulose Fiber Information ABSTRACT: The biodegradation of cellulose involves the enzymatic action of cellulases

Dutcher, John

145

Simultaneous cell growth and ethanol production from cellulose by an engineered yeast consortium displaying a functional mini-cellulosome  

E-Print Network (OSTI)

Cellulase, clostridia, and ethanol. Microbiol Mol Biol RevNext- generation cellulosic ethanol technologies and theirProduction of cellulosic ethanol in Saccharomyces cerevisiae

Goyal, Garima; Tsai, Shen-Long; Madan, Bhawna; DaSilva, Nancy A; Chen, Wilfred

2011-01-01T23:59:59.000Z

146

www.exeter.ac.uk/inspiring-science Cellulose: sustainable and renewable  

E-Print Network (OSTI)

www.exeter.ac.uk/inspiring-science Cellulose: sustainable and renewable material for many The talk will cover the use of cellulose as a sustainable and renewable source for use in composites

Mumby, Peter J.

147

Diversity of Glycosyl Hydrolases from Cellulose-Depleting Communities Enriched from Casts of Two Earthworm Species  

Science Journals Connector (OSTI)

...metagenomic fosmid libraries from cellulose-depleting...annotated in public databases as...introducing myRDP space and quality controlled public data. Nucleic...metagenomic fosmid libraries from cellulose-depleting...annotated in public databases as...

Ana Beloqui; Taras Y. Nechitaylo; Nieves Lpez-Corts; Azam Ghazi; Mara-Eugenia Guazzaroni; Julio Polaina; Axel W. Strittmatter; Oleg Reva; Agnes Waliczek; Michail M. Yakimov; Olga V. Golyshina; Manuel Ferrer; Peter N. Golyshin

2010-07-09T23:59:59.000Z

148

100years of cellulose fiber diffraction and the emergence of complementary techniques  

Science Journals Connector (OSTI)

Crystallinity is a fundamental property of cellulose. Over recent years an understanding has developed of cellulose synthesized at the plasma membrane by protein complexes that add glucose sugars to linear cha...

Alfred French; Paul Langan

2014-06-01T23:59:59.000Z

149

Cellulosic Biofuels: Expert Views on Prospects for Advancement and Jeffrey Keisler  

E-Print Network (OSTI)

Cellulosic Biofuels: Expert Views on Prospects for Advancement Erin Baker and Jeffrey Keisler funding and the likelihood of achieving advances in cellulosic biofuel technologies. While in collecting more information on this technology. Keywords: Biofuels; Technology R&D; Uncertainty

Massachusetts at Amherst, University of

150

Requirement of the Type II Secretion System for Utilization of Cellulosic Substrates by Cellvibrio japonicus  

Science Journals Connector (OSTI)

...cellulose led us to examine its ability to utilize feedstocks relevant to the bioenergy field. We chose two key biomass feedstocks for these studies: corn stover and switchgrass. Because current approaches to cellulosic biofuels typically involve...

Jeffrey G. Gardner; David H. Keating

2010-06-11T23:59:59.000Z

151

J33. CSSC Cellulosic H2 2009 (High Resolution $$$).pdf  

NLE Websites -- All DOE Office Websites (Extended Search)

Reprint Reprint © Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Supported by  WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Table of Contents X. Ye, Y. Wang, R. C. Hopkins, M. W. W. Adams, B. R. Evans, J. R. Mielenz, Y.-H. P. Zhang* 149 - 152 Spontaneous High-Yield Production of Hydrogen from Cellulosic Materials and Water Catalyzed by Enzyme Cocktails Cocktail reception: Biohydrogen is pro- duced in high yield from cellulosic ma- terials and water in a one-pot process catalyzed by up to 14 enzymes and one coenzyme. This assembly of enzymes re- sults in non-natural catabolic pathways. These spontaneous reactions are con- ducted under modest reaction condi- tions (32 8C and atmospheric pressure). DOI: 10.1002/cssc.200900017 Spontaneous High-Yield Production of Hydrogen from Cellulosic Materials and Water Catalyzed by Enzyme Cocktails Xinhao Ye, [a] Yiran Wang, [a] Robert

152

DOE Joint Genome Institute: Breaking down cellulose without blasting  

NLE Websites -- All DOE Office Websites (Extended Search)

4, 2011 4, 2011 Breaking down cellulose without blasting lignin: "Dry rot" genome offers lessons for biofuel pretreatment WALNUT CREEK, Calif.-Feared by realtors and homeowners alike, dry rot due to the fungus Serpula lacrymans causes millions of dollars worth of damage to homes and buildings around the world. This brown rot fungus' capacity to break down the cellulose in wood led to its selection for sequencing by the U.S. Department of Energy (DOE) Joint Genome Institute (JGI) in 2007, with the goal of identifying the enzymes involved in the degradation process and using the information to improve cellulosic biofuels production. Photo: A variant of Serpula lacrymans causes dry rot. (Dave Brown via Flickr/Creative Commons Attribution 2.0) As reported online July 14 in Science Express, an international team of

153

New lignocellulose pretreatments using cellulose solvents: a review  

NLE Websites -- All DOE Office Websites (Extended Search)

Received: Received: 7 September 2012 Accepted: 13 September 2012 Published online in Wiley Online Library: (wileyonlinelibrary.com) DOI 10.1002/jctb.3959 New lignocellulose pretreatments using cellulose solvents: a review Noppadon Sathitsuksanoh, a† Anthe George b,c and Y-H Percival Zhang a,d,e∗ Abstract Non-food lignocellulosic biomass is the most abundant renewable bioresource as a collectable, transportable, and storable chemical energy that is far from fully utilized. The goal of biomass pretreatment is to improve the enzymatic digestibility of pretreated lignocellulosic biomass. Many substrate factors, such as substrate accessibility, lignin content, particle size and so on, contribute to its recalcitrance. Cellulose accessibility to hydrolytic enzymes is believed to be the most important substrate characteristic limiting enzymatic hydrolysis. Cellulose

154

Ionic-Liquid Induced Changes in Cellulose Structure Associated with Enhanced Biomass Hydrolysis  

SciTech Connect

The effects of varying ionic liquid pretreatment parameters on various sources of lignocellulosic biomass have been studied using X-ray powder diffraction, X-ray fiber diffraction, and compositional analysis. Comparative enzymatic hydrolysis and sugar analysis were used to relate the observed changes in cellulose structure to biomass digestibility. In this study, the factor most clearly associated with enhanced biomass hydrolysis is the conversion of cellulose fibers from the cellulose I to the cellulose II crystal phase.

Samayam, Indira P.; Hanson, B. Leif; Langan, Paul; Schall, Constance A. (Toledo)

2011-11-07T23:59:59.000Z

155

Department of Energy Delivers on R&D Targets around Cellulosic Ethanol  

Office of Energy Efficiency and Renewable Energy (EERE)

Scientists at DOE national laboratories successfully demonstrated technical advances required to produce cellulosic ethanol that is cost competitive with petroleum.

156

Cellulose solventbased biomass pretreatment breaks highly ordered hydrogen bonds in cellulose fibers of switchgrass  

NLE Websites -- All DOE Office Websites (Extended Search)

Solvent-Based Solvent-Based Biomass Pretreatment Breaks Highly Ordered Hydrogen Bonds in Cellulose Fibers of Switchgrass Noppadon Sathitsuksanoh, 1,2 Zhiguang Zhu, 1 Sungsool Wi, 3 Y.-H. Percival Zhang 1,2,4 1 Biological Systems Engineering Department, Virginia Polytechnic Institute and State University (Virginia Tech), 210-A Seitz Hall, Blacksburg, Virginia 24061; telephone: 540-231-7414, fax: 540-231-3199; e-mail: ypzhang@vt.edu 2 Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, Virginia 3 Chemistry Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 4 DOE BioEnergy Science Center (BESC), Oak Ridge, Tennessee Received 25 June 2010; revision received 23 August 2010; accepted 4 October 2010 Published online 21 October 2010 in Wiley Online Library (wileyonlinelibrary.com).

157

Primary Radiation Defect Production in Polyethylene and Cellulose Jussi Polvi,* Petri Luukkonen, and Kai Nordlund  

E-Print Network (OSTI)

Primary Radiation Defect Production in Polyethylene and Cellulose Jussi Polvi,* Petri Luukkonen in polyethylene and cellulose were examined using molecular dynamics simulations. The governing reactions in both. Crystalline cellulose was found to be more resistant to radiation damage than crystalline polyethylene

Nordlund, Kai

158

Changes in the Enzymatic Hydrolysis Rate of Avicel Cellulose With Conversion  

E-Print Network (OSTI)

INTRODUCTION Cellulose can be hydrolyzed to glucose, a sugar that is easily fermented to ethanol and otherChanges in the Enzymatic Hydrolysis Rate of Avicel Cellulose With Conversion Bin Yang, Deidre M: 10.1002/bit.20942 Abstract: The slow down in enzymatic hydrolysis of cellulose with conversion has

California at Riverside, University of

159

Kinetic Modeling of Cellulosic Biomass to Ethanol Via Simultaneous Saccharification and  

E-Print Network (OSTI)

ARTICLE Kinetic Modeling of Cellulosic Biomass to Ethanol Via Simultaneous Saccharification. Biotechnol. Bioeng. 2009;102: 66­72. ? 2008 Wiley Periodicals, Inc. KEYWORDS: cellulose; ethanol; model validation Introduction Conversion of cellulosic biomass to ethanol and other liquid fuels is of interest

California at Riverside, University of

160

Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw  

E-Print Network (OSTI)

Cultivar variation and selection potential relevant to the production of cellulosic ethanol from Sugar Wheat straw Variation Cultivar a b s t r a c t Optimizing cellulosic ethanol yield depends Elsevier Ltd. All rights reserved. 1. Introduction Decreasing the cost of producing cellulosic ethanol

California at Riverside, University of

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


161

Production of Cellulase on Mixtures of Xylose and Cellulose in a Fed-Batch Process  

E-Print Network (OSTI)

saccharification to sugars for ethanol production. In the past decade, enzymatic hydrolysis of cellulose hasProduction of Cellulase on Mixtures of Xylose and Cellulose in a Fed-Batch Process Ali Mohagheghi was studied in a fed-batch system. An initial mixture of 30 g/L xylose and 20 g/L cellulose

California at Riverside, University of

162

Kinetic Modeling of Cellulosic Biomass to Ethanol Via Simultaneous Saccharification and  

E-Print Network (OSTI)

ARTICLE Kinetic Modeling of Cellulosic Biomass to Ethanol Via Simultaneous Saccharification: cellulose; ethanol; kinetics; reactor design Introduction Plant biomass is the only foreseeable sustainable­803] for simultaneous saccharification of fermentation of cellulosic biomass is extended and modified to accommodate

California at Riverside, University of

163

Cellulose nanowhiskers (CNW) have attracted much attention over the past several years due to their  

E-Print Network (OSTI)

Cellulose nanowhiskers (CNW) have attracted much attention over the past several years due- hydroxybutyrate-hydroxyvalerate). Cellulose nanowhiskers were prepared from microcrystilline cellulose (MCC) using and spun into fibers using a spinneret of diameter 370 m and an ethanol coagulation bath. The fibers were

Collins, Gary S.

164

Methods of pretreating comminuted cellulosic material with carbonate-containing solutions  

DOE Patents (OSTI)

Methods of pretreating comminuted cellulosic material with an acidic solution and then a carbonate-containing solution to produce a pretreated cellulosic material are provided. The pretreated material may then be further treated in a pulping process, for example, a soda-anthraquinone pulping process, to produce a cellulose pulp. The pretreatment solutions may be extracted from the pretreated cellulose material and selectively re-used, for example, with acid or alkali addition, for the pretreatment solutions. The resulting cellulose pulp is characterized by having reduced lignin content and increased yield compared to prior art treatment processes.

Francis, Raymond

2012-11-06T23:59:59.000Z

165

Irreversible transformations of native celluloses, upon exposure to elevated temperatures  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbohydrate Polymers 100 (2014) 2- 8 Carbohydrate Polymers 100 (2014) 2- 8 Contents lists available at ScienceDirect Carbohydrate Polymers j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / c a r b p o l Irreversible transformations of native celluloses, upon exposure to elevated temperatures R.S. Atalla a , M.F. Crowley b , M.E. Himmel b , R.H. Atalla a,c,∗ a Cellulose Sciences International, Madison, WI, United States b National Renewable Energy Laboratory, Golden, CO, United States c University of Wisconsin-Madison, Madison, WI, United States a r t i c l e i n f o Article history: Received 29 August 2012 Received in revised form 4 June 2013 Accepted 7 June 2013 Available online 15 June 2013 Keywords: Transformation Irreversible Celluloses Elevated Temperatures Native Accessibility Aggregation a b s t r a c t Current research, basic and applied, assumes that observed recalcitrance of celluloses is an inherent

166

Can Delignification Decrease Cellulose Digestibility in Acid Pretreated Corn Stover?  

SciTech Connect

It has previously been shown that the improved digestibility of dilute acid pretreated corn stover is at least partially due to the removal of xylan and the consequent increase in accessibility of the cellulose to cellobiohydrolase enzymes. We now report on the impact that lignin removal has on the accessibility and digestibility of dilute acid pretreated corn stover. Samples of corn stover were subjected to dilute sulfuric acid pretreatment with and without simultaneous (partial) lignin removal. In addition, some samples were completely delignified after the pretreatment step using acidified sodium chlorite. The accessibility and digestibility of the samples were tested using a fluorescence-labeled cellobiohydrolase (Trichoderma reesei Cel7A) purified from a commercial cellulase preparation. Partial delignification of corn stover during dilute acid pretreatment was shown to improve cellulose digestibility by T. reesei Cel7A; however, decreasing the lignin content below 5% (g g{sup -1}) by treatment with acidified sodium chlorite resulted in a dramatic reduction in cellulose digestibility. Importantly, this effect was found to be enhanced in samples with lower xylan contents suggesting that the near complete removal of xylan and lignin may cause aggregation of the cellulose microfibrils resulting in decreased cellulase accessibility.

Ishizawa, C. I.; Jeoh, T.; Adney, W. S.; Himmel, M. E.; Johnson, D. K.; Davis, M. F.

2009-01-01T23:59:59.000Z

167

Unconventional Relationshipsfor Hemicellulose Hydrolysis and Subsequent Cellulose Digestion  

E-Print Network (OSTI)

be pretreated with dilute sulfuric acid to recover high yields of sugars directly from hemicellulose and subsequently by enzymatic hydrolysis of the residual cellulose, and these sugars can be used to produce fuels and needed technology advances. Hemicellulose removal is affected by solids concentration and flow through

California at Riverside, University of

168

TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass  

E-Print Network (OSTI)

TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass to Fuels, Chemicals that can reduce greenhouse gas emissions, enhance energy security, improve the economy, dispose of such products, and sugar costs are predicted to drop with plant size as a result of economies of scale

California at Riverside, University of

169

Forest biomass and pulpwood in particular is the most important raw material for cellulose. The most common species for this purpose are pine, spruce and birch in the Nordic countries and eucalyptus and  

E-Print Network (OSTI)

Forest biomass and pulpwood in particular is the most important raw material for cellulose diverse novel processes for separating cellulose, hemi cellulose and lignin from biomass. Biorefineries

Kaski, Samuel

170

Development of Cellulosic Biofuels (LBNL Summer Lecture Series)  

ScienceCinema (OSTI)

Summer Lecture Series 2007: Chris Somerville, Director of the Energy Biosciences Institute and an award-winning plant biochemist with Berkeley Lab's Physical Biosciences Division, is a leading authority on the structure and function of plant cell walls. He discusses an overview of some of the technical challenges associated with the production of cellulosic biofuels, which will require an improved understanding of a diverse range of topics in fields such as agronomy, chemical engineering, microbiology, structural biology, genomics, environmental sciences, and socioeconomics.

Somerville, Chris [Director, Energy Biosciences Institute

2011-04-28T23:59:59.000Z

171

Design, Synthesis and Affinity Properties of Biologically Active Peptide and Protein Conjugates of Cotton Cellulose  

SciTech Connect

The formation of peptide and protein conjugates of cellulose on cotton fabrics provides promising leads for the development of wound healing, antibacterial, and decontaminating textiles. An approach to the design, synthesis, and analysis of bioconjugates containing cellulose peptide and protein conjugates includes: 1) computer graphic modeling for a rationally designed structure; 2) attachment of the peptide or protein to cotton cellulose through a linker amino acid, and 3) characterization of the resulting bioconjugate. Computer graphic simulation of protein and peptide cellulose conjugates gives a rationally designed biopolymer to target synthetic modifications to the cotton cellulose. Techniques for preparing these types of conjugates involve both sequential assembly of the peptide on the fabric and direct crosslinking of the peptide or protein as cellulose bound esters or carboxymethylcellulose amides.

Edwards, J. V.; Goheen, Steven C.

2002-11-30T23:59:59.000Z

172

A Probabilistic Inventory Analysis of Biomass for the State of Texas for Cellulosic Ethanol  

E-Print Network (OSTI)

, bioenergy from second generation cellulosic feedstocks cost more than fossil fuels. Another issue in dealing with corn grain as the feedstock for ethanol is that corn is used for food and livestock feed. The cellulosic process takes cellulosic material... Assessment and Utilization Options for Three Counties in Eastern Oregon? which was prepared by McNeil Technologies (2003); ?Biomass Inventory and Bioenergy Assessment: An evaluation of Organic Material Resources for Bioenergy Production in Washington State...

Gleinser, Matthew A.

2010-01-16T23:59:59.000Z

173

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

60,700 ETHANOL RECOVERY Dist. Column CondenserF2 Steam Exchanger Ethanol Absorber 10 ft. diameter. 38Cellulose and Production of Ethanol," Progress Report, LBL-

Wilke, Charles R.

2011-01-01T23:59:59.000Z

174

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

BIOCONVERSION TO SUGARS AND ETHANOL BERKELEY PROGRAM--JulyXylose Fermentation to Ethanol (a) (b) Fusarium oxysporum (OF CELLULOSE AND PRODUCTION OF ETHANOL under auspices of

Wilke, C.R.

2011-01-01T23:59:59.000Z

175

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

13 Javier Perez I II. ETHANOL FERMENTATION STUDIES A. B.Development Studies of Ethanol Production--------------- 19of Cellulose and Production of Ethanol." (June 1979) and (b)

Wilke, Charles R.

2012-01-01T23:59:59.000Z

176

PROCESS DEVELOPMENT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

OF CELLULOSE AND PRODUCTION OF ETHANOL Charles R. Wilke andEconomic Evaluation of Hydrolysis and Ethanol Fermentationa kinetic equation for ethanol production along with design

Wilke, Charles R.

2014-01-01T23:59:59.000Z

177

The Potential of Cellulosic Ethanol Production from Municipal Solid Waste: A Technical and Economic Evaluation  

E-Print Network (OSTI)

key to unlocking low-cost cellulosic ethanol. 2(1):26-40.1995 19941216. Commercial ethanol production process.facility and commercial ethanol production process.

Shi, Jian; Ebrik, Mirvat; Yang, Bin; Wyman, Charles E.

2009-01-01T23:59:59.000Z

178

Cellulosic biomass could help meet Californias transportation fuel needs  

E-Print Network (OSTI)

strides in the conversion of biomass to ethanol. Americancostly op- eration in the conversion of biomass to ethanol,The biological conversion of cellulosic biomass to ethanol

Wyman, Charles E.; Yang, Bin

2009-01-01T23:59:59.000Z

179

Forest Biomass and Lignocellulosic Materials Forest-derived biopolymers lignin and cellulose  

E-Print Network (OSTI)

Forest Biomass and Lignocellulosic Materials Forest-derived biopolymers lignin and cellulose of sustainable products such as nanocellulose and biocomposites from forest biomass; biorefining to develop high

Li, Mo

180

Cellulosic biomass could help meet Californias transportation fuel needs  

E-Print Network (OSTI)

t uels Cellulosic biomass could help * meet Californiasmeasures are needed to help overcome the per- ceived risksrun; addition of the word "help." Laboratories at the Center

Wyman, Charles E.; Yang, Bin

2009-01-01T23:59:59.000Z

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


181

The Effect of Cellulose Crystal Structure and Solid-State Morphology on the Activity of Cellulases  

SciTech Connect

Consistent with the US-DOE and USDA Roadmap objective of producing ethanol and chemicals from cellulosic feedstocks more efficiently, a three year research project entitled The Effect of Cellulose Crystal Structure and Solid-State Morphology on the Activity of Cellulases was initiated in early 2003 under DOE sponsorship (Project Number DE-FG02-02ER15356). A three year continuation was awarded in June 2005 for the period September 15, 2005 through September 14, 2008. The original goal of this project was to determine the effect of cellulose crystal structure, including allomorphic crystalline form (Cellulose I, II, III, IV and sub-allomorphs), relative degree of crystallinity and crystallite size, on the activity of different types of genetically engineered cellulase enzymes to provide insight into the mechanism and kinetics of cellulose digestion by pure enzymes rather than complex mixtures. We expected that such information would ultimately help enhance the accessibility of cellulose to enzymatic conversion processes thereby creating a more cost-effective commercial process yielding sugars for fermentation into ethanol and other chemical products. Perhaps the most significant finding of the initial project phase was that conversion of native bacterial cellulose (Cellulose I; BC-I) to the Cellulose II (BC-II) crystal form by aqueous NaOH pretreatment provided an increase in cellulase conversion rate approaching 2-4 fold depending on enzyme concentration and temperature, even when initial % crystallinity values were similar for both allomorphs.

Stipanovic, Arthur J [SUNY College of Environmental Science and Forestry

2014-11-17T23:59:59.000Z

182

The jiaoyao1 Mutant Is an Allele of korrigan1 That Abolishes Endoglucanase Activity and Affects the Organization of Both Cellulose Microfibrils and Microtubules in Arabidopsis  

Science Journals Connector (OSTI)

...the unsynchronized rate of individual elementary cellulose synthesis and the abrupt disruption...Pelletier, S., and Hofte, H. (2002). Resistance against herbicide isoxaben and cellulose...Modifications of cellulose synthase confer resistance to isoxaben and thiazolidinone herbicides...

Lei Lei; Tian Zhang; Richard Strasser; Christopher M. Lee; Martine Gonneau; Lukas Mach; Samantha Vernhettes; Seong H. Kim; Daniel J. Cosgrove; Shundai Li; Ying Gu

2014-06-24T23:59:59.000Z

183

Crystal Structure and Hydrogen-Bonding System in Cellulose I? from Synchrotron X-ray and Neutron Fiber Diffraction  

Science Journals Connector (OSTI)

The crystal and molecular structure together with the hydrogen-bonding system in cellulose I? has been determined using synchrotron and neutron diffraction data recorded from oriented fibrous samples prepared by aligning cellulose microcrystals from ...?

Yoshiharu Nishiyama; Paul Langan; Henri Chanzy

2002-07-10T23:59:59.000Z

184

How biomass is born: understanding cellulose synthesis for second generation Nadav Sorek, Energy Biosciences Institute, UC Berkeley, USA  

E-Print Network (OSTI)

How biomass is born: understanding cellulose synthesis for second generation biofuels Nadav Sorek, Energy Biosciences Institute, UC Berkeley, USA Lignocellulosic biofuels, also known as second generation utilization of cellulose in terms of energy production. . #12;

Shamir, Ron

185

Analysis of an imperfectly competitive cellulosic biofuel supply chain  

Science Journals Connector (OSTI)

Abstract We study the strategic behavior in an imperfectly competitive cellulosic biofuel supply chain. An optimization-based supply chain model is used to obtain long-run planning outcomes, based on which we develop market models considering both perfect and imperfect competitions. The equilibrium among stakeholders in the multi-echelon supply chain can be obtained by solving a collection of first-order conditions associated with their profit-maximization problems. For the imperfect competition, the model, additionally, allows firms with significant market share at different segment of the supply chain to exercise market power. We apply the models to an illustrative case study of California.

Yongxi Huang; Yihsu Chen

2014-01-01T23:59:59.000Z

186

Supramolecular Composite Materials from Cellulose, Chitosan, and Cyclodextrin: Facile Preparation and Their Selective Inclusion  

E-Print Network (OSTI)

Supramolecular Composite Materials from Cellulose, Chitosan, and Cyclodextrin: Facile Preparation-performance supramolecular polysaccharide composites from cellulose (CEL), chitosan (CS), and (2,3,6-tri to dissolve and prepare the composites. Because a majority (>88%) of the IL used was recovered for reuse

Reid, Scott A.

187

Investigation of Lignin Deposition on Cellulose During Hydrothermal Pretreatment, Its Effect on  

E-Print Network (OSTI)

Investigation of Lignin Deposition on Cellulose During Hydrothermal Pretreatment, Its Effect Ridge, Tennessee ABSTRACT: In dilute acid pretreatment of lignocellulosic biomass, lignin has been shown formed by hydrothermal pretreatment of a mixture of Avicel cellulose and poplar wood showed that lignin

California at Riverside, University of

188

Cellulose nanocrystal from pomelo (C. Grandis osbeck) albedo: Chemical, morphology and crystallinity evaluation  

SciTech Connect

Citrus peel is one of the under-utilized waste materials that have potential in producing a valuable fibre, which are cellulose and cellulose nanocrystal. Cellulose was first isolated from pomelo (C. Grandis Osbeck) albedo by combination of alkali treatment and bleaching process, followed by acid hydrolysis (65% H{sub 2}SO{sub 4}, 45 C, 45min) to produce cellulose nanocrystal. The crystalline, structural, morphological and chemical properties of both materials were studied. Result reveals the crystallinity index obtained from X-ray diffraction for cellulose nanocrystal was found higher than extracted cellulose with the value of 60.27% and 57.47%, respectively. Fourier transform infrared showed that the chemical treatments removed most of the hemicellulose and lignin from the pomelo albedo fibre. This has been confirmed further by SEM and TEM for their morphological studies. These results showed that cellulose and cellulose nanocrystal were successfully obtained from pomelo albedo and might be potentially used in producing functional fibres for food application.

Zain, Nor Fazelin Mat; Yusop, Salma Mohamad [Food Science Program, School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor (Malaysia); Ahmad, Ishak [Polymer Research Centre (PORCE), School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor (Malaysia)

2013-11-27T23:59:59.000Z

189

Comparison of low-energy radiation effects in polyethylene and cellulose Jussi Polvi, Kai Nordlund  

E-Print Network (OSTI)

Comparison of low-energy radiation effects in polyethylene and cellulose Jussi Polvi, Kai Nordlund, for a carbon atom in polyethylene chain, and for one of the carbon atoms in cellulose chain. Our analysis shows and on average slightly higher for the carbon atoms in the polyethylene chain than for the target carbon atom

Nordlund, Kai

190

1 Electrospun Polyethylene Oxide/Cellulose Nanocrystal Composite 2 Nanofibrous Mats with Homogeneous and Heterogeneous  

E-Print Network (OSTI)

1 Electrospun Polyethylene Oxide/Cellulose Nanocrystal Composite 2 Nanofibrous Mats(acrylic acid) (PAA),14 polyethylene oxide (PEO),15 poly(lactic 57acid) (PLA),16,17 polystyrene (PS),18 was successfully used 9 to fabricate polyethylene oxide/cellulose nanocrystal (PEO/ 10 CNC) composite nanofibrous

191

The self-heating of damp cellulosic materials: I. High thermal conductivity and diffusivity  

Science Journals Connector (OSTI)

......self-heating of damp cellulosic materials: I. High thermal conductivity...stockpiles of cellulosic materials are analysed. The model...distinct bifurcation diagrams. In particular it is...stockpile sizes for materials prone to self-heating...surfaces by breakage on handling. In such circumstances......

R. A. SISSON; A. SWIFT; G. C. WAKE; B. F. GRAY

1992-01-01T23:59:59.000Z

192

Increased enzyme binding to substrate is not necessary for more efficient cellulose hydrolysis  

Science Journals Connector (OSTI)

...desorption, despite high xylan solubilization, which...inactive enzymes from the surface of cellulose is competitive...the increased fibril surface hydrophilicity as confirmed...enzyme binding, cellulose surface chain extraction, and...substrates and chemical treatment methods used are provided in SI...

Dahai Gao; Shishir P. S. Chundawat; Anurag Sethi; Venkatesh Balan; S. Gnanakaran; Bruce E. Dale

2013-01-01T23:59:59.000Z

193

Evaluation of interphase properties in a cellulose fiber-reinforced polypropylene composite by nanoindentation  

E-Print Network (OSTI)

fiber and polypropylene (PP) matrix in a cellulose fiber-reinforced PP composite were investigatedEvaluation of interphase properties in a cellulose fiber-reinforced polypropylene composite of Material Science, University of Tennessee, Knoxville, TN, United States c Metals and Ceramic Division, Oak

Wang, Siqun

194

Cellulose swelling and dissolution as a tool to study the fiber structure  

E-Print Network (OSTI)

­ methylmorpholine N-oxide and water mixtures, or soda solutions) or in ionic liquids are studied. Some cellulose. Key words: cellulose, swelling, dissolution, N ­ methylmorpholine N-oxide, ionic liquids, structure; 1 cells grow (2) . Whatever the origin of the native fiber cells, some common morphological architecture

Boyer, Edmond

195

Nuclear magnetic relaxation dispersion investigations1 of water retention mechanism by cellulose ethers in mortars2  

E-Print Network (OSTI)

Nuclear magnetic relaxation dispersion investigations1 of water retention mechanism by cellulose : 10.1016/j.cemconres.2012.06.002 #12;2 ABSTRACT22 23 We show how nuclear magnetic spin-lattice relaxation dispersion of protons-water24 (NMRD) can be used to elucidate the effect of cellulose ethers

Boyer, Edmond

196

Hydrogen production from cellulose in a two-stage process combining fermentation and electrohydrogenesis  

E-Print Network (OSTI)

Hydrogen production from cellulose in a two-stage process combining fermentation primarily of: acetic, lactic, succinic, and formic acids and ethanol. An additional 800 ? 290 mL H2/g #12;1. Introduction Biohydrogen production from cellulose has received consid- erable attention

197

Chapter 3 - Emerging Catalysis for 5-HMF Formation from Cellulosic Carbohydrates  

Science Journals Connector (OSTI)

Abstract The main fundamental building blocks of cellulosic biomass are C-6 carbohydrates followed by C-5 carbohydrates. 5-hydroxymethylfurfural (5-HMF) is a potential platform chemical from C-6 carbohydrates for the production of renewable fuels and chemicals. Converting glucose to 5-HMF is a critical step in the utilization of cellulosic biomass because ?-d-glucose is the fundamental building block of cellulose polymer. The current understanding of the mechanisms involved in glucose isomerization to fructose and subsequent dehydration to 5-HMF in different solvents is presented and discussed. New breakthroughs in catalytic systems efficient for the isomerization between aldohexose and ketohexose are reviewed, with a focus on the mechanistic understanding. One of the challenges of cellulosic biomass utilization by a catalytic system is the presence of a large variety of and often in high loadings of minerals. Understanding the effects of the minerals or other contaminants is emphasized. Keywords 5-HMF, Platform chemicals, Cellulose, Carbohydrates

Z. Conrad Zhang

2013-01-01T23:59:59.000Z

199

Assessing Resource Intensity and Renewability of Cellulosic Ethanol Technologies Using Eco-LCA  

Science Journals Connector (OSTI)

Assessing Resource Intensity and Renewability of Cellulosic Ethanol Technologies Using Eco-LCA ... Recognizing the contributions of ecosystem services and the lack of their comprehensive accounting in life cycle assessment (LCA), an in-depth analysis of their contribution in the life cycle of cellulosic ethanol derived from five different feedstocks was conducted, with gasoline and corn ethanol as reference fuels. ... The relative use intensity of natural resources encompassing land and ecosystem goods and services by cellulosic ethanol was estimated using the Eco-LCA framework. ...

Anil Baral; Bhavik R. Bakshi; Raymond L. Smith

2012-01-23T23:59:59.000Z

200

Cellulose hydrolysis in evolving substrate morphologies III: Timescale analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydrolysis Hydrolysis in Evolving Substrate Morphologies III: Time-Scale Analysis Wen Zhou, 1,2 Ying Xu, 1,2 Heinz-Bernd Schu ¨ ttler 3 1 Computational Systems Biology Lab, Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens, Georgia; telephone: 706-542-9779; fax: 706-542-9751; e-mail: xyn@bmb.uga.edu 2 BioEnergy Science Center (BESC), Department of Energy (DOE), Oak Ridge, Tennessee 3 Department of Physics and Astronomy, University of Georgia, Athens, Georgia; telephone: 706-542-3886; fax: 706-542-2492; e-mail: hbs@physast.uga.edu Received 11 December 2009; revision received 4 May 2010; accepted 10 May 2010 Published online 1 June 2010 in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/bit.22814 ABSTRACT: We present a time-scale analysis for the enzy- matic hydrolysis of solid cellulosic substrates,

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


201

Template Synthesis of Nanostructured Metals using Cellulose Nanocrystal  

SciTech Connect

In this chapter, cellulose nanocrystal (CNXL) has been used as a template and reducing agent for synthesizing nanoscale inorganic solids such as metal oxide, metal carbide, and nanocrystalline metals. CNXL selectively nucleates metal or metal oxide phases in ordered arrangements commensurate with the attendant structure and chemistry of the fiber. The reaction has an analogy to the well-known Tollens reagent where addition of an aldehyde or glucose analyte to a glass vessel containing a soluble ammoniacal silver complex causes reduction of the silver to form a mirror on the vessel surface. For the synthesis of TiO2, CNXL produced mesoporous anatase with 5-10 nm particle sizes and 170-200 m2/g surface area after air-calcination. Silica-infiltrated CNXL produced very homogeneous SiC nanowires with 70 nm in diameter at 1400 oC in Ar. For the syntheses of metal nanoparticles, upon addition of aqueous metal ion containing solutions (Cu(II), Ni(II), Ag(I), Au(III), Pd(II), Pt(IV), or even selenite, Se(IV)) into the CNXL suspension, reduction to the metal occurs under hydrothermal conditions to form ordered metal nanostructures. Ni (II) and Cu(II) ions required high temperature (300-400 oC) to be reduced due to their low reduction potentials. However, metal ions including Ag(I), Au(III), Pt(IV), Pd(II), Se(IV) needed lower temperatures (160-200 oC) to be reduced. Enhanced catalytic activity on these templated surfaces has been demonstrated for a methylene-blue dye photo-induced decomposition (Se nanocrystals resident on crystalline cellulose).

Shin, Yongsoon; Exarhos, Gregory J.

2009-11-01T23:59:59.000Z

202

NREL: Continuum Magazine - At $2.15 a Gallon, Cellulosic Ethanol Could Be  

NLE Websites -- All DOE Office Websites (Extended Search)

At $2.15 a Gallon, Cellulosic Ethanol Could Be Cost Competitive At $2.15 a Gallon, Cellulosic Ethanol Could Be Cost Competitive Issue 5 Print Version Share this resource At $2.15 a Gallon, Cellulosic Ethanol Could Be Cost Competitive DOE challenge met-research advances cut costs to produce fuel from non-food plant sources. A photo showing a silhouette of a man wearing glass in a dark room lit only by a band of light consisting or red, blue, and white dots (26186). Enlarge image In NREL's new Energy Systems Integration Facility, the Insight Collaboration Laboratory shows a 3D model of cellulose microfibrils. Photo by Dennis Schroeder, NREL Imagine a near perfect transportation fuel-it's clean, domestic, abundant, and renewable. Now imagine that it's also affordable. Bringing this vision closer to reality was the challenge the U.S.

203

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

OF CELLULOSE AND PRODUCTION OF ETHANOL under auspices of22 Mohammad Riaz ETHANOL FERMENTATION STUDIES II I. A. B.Hydrolyzates to Ethanol J2 Ren-Der Yang

Wilke, C.R.

2011-01-01T23:59:59.000Z

204

Increased enzyme binding to substrate is not necessary for more efficient cellulose hydrolysis  

Science Journals Connector (OSTI)

...ultrastructure, which was reported in a recent review article (1). However, the impact...the Department of Energy Great Lakes Bioenergy Research...based on the values available in the literature for CBH-I acting on cellulose...

Dahai Gao; Shishir P. S. Chundawat; Anurag Sethi; Venkatesh Balan; S. Gnanakaran; Bruce E. Dale

2013-01-01T23:59:59.000Z

205

Energy Department Announces Up to $14 Million for Applying Landscape Design to Cellulosic Bioenergy  

Energy.gov (U.S. Department of Energy (DOE))

The Energy Department today announced up to $14 million to support landscape design approaches that maintain or enhance the environmental and socio-economic sustainability of cellulosic bioenergy through the improvement of feedstock production, logistics systems, and technology development.

206

Breakthrough in Bioenergy: American Process Sells First RIN-qualified Cellulosic Ethanol Shipment  

Energy.gov (U.S. Department of Energy (DOE))

?Imagine powering a plane or car with fuels made from grasses, wood, or other plant residues. This type of fuel, called cellulosic ethanol, has the potential to be a major source of renewable fuel...

207

Graphene for reducing bubble defects and enhancing mechanical properties of graphene/cellulose acetate composite films  

Science Journals Connector (OSTI)

In this study, we have demonstrated a strategy by which graphene was used to reduce the bubble defects and enhance the mechanical properties in graphene/cellulose acetate (Gr/CA) composite films. Mono- and multil...

Lei Liu; Zhigang Shen; Shuaishuai Liang; Min Yi

2014-01-01T23:59:59.000Z

208

Adsorption and viscoelastic properties of cationic xylan on cellulose film using QCM-D  

Science Journals Connector (OSTI)

The adsorption and viscoelastic properties of cationic xylan layers adsorbed from an aqueous electrolyte solution ... 10, 100mM) on a cellulose model surface were studied using quartz crystal microbalance with ....

Sang Hoon Lee; Hak Lae Lee; Hye Jung Youn

2014-06-01T23:59:59.000Z

209

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

the surface was more hydrophilic while the glucan and xylanxylan is a physical barrier that covers up the crystalline cellulose surfacesurface available for enzyme adsorption compared to the looser amorphous structure of xylan.

Qing, Qing

2010-01-01T23:59:59.000Z

210

The molecular basis of the adsorption of xylans on cellulose surface  

Science Journals Connector (OSTI)

In order to model the adsorption of xylan on cellulose, we have simulated, at ... level, the gas phase adsorption of small xylan fragments having 5 skeletal ? (1?...5...), using molecular dynamics simulations. A...

Karim Mazeau; Landry Charlier

2012-04-01T23:59:59.000Z

211

Catalytic transformations of cellulose and its derived carbohydrates into 5-hydroxymethylfurfural, levulinic acid, and lactic acid  

Science Journals Connector (OSTI)

The catalytic transformation of cellulose into key building-block or platform chemicals such as 5-hydoxymethylfurfural (HMF), levulinic acid, and lactic acid under mild conditions, has attracted much attention...

Weiping Deng; Qinghong Zhang; Ye Wang

2014-12-01T23:59:59.000Z

212

Kinetic Study on the Acid-Catalyzed Hydrolysis of Cellulose to Levulinic Acid  

Science Journals Connector (OSTI)

A variety of interesting bulk chemicals is accessible by the acid-catalyzed hydrolysis of cellulose. An interesting example is levulinic acid, a versatile precursor for fuel additives, polymers, and resins. A detailed kinetic study on the acid-catalyzed ...

B. Girisuta; L. P. B. M. Janssen; H. J. Heeres

2007-02-13T23:59:59.000Z

213

Utilization of Vinegar for Isolation of Cellulose Producing Acetic Acid Bacteria  

SciTech Connect

Wastes of traditionally fermented Turkish vinegar were used in the isolation of cellulose producing acetic acid bacteria. Waste material was pre-enriched in Hestrin-Schramm medium and microorganisms were isolated by plating dilution series on HS agar plates The isolated strains were subjected to elaborate biochemical and physiological tests for identification. Test results were compared to those of reference strains Gluconacetobacter xylinus DSM 46604, Gluconacetobacter hansenii DSM 5602 and Gluconacetobacter liquefaciens DSM 5603. Seventeen strains, out of which only three were found to secrete the exopolysaccharide cellulose. The highest cellulose yield was recorded as 0.263+-0.02 g cellulose L{sup -1} for the strain AS14 which resembled Gluconacetobacter hansenii in terms of biochemical tests.

Aydin, Y. Andelib; Aksoy, Nuran Deveci [Chemical Engineering Department of Istanbul Technical University, Ayazaga, Maslak, Istanbul, 34469 (Turkey)

2010-06-17T23:59:59.000Z

214

Modified cellulose synthase gene from 'Arabidopsis thaliana' confers herbicide resistance to plants  

SciTech Connect

Cellulose synthase ('CS'), a key enzyme in the biosynthesis of cellulose in plants is inhibited by herbicides comprising thiazolidinones such as 5-tert-butyl-carbamoyloxy-3-(3-trifluromethyl) phenyl-4-thiazolidinone (TZ), isoxaben and 2,6-dichlorobenzonitrile (DCB). Two mutant genes encoding isoxaben and TZ-resistant cellulose synthase have been isolated from isoxaben and TZ-resistant Arabidopsis thaliana mutants. When compared with the gene coding for isoxaben or TZ-sensitive cellulose synthase, one of the resistant CS genes contains a point mutation, wherein glycine residue 998 is replaced by an aspartic acid. The other resistant mutation is due to a threonine to isoleucine change at amino acid residue 942. The mutant CS gene can be used to impart herbicide resistance to a plant; thereby permitting the utilization of the herbicide as a single application at a concentration which ensures the complete or substantially complete killing of weeds, while leaving the transgenic crop plant essentially undamaged.

Somerville, Chris R.; Scieble, Wolf

2000-10-11T23:59:59.000Z

215

Conduction mechanism of lithium bis(oxalato)boratecellulose acetate polymer gel electrolytes  

Science Journals Connector (OSTI)

Polymer gel electrolytes (PGE) belonging to saltsolventpolymer hybrid systems are prepared using a mixture of lithium bis(oxalato)borate (LiBOB), ?-butyrolactone (?-BL), and cellulose acetate (CA). The increase...

S. Z. Z. Abidin; M. Z. A. Yahya; O. H. Hassan; A. M. M. Ali

2014-12-01T23:59:59.000Z

216

Impact of pretreatment and downstream processing technologies on economics and energy in cellulosic ethanol production  

Science Journals Connector (OSTI)

While advantages of biofuel have been widely reported, studies also highlight the challenges in large scale production of biofuel. Cost of ethanol and process energy use in cellulosic ethanol plants are dependent...

Deepak Kumar; Ganti S Murthy

2011-09-01T23:59:59.000Z

217

Ab initio calculation of the structure of acetate cellulose membranes for reverse osmosis  

Science Journals Connector (OSTI)

The elementary unit of the monoacetate cellulose membrane in lithium, sodium, and potassium chloride solutions was simulated with the Gaussian-98 program package. The results are used for qualitative explanation ...

E. V. Butyrskaya; V. A. Shaposhnik; A. A. Reznikov

2005-01-01T23:59:59.000Z

218

Comparison of cellulose consumption between Coptotermes formosanus and Reticulitermes flavipes (Isoptera: Rhinotermitidae) under laboratory conditions  

E-Print Network (OSTI)

We are interested in determining the effects of subterranean termite soldier ratios on the overall cellulose consumption of Coptotermes formosanus and Reticulitermes flavipes. In nature, Coptotermes formosanus is found in very large colonies and a...

Lancaster, Denise

2007-09-17T23:59:59.000Z

219

Catalytic conversion of cellulose into 5-hydroxymethylfurfural over chromium trichloride in ionic liquid  

Science Journals Connector (OSTI)

An efficient method for converting cellulose into 5-hydroxymethylfurfural (5-HMF) using an inexpensive ionic...36H2O) was developed. The effects of hydrochloric acid loading, catalyst dosage, reaction temperatur...

Shui Wang; Yizhen Du; Wenqian Zhang

2014-10-01T23:59:59.000Z

220

Catalytic conversion of cellulose into 5-hydroxymethylfurfural in high yields via a two-step process  

Science Journals Connector (OSTI)

As a key renewable chemical for plastics and fine chemicals, the preparation of 5-hydroxymethylfurfural (5-HMF) from biomass is an...3 was added which lead to a 5-HMF yield of 73% based on cellulose substrate. Th...

Xinhua Qi; Masaru Watanabe; Taku M. Aida; Richard L. Smith Jr.

2011-10-01T23:59:59.000Z

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


221

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

cellulose and/or hemicellulose to monomer sugars that could be subsequently fermented into ethanol andcellulose and hemicellulose must be broken down fully to monomers for fermentation to ethanol

Qing, Qing

2010-01-01T23:59:59.000Z

222

Comparison of Cellulosic Ethanol Yields from Midwestern Maize and Reconstructed Tallgrass Prairie Systems Managed for Bioenergy  

Science Journals Connector (OSTI)

Maize- and prairie-based systems were investigated as cellulosic feedstocks by conducting a 9ha side-by-side comparison on fertile soils in the Midwestern United States. Maize was grown continuously with adequat...

V. A. Nichols; F. E. Miguez; M. E. Jarchow; M. Z. Liebman; B. S. Dien

2014-12-01T23:59:59.000Z

223

EA-1705: Construction and Operation of a Proposed Cellulosic Biorefinery, Mascoma Corporation, Kinross Charter Township, Michigan  

Energy.gov (U.S. Department of Energy (DOE))

The frontier Project consists of the design, construction and operation of a biorefinery producing ethanol and other co-products from cellulosic materials utilizing a proprietary pretreatment and fermentation process.

224

The quantification of oxygen toxicity by the technique of cellulose acetate electrophoresis of rat serum proteins  

E-Print Network (OSTI)

THE QUANTIFICATION OF OXYGEN TOXICITY BY THE TECHNIQUE OF CELLULOSE ACETATE ELECTROPHORESIS OF RAT SERUM PROTEINS A Thesis by MARCIA WAGNER BARKER Submitted to the Graduate College of Texas A&ii University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE December 1979 Major Subject: Biology THE QUANTIFICATION OF OXYGEN TOXICITY BY THE TECHNIQUE OF CELLULOSE ACETATE ELECTROPHORESIS OF RAT SERUM PROTEINS A Thesis by MARCIA WAGNER BARKER Approved...

Barker, Marcia Wagner

2012-06-07T23:59:59.000Z

225

Isolation of levoglucosan from pyrolysis oil derived from cellulose  

DOE Patents (OSTI)

High purity levoglucosan is obtained from pyrolysis oil derived from cellulose by: mixing pyrolysis oil with water and a basic metal hydroxide, oxide, or salt in amount sufficient to elevate pH values to a range of from about 12 to about 12.5, and adding an amount of the hydroxide, oxide, or salt in excess of the amount needed to obtain the pH range until colored materials of impurities from the oil are removed and a slurry is formed; drying the slurry azeotropically with methyl isobutyl ketone solvent to form a residue, and further drying the residue by evaporation; reducing the residue into a powder; continuously extracting the powder residue with ethyl acetate to provide a levoglucosan-rich extract; and concentrating the extract by removing ethyl acetate to provide crystalline levoglucosan. Preferably, Ca(OH)[sub 2] is added to adjust the pH to the elevated values, and then Ca(OH)[sub 2] is added in an excess amount needed. 3 figures.

Moens, L.

1994-12-06T23:59:59.000Z

226

ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol Process Using High-Impact Feedstock for Commercialization  

Energy.gov (U.S. Department of Energy (DOE))

This pilot-scale integrated biorefinery will produce 250,000 gallons per year of cellulosic ethanol when running at full operational status.

227

Single-step conversion of cellulose to 5-hydroxymethylfurfural (HMF), a versatile platform chemical  

Science Journals Connector (OSTI)

The ability to use cellulosic biomass as feedstock for the large-scale production of liquid fuels and chemicals depends critically on the development of effective low temperature processes. One promising biomass-derived platform chemical is 5-hydroxymethylfurfural (HMF), which is suitable for alternative polymers or for liquid biofuels. While HMF can currently be made from fructose and glucose, the ability to synthesize HMF directly from raw natural cellulose would remove a major barrier to the development of a sustainable HMF platform. Here we report a single-step catalytic process where cellulose as the feed is rapidly depolymerized and the resulting glucose is converted to HMF under mild conditions. A pair of metal chlorides (CuCl2 and CrCl2) dissolved in 1-ethyl-3-methylimidazolium chloride ([EMIM]Cl) at temperatures of 80120C collectively catalyze the single-step process of converting cellulose to HMF with an unrefined 96% purity among recoverable products (at 55.44.0% HMF yield). After extractive separation of HMF from the solvent, the catalytic performance of recovered [EMIM]Cl and the catalysts was maintained in repeated uses. Cellulose depolymerization occurs at a rate that is about one order of magnitude faster than conventional acid-catalyzed hydrolysis. In contrast, single metal chlorides at the same total loading showed considerably less activity under similar conditions.

Yu Su; Heather M. Brown; Xiwen Huang; Xiao-dong Zhou; James E. Amonette; Z. Conrad Zhang

2009-01-01T23:59:59.000Z

228

The proteome and phosphoproteome of Neurospora crassa in response to cellulose, sucrose and carbon starvation  

Science Journals Connector (OSTI)

Abstract Improving cellulolytic enzyme production by plant biomass degrading fungi holds great potential in reducing costs associated with production of next-generation biofuels generated from lignocellulose. How fungi sense cellulosic materials and respond by secreting enzymes has mainly been examined by assessing function of transcriptional regulators and via transcriptional profiling. Here, we obtained global proteomic and phosphoproteomic profiles of the plant biomass degrading filamentous fungus Neurospora crassa grown on different carbon sources, i.e. sucrose, no carbon, and cellulose, by performing isobaric tags for relative and absolute quantification (iTRAQ)-based LCMS/MS analyses. A comparison between proteomes and transcriptomes under identical carbon conditions suggests that extensive post-transcriptional regulation occurs in N. crassa in response to exposure to cellulosic material. Several hundred amino acid residues with differential phosphorylation levels on crystalline cellulose (Avicel) or carbon-free medium vs sucrose medium were identified, including phosphorylation sites in a major transcriptional activator for cellulase genes, CLR1, as well as a cellobionic acid transporter, CBT1. Mutation of phosphorylation sites on CLR1 did not have a major effect on transactivation of cellulase production, while mutation of phosphorylation sites in CBT1 increased its transporting capacity. Our data provides rich information at both the protein and phosphorylation levels of the early cellular responses to carbon starvation and cellulosic induction and aids in a greater understanding of the underlying post-transcriptional regulatory mechanisms in filamentous fungi.

Yi Xiong; Samuel T. Coradetti; Xin Li; Marina A. Gritsenko; Therese Clauss; Vlad Petyuk; David Camp; Richard Smith; Jamie H.D. Cate; Feng Yang; N. Louise Glass

2014-01-01T23:59:59.000Z

229

Single-step conversion of cellulose to 5-hydroxymethylfurfural (HMF), a versatile platform chemical  

SciTech Connect

The ability to use cellulosic biomass as feedstock for the production of fuels and chemicals currently derived from petroleum depends critically on the development of effective low-temperature processes. While HMF, as a versatile platform chemical suitable for use in polymer synthesis or production of liquid biofuels, can currently be made from fructose and glucose, synthesis of HMF directly from raw natural cellulose represents the last major barrier toward the development of a sustainable HMF platform. Here we report an unprecedented single-step pathway that depolymerizes cellulose rapidly under mild conditions and converts the resulting glucose to hydroxymethylfurfural (HMF). A pair of metal chlorides (CuCl2 and CrCl2) dissolved in 1-ethyl-3-methylimidazolium chloride at temperatures of 80-120C catalyzes cellulose depolymerization and the subsequent glucose conversion to HMF with 95% selectivity among recoverable products (at 56% HMF yield). Cellulose depolymerization, which can also be catalyzed by other metalchloride pairs such as CuCl2 paired with PdCl2, CrCl3, or FeCl3, occurs at a rate that is more than one order of magnitude faster than conventional acid-catalyzed hydrolysis. In contrast, single-metal chlorides at the same total loading showed low activity under similar conditions. Mechanistic studies suggest that the C2 hydrogen of the imidazolium ring is activated by the paired metal-chloride catalysts.

Su, Yu; Brown, Heather M.; Huang, Xiwen; Zhou, Xiao Dong; Amonette, James E.; Zhang, Z. Conrad

2009-06-20T23:59:59.000Z

230

Characterization of cellulosic wastes and gasification products from chicken farms  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer The gas chromatography indicated the variable quality of the producer gas. Black-Right-Pointing-Pointer The char had appreciable NPK values, and can be used as a fertiliser. Black-Right-Pointing-Pointer The bio-oil produced was of poor quality, having high moisture content and low pH. Black-Right-Pointing-Pointer Mass and energy balances showed inadequate level energy recovery from the process. Black-Right-Pointing-Pointer Future work includes changing the operating parameters of the gasification unit. - Abstract: The current article focuses on gasification as a primary disposal solution for cellulosic wastes derived from chicken farms, and the possibility to recover energy from this process. Wood shavings and chicken litter were characterized with a view to establishing their thermal parameters, compositional natures and calorific values. The main products obtained from the gasification of chicken litter, namely, producer gas, bio-oil and char, were also analysed in order to establish their potential as energy sources. The experimental protocol included bomb calorimetry, pyrolysis combustion flow calorimetry (PCFC), thermo-gravimetric analyses (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, elemental analyses, X-ray diffraction (XRD), mineral content analyses and gas chromatography. The mass and energy balances of the gasification unit were also estimated. The results obtained confirmed that gasification is a viable method of chicken litter disposal. In addition to this, it is also possible to recover some energy from the process. However, energy content in the gas-phase was relatively low. This might be due to the low energy efficiency (19.6%) of the gasification unit, which could be improved by changing the operation parameters.

Joseph, Paul, E-mail: p.joseph@ulster.ac.uk [School of the Built Environment and the Built Environment Research Institute, University of Ulster, Newtownabbey BT37 0QB, County Antrim, Northern Ireland (United Kingdom); Tretsiakova-McNally, Svetlana; McKenna, Siobhan [School of the Built Environment and the Built Environment Research Institute, University of Ulster, Newtownabbey BT37 0QB, County Antrim, Northern Ireland (United Kingdom)

2012-04-15T23:59:59.000Z

231

Supplementation with xylanase and ?-xylosidase to reduce xylo-oligomer and xylan inhibition of enzymatic hydrolysis of cellulose and pretreated corn stover  

Science Journals Connector (OSTI)

Hemicellulose is often credited with being one of the important physical barriers to enzymatic hydrolysis of cellulose, and acts by blocking enzyme access to the cellulose surface. In addition, our recent researc...

Qing Qing; Charles E Wyman

2011-06-01T23:59:59.000Z

232

CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis  

Science Journals Connector (OSTI)

...and Fratzl, P. (1995). The elementary cellulose fibril in Picea abies...Modifications of cellulose synthase confer resistance to isoxaben and thiazolidinone...polysaccharide composition in disease resistance. Trends Plant Sci. 9 : 203-209...

Clara Sánchez-Rodríguez; Stefan Bauer; Kian Hématy; Friederike Saxe; Ana Belén Ibáñez; Vera Vodermaier; Cornelia Konlechner; Arun Sampathkumar; Markus Rüggeberg; Ernst Aichinger; Lutz Neumetzler; Ingo Burgert; Chris Somerville; Marie-Theres Hauser; Staffan Persson

2012-02-10T23:59:59.000Z

233

NREL: News - NREL Finds a New Cellulose Digestion Mechanism by a  

NLE Websites -- All DOE Office Websites (Extended Search)

114 114 NREL Finds a New Cellulose Digestion Mechanism by a Fast-eating Enzyme CelA digests cellulose faster than enzymes from commercial preparations January 2, 2014 Researchers at the Energy Department's National Renewable Energy Laboratory (NREL) have discovered that an enzyme from a microorganism first found in the Valley of Geysers on the Kamchatka Peninsula in Russia in 1990 can digest cellulose almost twice as fast as the current leading component cellulase enzyme on the market. If the enzyme continues to perform well in larger tests, it could help drive down the price of making lignocellulosic fuels, from ethanol to other biofuels that can be dropped into existing infrastructure. A paper reporting this finding, "Revealing Nature's Cellulase Diversity: The

234

Direct analysis of cellulose in poplar stem by matrixassisted laser desorption/ionization imaging mass spectrometry  

NLE Websites -- All DOE Office Websites (Extended Search)

analysis analysis of cellulose in poplar stem by matrix- assisted laser desorption/ionization imaging mass spectrometry Seokwon Jung 1,3 , Yanfeng Chen 3 , M. Cameron Sullards 1,3 and Arthur J. Ragauskas 1,2,3 * 1 BioEnergy Science Center, Georgia Institute of Technology, 500 10 th St., Atlanta, GA 30332, USA 2 Institute of Paper Science and Technology, Georgia Institute of Technology, 500 10 th St., Atlanta, GA 30332, USA 3 School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA Received 10 July 2010; Revised 9 August 2010; Accepted 23 August 2010 Matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS) was applied to the analysis of the spatial distribution of cellulose on a cross-section of juvenile poplar (Populus deltoids) stems. Microcrystalline cellulose (MCC) was used to optimize matrix (2,5-dihydroxybenzoic

235

Catalytic conversion of cellulosic biomass to ethylene glycol: Effects of inorganic impurities in biomass  

Science Journals Connector (OSTI)

Abstract The effects of typical inorganic impurities on the catalytic conversion of cellulose to ethylene glycol (EG) were investigated, and the mechanism of catalyst deactivation by certain impurities were clarified. It was found that most impurities did not affect the EG yield, but some non-neutral impurities or Ca and Fe ions greatly decreased the EG yield. Conditional experiments and catalyst characterization showed that some impurities changed the pH of the reaction solution and affected the cellulose hydrolysis rate; Ca and Fe cations reacted with tungstate ions and suppressed the retro-aldol condensation. To obtain a high EG yield, the pH of the reaction solution and the concentration of tungstate ions should be respectively adjusted to 5.06.0 and higher than 187ppm. For raw biomass conversion, negative effects were eliminated by suitable pretreatments, and high EG yields comparable to those from pure cellulose were obtained.

Jifeng Pang; Mingyuan Zheng; Ruiyan Sun; Lei Song; Aiqin Wang; Xiaodong Wang; Tao Zhang

2015-01-01T23:59:59.000Z

236

Electrospun and oxidized cellulose materials for environmental remediation of heavy metals in groundwater  

SciTech Connect

This chapter focuses on the use of modified cellulosic materials in the field of environmental remediation. Two different chemical methods were involved in fabricating oxidized cellulose (OC), which has shown promise as a metal ion chelator in environmental applications. Electrospinning was utilized to introduce a more porous structure into an oxidized cellulose matrix. FTIR and Raman spectroscopy were used to study both the formation of OC and its surface complexation with metal ions. IR and Raman spectroscopic data demonstrate the formation of characteristic carboxylic groups in the structure of the final products and the successful formation of OC-metal complexes. Subsequent field tests at the Field Research Site at Oak Ridge National Laboratory confirmed the value of OC for sorption of both U and Th ions.

Han, Dong [Stony Brook University (SUNY); Halada, Gary P. [Stony Brook University (SUNY); Spalding, Brian Patrick [ORNL; Brooks, Scott C [ORNL

2009-12-01T23:59:59.000Z

237

Efficient conversion of cellulose into biofuel precursor 5-hydroxymethylfurfural in dimethyl sulfoxideionic liquid mixtures  

Science Journals Connector (OSTI)

Abstract In recent years, cellulose has received increasing attention as a potential material for the production of biofuels and bio-based chemicals. In this study, a new process for the efficient conversion of cellulose into 5-hydroxymethylfurfural (HMF) was developed by the use of AlCl3 as the catalyst in DMSOionic liquid ([BMIM]Cl) mixtures. Various reaction parameters such as reaction time, reaction temperature, solvent and catalyst dosage were investigated in detail. A high HMF yield of 54.9% was obtained from cellulose at 150C after 9h in a mixed solvent of DMSO[BMIM]Cl (10wt.%). More importantly, the catalytic system could be reused for several times despite of the slight loss of its catalytic activity.

Shaohua Xiao; Bing Liu; Yimei Wang; Zhongfeng Fang; Zehui Zhang

2014-01-01T23:59:59.000Z

238

Ultrastable phosphoglucose isomerase through immobilization of cellulosebinding moduletagged thermophilic enzyme on lowcost highcapacity cellulosic adsorbent  

NLE Websites -- All DOE Office Websites (Extended Search)

Ultra-stable phosphoglucose isomerase through immobilization of cellulose- Ultra-stable phosphoglucose isomerase through immobilization of cellulose- binding module-tagged thermophilic enzyme on low-cost high-capacity cellulosic adsorbent Suwan Myung 1,2 , Xiao-Zhou Zhang 1 , Y.-H. Percival Zhang 1,2,3* Running title: One-step protein purification and immobilization 1 Department of Biological Systems Engineering, Virginia Polytechnic Institute and State University, 210-A Seitz Hall, Blacksburg, VA 24061, USA 2 Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 3 DOE BioEnergy Science Center (BESC), Oak Ridge, TN 37831, USA *Corresponding author. Tel: 540-231-7414; Fax: 540-231-7414; Email: ypzhang@vt.edu Biocatalysts and Bioreactor Design

239

Supplementation with xylanase and beta-xylosidase to reduce xylo-oligomer and xylan inhibition of enzymatic hydrolysis of cellulose and pretreated corn stover  

E-Print Network (OSTI)

in pretreated biomass through conversion of xylan and xylo-dioxide makes conversion of cellulosic biomass to ethanol

Qing, Qing; Wyman, Charles E

2011-01-01T23:59:59.000Z

240

Assembly of Xylanases into Designer Cellulosomes Promotes Efficient Hydrolysis of the Xylan Component of a Natural Recalcitrant Cellulosic Substrate  

Science Journals Connector (OSTI)

...Cellulosomes Promotes Efficient Hydrolysis of the Xylan Component of a Natural Recalcitrant Cellulosic...cellulosomes promotes efficient hydrolysis of the xylan component of a natural recalcitrant cellulosic...hemicelluloses, a major component of which is xylan. In order to enhance enzymatic degradation...

Sarah Moras; Yoav Barak; Yitzhak Hadar; David B. Wilson; Yuval Shoham; Raphael Lamed; Edward A. Bayer

2011-12-01T23:59:59.000Z

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


241

One-Pot Synthesis of 5-Hydroxymethylfurfural by Cellulose Hydrolysis over Highly Active Bimodal Micro/Mesoporous H-ZSM-5 Catalyst  

Science Journals Connector (OSTI)

One-Pot Synthesis of 5-Hydroxymethylfurfural by Cellulose Hydrolysis over Highly Active Bimodal Micro/Mesoporous H-ZSM-5 Catalyst ... Direct synthesis of 5-hydroxymethylfurfural (5-HMF), a useful renewable biofuel and biochemical, was systematically studied by hydrolysis of microcrystalline cellulose over Bimodal-HZ-5 zeolite. ... Microcrystalline cellulose; Hydrolysis; Biomodal-HZ-5; Glucose; 5-Hydroxymethylfurfural ...

Kakasaheb Y. Nandiwale; Nitish D. Galande; Pratika Thakur; Sanjay D. Sawant; Vishal P. Zambre; Vijay V. Bokade

2014-06-16T23:59:59.000Z

242

Strong and Tough Cellulose Nanopaper with High Specific Surface Area and Porosity  

Science Journals Connector (OSTI)

After all NaClO was consumed, the pulp fibers were filtered and washed several times with deionized water until the filtrate solution was neutral. ... 300 mg solid content of cellulose) was diluted to ca. 0.1 wt %, degassed, and filtrated on top of a 0.65 ?m filter membrane (DVPP, Millipore) until a strong hydrogel is formed (see picture of the hydrogel in Figure 1b). ... The results are preliminary but demonstrate the ability of this method to give cellulose aerogels of large surface areas (400-500 m2 g-1) which may be useful as adsorbents, heat/sound insulators, filters, catalyst supports, or carbon aerogel precursors. ...

Houssine Sehaqui; Qi Zhou; Olli Ikkala; Lars A. Berglund

2011-09-02T23:59:59.000Z

243

Cellulose and cellobiose: adventures of a wandering organic chemist in theoretical chemistry  

SciTech Connect

The energies arising from the rotation of free hydroxyl groups in the central glucose residue of a cellulose crystalline assembly, calculated using RHF, DFT, and FMO2/MP2 methods, will be presented. In addition, interactions of this central glucose residue with some of the surrounding residues (selected on the basis of the interaction strengths) are analyzed. The mechanism of acid-catalyzed hydrolysis of cellobiose, which is the repeating unit of cellulose. Energies corresponding to the different steps of this mechanism calculated using RHF and DFT are compared with those previously reported using molecular dynamics calculations and with experimental data.

Baluyut, John

2012-04-03T23:59:59.000Z

244

Land-use change and greenhouse gas emissions from corn and cellulosic  

NLE Websites -- All DOE Office Websites (Extended Search)

Science Science Computing, Environment & Life Sciences Energy Engineering & Systems Analysis Photon Sciences Physical Sciences & Engineering Energy Frontier Research Centers Science Highlights Postdoctoral Researchers Land-use change and greenhouse gas emissions from corn and cellulosic ethanol July 16, 2013 Tweet EmailPrint The greenhouse gas (GHG) emissions that may accompany land-use change (LUC) from increased biofuel feedstock production are a source of debate in the discussion of drawbacks and advantages of biofuels. Estimates of LUC GHG emissions focus mainly on corn ethanol and vary widely. Increasing the understanding of LUC GHG impacts associated with both corn and cellulosic ethanol will inform the on-going debate concerning their magnitudes and

245

Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars  

DOE Patents (OSTI)

A method is described for separating lignocellulosic material into (a) lignin, (b) cellulose, and (c) hemicellulose and dissolved sugars. Wood or herbaceous biomass is digested at elevated temperature in a single-phase mixture of alcohol, water and a water-immiscible organic solvent (e.g., a ketone). After digestion, the amount of water or organic solvent is adjusted so that there is phase separation. The lignin is present in the organic solvent, the cellulose is present in a solid pulp phase, and the aqueous phase includes hemicellulose and any dissolved sugars.

Black, S.K.; Hames, B.R.; Myers, M.D.

1998-03-24T23:59:59.000Z

246

Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars  

DOE Patents (OSTI)

A method for separating lignocellulosic material into (a) lignin, (b) cellulose, and (c) hemicellulose and dissolved sugars. Wood or herbaceous biomass is digested at elevated temperature in a single-phase mixture of alcohol, water and a water-immiscible organic solvent (e.g., a ketone). After digestion, the amount of water or organic solvent is adjusted so that there is phase separation. The lignin is present in the organic solvent, the cellulose is present in a solid pulp phase, and the aqueous phase includes hemicellulose and any dissolved sugars.

Black, Stuart K. (Denver, CO); Hames, Bonnie R. (Westminster, CO); Myers, Michele D. (Dacono, CO)

1998-01-01T23:59:59.000Z

247

Increasing cellulose accessibility is more important than removing lignin: A comparison of cellulose solventbased lignocellulose fractionation and soaking in aqueous ammonia  

NLE Websites -- All DOE Office Websites (Extended Search)

Increasing Increasing Cellulose Accessibility Is More Important Than Removing Lignin: A Comparison of Cellulose Solvent-Based Lignocellulose Fractionation and Soaking in Aqueous Ammonia Joseph A. Rollin, 1 Zhiguang Zhu, 1 Noppadon Sathitsuksanoh, 1,2 Y.-H. Percival Zhang 1,2,3 1 Biological Systems Engineering Department, Virginia Polytechnic Institute and State University, 210-A Seitz Hall, Blacksburg, Virginia 24061; telephone: 1-540-231-7414; fax: þ1- 540-231-3199; e-mail: ypzhang@vt.edu 2 Institute for Critical Technology and Applied Sciences (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, Virginia 3 DOE BioEnergy Science Center (BESC), Oak Ridge, Tennessee Received 18 May 2010; revision received 11 August 2010; accepted 17 August 2010 Published online 1 September 2010 in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/bit.22919

248

Hydrochloric Acid-Catalyzed Levulinic Acid Formation from Cellulose: Data and Kinetic  

E-Print Network (OSTI)

formation initially to HMF forma- tion later. VVC 2011 American Institute of Chemical Engineers AIChE J, 00 and chemicals.1 LA can be produced from glu- cose,2,3 cellulose,4,5 5-hydroxymethyl-2-furfural (HMF),6 normal, and Chemical and Environmental Engineering Dept., Bourns College of Engineering, University of California

California at Riverside, University of

249

Direct in Situ Observation of Synergism between Cellulolytic Enzymes during the Biodegradation of Crystalline Cellulose Fibers  

E-Print Network (OSTI)

Direct in Situ Observation of Synergism between Cellulolytic Enzymes during the Biodegradation types of T. reesei cellulolytic enzymes TrCel6A, TrCel7A, and TrCel7Band their mixtures. TrCel6A and Tr. When acting alone on native cellulose fibers, each of the three enzymes is incapable of significant

Dutcher, John

250

Biopolymer foams - Relationship between material characteristics and foaming behavior of cellulose based foams  

SciTech Connect

Biopolymers are becoming increasingly important to both industry and consumers. With regard to waste management, CO{sub 2} balance and the conservation of petrochemical resources, increasing efforts are being made to replace standard plastics with bio-based polymers. Nowadays biopolymers can be built for example of cellulose, lactic acid, starch, lignin or bio mass. The paper will present material properties of selected cellulose based polymers (cellulose propionate [CP], cellulose acetate butyrate [CAB]) and corresponding processing conditions for particle foams as well as characterization of produced parts. Special focus is given to the raw material properties by analyzing thermal behavior (differential scanning calorimetry), melt strength (Rheotens test) and molecular weight distribution (gel-permeation chromatography). These results will be correlated with the foaming behavior in a continuous extrusion process with physical blowing agents and underwater pelletizer. Process set-up regarding particle foam technology, including extrusion foaming and pre-foaming, will be shown. The characteristics of the resulting foam beads will be analyzed regarding part density, cell morphology and geometry. The molded parts will be tested on thermal conductivity as well as compression behavior (E-modulus, compression strength)

Rapp, F., E-mail: florian.rapp@ict.fraunhofer.de, E-mail: anja.schneider@ict.fraunhofer.de; Schneider, A., E-mail: florian.rapp@ict.fraunhofer.de, E-mail: anja.schneider@ict.fraunhofer.de [Fraunhofer Institute for Chemical Technology ICT (Germany); Elsner, P., E-mail: peter.elsner@ict.fraunhofer.de [Fraunhofer Institute for Chemical Technology ICT, Germany and Karlsruhe Institute of Technology KIT (Germany)

2014-05-15T23:59:59.000Z

251

Complete Genome Sequence of the Cellulose-Degrading Bacterium Cellulosilyticum lentocellum  

SciTech Connect

Cellulosilyticum lentocellum DSM 5427 is an anaerobic, endospore-forming member of the Firmicutes. We describe the complete genome sequence of this cellulose-degrading bacterium; originally isolated from estuarine sediment of a river that received both domestic and paper mill waste. Comparative genomics of cellulolytic clostridia will provide insight into factors that influence degradation rates.

Miller, David A [Cornell University; Suen, Garret [University of Wisconsin, Madison; Bruce, David [Los Alamos National Laboratory (LANL); Copeland, A [U.S. Department of Energy, Joint Genome Institute; Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Han, Cliff [Los Alamos National Laboratory (LANL); Hauser, Loren John [ORNL; Land, Miriam L [ORNL; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Meincke, Linda [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Teshima, Hazuki [Los Alamos National Laboratory (LANL); Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Fox, Brian G. [University of Wisconsin, Madison; Angert, Esther R. [Cornell University; Currie, Cameron [University of Wisconsin, Madison

2011-01-01T23:59:59.000Z

252

Solution Structure of the CBM10 Cellulose Binding Module from Pseudomonas Xylanase A,  

E-Print Network (OSTI)

residues (Tyr8, Trp22, and Trp24), which are exposed and form a flat surface on one face, in a classical). Although there are domains that bind specifically to xylan (denoted xylan-binding modules or XBMs) (4), many xylanases contain domains that bind specifically to cellulose rather than xylan (5). It has been

Williamson, Mike P.

253

Structural insights into a unique cellulase fold and mechanism of cellulose hydrolysis  

Science Journals Connector (OSTI)

...cellulosome presented on the surface of C. thermocellum...cellulosome or displayed on the surface of C. thermocellum...end of cellulose and xylan chains and thus provides...disrupted, after cellulase treatment. Although CBM9...the cellulases to the surface of the...

Joana L. A. Brs; Alan Cartmell; Ana Lusa M. Carvalho; Genny Verz; Edward A. Bayer; Yael Vazana; Mrcia A. S. Correia; Jos A. M. Prates; Supriya Ratnaparkhe; Alisdair B. Boraston; Maria J. Romo; Carlos M. G. A. Fontes; Harry J. Gilbert

2011-01-01T23:59:59.000Z

254

Ab Initio Dynamics of Cellulose Pyrolysis: Nascent Decomposition Pathways at 327 and 600 C  

E-Print Network (OSTI)

reserves in lignocellulosic biomass.1 Fast pyrolysis of lignocellulosic biomass, which involves rapidAb Initio Dynamics of Cellulose Pyrolysis: Nascent Decomposition Pathways at 327 and 600 °C Vishal pyrolysis at 327 and 600 °C using Car-Parrinello molecular dynamics (CPMD) simulations with rare events

Auerbach, Scott M.

255

Aquatic Botany 64 (1999) 381398 Controls on soil cellulose decomposition along a salinity  

E-Print Network (OSTI)

Aquatic Botany 64 (1999) 381­398 Controls on soil cellulose decomposition along a salinity gradient gradient, where nutrients, soil moisture, temperature and salinity among other factors also varied. Our placed at seven marsh sites along the salinity gradient, and soil and in- terstitial water samples were

Brix, Hans

256

X-ray Structure of Mercerized Cellulose II at 1 Resolution  

Science Journals Connector (OSTI)

A revised crystal structure for mercerized cellulose based on high-resolution synchrotron X-ray data collected from ramie fibers is reported (space group P21, a = 8.10(3) , b = 9.03(3) , c = 10.31(5) , ? = 117.10(5); 751 reflections in 304 composite ...

Paul Langan; Yoshiharu Nishiyama; Henri Chanzy

2001-04-18T23:59:59.000Z

257

Recovery and reuse of cellulase catalyst in an enzymatic cellulose hydrolysis process  

DOE Patents (OSTI)

A process for recovering cellulase from the hydrolysis of cellulose, and reusing it in subsequent hydrolyois procedures. The process utilizes a commercial adsorbent that efficiently removes cellulase from reaction products which can be easily removed by simple decantation. 1 fig., 4 tabs.

Woodward, J.

1987-09-18T23:59:59.000Z

258

DOI: 10.1002/cssc.201000426 A Study of the Acid-Catalyzed Hydrolysis of Cellulose  

E-Print Network (OSTI)

or diesel additives by either dehydration of glucose to 5-hydroxymethylfurfural (5- HMF) followed chloride ([Emim][Cl]) could increase the yield of glucose to 89% and limit the yield of 5-hydroxymethylfurfural (5-HMF) to 7%.[8] In this study, HCl was used as the catalyst and the hy- drolysis of cellulose

Iglesia, Enrique

259

Bacterial cellulose based hydrogel (BC-g-AA) and preliminary result of swelling behavior  

SciTech Connect

In this study, hydrogel based on Bacterial cellulose (BC) or local known as Nata de Coco, which grafted with monomer: Acrylic acid (AA) is synthesis by using gamma radiation technique. These hydrogel (BC-g-AA) has unique characteristic whereby responsive to pH buffer solution.

Hakam, Adil; Lazim, Azwan Mat [UKM-MIMOS Laboratory, School of Chemical Sciences and Food Technology, National University of Malaysia (UKM) (Malaysia); Abdul Rahman, I. Irman [Laboratory of Gamma Radiation Instrument, Science Nuclear Program, School of Applied Physics, National University of Malaysia (UKM) (Malaysia)

2013-11-27T23:59:59.000Z

260

Gradient of nanomechanical properties in the interphase of cellulose nanocrystal composites  

E-Print Network (OSTI)

)­poly (acrylic acid) (PAA)­cellulose nanocrystal (CNC) composites. In comparison to the polymer matrix at the interface of CNC to 9.9 GPa in PVA­PAA matrix. It was observed that the existence of PAA increased nanocrystals (CNCs) to PVA and cross linking it using 10 wt.% poly(acrylic acid) (PAA) improves the overall

Endres. William J.

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


261

Sucrose synthase affects carbon partitioning to increase cellulose production and altered cell wall ultrastructure  

Science Journals Connector (OSTI)

...and Paper Industry Useful Method 250 (TAPPI UM-250) (47). Determination of {alpha}-Cellulose...of the Pulp and Paper Industry ( 1991 ) Tappi Useful Method UM-250. Acid-soluble lignin in wood and pulp ( Tappi Press , Atlanta ). 48 Yokoyama T Kadla...

Heather D. Coleman; Jimmy Yan; Shawn D. Mansfield

2009-01-01T23:59:59.000Z

262

The Arabidopsis Cellulose Synthase Complex: A Proposed Hexamer of CESA Trimers in an Equimolar Stoichiometry  

Science Journals Connector (OSTI)

...in the Instructions for Authors ( www.plantcell.org ) is: Ming Tien ( mxt3@psu.edu ). [W] Online version contains Web-only data. The three plant cellulose synthases of secondary cell wall synthesis are present in an equimolar ratio; this 1...

Joseph L. Hill; Jr.; Mustafa B. Hammudi; Ming Tien

2014-12-09T23:59:59.000Z

263

Green Jute-Based Cross-Linked Soy Flour Nanocomposites Reinforced with Cellulose Whiskers and Nanoclay  

Science Journals Connector (OSTI)

Green Jute-Based Cross-Linked Soy Flour Nanocomposites Reinforced with Cellulose Whiskers and Nanoclay ... The extracted CWs alone and in combination with nanoclay were used as reinforcing agents for the preparation of green nanocomposites based on jute fabric and glutaraldehyde (GA) cross-linked soy flour (SF). ...

Murshid Iman; Kusum K. Bania; Tarun K. Maji

2013-04-29T23:59:59.000Z

264

Less is more: Novel cellulose structure requires fewer enzymes to process  

E-Print Network (OSTI)

Laboratory (LANL) and the Great Lakes Bioenergy Research Center (GLBRC). Scientists are investigating columns," says GLBRC's Shishir Chundawat. "The key to cheaper biofuel production is to unravel strategy, currently under development at GLBRC, to selectively alter the cellulose crystal structure may

265

A revised structure and hydrogen bonding system in cellulose II from a neutron fiber diffraction analysis  

SciTech Connect

The crystal and molecular structure and hydrogen bonding system in cellulose II have been revised using new neutron diffraction data extending to 1.2 {angstrom} resolution collected from two highly crystalline fiber samples of mercerized flax. Mercerization was achieved in NaOH/H{sub 2}O for one sample and in NaOD/D{sub 2}O for the other, corresponding to the labile hydroxymethyl moieties being hydrogenated and deuterated, respectively. Fourier difference maps were calculated in which neutron difference amplitudes were combined with phases calculated from two revised X-ray models of cellulose II. The revised phasing models were determined by refinement against the X-ray data set of Kolpak and Blackwell, using the LALS methodology. Both models have two antiparallel chains organized in a P2{sub 1} space group and unit cell parameters: a = 8.01 {angstrom}, b = 9.04 {angstrom}, c = 10.36 {angstrom}, and {gamma} = 117.1{degree}. One has equivalent backbone conformations for both chains but different conformations for the hydroxymethyl moieties: gt for the origin chain and tg for the center chain. The second model based on the recent crystal structures of cellotetraose, has different conformations for the two chains but nearly equivalent conformations for the hydroxymethyl moieties. On the basis of the X-ray data alone, the models could not be differentiated. From the neutron Fourier difference maps, possible labile hydrogen atom positions were identified for each model and refined using LALS. The second model is significantly different from previous proposals based on the crystal structures of cellotetraose, MD simulations of cellulose II, and any potential hydrogen-bonding network in the structure of cellulose II determined in earlier X-ray fiber diffraction studies. The exact localization of the labile hydrogen atoms involved in this bonding, together with their donor and acceptor characteristics, is presented and discussed. This study provides, for the first time, the coordinates of all of the atoms in cellulose II.

Langan, P.; Nishiyama, Y.; Chanzy, H.

1999-11-03T23:59:59.000Z

266

EA-1694: Department of Energy Loan Guarantee to Highlands Ethanol, LLC, for the Cellulosic Ethanol Facility in Highlands County, Florida  

Energy.gov (U.S. Department of Energy (DOE))

This EA will evaluate the environmental impacts of a proposal to issue a Federal loan guarantee to Highlands Ethanol, LLC, for a cellulosic ethanol facility in Highlands County, Florida. This EA is on hold.

267

THE USE OF THE SILICA GEL PLATE FOR DEMONSTRATING THE OCCURRENCE AND ABUNDANCE OF CELLULOSE-DECOMPOSING BACTERIA  

Science Journals Connector (OSTI)

...decomposition of cellulose in soils. Soil Sci., 1, 436. OMELIANSKI, W. 1903-4 tJber die Trennung der Wasserstoff und Methan- Garung der Zellulose. Centrbl. f. Bakteriol., 2 Abt., 11, 369-377. OMELIANSKI, W. 1913 Zur Frage...

Selman A. Waksman; Cornelia Carey

1926-08-01T23:59:59.000Z

268

Cellulosic materials recovered from steam classified municipal solid wastes as feedstocks for conversion to fuels and chemicals  

Science Journals Connector (OSTI)

A process has been developed for the treatment of municipal solid waste to separate and recover the cellulosic biomass from the nonbiomass components. ... highly suitable as a feedstock for conversion to fuel, fe...

Michael H. Eley; Gerald R. Guinn; Joyita Bagchi

1995-09-01T23:59:59.000Z

269

Evaluation of Microbial Communities from Extreme Environments as Inocula in a Carboxylate Platform for Biofuel Production from Cellulosic Biomass  

E-Print Network (OSTI)

The carboxylate biofuels platform (CBP) involves the conversion of cellulosic biomass into carboxylate salts by a mixed microbial community. Chemical engineering approaches to convert these salts to a variety of fuels (diesel, gasoline, jet fuel...

Cope, Julia Lee

2013-08-06T23:59:59.000Z

270

Cellulose and psyllium supplementation in 10 females: the effect on food intake and in vitro fermentation variables  

E-Print Network (OSTI)

fatty acids. Fleming and Rodriguez studied the effect of dietary fibers on fecal volatile fatty acids in five men (ll). The men were fed xylan, fiber-free, cellulose, pectin and corn bran diets. The corn bran resulted in the highest excretion... of volatile fatty acids, followed by pectin, cellulose, fiber-free and xylan respectively. It is evident that both in vitro fermentation and fiber supplementation studies have been employed to determine the impact of fermentation of dietary fiber...

Haynes, Susan Renee

2012-06-07T23:59:59.000Z

271

Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol  

NLE Websites -- All DOE Office Websites (Extended Search)

8 8 June 2010 Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol F. Kabir Kazi, J. Fortman, and R. Anex Iowa State University G. Kothandaraman ConocoPhillips Company D. Hsu, A. Aden, and A. Dutta National Renewable Energy Laboratory National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-6A2-46588 June 2010 Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol F. Kabir Kazi, J. Fortman, and R. Anex

272

Degradation of Cellulose to Organic Acids in its Homogeneous Alkaline Aqueous Solution  

Science Journals Connector (OSTI)

Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemical Physics, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, 230026, P.R. ... Malonic acid (MA), lactic acid (LA), formic acid (FA), and acetic acid (AA) are the major valuable products, among them MA and LA are the top valuable platform molecules for synthesis of bulk chemicals and fuels. ... (21-24) Plenty of research has been reported using ionic liquid as solvent to convert cellulose in its homogeneous solution over solid or liquid catalysts, such as conversion of cellulose to 5-hydroxymethylfurfural (HMF) or lactic acid, etc.(25-27) However, the high-cost of ionic liquids and the difficult in recovery and the difficult in reutilization of ionic liquid limit their application in large scale by now. ...

Lifeng Yan; Xiaoya Qi

2014-01-09T23:59:59.000Z

273

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid Hydrolysis  

SciTech Connect

Cotton linters were partially hydrolyzed in dilute acid and the morphology of remaining macrofibrils studied with Scanning Electron Microscopy (SEM) under various magnifications. The crystal region (microfibril bundles) in the macrofibrils was not altered by hydrolysis, and only amorphous cellulose was hydrolyzed and leached out from the macrofibrils. The diameter of microfibril bundles was 20-30 nm after the amorphous cellulose was removed by hydrolysis. XRD experiments confirm the unaltered diameter of the microfibrils after hydrolysis. The strong stability of these microfibril bundles in hydrolysis limits both the total sugar monomer yield and the size of nano particles or rods produced in hydrolysis. The large surface potential on the remaining microfibril bundles drives the agglomeration of macrofibrils.

Zhao, Haibo; Kwak, Ja Hun; Zhang, Z. Conrad; Brown, Heather M.; Arey, Bruce W.; Holladay, John E.

2007-03-21T23:59:59.000Z

274

Liquefaction of cellulosic wastes. 6: Oxygen compounds in pyrolytic oil and water fractions  

SciTech Connect

Liquid hydrocarbon oil and water have been produced from the liquefaction of cellulosic matter present in municipal solid wastes. The produced pyrolytic oil and water fraction seemed to be contaminated with considerable amounts of oxygen compounds as compared with fuels derived from a petroleum origin. The oxygen compounds included organic acids (fatty and naphthenic acids), phenols, and carbonyl compounds. These classes of oxygen compounds were extracted selectively from the pyrolytic oils and water using chemical extraction methods. Methyl esters of fatty acids and 2,4-dinitrophenylhydrazones of carbonyl compounds were identified by gas chromatography and thin layer chromatography, respectively. It was suggested that the identified oxygen compounds could be produced from the pyrolysis of volatiles (e.g., levoglucosane, which is the primary product of cellulose depolymerization) via different mechanistic pathways.

Gharieb, H.K.; Faramawy, S.; El-Amrousi, F.A.; El-Sabagh, S.M. [Egyptian Petroleum Research Inst., Cairo (Egypt)

1998-07-01T23:59:59.000Z

275

One-step degradation of cellulose to 5-hydroxymethylfurfural in ionic liquid under mild conditions  

Science Journals Connector (OSTI)

Abstract One-step conversion of cellulose to HMF (5-hydroxymethylfurfural) has been achieved by using metal chlorides (CrCl3, CuCl2, SnCl4, WCl6) in [BMIM]Cl. The effects of temperature, reaction time, amount of catalysts, and the purity of [BMIM]Cl on the performance have been studied and discussed in detail. More than 63% yield of HMF and 80% yield of TRS (total reducing sugar) were obtained in [BMIM]Cl with CrCl3 at 120C under atmospheric pressure. Filter paper and cotton were also used as a source for cellulose degradation to HMF, but only a moderate yield of HMF was obtained (40% for filter paper and 12% for cotton). The reutilization of this system was examined and the reaction mechanism was also discussed.

Lilong Zhou; Yiming He; Zhanwei Ma; Runjuan Liang; Tinghua Wu; Ying Wu

2014-01-01T23:59:59.000Z

276

Ionic Liquid?Water Mixtures: Enhanced Kw for Efficient Cellulosic Biomass Conversion  

Science Journals Connector (OSTI)

Departments of Chemistry and ... Under relatively mild conditions (?140 C, 1 atm) and in the absence of added acid catalysts typically employed in biomass conversion, cellulose dissolved in certain ionic liquids (ILs) has been converted into water-soluble reducing sugars in high total reducing sugar yield (up to 97%), or directly into the biomass platform chemical 5-hydroxymethyl furfural (HMF) in high conversion (up to 89%) when CrCl2 is added. ...

Yuetao Zhang; Hongbo Du; Xianghong Qian; Eugene Y.-X. Chen

2010-03-10T23:59:59.000Z

277

The action of Trichoderma viride cellulase on purified and partially purified cellulosic substrates  

E-Print Network (OSTI)

of practical importance are usually fungal in origin, and each particular one is really a complex of enzymes whose overall action is the degradation of cellulose to glucose. The past work has been limited somewhat in that although many fungi produce... digestion some workers have used the culture filtrate with no special treatments other than filtration through glass wool and pH adjustment (24). In the past, attempts have been made to convert wood to an energy source for ruminant animal nutrition...

Villarreal, Anita

1972-01-01T23:59:59.000Z

278

Physical Energy Accounting in California: A Case Study of Cellulosic Ethanol Production  

SciTech Connect

California's target for greenhouse gas reduction in part relies on the development of viable low-carbon fuel alternatives to gasoline. It is often assumed that cellulosic ethanol--ethanol made from the structural parts of a plant and not from the food parts--will be one of these alternatives. This study examines the physical viability of a switchgrass-based cellulosic ethanol industry in California from the point of view of the physical requirements of land, water, energy and other material use. Starting from a scenario in which existing irrigated pastureland and fiber-crop land is converted to switchgrass production, the analysis determines the total acreage and water supply available and the resulting total biofuel feedstock output under different assumed yields. The number and location of cellulosic ethanol biorefineries that can be supported is also determined, assuming that the distance from field to biorefinery would be minimized. The biorefinery energy input requirement, available energy from the fraction of biomass not converted to ethanol, and energy output is calculated at various levels of ethanol yields, making different assumptions about process efficiencies. The analysis shows that there is insufficient biomass (after cellulose separation and fermentation into ethanol) to provide all the process energy needed to run the biorefinery; hence, the purchase of external energy such as natural gas is required to produce ethanol from switchgrass. The higher the yield of ethanol, the more external energy is needed, so that the net gains due to improved process efficiency may not be positive. On 2.7 million acres of land planted in switchgrass in this scenario, the switchgrass outputproduces enough ethanol to substitute for only 1.2 to 4.0percent of California's gasoline consumption in 2007.

Coughlin, Katie; Fridley, David

2008-07-17T23:59:59.000Z

279

Nano-fibrillated cellulose-zeolites based new hybrid composites aerogels with super thermal insulating properties  

Science Journals Connector (OSTI)

Abstract Aerogel monoliths were prepared using combinations of cellulose microfibers, cellulose nanofibers and nanozeolites. It was shown that these hybrid materials have tunable thermal conductivity and mechanical properties. Thermal conductivity value as low as 18mWm?1K?1 was obtained that confirms the super-insulation ability of these new fibrous aerogels. Synergism on the thermal conductivity properties was shown by adjunction of nanozeolites to cellulose microfibrils by reaching pore size lower than 100nm that significantly reduces the thermal conductivity of the hybrid aerogels as predicted by Knudsen et al. In one hand, these properties seem to depend strongly on the interactions between the component and their relative fractions. On the other hand, the addition of nanofibrils to micrometric fibers based aerogel yields a significant increase of its stiffness. The higher improvement of the stiffness was obtained when nanofibrils with high surface charge are added. This study certainly opens a new investigation field to optimize the thermal conductivity properties of hybrid nanocellulose based aerogels.

Dounia Bendahou; Abdelkader Bendahou; Bastien Seantier; Yves Grohens; Hamid Kaddami

2014-01-01T23:59:59.000Z

280

Fabrication and characterization of nanofibrillated cellulose and its aerogels from natural pine needles  

Science Journals Connector (OSTI)

Abstract To obtain the nanofibriled cellulose from natural pine needles, a combination of chemical pretreatments and subsequently ultrasonic treatments was employed for removing the hemicelluloses and lignins and splitting the bundled cellulose into pine needle nanofibres. Using SEM and diameter distribution method, it was confirmed that the obtained pine needle nanofibres had a narrow diameter from 30-70nm. The crystalline type of the pine needle nanofibres was the cellulose I type. The crystallinity reached 66.19%, which was increased by 7.61% as compared with the raw material pine needles. The TGA and DTG results showed that the degradation temperature of the nanofibres was increased to approximately 267C and 352C compared with 221C and 343C of the raw material fibres, respectively. Furthermore, the highly flexible and ultralight pine needle nanofibres aerogels were prepared from the aqueous pine needle nanofibres solution using the freezing-drying technique. Aerogels were studied by SEM observation and nitrogen gas adsorption. The mechanical properties were measured in compression for aerogels. This study provides a new opportunity to fabricate novel nanomaterials from waste biomass materials, which is crucial for the fully utilising of abundant biomass resources.

Shaoliang Xiao; Runan Gao; Yun Lu; Jian Li; Qingfeng Sun

2014-01-01T23:59:59.000Z

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


281

X-ray Studies of Regenerated Cellulose Fibers Wet Spun from Cotton Linter Pulp in NaOH/Thiourea Aqueous Solutions  

SciTech Connect

Regenerated cellulose fibers were fabricated by dissolution of cotton linter pulp in NaOH (9.5 wt%) and thiourea (4.5 wt%) aqueous solution followed by wet-spinning and multi-roller drawing. The multi-roller drawing process involved three stages: coagulation (I), coagulation (II) and post-treatment (III). The crystalline structure and morphology of regenerated cellulose fiber was investigated by synchrotron wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) techniques. Results indicated that only the cellulose II crystal structure was found in regenerated cellulose fibers, proving that the cellulose crystals were completely transformed from cellulose I to II structure during spinning from NaOH/thiourea aqueous solution. The crystallinity, orientation and crystal size at each stage were determined from the WAXD analysis. Drawing of cellulose fibers in the coagulation (II) bath (H{sub 2}SO{sub 4}/H{sub 2}O) was found to generate higher orientation and crystallinity than drawing in the post-treatment (III). Although the post-treatment process also increased crystal orientation, it led to a decrease in crystallinity with notable reduction in the anisotropic fraction. Compared with commercial rayon fibers fabricated by the viscose process, the regenerated cellulose fibers exhibited higher crystallinity but lower crystal orientation. SAXS results revealed a clear scattering maximum along the meridian direction in all regenerated cellulose fibers, indicating the formation of lamellar structure during spinning.

Chen,X.; Burger, C.; Fang, D.; Ruan, D.; Zhang, L.; Hsiao, B.; Chu, B.

2006-01-01T23:59:59.000Z

282

Reversion and dehydration reactions of glucose during the dilute sulfuric acid hydrolysis of cellulose  

SciTech Connect

The inaccessibility of all glycosidic bonds necessitates industrial conversion schemes which employ a dilute acid catalyst at high temperatures. Process conditions also promote further reactions of glucose via the reversion and dehydration pathways. Quantitative determination of the yields of the major reversion and dehydration products is important for understanding and predicting the amounts of these materials expected under envisioned industrial operating conditions. Microcrystalline cellulose (Avicel) was hydrolyzed with sulfuric acid (0.0-1.25 wt.%), at high temperatures (160-250/sup 0/C), and at a 3:1 liquid-to-solid ratio. The hydrolysis was monitored by evaluating the amount of cellulose remaining and the yields of glucose, solid humin, levulinic acid, formic acid, hydroxymethylfurfural (HMF), and reversion products as a function of the aforementioned reaction conditions. Analysis of the reversion products required the development of a technique for the quantitation of trace carbohydrates in complex mixtures and led to the development of a reduction/permethylation gas chromatographic procedure. Cellulose hydrolysis followed pseudo-homogeneous first-order kinetics. Glucose yield was adequately described as consecutive first-order reactions. Anhydrosugars formed via reversion followed equilibrium reaction kinetics whereas the disaccharides did not. Total reversion product yields approached 10% at 250/sup 0/C. Quantitative determination of the major dehydration products provided important information concerning the destruction of glucose. HMF was produced in up to 12% yields based on the theoretical amount of glucose available, and furfural was detected in up to 5% yields. A carbon mass balance based on the determined product yields revealed that approximately 90% of all carbon was accounted for at maximum glucose yields.

Helm, R.F.

1987-01-01T23:59:59.000Z

283

Solid-state flexible polyaniline/silver cellulose nanofibrils aerogel supercapacitors  

Science Journals Connector (OSTI)

Abstract Hereby we report solid-state flexible aerogel supercapacitors fabricated from cellulose nanofibrils (CNF), Ag and polyaniline (PANI) nanoparticles. The electrochemical performances of PANI/Ag/CNF supercapacitors were characterized by cyclic voltammetry, galvanostatic chargedischarge curves and electric impedance spectroscopy. The specific capacitance was calculated to be 176mF/cm2 at 10mVs?1 from cyclic voltammetry. This value is significantly higher than most flexible supercapacitors reported in literature. The electrochemical properties of the as-fabricated supercapacitors also remain the same when they are bent with different bending radius.

Xiaodan Zhang; Ziyin Lin; Bo Chen; Wei Zhang; Sudhir Sharma; Wentian Gu; Yulin Deng

2014-01-01T23:59:59.000Z

284

Steam Gasification of Cellulose with Cobalt Catalysts in a Fluidized Bed Reactor  

Science Journals Connector (OSTI)

The catalytic performance of Co/MgO catalysts for the treatment of tar derived from cellulose steam gasification in a bubbling fluidized bed gasifier of 22 mm i.d. and 500 mm height was investigated by means of two different methods:? hot gas cleaning in a fixed bed reactor after the fluidized bed gasifier (secondary method) and treatment inside the gasifier with catalyst as a fluidizing medium (primary method). ... From this perspective, developing a more effective catalyst is essential for scaling down the plant size while still facilitating high and stable catalytic performance. ... At 720-760, space-times 0.10-0.20 s, catalyst sizes <1.0 ...

Kazuhiko Tasaka; Takeshi Furusawa; Atsushi Tsutsumi

2007-01-19T23:59:59.000Z

285

Compositions for enhancing hydroysis of cellulosic material by cellulolytic enzyme compositions  

DOE Patents (OSTI)

The present invention relates to compositions comprising a GH61 polypeptide having cellulolytic enhancing activity and an organic compound comprising a carboxylic acid moiety, a lactone moiety, a phenolic moiety, a flavonoid moiety, or a combination thereof, wherein the combination of the GH61 polypeptide having cellulolytic enhancing activity and the organic compound enhances hydrolysis of a cellulosic material by a cellulolytic enzyme compared to the GH61 polypeptide alone or the organic compound alone. The present invention also relates to methods of using the compositions.

Quinlan, Jason; Xu, Feng; Sweeney, Matthew; Johansen, Katja Salomon

2014-09-30T23:59:59.000Z

286

Cellulose solvent- and organic solvent-based lignocellulose fractionation enabled efficient sugar release from a variety of lignocellulosic feedstocks  

NLE Websites -- All DOE Office Websites (Extended Search)

Cellulose solvent- and organic solvent-based lignocellulose fractionation ena- Cellulose solvent- and organic solvent-based lignocellulose fractionation ena- bled efficient sugar release from a variety of lignocellulosic feedstocks Noppadon Sathitsuksanoh, Zhiguang Zhu, Y.-H. Percival Zhang PII: S0960-8524(12)00712-2 DOI: http://dx.doi.org/10.1016/j.biortech.2012.04.088 Reference: BITE 9966 To appear in: Bioresource Technology Received Date: 29 February 2012 Revised Date: 21 April 2012 Accepted Date: 21 April 2012 Please cite this article as: Sathitsuksanoh, N., Zhu, Z., Percival Zhang, Y.-H., Cellulose solvent- and organic solvent- based lignocellulose fractionation enabled efficient sugar release from a variety of lignocellulosic feedstocks, Bioresource Technology (2012), doi: http://dx.doi.org/10.1016/j.biortech.2012.04.088 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers

287

Finding of No Significant Impact for the Proposed Construction and Operation of a Cellulosic Ethanol Plant, Treutlen County, Georgia  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

05 05 October 15, 2007 FINDING OF NO SIGNIFICANT IMPACT for the PROPOSED CONSTRUCTION AND OPERATION OF A CELLULOSIC ETHANOL PLANT, TREUTLEN COUNTY, GEORGIA SUMMARY: The U. S. Department of Energy (DOE) conducted an environmental assessment (EA) that analyzed the potential impacts associated with the construction and operation of a proposed cellulosic ethanol plant in Treutlen County, Georgia. DOE, through its Golden Field Office, in Golden, Colorado, would provide funding to Range Fuels, Inc., a Colorado based corporation, to support the construction and initial operation of the proposed plant. All discussion, analysis and findings related to the potential impacts of construction and operation ofthe proposed cellulosic ethanol plant (including the applicant-committed practices presented in the Proposed Action) are contained in the Final EA. The Final EA is hereby incorporated

288

Develop and Demonstrate the Cellulose to Ethanol Process: Executive Summary of the Final Technical Report, 17 September 1980 - 17 March 1982  

SciTech Connect

The Biomass Research Center at the University of Arkansas was contracted by the Solar Energy Research Institute to 'Develop and Demonstrate the Cellulose to Ethanol Process.' The purpose of the contract was to accelerate site selection, site specific engineering, and research and development leading to the determination of the feasibility of economically operating a cellulose to ethanol commercial scale plant.

Not Available

1982-01-01T23:59:59.000Z

289

A Novel Method for the Determination of Carbonyl Groups in Cellulosics by Fluorescence Labeling. 3. Monitoring Oxidative Processes  

Science Journals Connector (OSTI)

This work, as the third and last part of this series, gives four illustrative examples, which are not only scientifically interesting but also industrially relevant:? solutions of cellulose in N-methylmorpholine-N-oxide (NMMO) as used in the Lyocell process; alkalization and aging of pulp in 18% NaOH as the initial step in the viscose rayon production; electron beaming of pulp as a means of activation for further processing to derivatives; cellulose changes as occurring upon prolonged drying and storage of pulp under thermal stress. ... It was evident that both processes, carbonyl generation and chain shortening, were closely interrelated and proceeded simultaneously. ...

Antje Potthast; Jrgen Rhrling; Thomas Rosenau; Andrea Borgards; Herbert Sixta; Paul Kosma

2003-02-27T23:59:59.000Z

290

Fermentation of pectin and cellulose to short chain fatty acids: a comparative study with humans, baboons, pigs, and rats  

E-Print Network (OSTI)

%I@ W, W, '. '" yW~, t . . . M~~~)~ '1 r FERMENTATION OF PECTIN AND CELLULOSE TO SHORT CHAIN FATTY ACIDS: A COMPARATIVE STUDY WITH HUMANS, BABOONS, PIGS, AND RATS A Thesis by LEONILDE NONITA VILLALBA IL W I Z IJ Z 4 Z 4 2 5 V Z I... 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: Nutrition FERMENTATION OF PECTIN AND CELLULOSE TO SHORT CHAIN FATTY ACIDS: A...

Villalba, Leonilde Nonita

1989-01-01T23:59:59.000Z

291

Catalytic conversion of carbohydrates into 5-hydroxymethylfurfural over cellulose-derived carbonaceous catalyst in ionic liquid  

Science Journals Connector (OSTI)

Abstract Three environmental-benign and low-cost carbon-based solid acid catalysts containing SO3H, COOH and phenolic OH groups were prepared and used for the conversion of glucose into 5-hydroxymethylfurfural (HMF) in ionic liquid 1-butyl-3-methylimidazolium chloride ([BMIM]Cl). The results demonstrated that cellulose-derived carbonaceous catalyst (CCC) possessed the highest catalytic activity, which resulted in 46.4% HMF yield at 160C for only 15min. In addition, the reaction kinetics for the conversion of glucose into HMF over CCC was fitted with the first-order rate equation. The slightly-deactivated CCC after four successive reaction runs could be easily regenerated by a simple carbonization and sulfonation process. More gratifyingly, the combination of CCC and [BMIM]Cl were confirmed to be suitable for converting other carbohydrates such as fructose, sucrose, maltose, cellobiose, starch and cellulose into HMF. Particularly, a plausible mechanism involving hydrolysis, isomerization and dehydration for the conversion of carbohydrates into HMF was also proposed.

Lei Hu; Geng Zhao; Xing Tang; Zhen Wu; Jiaxing Xu; Lu Lin; Shijie Liu

2013-01-01T23:59:59.000Z

292

Significance of xylan on the stability and water interactions of cellulosic nanofibrils  

Science Journals Connector (OSTI)

Abstract In this paper, the significance of xylan on the behaviour of kraft birch pulp based nanofibrillated cellulose (CNF) is discussed. The influence of CNF xylan content on fibril morphology, charge and stability as well as on the film formation ability was investigated, and the features detected on nanoscale and on macroscale are compared. In addition to this, the ability of fibrils to uptake water molecules were investigated by bulk and surface sensitive methods which are dynamic water sorption analysis (DVS) and quartz crystal microbalance with dissipation monitoring (QCM-D) equipped with the humidity module, respectively. Surface xylan plays a significant role as an electrosteric stabilizer in dilute CNF dispersions when the surface forces are dominant whereas the removal of xylan drastically changes the CNF dispersion properties. The settling of the unstable CNF dispersions displays behaviour which is typical for hindered sedimentation. When considering thin nanoscale layers of CNF, nanofibrillated cellulosic materials with high content of surface xylan has somewhat higher ability to bind water molecules. However, it seems that in more concentrated CNF dispersions where the fibrillar network itself plays also a decisive role, especially with respect to film formation ability, the impact of xylan diminishes. Solvent cast macroscale CNF films are still enough dense to maintain good oxygen barrier performance at higher humid conditions although agglomeration tendency of fibrils is higher due to the excessive xylan removal. These findings are of high relevance when considering nanocellulosic materials, especially in the form of gels and films, as templates for high added value material solutions.

Tiia-Maria Tenhunen; Maria Soledad Peresin; Paavo A. Penttil; Jaakko Pere; Ritva Serimaa; Tekla Tammelin

2014-01-01T23:59:59.000Z

293

Cellulose nanocrystals (CNC) as carriers for a spirooxazine dye and its effect on photochromic efficiency  

Science Journals Connector (OSTI)

Abstract Nanocrystalline cellulose (CNC) as a renewable/sustainable material, has received much attention. Herein we studied CNC as carriers for a hydrophobic spirooxazine (SO)-based dye, 1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3?-[3H]naphtha[2,1-b][1,4]oxazine], which may have potential applications in reversible memory photo-devices, textiles, photo-sensitive paper coatings, and inkjet printing inks. Due to the high cost and water-insolubility of this dye, it is desirable to improve its coloration efficiency and water-dispersibility. The experimental approach was to use CNC as carriers for the SO dye, thus obtaining a stable photochromic dye in aqueous systems. Transmission electron microscope (TEM) observation confirmed that the SO dye adsorbed on the surface of the CNC, which functioned as carriers for the photochromic dye. An impregnation process was adopted to anchor the dye onto cellulosic paper. It was found that the use of CNC resulted in a significant improvement in the SO coloration efficiency. The color stability and fatigue resistance were also studied. The use of CNC as carriers for a hydrophobic compound, its enhancement of associated properties, and its subsequent application were demonstrated.

Bo Sun; Qingxi Hou; Zhibin He; Zehua Liu; Yonghao Ni

2014-01-01T23:59:59.000Z

294

Modification of Corn Starch Ethanol Refinery to Efficiently Accept Various High-Impact Cellulosic Feedstocks  

SciTech Connect

The goal of the Corn-to-Cellulosic Migration (CCM) pilot facility was to demonstrate the implementation of advanced technologies and methods for conversion of non-food, cellulosic feedstocks into ethanol, assess the economics of the facility and evaluate potential environmental benefits for biomass to fuels conversion. The CCM project was comprised of design, build, and operate phases for the CCM pilot facility as well as research & development, and modeling components. The CCM pilot facility was designed to process 1 tonne per day of non-food biomass and biologically convert that biomass to ethanol at a rate of 70 gallons per tonne. The plant demonstrated throughputs in excess of 1 tonne per day for an extended run of 1400 hours. Although target yields were not fully achieved, the continuous operation validated the design and operability of the plant. These designs will permit the design of larger scale operations at existing corn milling operations or for greenfield plants. EdeniQ, a partner in the project and the owner of the pilot plant, continues to operate and evaluate other feedstocks.

Derr, Dan

2013-12-30T23:59:59.000Z

295

Electrospun carboxymethyl cellulose acetate butyrate (CMCAB) nanofiber for high rate lithium-ion battery  

Science Journals Connector (OSTI)

Abstract Cellulose derivative CMCAB was synthesized, and nanometer fiber composite material was obtained from lithium iron phosphate (LiFePO4, LFP)/CMCAB by electrospinning. Under the protection of inert gas, modified LFP/carbon nanofibers (CNF) nanometer material was obtained by carbonization in 600C. IR, TG-DSC, SEM and EDS were performed to characterize their morphologies and structures. LFP/CNF composite materials were assembled into lithium-ion battery and tested their performance. Specific capacity was increased from 147.6mAhg?1 before modification to 160.8mAhg?1 after modification for the first discharge at the rate of 2C. After 200 chargedischarge cycles, when discharge rate was increased from 2C to 5C to 10C, modified battery capacity was reduced from 152.4mAhg?1 to 127.9mAhg?1 to 106mAhg?1. When the ratio was reduced from 10C to 5C to 2C, battery capacity can be quickly approximate to the original level. Cellulose materials that were applied to lithium battery can improve battery performance by electrospinning.

Lei Qiu; Ziqiang Shao; Mingshan Yang; Wenjun Wang; Feijun Wang; Long Xie; Shaoyi Lv; Yunhua Zhang

2013-01-01T23:59:59.000Z

296

Case Study- Steam System Improvements at Dupont Automotive Marshall Laboratory  

E-Print Network (OSTI)

and implement small scale cogeneration. These recommendations included reducing the medium pressure steam distribution to low pressure, eliminating the medium pressure to low pressure reducing stations, installing a back pressure steam turbine generator...

Larkin, A.

297

Complete genome sequence of the marine, cellulose and xylan degrading bacterium Glaciecola sp. 4H-3-7+YE-5  

SciTech Connect

Glaciecola sp. 4H-3-7+YE-5 was isolated from deep sea sediments at Suruga Bay in Japan and is capable of efficiently hydrolyzing cellulose and xylan. The complete genome sequence of Glaciecola sp. 4H-3-7+YE-5 revealed several genes encoding putatively novel glycoside hydrolases associated with plant biomass degradation.

Klippel, Dr Barbara [Technische Universitat Hamburg-Harburg (Hamburg University of Technology); Bruce, David [Los Alamos National Laboratory (LANL); Davenport, Karen W. [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Han, James [U.S. Department of Energy, Joint Genome Institute; Han, Shunsheng [Los Alamos National Laboratory (LANL); Land, Miriam L [ORNL; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Pennacchio, Len [U.S. Department of Energy, Joint Genome Institute; Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Wiebusch, Sigrid [Technische Universitat Hamburg-Harburg (Hamburg University of Technology); Basner, Alexander [Technische Universitat Hamburg-Harburg (Hamburg University of Technology); Abe, Fumiyoshi [Japan Agency for Marine-Earth Science and Technology (JAMSTEC); Horikoshi, Koki [Japan Agency for Marine-Earth Science and Technology (JAMSTEC); Antranikian, Garabed [Technische Universitat Hamburg-Harburg (Hamburg University of Technology)

2011-01-01T23:59:59.000Z

298

Contribution of a Xylan-Binding Module to the Degradation of a Complex Cellulosic Substrate by Designer Cellulosomes  

Science Journals Connector (OSTI)

...ENGINEERING Contribution of a Xylan-Binding Module to the Degradation...The intrinsic cellulose/xylan-binding module (XBM) of...adaptor protein and a cell-surface anchoring protein. J. Bacteriol...121-124. Contribution of a xylan-binding module to the degradation...

Sarah Moras; Yoav Barak; Jonathan Caspi; Yitzhak Hadar; Raphael Lamed; Yuval Shoham; David B. Wilson; Edward A. Bayer

2010-04-16T23:59:59.000Z

299

THE JOURNAL OF CHEMICAL PHYSICS 135, 134506 (2011) Simulating infrared spectra and hydrogen bonding in cellulose I  

E-Print Network (OSTI)

lignocellulosic biomass to biofuels.4,5 Pyrolysis involves thermal decomposition usually in the absence of oxygen pyrolysis is important in devel- oping efficient technologies for the conversion of biomass. In this article to be the first step in cellulose pyrolysis. We have performed molecular dynamics simu- lations at constant

Auerbach, Scott M.

300

Transitions in biofuel technologies: An appraisal of the social impacts of cellulosic ethanol using the Delphi method  

Science Journals Connector (OSTI)

Abstract The sustainability of biofuels produced from food crops has become a focus of public and scientific scrutiny in the past few years. In the case of ethanol production, advanced technologies aim at avoiding controversy by using instead cellulosic biomass contained in wastes, residues and dedicated energy crops. However, despite the positive expectations that drive the development of the so-called cellulosic ethanol, sustainability challenges remain to be elucidated. Expecting to contribute to closing the gap in the field of the social assessment of biofuels, this paper reports and analyses the results of a Delphi survey that explored the perception of biofuel experts from different countries on potential social impacts of cellulosic ethanol. The complexity of appraising impacts emerges as one important conclusion of the study along with the realisation that these will be context-specific. Except for the case of municipal solid waste used as feedstock, such a technological transition might not be able to ameliorate the issues already faced by conventional ethanol, especially when production is based in poorer countries. This is because impacts of cellulosic ethanol depend upon both the technical dimension of its production and the socio-political context of locations where production might take place.

Barbara E. Ribeiro; Miguel A. Quintanilla

2015-01-01T23:59:59.000Z

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


301

Interactions of Endoglucanases with Amorphous Cellulose Films Resolved by Neutron Reflectometry and Quartz Crystal Microbalance with Dissipation Monitoring  

SciTech Connect

A study of the interaction of four endoglucanases with amorphous cellulose films by neutron reflectometry (NR) and quartz crystal microbalance with dissipation monitoring (QCM-D) is reported. The endoglucanases include a mesophilic fungal endoglucanase (Cel45A from H. insolens), a processive endoglucanase from a marine bacterium (Cel5H from S. degradans), and two from thermophilic bacteria (Cel9A from A. acidocaldarius and Cel5A from T. maritima). The use of amorphous cellulose is motivated by the promise of ionic liquid pretreatment as a second generation technology that disrupts the native crystalline structure of cellulose. The endoglucanases displayed highly diverse behavior. Cel45A and Cel5H, which possess carbohydrate-binding modules (CBMs), penetrated and digested within the bulk of the films to a far greater extent than Cel9A and Cel5A, which lack CBMs. While both Cel45A and Cel5H were active within the bulk of the films, striking differences were observed. With Cel45A, substantial film expansion and interfacial broadening were observed, whereas for Cel5H the film thickness decreased with little interfacial broadening. These results are consistent with Cel45A digesting within the interior of cellulose chains as a classic endoglucanase, and Cel5H digesting predominantly at chain ends consistent with its designation as a processive endoglucanase.

Cheng, Gang [Joint Bioenergy Institute; Liu, Zelin [Virginia Polytechnic Institute and State University (Virginia Tech); Kent, Michael S [Sandia National Laboratories (SNL); Majewski, Jaroslaw [Los Alamos National Laboratory (LANL); Michael, Jablin [Los Alamos National Laboratory (LANL); Jaclyn, Murton K [Sandia National Laboratories (SNL); Halbert, Candice E [ORNL; Datta, Supratim [Joint Bioenergy Institute; Chao, Wang [Virginia Polytechnic Institute and State University (Virginia Tech); Brown, Page [Sandia National Laboratories (SNL)

2012-01-01T23:59:59.000Z

302

Structure Study of Cellulose Fibers Wet-Spun from Environmentally Friendly NaOH/Urea Aqueous Solutions  

SciTech Connect

In this study, structure changes of regenerated cellulose fibers wet-spun from a cotton linter pulp (degree of polymerization {approx}620) solution in an NaOH/urea solvent under different conditions were investigated by simultaneous synchrotron wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS). WAXD results indicated that the increase in flow rate during spinning produced a better crystal orientation and a higher degree of crystallinity, whereas a 2-fold increase in draw ratio only affected the crystal orientation. When coagulated in a H{sub 2}SO{sub 4}/Na{sub 2}SO{sub 4} aqueous solution at 15 {sup o}C, the regenerated fibers exhibited the highest crystallinity and a crystal orientation comparable to that of commercial rayon fibers by the viscose method. SAXS patterns exhibited a pair of meridional maxima in all regenerated cellulose fibers, indicating the existence of a lamellar structure. A fibrillar superstructure was observed only at higher flow rates (>20 m/min). The conformation of cellulose molecules in NaOH/urea aqueous solution was also investigated by static and dynamic light scattering. It was found that cellulose chains formed aggregates with a radius of gyration, R{sub g}, of about 232 nm and an apparent hydrodynamic radius, R{sub h}, of about 172 nm. The NaOH/urea solvent system is low-cost and environmentally friendly, which may offer an alternative route to replace more hazardous existing methods for the production of regenerated cellulose fibers.

Chen,X.; Burger, C.; Wan, F.; Zhang, J.; Rong, L.; Hsiao, B.; Chu, B.; Cai, J.; Zhang, L.

2007-01-01T23:59:59.000Z

303

Phase II Nuclide Partition Laboratory Study Influence of Cellulose Degradation Products on the Transport of Nuclides from SRS Shallow Land Burial Facilities  

SciTech Connect

Degradation products of cellulosic materials (e.g., paper and wood products) can significantly influence the subsurface transport of metals and radionuclides. Codisposal of radionuclides with cellulosic materials in the E-Area slit trenches at the Savannah River Site (SRS) is, therefore, expected to influence nuclide fate and transport in the subsurface. Due to the complexities of these systems and the scarcity of site-specific data, the effects of cellulose waste loading and its subsequent influence on nuclide transport are not well established.

Serkiz, S.M.

1999-10-04T23:59:59.000Z

304

Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw  

NLE Websites -- All DOE Office Websites (Extended Search)

Cultivar Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw J. Lindedam a, *, S.B. Andersen b , J. DeMartini c , S. Bruun b , H. Jørgensen a , C. Felby a , J. Magid b , B. Yang d , C.E. Wyman c a Forestry and Wood Products, Forest & Landscape, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark b Plant and Soil Science Laboratory, Department of Agriculture and Ecology, Faculty of Life Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark c Center for Environmental Research and Technology, Bourns College of Engineering, University of California Riverside, 1084 Columbia Avenue, Riverside, CA 92507, USA d Center for Bioproducts and Bioenergy, Washington State University, 2710 University Drive, Richland, WA 99354, USA a r t i c l e i n f o Article history:

305

Evaluations of cellulose accessibilities of lignocelluloses by solute exclusion and protein adsorption techniques  

NLE Websites -- All DOE Office Websites (Extended Search)

Evaluations Evaluations of Cellulose Accessibilities of Lignocelluloses by Solute Exclusion and Protein Adsorption Techniques Q.Q. Wang, 1,2 Z. He, 3 Z. Zhu, 4,5 Y.-H.P. Zhang, 4,5 Y. Ni, 3 X.L. Luo, 1 J.Y. Zhu 2 1 State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China 2 USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin; telephone: 608-231-9520; fax: 608-231-9538; e-mail: jzhu@fs.fed.us 3 Limerick Pulp and paper Center, University of New Brunswick, Fredericton, New Brunswick, Canada 4 Department Biological Systems Engineering, Virginia Polytechnic Institute, Blacksburg, Virginia 5 U.S. DOE Bioenergy Science Center, Oak Ridge, Tennessee Received 31 May 2011; revision received 27 July 2011; accepted 30 August 2011 Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/bit.23330 ABSTRACT:

306

Methods for Structural Characterization of the Products of Cellulose- and Xyloglucan-Hydrolyzing Enzymes  

NLE Websites -- All DOE Office Websites (Extended Search)

Methods for Structural Characterization of the Products of Cellulose- and Xyloglucan-Hydrolyzing Enzymes Maria J. Pen ~a,* Sami T. Tuomivaara,* ,† Breeanna R. Urbanowicz,* Malcolm A. O'Neill,* and William S. York* ,† Contents 1. Introduction 122 2. Preparation of Substrates 124 3. Purification of the Oligosaccharide Products 124 3.1. Isolation of soluble products generated by enzymatic hydrolysis of insoluble substrates 124 3.2. Isolation of soluble products generated by enzymatic hydrolysis of soluble polymeric substrates 125 3.3. Purification of oligosaccharides by liquid chromatography 125 4. Chemical and Structural Analysis of the Reaction Products 127 4.1. Glycosyl residue composition analysis by gas chromatography with mass spectrometric and flame ionization detection 127 4.2. Converting oligosaccharides to their corresponding oligoglycosyl alditols

307

Cellulose-Nanofiber-Reinforced Poly(lactic acid) Composites Prepared by a Water-Based Approach  

Science Journals Connector (OSTI)

The biological nanocomposite structure of the plant cell wall gives the cells rigidity and strength as well as flexibility, which has inspired our exploration of using the main structural component of the wall, cellulose, to build biobased materials that are both useful and renewable. ... (0.13 mm) nozzle at about 42000 psi (290 MPa) for 20 passes, using a Mini DeBEE ultrahigh-pressure homogenizer (BEE International, South Easton, MA). ... Transmission electron microscopy (TEM) specimens were prepared by ultrasonication of a diluted suspension for about 30 s with a VirTis VirSonic-100 cell disrupter (SP Industries Inc., Warminster, PA) and drying of a tiny drop on a Formvar-coated carbon grid. ...

Tao Wang; Lawrence T. Drzal

2012-09-19T23:59:59.000Z

308

Catalytic oxidative conversion of cellulosic biomass to formic acid and acetic acid with exceptionally high yields  

Science Journals Connector (OSTI)

Abstract Direct conversion of raw biomass materials to fine chemicals is of great significance from both economic and ecological perspectives. In this paper, we report that a Keggin-type vanadium-substituted phosphomolybdic acid catalyst, namely H4PVMo11O40, is capable of converting various biomass-derived substrates to formic acid and acetic acid with high selectivity in a water medium and oxygen atmosphere. Under optimized reaction conditions, \\{H4PVMo11O40\\} gave an exceptionally high yield of formic acid (67.8%) from cellulose, far exceeding the values achieved in previous catalytic systems. Our study demonstrates that heteropoly acids are generally effective catalysts for biomass conversion due to their strong acidities, whereas the composition of metal addenda atoms in the catalysts has crucial influence on the reaction pathway and the product selectivity.

Jizhe Zhang; Miao Sun; Xin Liu; Yu Han

2014-01-01T23:59:59.000Z

309

Iodine Treatment of LigninCellulose Acetate Electrospun Fibers: Enhancement of Green Fiber Carbonization  

Science Journals Connector (OSTI)

Iodine Treatment of LigninCellulose Acetate Electrospun Fibers: Enhancement of Green Fiber Carbonization ... The chemical composition of the samples were analyzed using an Oxford Instruments X-Max20 energy dispersive X-ray spectrometer (EDS), Thermo Scientific Nicolet 6700 Fourier transform infrared (FTIR) spectrometer with a GladiATR single reflection ATR accessory (operated between 400 and 4000 cm1 with a 4 cm1 resolution averaged over 40 scans), and Renishaw Raman spectrometer operated using a 785 nm near-infrared laser (11001900 cm1 with a 0.8 cm1 resolution averaged over 3 scans). ... This work presents a systematic study of the ratio between the integrated intensities of the disorder-induced D and G Raman bands (ID/IG) in nanographite samples with different crystallite sizes (La) and using different excitation laser energies. ...

Makoto Schreiber; Singaravelu Vivekanandhan; Amar Kumar Mohanty; Manjusri Misra

2014-11-06T23:59:59.000Z

310

Polyethylene-supported polyvinylidene fluoridecellulose acetate butyrate blended polymer electrolyte for lithium ion battery  

Science Journals Connector (OSTI)

The polyethylene (PE)-supported polymer membranes based on the blended polyvinylidene fluoride (PVDF) and cellulose acetate butyrate (CAB) are prepared for gel polymer electrolyte (GPE) of lithium ion battery. The performances of the prepared membranes and the resulting \\{GPEs\\} are investigated by scanning electron microscopy, electrochemical impedance spectroscopy, linear potential sweep, and chargedischarge test. The effect of the ratio of PVDF to CAB on the performance of the prepared membranes is considered. It is found that the GPE based on the blended polymer with PVDF:CAB=2:1 (in weight) has the largest ionic conductivity (2.48נ10?3Scm?1) and shows good compatibility with anode and cathode of lithium ion battery. The LiCoO2/graphite battery using this GPE exhibits superior cyclic stability at room temperature, storage performance at elevated temperature, and rate performance.

Jiansheng Liu; Weishan Li; Xiaoxi Zuo; Shengqi Liu; Zhao Li

2013-01-01T23:59:59.000Z

311

Improved oxidation resistance of organic/inorganic composite atomic layer deposition coated cellulose nanocrystal aerogels  

Science Journals Connector (OSTI)

Cellulose nanocrystal (CNC) aerogels are coated with thin conformal layers of Al2O3 using atomic layer deposition to form hybrid organic/inorganic nanocomposites. Electron probe microanalysis and scanning electron microscopy analysis indicated the Al2O3 penetrated more than 1500??m into the aerogel for extended precursor pulse and exposure/purge times. The measured profile of coated fiber radius versus depth from the aerogel surface agrees well with simulations of precursor penetration depth in modeled aerogel structures. Thermogravimetric analysis shows that Al2O3 coated CNC aerogel nanocomposites do not show significant thermal degradation below 295?C as compared with 175?C for uncoated CNC aerogels an improvement of over 100?C.

2014-01-01T23:59:59.000Z

312

Comparison of laboratory delignification methods, their selectivity, and impacts on physiochemical characteristics of cellulosic biomass  

NLE Websites -- All DOE Office Websites (Extended Search)

laboratory laboratory delignification methods, their selectivity, and impacts on physiochemical characteristics of cellulosic biomass Rajeev Kumar a,b,d,⇑ , Fan Hu c,d , Christopher A. Hubbell c,d , Arthur J. Ragauskas c,d , Charles E. Wyman a,b,d a Center for Environmental Research and Technology, Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, CA 92507, United States b Department of Chemical and Environmental Engineering, Bourns College of Engineering, University of California, Riverside, 446 Winston Chung Hall, 900 University Avenue, Riverside, CA 92521, United States c School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States d BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN 37831-6422, United States h i g h l i g h t s " Delignification was

313

Microscopic Analysis of Corn Fiber Using Corn Starch- and Cellulose-Specific Molecular Probes  

SciTech Connect

Ethanol is the primary liquid transportation fuel produced from renewable feedstocks in the United States today. The majority of corn grain, the primary feedstock for ethanol production, has been historically processed in wet mills yielding products such as gluten feed, gluten meal, starch, and germ. Starch extracted from the grain is used to produce ethanol in saccharification and fermentation steps; however the extraction of starch is not 100% efficient. To better understand starch extraction during the wet milling process, we have developed fluorescent probes that can be used to visually localize starch and cellulose in samples using confocal microscopy. These probes are based on the binding specificities of two types of carbohydrate binding modules (CBMs), which are small substrate-specific protein domains derived from carbohydrate degrading enzymes. CBMs were fused, using molecular cloning techniques, to a green fluorescent protein (GFP) or to the red fluorescent protein DsRed (RFP). Using these engineered probes, we found that the binding of the starch-specific probe correlates with starch content in corn fiber samples. We also demonstrate that there is starch internally localized in the endosperm that may contribute to the high starch content in corn fiber. We also surprisingly found that the cellulose-specific probe did not bind to most corn fiber samples, but only to corn fiber that had been hydrolyzed using a thermochemical process that removes the residual starch and much of the hemicellulose. Our findings should be of interest to those working to increase the efficiency of the corn grain to ethanol process.

Porter, S. E.; Donohoe, B. S.; Beery, K. E.; Xu, Q.; Ding, S.-Y.; Vinzant, T. B.; Abbas, C. A.; Himmel, M. E.

2007-09-01T23:59:59.000Z

314

Neutron Reflectometry and QCM-D Study of the Interaction of Cellulase Enzymes with Films of Amorphous Cellulose  

SciTech Connect

Improving the efficiency of enzymatic hydrolysis of cellulose is one of the key technological hurdles to reduce the cost of producing ethanol and other transportation fuels from lignocellulosic material. A better understanding of how soluble enzymes interact with insoluble cellulose will aid in the design of more efficient enzyme systems. We report a study involving neutron reflectometry (NR) and quartz crystal microbalance with dissipation (QCM-D) of the interaction of a commercial fungal enzyme extract (T. viride), two purified endoglucanses from thermophilic bacteria (Cel9A from A. acidocaldarius and Cel5A from T. maritima), and a mesophilic fungal endoglucanase (Cel45A from H. insolens) with amorphous cellulose films. The use of amorphous cellulose is motivated by the promise of ionic liquid pretreatment as a second generation technology that disrupts the native crystalline structure of cellulose. NR reveals the profile of water through the film at nm resolution, while QCM-D provides changes in mass and film stiffness. At 20 oC and 0.3 mg/ml, the T. viride cocktail rapidly digested the entire film, beginning from the surface followed by activity throughout the bulk of the film. For similar conditions, Cel9A and Cel5A were active for only a short period of time and only at the surface of the film, with Cel9A releasing 40 from the ~ 700 film and Cel5A resulting in only a slight roughening/swelling effect at the surface. Subsequent elevation of the temperature to the Topt in each case resulted in a very limited increase in activity, corresponding to the loss of an additional 60 from the film for Cel9A and 20 from the film for Cel5A, and very weak penetration into and digestion within the bulk of the film, before the activity again ceased. The results for Cel9A and Cel5A contrast sharply with results for Cel45A where very rapid and extensive penetration and digestion within the bulk of the film was observed at 20 C. We speculate that the large differences are due to the use of the thermophilic enzymes far below their optimal temperatures and also the presence of a cellulose binding module (CBM) on Cel45A while the thermophilic enzymes lack a CBM.

Halbert, Candice E [ORNL; Ankner, John Francis [ORNL; Kent, Michael S [Sandia National Laboratories (SNL); Jaclyn, Murton K [Sandia National Laboratories (SNL); Browning, Jim [ORNL; Cheng, Gang [Joint Bioenergy Institute; Liu, Zelin [Virginia Polytechnic Institute and State University (Virginia Tech); Majewski, Jaroslaw [Los Alamos National Laboratory (LANL); Supratim, Datta [Joint Bioenergy Institute; Michael, Jablin [Los Alamos National Laboratory (LANL); Bulent, Akgun [NIST Center for Neutron Research (NCRN), Gaithersburg, MD; Alan, Esker [Virginia Polytechnic Institute and State University (Virginia Tech); Simmons, Blake [Sandia National Laboratories (SNL)

2011-01-01T23:59:59.000Z

315

Hydrolysis of cellulose to produce glucose with solid acid catalysts in 1-butyl-3-methyl-imidazolium chloride ([bmIm][Cl]) with sequential water addition  

Science Journals Connector (OSTI)

Selective glucose production by cellulose hydrolysis with initial or sequential water addition in the presence of solid acid catalysts in 1-butyl-3-methyl-imidazolium chloride ([bmIm][Cl]) under microwave irra...

Kaori Ishida; Shiho Matsuda; Masaru Watanabe

2014-12-01T23:59:59.000Z

316

Biocontrol of Listeria monocytogenes and Escherichia coli O157:H7 in Meat by Using Phages Immobilized on Modified Cellulose Membranes  

Science Journals Connector (OSTI)

...excellent physical properties and low price. Moreover, cellulose can be easily manufactured...search for new applications for these natural bacterial killers using different strategies...Kaufman. 1997. Biodesulfurization of flue gases and other sulfate/sulfite waste streams...

H. Anany; W. Chen; R. Pelton; M. W. Griffiths

2011-07-29T23:59:59.000Z

317

Engineering of a high-throughput screening system to identify cellulosic biomass, pretreatments, and enzyme formulations that enhance sugar release  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering Engineering of a High-Throughput Screening System to Identify Cellulosic Biomass, Pretreatments, and Enzyme Formulations That Enhance Sugar Release Michael H. Studer, Jaclyn D. DeMartini, Simone Brethauer, Heather L. McKenzie, Charles E. Wyman Chemical and Environmental Engineering Department, Center for Environmental Research and Technology, Bourns College of Engineering, University of California Riverside, 1084 Columbia Avenue, Riverside, California 92507; telephone: þ951-781-5791; fax: þ951-781-5790; e-mail: charles.wyman@ucr.edu Received 7 April 2009; revision received 21 August 2009; accepted 31 August 2009 Published online 3 September 2009 in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/bit.22527 ABSTRACT: The recalcitrance of cellulosic biomass, the only abundant, sustainable feedstock for making liquid fuels, is a primary

318

Combined enzyme mediated fermentation of cellulose and xylose to ethanol by Schizosaccharomyces pombe, cellulase, [beta]-glucosidase, and xylose isomerase  

DOE Patents (OSTI)

A process for producing ethanol from mixed sugar streams from pretreated biomass comprising xylose and cellulose using enzymes to convert these substrates to fermentable sugars; selecting and isolating a yeast Schizosaccharomyces pombe ATCC No. 2476, having the ability to ferment these sugars as they are being formed to produce ethanol; loading the substrates with the fermentation mix composed of yeast, enzymes and substrates; fermenting the loaded substrates and enzymes under anaerobic conditions at a pH range of between about 5.0 to about 6.0 and at a temperature range of between about 35 C to about 40 C until the fermentation is completed, the xylose being isomerized to xylulose, the cellulose being converted to glucose, and these sugars being concurrently converted to ethanol by yeast through means of the anaerobic fermentation; and recovering the ethanol. 2 figures.

Lastick, S.M.; Mohagheghi, A.; Tucker, M.P.; Grohmann, K.

1994-12-13T23:59:59.000Z

319

Fabrication of hydrophobic, electrically conductive and flame-resistant carbon aerogels by pyrolysis of regenerated cellulose aerogels  

Science Journals Connector (OSTI)

Abstract In this paper, we reported miscellaneous carbon aerogels prepared by pyrolysis of regenerated cellulose aerogels that were fabricated by dissolution in a mild NaOH/PEG solution, freeze?thaw treatment, regeneration, and freeze drying. The as-prepared carbon aerogels were subsequently characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), nitrogen adsorption measurements, X-ray diffraction (XRD), Raman spectroscopy, and water contact angle (WCA) tests. The results showed that the carbon aerogels with pore diameters of 1?60nm maintained interconnected three-dimensional (3D) network after the pyrolysis, and showed type?IV adsorption isotherm. The pyrolysis process leaded to the decomposition of oxygen-containing functional groups, the destruction of cellulose crystalline structure, and the formation of highly disordered amorphous graphite. Moreover, the carbon aerogels also had strong hydrophobicity, electrical conductivity and flame retardance, which held great potential in the fields of waterproof, electronic devices and fireproofing.

Caichao Wan; Yun Lu; Yue Jiao; Chunde Jin; Qingfeng Sun; Jian Li

2014-01-01T23:59:59.000Z

320

Tubular structured hierarchical mesoporous titania material derived from natural cellulosic substances and application as photocatalyst for degradation of methylene blue  

SciTech Connect

Graphical abstract: Bio-inspired, tubular structured hierarchical mesoporous titania material with high photocatalytic activity under UV light was fabricated employing natural cellulosic substance (cotton) as hard template and cetyltrimethylammonium bromide (CTAB) surfactant as soft template using a one-pot sol-gel method. Highlights: {yields} Tubular structured mesoporous titania material was fabricated by sol-gel method. {yields} The titania material faithfully recorded the hierarchical structure of the template substrate (cotton). {yields} The titania material exhibited high photocatalytic activity in decomposition of methylene blue. -- Abstract: Bio-inspired, tubular structured hierarchical mesoporous titania material was designed and fabricated employing natural cellulosic substance (cotton) as hard template and cetyltrimethylammonium bromide (CTAB) surfactant as soft template by one-pot sol-gel method. The tubular structured hierarchical mesoporous titania material processes large specific surface area (40.23 m{sup 2}/g) and shows high photocatalytic activity in the photodegradation of methylene blue under UV light irradiation.

Huang, Haiqing [Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000 (China)] [Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000 (China); Liu, Xiaoyan [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China)] [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China); Huang, Jianguo, E-mail: jghuang@zju.edu.cn [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China)] [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China)

2011-11-15T23:59:59.000Z

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


321

Final Environmental Assessment for Construction and Operation of a Proposed Ethanol Cellulosic Ethanol Plant, Range Fuels, Inc.  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

i i n a l E n v i r o n m e n t a l A s s e s s m e n t Construction and Operation of a Proposed Cellulosic Ethanol Plant, Range Fuels, Inc. Treutlen County, Georgia DOE/EA 1597 Prepared for U.S. Department of Energy October 2007 Contents Section Page Contents........................................................................................................................................iii Acronyms and Abbreviations .................................................................................................vii 1.0 Introduction......................................................................................................................1 1.1 Background ..........................................................................................................1

322

A study of cellulose gasification in a fluidized bed using a high-temperature solar furnace  

SciTech Connect

A 4.2-meter solar furnace was used to study the gasification of cellulose with steam in a fluidized bed. The heating value of the high-temperature equilibrium products is about twenty percent higher than that of the reactants. The increase represents stored solar energy; and the product, synthesis gas, is valuable as a chemical feedstock or pipeline gas. All experiments were performed at atmospheric pressure. Pure tabular alumina as well as crushed automotive exhaust was used as a bed material. Microcrystalline {alpha}-cellulose, entrained in argon, entered the fluidized bed just above the distributor. Steam heated to the operating temperature in a 10 cm packed bed section below the fluidized bed. In all cases, the process ran with more steam than required to produce an equimolar mixture of carbon monoxide and hydrogen. We used a quartz reactor between 1100 and 1430 K; a steel reactor at 1500 K and an Inconel reactor at 1600 K. Reactor inside diameter, nominally 5 cm, varied slightly; the bed height was adjusted to keep the gas residence time constant. Hydrogen production rate was measured before and after experiments with steam alone, with this amount subtracted. Equilibrium mixtures were not achieved. Catalysts improved hydrogen yields with higher than expected concentrations of carbon monoxide, methane and lighter hydrocarbons such as ethylene and acetylene. Experiments performed without catalyst at 1300 K, achieved a mixture (dry, argon-free) of 46 mole% CO, 30% H{sub 2} 14% CH{sub 4} 5% CO{sub 2} and 5% C{sub 2}H{sub 4}. An equilibrium mixture at this temperature would have contained 39% CO, 30% H{sub 2} 7% CO{sub 2} and no CH{sub 4} or C{sub 2}H{sub 4}. With the catalyst, the CO and CH{sub 4} decreased to 40% and 2% respectively, the H{sub 2} increased to 47%, and CO{sub 2} remained the same. No ethylene was formed. The hydrocarbon-rich mixtures achieved are typical of rapid-pyrolysis processes.

Murray, J.P.

1989-01-01T23:59:59.000Z

323

Reducing Enzyme Costs Increases the Market Potential of Biofuels (Fact Sheet)  

SciTech Connect

Cellulosic ethanol prices depend heavily on the cost of the cellulase enzymes used to break down the biomass into fermentable sugars. To reduce these costs, NREL partnered with two leading enzyme companies, Novozymes and Genencor, to engineer new cellulase enzymes that are exceptionally good at breaking down cellulose. Genencor is now part of DuPont Industrial Biosciences.

Not Available

2013-08-01T23:59:59.000Z

324

Hydrogel, aerogel and film of cellulose nanofibrils functionalized with silver nanoparticles  

Science Journals Connector (OSTI)

Abstract In this work, we describe hydrogels, aerogels and films of nanofibrillated cellulose (NFC) functionalized with metal nanoparticles using silver as an example. The TEMPO process used to produce NFC generates negatively charged surface carboxylate groups that provide high binding capability to transition metal species such as Ag+. The gelation of NFC triggered by transition monovalent metal ions was revealed for the first time. The interaction was utilized to bind Ag+ on the NFC surface and simultaneously induce formation of NFC-Ag+ hydrogels, where Ag+ was slowly reduced to Ag nanoparticles by hydroxyl groups on NFC without additional reducing agent. The NFC-Ag+ hydrogel was initiated by strong association of carboxylate groups on NFC with Ag+ and sufficient NFC surface charge reduction. The stiff hydrogel has a storage modulus leveled off at a plateau value of ~6800Pa. Porous aerogels and flat thin films comprising a continuous matrix of NFC were decorated with Ag nanoparticles through freeze-drying or solution-casting of NFC-Ag+ dispersions with low contents of Ag+, respectively, followed by UV reduction. The presence of Ag species on NFC reduced coalescence of nanofibrils in the film formation as revealed from AFM phase images.

Hong Dong; James F. Snyder; Dat T. Tran; Julia L. Leadore

2013-01-01T23:59:59.000Z

325

Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol  

SciTech Connect

A techno-economic analysis on the production of cellulosic ethanol by fermentation was conducted to understand the viability of liquid biofuel production processes within the next 5-8 years. Initially, 35 technologies were reviewed, then a two-step down selection was performed to choose scenarios to be evaluated in a more detailed economic analysis. The lignocellulosic ethanol process was selected because it is well studied and portions of the process have been tested at pilot scales. Seven process variations were selected and examined in detail. Process designs were constrained to public data published in 2007 or earlier, without projecting for future process improvements. Economic analysis was performed for an 'nth plant' (mature technology) to obtain total investment and product value (PV). Sensitivity analysis was performed on PV to assess the impact of variations in process and economic parameters. Results show that the modeled dilute acid pretreatment process without any downstream process variation had the lowest PV of $3.40/gal of ethanol ($5.15/gallon of gasoline equivalent) in 2007 dollars. Sensitivity analysis shows that PV is most sensitive to feedstock and enzyme costs.

Kazi, F. K.; Fortman, J.; Anex, R.; Kothandaraman, G.; Hsu, D.; Aden, A.; Dutta, A.

2010-06-01T23:59:59.000Z

326

Effect of silica on the properties of cellulose acetate/polyethylene glycol membranes for reverse osmosis  

Science Journals Connector (OSTI)

Abstract In this work, a series of cellulose acetate/polyethylene glycol-600 membranes, with varying ratios were prepared by 2-stage phase inversion protocol. The permeation properties were studied by subjecting membranes in indigenously fabricated reverse osmosis plant. After optimization of different CA/PEG ratios, the membrane with highest salt rejection capacity was selected and modified with varying amount of silica. The Modified membranes were characterized for their permeation properties, hydrophilicity, compositional analysis, thermal stability, mechanical strength and morphological studies. Silica significantly influenced the permeation performance of composite membrane. The flux enhanced from 0.35 to 2.46L/hm2 along with an 11.41% relative increase in salt rejection. The hydrophilicity was significantly enhanced by the addition of silica. In FTIR spectra, the broadening of the peak around 3500cm?1 and emergence of peak at 950cm?1 specified the incorporation of silica particles. The thermal analysis indicated the relative increase in degradation temperature (Tmax) and glass transition temperature (Tg) for CPS-5 membrane. The mechanical stability of the modified membranes, increased initially, but declined with further addition of silica. The results indicated that the incorporation of SiO2 content in the casting solution improved the fouling resistance of the membranes.

Adnan Ahmad; Sidra Waheed; Shahzad Maqsood Khan; Sabad e-Gul; Muhammad Shafiq; Muhammad Farooq; Khairuddin Sanaullah; Tahir Jamil

2015-01-01T23:59:59.000Z

327

Preparation of hybrid nano biocomposite ?-carrageenan/cellulose nanocrystal/nanoclay  

Science Journals Connector (OSTI)

Biodegradable composites film based on ?-carrageenan and nano particles as filler was prepared to study the mechanical strength of carrageenan composites. Solution casting technique was used to prepare_this biocomposite. Preparation of composite film and nano filler involve two stages preparation of cellulose nanocrystals (CNC) from kenaf with alkali treatment bleaching and hydrolysis followed by the preparation of two types of nano composite. Tensile test was carried on the composite film based on ?-carrageenan with the variation percentage of CNC and nano clay to obtain the optimum CNC and nano clay loading. After that hybrid nano-biocomposite film based on ?-carrageenan with the variation percentage of CNC/nano clay (OMMT) according to optimum value of composite carrageenan/CNC and composite carrageenan/nano clay film was prepared. The effect of nano filler on the mechanical properties of carrageenan films was examined. ?-carrageenan biocomposite increased with the optimum at 4% CNC and nano clay composition. Additional improvement of tensile strength with hybridization of CNC and nanoclay indicated better mechanical properties.

Siti Zarina Zakuwan; Ishak Ahmad; Nazaruddin Ramli

2013-01-01T23:59:59.000Z

328

Liquid fuel resources and prospects for ligno-cellulosic ethanol: An Egyptian case study  

Science Journals Connector (OSTI)

Abstract Fossil fuels (oil, natural gas and coal) presently represent about 90% of the worlds total commercial primary energy demand. Yet, they are depletable sources of energy. Growth in the production of easily accessible oil, the main source of high energy liquid transportation fuels, will not match the projected rate of demand growth, especially in developing countries. In the transport sector, today, the only alternative to non-sustainable fossil fuels is biofuels that are produced from biomass, a stored environmentally neutral solar energy. These fuels are compatible with current vehicles and blendable with conventional fuels. Moreover, they share the long-established distribution infrastructure with little, if any, modification of equipment. The main biofuels presently in commercial production are bioethanol and biodiesel. Industrial countries started production of the 1st generation bioethanol and biodiesel from food products (grains and edible oil) since a few decades and these fuels are currently available at petrol stations. Second generation bioethanol from ligno-cellulosic materials is on the research, pilot and/or demonstration stage. This paper discusses the current situation regarding liquid fuels in Egypt which are experiencing imbalance between total production and demand for gasoline and diesel fuels. The quantified need for nonconventional sources is presented. Based on a thorough assessment of current and prospective generated agriculture residues as distributed over the political areas, mapping of the number and capacity of plants to be installed for production of bioethanol from available residues namely rice straw, sugar cane residues and cotton stalks has been developed. Annual capacities of 3000, 10,000 and 20,000tons ethanol/year until year 2021 have been proposed. Capital and operating requirements and economic indicators have been estimated. It has been concluded that at current price of ethanol of about $0.6/kg, the simple rate of return on investments is about 2.8%, 11% and 16% for the 3000, 10,000 and 20,000tons annual capacity ethanol respectively.

Shadia R. Tewfik; Nihal M. El Defrawy; Mohamed H. Sorour

2013-01-01T23:59:59.000Z

329

Role of Lignin in Reducing Life-Cycle Carbon Emissions, Water Use, and Cost for United States Cellulosic Biofuels  

Science Journals Connector (OSTI)

The grid electricity offset credits alone can reduce the life-cycle greenhouse gas (GHG) footprint of cellulosic ethanol by up to 20 g CO2e/MJ ethanol, in some cases resulting in a net negative GHG footprint. ... Case 2 represents a system in which the solids boiler and steam turbine from case 1 remain operational, but imported natural gas is used to operate an additional 65 MW gas turbine, resulting in a net power output of 50 MW. ... In each case, the capital costs for gas turbines are calculated on the basis of the gross power output rating. ...

Corinne D. Scown; Amit A. Gokhale; Paul A. Willems; Arpad Horvath; Thomas E. McKone

2014-07-02T23:59:59.000Z

330

The effect of clay catalyst on the chemical composition of bio-oil obtained by co-pyrolysis of cellulose and polyethylene  

SciTech Connect

Highlights: Non-catalytic and catalytic fast pyrolysis of cellulose/polyethylene blend was carried out in a laboratory scale reactor. Optimization of process temperature was done. Optimization of clay catalyst type and amount for co-pyrolysis of cellulose and polyethylene was done. The product yields and the chemical composition of bio-oil was investigated. - Abstract: Cellulose/polyethylene (CPE) mixture 3:1, w/w with and without three clay catalysts (K10 montmorillonite K10, KSF montmorillonite KSF, B Bentonite) addition were subjected to pyrolysis at temperatures 400, 450 and 500 C with heating rate of 100 C/s to produce bio-oil with high yield. The pyrolytic oil yield was in the range of 41.379.5 wt% depending on the temperature, the type and the amount of catalyst. The non-catalytic fast pyrolysis at 500 C gives the highest yield of bio-oil (79.5 wt%). The higher temperature of catalytic pyrolysis of cellulose/polyethylene mixture the higher yield of bio-oil is. Contrarily, increasing amount of montmorillonite results in significant, almost linear decrease in bio-oil yield followed by a significant increase of gas yield. The addition of clay catalysts to CPE mixture has a various influence on the distribution of bio-oil components. The addition of montmorillonite K10 to cellulose/polyethylene mixture promotes the deepest conversion of polyethylene and cellulose. Additionally, more saturated than unsaturated hydrocarbons are present in resultant bio-oils. The proportion of liquid hydrocarbons is the highest when a montmorillonite K10 is acting as a catalyst.

Solak, Agnieszka; Rutkowski, Piotr, E-mail: piotr.rutkowski@pwr.wroc.pl

2014-02-15T23:59:59.000Z

331

The bulking effect of dietary fiber in the rat large intestine: an in vivo study of cellulose, guar, pectin, wheat bran and oat bran  

E-Print Network (OSTI)

THE BULKING EFFECT OF DIETARY FIBER IN THE RAT LARGE INTESTINE: AN IN VIVO STUDY OF CELLULOSE, GUAR, PECTIN, WHEAT BRAN AND OAT BRAN A Thesis by JEANNE MARIE GAZZANIGA Submitted to the Graduate College of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1985 Major Subject: Nutrition THE BULKING EFFECT OF DIETARY FIBER IN THE RAT LARGE INTESTINE: AN IN VIVO STUDY OF CELLULOSE, GUAR, PECTIN, WHEAT BRAN AND OAT BRAN A Thesis...

Gazzaniga, Jeanne Marie

1985-01-01T23:59:59.000Z

332

Supplementation with xylanase and beta-xylosidase to reduce xylo-oligomer and xylan inhibition of enzymatic hydrolysis of cellulose and pretreated corn stover  

E-Print Network (OSTI)

surface available for enzyme adsorption compared with the looser amorphous structure of xylan.xylan removal to enhancement of substrate accessibility to enzymes through exposing more crystal- line cellulose surface.surface. In addition, our recent research has suggested that hemicelluloses, particularly in the form of xylan and

Qing, Qing; Wyman, Charles E

2011-01-01T23:59:59.000Z

333

Processing of cellulosic material by a cellulase-containing cell-free fermentate produced from cellulase-producing bacteria, ATCC 55702  

DOE Patents (OSTI)

Bacteria which produce large amounts of a cellulase-containing cell-free fermentate, have been identified. The original bacterium (ATCC 55703) was genetically altered using nitrosoguanidine (MNNG) treatment to produce the enhanced cellulase degrading bacterium ATCC 55702, which was identified through replicate plating. ATCC 55702 has improved characteristics and qualities for the degradation of cellulosic materials. 5 figs.

Dees, H.C.

1998-08-04T23:59:59.000Z

334

Deciphering Climate from the Characterization of Ring Width, Carbon, and Oxygen Isotopes in Latewood Tree-Ring Cellulose, Big Thicket National Preserve, Texas, USA  

E-Print Network (OSTI)

for their help with the project. Dr. Mora gave me the opportunity to pursue a Ph.D. in tree-ring chemistry. Dr in Latewood Tree-Ring Cellulose, Big Thicket National Preserve, Texas, USA A Dissertation Presented. Grissino-Mayer mentored me as a new dendrochronologist, and is ultimately the reason I chose tree rings

Grissino-Mayer, Henri D.

335

J. Appl. Cryst. (1999). 32, 11271133 Imaging of the helical arrangement of cellulose brils in wood by synchrotron X-ray  

E-Print Network (OSTI)

in wood by synchrotron X-ray microdiffraction H. Lichtenegger,a * M. Mu? ller,b O. Paris,a Ch. Riekelb of cellulose ®brils in the S2 layer of adjacent wood cells of Picea abies (Norwegian spruce) was obtained scans over intact transverse sections of adjacent wood cells with a microscopic position resolution

Lichtenegger, Helga C.

336

Bamboo saccharification through cellulose solvent-based biomass pretreatment followed by enzymatic hydrolysis at ultra-low cellulase loadings  

NLE Websites -- All DOE Office Websites (Extended Search)

Bamboo Bamboo saccharification through cellulose solvent-based biomass pretreatment followed by enzymatic hydrolysis at ultra-low cellulase loadings Noppadon Sathitsuksanoh a,b , Zhiguang Zhu a , Tsung-Jen Ho c,d , Ming-Der Bai e , Yi-Heng Percival Zhang a,b,f, * a Biological Systems Engineering Department, Virginia Polytechnic Institute and State University (Virginia Tech), 210-A Seitz Hall, Blacksburg, VA 24061, USA b Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA c Pilot Process and Applications Department of Chemical Engineering Division, Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 30011, Taiwan d Department of Chemical and Materials Engineering, National Central University, Chungli 32001, Taiwan e BioFuel Department

337

The effect of thiocyanate on mixtures of the lyotropic mesogen hydroxypropyl cellulose with water and with coiled polymers  

SciTech Connect

Concomitant with its salting in effect, the thiocyanate ion among others was found to increase the solubility of some water soluble polymers including the flexible chain polymers, poly (ethylene glycol) (PEG) and poly (acrylic acid) PAA, as well as the semirigid hydroxypropyl cellulose (HPC). Tools used to study the phase behavior of systems involving substances have included, optical spectroscopy, deuterium NMR, DSC, and mixtures of these of freeze fractured samples. Mechanical Properties of dried systems of these substances and their mixtures have been obtained. The addition of LiSCN leads to increases in the chiral nematic pitches of aqueous solutions of HPC. Mixtures of HPC/PEG/H{sub 2}O and HPC/PAA/H{sub 2}O at concentrations that included the phase zones of isotropy and anisotropy for these systems displayed features of immiscibility that were mitigated by the introduction of LiSCN.

Wang, B.; Theil, M.H. [North Carolina State Univ., Raleigh, NC (United States)

1995-12-01T23:59:59.000Z

338

Initial Recognition of a Cellodextrin Chain in the Cellulose-Binding Tunnel May Affect Cellobiohydrolase Directional Specificity  

NLE Websites -- All DOE Office Websites (Extended Search)

Initial Initial Recognition of a Cellodextrin Chain in the Cellulose-Binding Tunnel May Affect Cellobiohydrolase Directional Specificity Pavan K. GhattyVenkataKrishna, †‡ Emal M. Alekozai, §{ Gregg T. Beckham, k ** Roland Schulz, {‡‡ Michael F. Crowley, ‡†† * Edward C. Uberbacher, †‡ * and Xiaolin Cheng ‡{‡‡ * † Computational Biology and Bioinformatics Group and ‡ BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee; § Interdisciplinary Center for Scientific Computing, University of Heidelberg, Heidelberg Germany; { UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, Oak Ridge, Tennessee; k National Bioenergy Center, National Renewable Energy Laboratory, Golden, Colorado; **Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado; †† Biosciences Center, National

339

DOE/EA-1647: Finding of No Significant for the Proposed Construction and Operation of a Cellulosic Ethanol Plant, Treutlen County, Georgia (01/14/09)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

93 93 January 14, 2009 FINDING OF NO SIGNIFICANT IMPACT for the PROPOSED CONSTRUCTION AND OPERATION OF A CELLULOSIC ETHANOL PLANT, TREUTLEN COUNTY, GEORGIA SUMMARY: In October 2007, the U. S. Department of Energy (DOE) completed an environmental assessment (EA) that analyzed the potential impacts associated with the construction and operation of a proposed cellulosic ethanol plant in Treutlen County, Georgia. Subsequent to the issuance of a Finding of No Significant Impact (FONSI) for the October 2007 EA, changes were proposed for the design and operating parameters of the facility. In compliance with NEPA (42 U.S. Code [USe] §§ 4321 et seq.) and DOE's NEPA implementing regulations (10 Code of Federal Regulations [CFR] Section 1021.330) and procedures, DOE completed a supplemental environmental assessment (SEA) to examine the potential environmental impacts associated with

340

Application in the Ethanol Fermentation of Immobilized Yeast Cells in Matrix of Alginate/Magnetic Nanoparticles, on Chitosan-Magnetite Microparticles and Cellulose-coated Magnetic Nanoparticles  

E-Print Network (OSTI)

Saccharomyces cerevisiae cells were entrapped in matrix of alginate and magnetic nanoparticles and covalently immobilized on magnetite-containing chitosan and cellulose-coated magnetic nanoparticles. Cellulose-coated magnetic nanoparticles with covalently immobilized thermostable {\\alpha}-amylase and chitosan particles with immobilized glucoamylase were also prepared. The immobilized cells and enzymes were applied in column reactors - 1/for simultaneous corn starch saccharification with the immobilized glucoamylase and production of ethanol with the entrapped or covalently immobilized yeast cells, 2/ for separate ethanol fermentation of the starch hydrolysates with the fixed yeasts. Hydrolysis of corn starch with the immobilized {\\alpha}-amylase and glucoamylase, and separate hydrolysis with the immobilized {\\alpha}-amylase were also examined. In the first reactor the ethanol yield reached approx. 91% of the theoretical; the yield was approx. 86% in the second. The ethanol fermentation was affected by the typ...

Ivanova, Viara; Hristov, Jordan

2011-01-01T23:59:59.000Z

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341

The AlphaBet(a) of Glucose Pyrolysis: Computational and Experimental Investigations of 5-Hydroxymethylfurfural and Levoglucosan Formation Reveal Implications for Cellulose Pyrolysis  

Science Journals Connector (OSTI)

The AlphaBet(a) of Glucose Pyrolysis: Computational and Experimental Investigations of 5-Hydroxymethylfurfural and Levoglucosan Formation Reveal Implications for Cellulose Pyrolysis ... For example, there are several proposed mechanisms for evolution of an important product and platform chemical, 5-hydroxymethylfurfural (5-HMF), but evaluation with different methodologies has hindered comparison. ... (12, 17) The remaining 41% is composed of water (from dehydration) and products that individually account for less than 7 wt % of the yield, including 6.7 wt % glycolaldehyde, 4.1 wt % of the furanose form of levoglucosan (1,6-anhydro-?-d-glucofuranose), and 2.8 wt % 5-hydroxymethylfurfural (5-HMF), as reported in the meticulous study by Patwardhan et al. conducted at 500 C with pure cellulose feed, rapid heating, and minimization of secondary reactions. ...

Heather B. Mayes; Michael W. Nolte; Gregg T. Beckham; Brent H. Shanks; Linda J. Broadbelt

2014-04-23T23:59:59.000Z

342

Impact of Air Pollution Control Costs on the Cost and Spatial Arrangement of Cellulosic Biofuel Production in the U.S.  

Science Journals Connector (OSTI)

Impact of Air Pollution Control Costs on the Cost and Spatial Arrangement of Cellulosic Biofuel Production in the U.S. ... The difference in truck freight transport between the AQ_On and AQ_Off scenario is approximately 120 million ton-miles, costing approximately $33 million, or one-fifth of the cost difference between the two scenarios. ... gal of fuel produced and combusted in the US, the combined climate change and health costs were $469 million for gasoline, $472-952 million for corn ethanol (depending on bio-refinery heat source [natural gas, corn stover, coal] and technol.), but only $123-208 million for cellulosic ethanol (depending on feedstock [prairie biomass, Miscanthus, corn stover, switchgrass]). ...

Colin W. Murphy; Nathan C. Parker

2014-01-27T23:59:59.000Z

343

Comparative Study of Corn Stover Pretreated by Dilute Acid and Cellulose Solvent-Based Lignocellulose Fractionation: Enzymatic Hydrolysis, Supramolecular Structure, and Substrate Accessibility  

SciTech Connect

Liberation of fermentable sugars from recalcitrant biomass is among the most costly steps for emerging cellulosic ethanol production. Here we compared two pretreatment methods (dilute acid, DA, and cellulose solvent and organic solvent lignocellulose fractionation, COSLIF) for corn stover. At a high cellulase loading [15 filter paper units (FPUs) or 12.3 mg cellulase per gram of glucan], glucan digestibilities of the corn stover pretreated by DA and COSLIF were 84% at hour 72 and 97% at hour 24, respectively. At a low cellulase loading (5 FPUs per gram of glucan), digestibility remained as high as 93% at hour 24 for the COSLIF-pretreated corn stover but reached only {approx}60% for the DA-pretreated biomass. Quantitative determinations of total substrate accessibility to cellulase (TSAC), cellulose accessibility to cellulase (CAC), and non-cellulose accessibility to cellulase (NCAC) based on adsorption of a non-hydrolytic recombinant protein TGC were measured for the first time. The COSLIF-pretreated corn stover had a CAC of 11.57 m{sup 2}/g, nearly twice that of the DA-pretreated biomass (5.89 m{sup 2}/g). These results, along with scanning electron microscopy images showing dramatic structural differences between the DA- and COSLIF-pretreated samples, suggest that COSLIF treatment disrupts microfibrillar structures within biomass while DA treatment mainly removes hemicellulose. Under the tested conditions COSLIF treatment breaks down lignocellulose structure more extensively than DA treatment, producing a more enzymatically reactive material with a higher CAC accompanied by faster hydrolysis rates and higher enzymatic digestibility.

Zhu, Z.; Sathitsuksanoh, N.; Vinzant, T.; Schell, D. J.; McMillian, J. D.; Zhang, Y. H. P.

2009-07-01T23:59:59.000Z

344

Assessment of Fuel-Cycle Energy Use and Greenhouse Gas Emissions for Fischer?Tropsch Diesel from Coal and Cellulosic Biomass  

Science Journals Connector (OSTI)

Assessment of Fuel-Cycle Energy Use and Greenhouse Gas Emissions for Fischer?Tropsch Diesel from Coal and Cellulosic Biomass ... There are two general designs for FTD production:(7, 30) recycling (RC) design and once-through (OT) design, as illustrated in Figure 2. ... Wang, M. Q.GREET 1.0 Transportation Fuel Cycles Model: Methodology and Use, Argonne National Laboratory: Argonne, IL, ANL/ESD-33. ...

Xiaomin Xie; Michael Wang; Jeongwoo Han

2011-03-03T23:59:59.000Z

345

Nano-web structures constructed with a cellulose acetate/lithium chloride/polyethylene oxide hybrid: Modeling, fabrication and characterization  

Science Journals Connector (OSTI)

Abstract Electrospun nano-web structures (ENWSs) were successfully fabricated from ionized binary solution of celluloseMn30/polyethylene oxideMn200 (CA/PEO of 0.51.5). Final concentration of polymers was 12% (w/v) in the solution, and lithium chloride was used as ionizing agent. Response surface methodology (RSM) was applied to the optimize fabrication of ENWSs. Results of multiple linear regression analysis revealed that the solution properties and \\{ENWSs\\} morphology were strongly influenced by CA/PEO. An increase in PEO amount increased the viscosity which is a function of molecular weight, and as a result raised the entanglement of polymeric solution but decreased the surface tension that all support nanofibers fabrication. The size of nanofibers decreased with reducing PEO and LiCl concentration. Increasing the content of LiCl promoted the electrical conductivity (EC) value; however, junction zones were formed. The overall optimum region was found to be at combined level of 1.5% CA/PEO and 0.49% (w/v) LiCl.

Atefeh Broumand; Zahra Emam-Djomeh; Faramarz Khodaiyan; Sasan Mirzakhanlouei; Driush Davoodi; Ali A. Moosavi-Movahedi

2015-01-01T23:59:59.000Z

346

X-ray Crystallographic, Scanning Microprobe X-ray Diffraction, and Cross-Polarized/Magic Angle Spinning [superscript 13]C NMR Studies of the Structure of Cellulose III[subscript II  

SciTech Connect

The X-ray crystallographic structure of cellulose III{sub II} is characterized by disorder; the unit cell (space group P2{sub 1}; a = 4.45 {angstrom}, b = 7.64 {angstrom}, c = 10.36 {angstrom}, {alpha} = {beta} = 90{sup o}, {gamma} = 106.96{sup o}) is occupied by one chain that is the average of statistically disordered antiparallel chains. {sup 13}C CP/MAS NMR studies reveal the presence of three distinct molecular conformations that can be interpreted as a mixture of two different crystal forms, one equivalent to cellulose III{sub I}, and another with two independent glucosyl conformations in the asymmetric unit. Both X-ray crystallographic and {sup 13}C NMR spectroscopic results are consistent with an aggregated microdomain structure for cellulose III{sub II}. This structure can be generated from a new crystal form (space group P2{sub 1}; a = 4.45 {angstrom}, b = 14.64 {angstrom}, c = 10.36 {angstrom}, {alpha} = {beta} = 90{sup o}, {gamma} = 90.05{sup o}; two crystallographically independent and antiparallel chains; gt hydroxymethyl groups) by multiple dislocation defects. These defects produce microdomains of the new crystal form and cellulose III{sub I} that scanning microprobe diffraction studies show are distributed consistently through the cellulose III{sub II} fiber.

Wada, Masahisa; Heux, Laurent; Nishiyama, Yoshiharu; Langan, Paul; (U of Tokyo); (CNRS-CRMD); (LANL)

2009-03-16T23:59:59.000Z

347

Hybrid MPI-OpenMP Parallelism in the ONETEP Linear-Scaling Electronic Structure Code: Application to the Delamination of Cellulose Nanofibrils  

Science Journals Connector (OSTI)

Hybrid MPI-OpenMP Parallelism in the ONETEP Linear-Scaling Electronic Structure Code: Application to the Delamination of Cellulose Nanofibrils ... Finally, in all sections of the code dealing directly with grid data on whole-cell grids, such as evaluation of the exchange-correlation energy and potential, there is a further opportunity for thread-parallelism. ... The STFC Hartree Centre is a research collaboratory in association with IBM providing High Performance Computing platforms funded by the UKs investment in e-Infrastructure. ...

Karl A. Wilkinson; Nicholas D. M. Hine; Chris-Kriton Skylaris

2014-10-10T23:59:59.000Z

348

Catalytic conversion of cellulose to liquid hydrocarbon fuels by progressive removal of oxygen to facilitate separation processes and achieve high selectivities  

DOE Patents (OSTI)

Described is a method to make liquid chemicals, such as functional intermediates, solvents, and liquid fuels from biomass-derived cellulose. The method is cascading; the product stream from an upstream reaction can be used as the feedstock in the next downstream reaction. The method includes the steps of deconstructing cellulose to yield a product mixture comprising levulinic acid and formic acid, converting the levulinic acid to .gamma.-valerolactone, and converting the .gamma.-valerolactone to pentanoic acid. Alternatively, the .gamma.-valerolactone can be converted to a mixture of n-butenes. The pentanoic acid so formed can be further reacted to yield a host of valuable products. For example, the pentanoic acid can be decarboxylated yield 1-butene or ketonized to yield 5-nonanone. The 5-nonanone can be hydrodeoxygenated to yield nonane, or 5-nonanone can be reduced to yield 5-nonanol. The 5-nonanol can be dehydrated to yield nonene, which can be dimerized to yield a mixture of C.sub.9 and C.sub.18 olefins, which can be hydrogenated to yield a mixture of alkanes. Alternatively, the nonene may be isomerized to yield a mixture of branched olefins, which can be hydrogenated to yield a mixture of branched alkanes. The mixture of n-butenes formed from .gamma.-valerolactone can also be subjected to isomerization and oligomerization to yield olefins in the gasoline, jet and Diesel fuel ranges.

Dumesic, James A. (Verona, WI); Ruiz, Juan Carlos Serrano (Madison, WI); West, Ryan M. (Madison, WI)

2012-04-03T23:59:59.000Z

349

STATEMENT OF CONSIDERATIONS REQUEST BY E. I. DuPONT de NEMOURS...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the waived invention is suspended until approved in writing by the DOE. WAIVER ACTION - ABSTRACT W(A)-03-026 (CH-1151) REQUESTOR CONTRACT SCOPE OF WORK RATIONALE FOR DECISION...

350

Trp22, Trp24, and Tyr8 Play a Pivotal Role in the Binding of the Family 10 Cellulose-Binding Module from Pseudomonas Xylanase A to Insoluble Ligands+  

E-Print Network (OSTI)

-bromosuccinimide indicated that Trp22 and Trp24 were on the surface of the protein, while Trp7 was buried. Collectively of five CBMs that bind cellulose and one that interacts with xylan, from five different families, have been solved (3-8). Each protein contains several surface aromatic residues, which site

Williamson, Mike P.

351

Building a foundation for structure-based cellulosome design for cellulosic ethanol: Insight into cohesin-dockerin complexation from computer simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

Foundation for Structure-Based Cellulosome Design for Foundation for Structure-Based Cellulosome Design for Cellulosic Ethanol: Insight into Cohesin-Dockerin Complexation from Computer Simulation Jiancong Xu, 1,3 Michael Crowley, 2,3 and Jeremy C. Smith 1,3 1 Center for Molecular Biophysics, Building 6011, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA. 2 Chemical and Biosciences Center, National Renewable Energy Laboratory, 1617 Cole Blvd, Golden, CO, 80401-3393, USA 3 BioEnergy Science Center Corresponding author. Jiancong Xu, Building 6011, MS6309, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37830, USA; E-mail: xuj1@ornl.gov; Phone: 865-241-9111; Fax: 865-576-7651. Running title. Computer simulation of cohesin-dockerin complexes. Manuscript pages: 29 Supplementary material pages: 4

352

Conversion for Avicel and AFEX pretreated corn stover by Clostridium thermocellum and simultaneous saccharification and fermentation: Insights into microbial conversion of pretreated cellulosic biomass  

NLE Websites -- All DOE Office Websites (Extended Search)

for for Avicel and AFEX pretreated corn stover by Clostridium thermocellum and simultaneous saccharification and fermentation: Insights into microbial conversion of pretreated cellulosic biomass Xiongjun Shao a , Mingjie Jin b,c , Anna Guseva a , Chaogang Liu d , Venkatesh Balan b,c , David Hogsett d , Bruce E. Dale b,c , Lee Lynd a,d,⇑ a Thayer School of Engineering at Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA b Biomass Conversion Research Laboratory (BCRL), Department of Chemical Engineering and Materials Science, Michigan State University, MBI Building, 3900 Collins Road, Lansing, MI 48910, USA c Great Lakes Bioenergy Research Center (GLBRC), Michigan State University, East Lansing, MI 48824, USA d Mascoma Corporation, 67 Etna Road, Suite 300, Lebanon, NH 03766, USA a r t i c l e i n f o Article history: Received 8 March 2011 Received in revised form 6 May 2011 Accepted

353

One-step production of lactate from cellulose as the sole carbon source without any other organic nutrient by recombinant cellulolytic Bacillus subtilis  

NLE Websites -- All DOE Office Websites (Extended Search)

step step production of lactate from cellulose as the sole carbon source without any other organic nutrient by recombinant cellulolytic Bacillus subtilis Xiao-Zhou Zhang a , Noppadon Sathitsuksanoh a,b , Zhiguang Zhu a , Y.-H. Percival Zhang a,b,c,n a Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA 24061, USA b Institute for Critical Technology and Applied Science, Virginia Tech, Blacksburg, VA 24061, USA c BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA a r t i c l e i n f o Article history: Received 28 December 2010 Received in revised form 9 April 2011 Accepted 25 April 2011 Keywords: Bacillus subtilis Cellulase engineering Consolidated bioprocessing Endoglucanase Lactate Metabolic engineering Directed evolution a b s t r a c t Although intensive efforts have been made to create recombinant cellulolytic microorganisms,

354

MN Center for Renewable Energy: Cellulosic Ethanol, Optimization of Bio-fuels in Internal Combustion Engines, & Course Development for Technicians in These Areas  

SciTech Connect

This final report for Grant #DE-FG02-06ER64241, MN Center for Renewable Energy, will address the shared institutional work done by Minnesota State University, Mankato and Minnesota West Community and Technical College during the time period of July 1, 2006 to December 30, 2008. There was a no-cost extension request approved for the purpose of finalizing some of the work. The grant objectives broadly stated were to 1) develop educational curriculum to train technicians in wind and ethanol renewable energy, 2) determine the value of cattails as a biomass crop for production of cellulosic ethanol, and 3) research in Optimization of Bio-Fuels in Internal Combustion Engines. The funding for the MN Center for Renewable Energy was spent on specific projects related to the work of the Center.

John Frey

2009-02-22T23:59:59.000Z

355

Catalytic conversion of cellulose to liquid hydrocarbon fuels by progressive removal of oxygen to facilitate separation processes and achieve high selectivities  

DOE Patents (OSTI)

Described is a method to make liquid chemicals. The method includes deconstructing cellulose to yield a product mixture comprising levulinic acid and formic acid, converting the levulinic acid to .gamma.-valerolactone, and converting the .gamma.-valerolactone to pentanoic acid. Alternatively, the .gamma.-valerolactone can be conveted to a mixture of n-butenes. The pentanoic acid can be decarboxylated yield 1-butene or ketonized to yield 5-nonanone. The 5-nonanone can be hydrodeoxygenated to yield nonane, or 5-nonanone can be reduced to yield 5-nonanol. The 5-nonanol can be dehydrated to yield nonene, which can be dimerized to yield a mixture of C.sub.9 and C.sub.18 olefins, which can be hydrogenated to yield a mixture of alkanes.

Dumesic, James A [Verona, WI; Ruiz, Juan Carlos Serrano [Madison, WI; West, Ryan M [Madison, WI

2014-01-07T23:59:59.000Z

356

Synthesis and characterization of superabsorbent polymer prepared by radiation-induced graft copolymerization of acrylamide onto carboxymethyl cellulose for controlled release of agrochemicals  

Science Journals Connector (OSTI)

Abstract Superabsorbent polymer (SAP) was synthesized by radiation-induced grafting of acrylamide (AM) onto carboxymethyl cellulose (CMC) in the presence of a crosslinking agent, N,N?-methylenebisacrylamide (MBA). The effects of various parameters, such as dose, the amount of CMC, AM, MBA and ionic strength on the swelling ratio were investigated. In order to evaluate its controlled release potential, SAP was loaded with potassium nitrate (KNO3) as an agrochemical model and its potential for controlled release of KNO3 was studied. The amount of released KNO3 was analyzed by an inductively coupled plasma mass spectrometry (ICPMS). The results from controlled release experiment agreed very well with the results from swelling experiment. The synthesized SAP was characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The obtained SAP exhibited a swelling ratio of 190g/g of dry gel.

Kasinee Hemvichian; Auraruk Chanthawong; Phiriyatorn Suwanmala

2014-01-01T23:59:59.000Z

357

DOE/EA-1647: Supplemental Environmental Assessment for the Construction and Operation of a Proposed Cellulosic Ethanol Plant, Range Fuels Soperton Plant, LLC (January 2009)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

S S u p p l e m e n t a l E n v i r o n m e n t a l A s s e s s m e n t a n d N o t i c e o f W e t l a n d s I n v o l v e m e n t Construction and Operation of a Proposed Cellulosic Ethanol Plant, Range Fuels Soperton Plant, LLC (formerly Range Fuels Inc.) Treutlen County, Georgia DOE/EA 1647 Prepared for U.S. Department of Energy January 2009 Contents Section Page Acronyms and Abbreviations ................................................................................................... v 1.0 Introduction......................................................................................................................1 1.1 Background ..........................................................................................................1 1.2 Purpose and Need for Proposed Action ..........................................................2

358

Development of a novel and environmentally friendly method for the separation of non-inked and inked cellulose fibers in wastepaper  

SciTech Connect

There is currently no method in existence for the separation of non-inked cellulose fibers from the inked fibers in old newsprint (ONP). Current methods for de-inking involve the pulping of the whole paper in the presence of chemicals (caustic sodium hydroxide, diethylenetriaminepentaacetic acid, sodium silicate, hydrogen peroxide, and a surfactant) followed by washing and flotation operations. The result is a mixture of high- and low-quality de-inked secondary fibers and the production of wastewater that has to be rendered harmless prior to its discharge back to the environment. Water-based inks are a particular problem because of the difficulties in recovering the ink particles after their release from ONP by chemical treatment. Currently, only 15 to 20% of the newsprint market in the USA uses water-based inks. The use of such inks is, however, preferable from an environmental point of view. The work reported here solves several problems: (1) a separation of non-inked from inked cellulose fibers in ONP has been accomplished without the use of de-inking chemicals; (2) the ink is not released to any great extent from the inked fibers; (3) the non-inked fibers contain substantial quantities of long fibers ranging from 1 to 3.5 mm and, as such, are judged to be high-quality secondary fibers that could be recycled without further chemical treatment; and (4) the method is suitable for separating the non-inked and inked fibers in ONP utilizing water- and oil-based inks.

Woodward, J.; Koran, L.J. Jr.; Stephan, L.M. [Oak Ridge National Lab., TN (United States); Wong, K.K.Y.; Saddler, J.H. [Pulp and Paper Research Inst. of Canada, Vancouver, BC (Canada)

1993-09-01T23:59:59.000Z

359

STATEMENT OF CONSIDERATIONS  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

E.I. DU PONT DE NEMOURS AND COMPANY (DUPONT) FOR AN E.I. DU PONT DE NEMOURS AND COMPANY (DUPONT) FOR AN ADVANCE WANER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER DOE CONTRACT NO. DE-FC36-07GOI7056; W(A)-2008-012 The Petitioner, DuPont, has requested a waiver of domestic and foreign patent rights for all subject inventions arising from its participation under the above referenced cooperative agreement entitled "Improvement of Zymomonas Mobilis for Commercial Use in Com-based Biorefineries." The objective of the agreement is aimed at the development of improved organisms for the fermentation of mixed 5-carbon and 6-carbon sugars for use in processes to convert cellulosic biomass to fuel ethanol. The objectives of this project include improving the current recombinant Zymomonas mobilis strain to meet commercial targets of

360

Assessment of fuel-cycle energy use and greenhouse gas emissions for Fischer-Tropsch diesel from coal and cellulosic biomass.  

SciTech Connect

This study expands and uses the GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) model to assess the effects of carbon capture and storage (CCS) technology and cellulosic biomass and coal cofeeding in Fischer-Tropsch (FT) plants on energy use and greenhouse gas (GHG) emissions of FT diesel (FTD). To demonstrate the influence of the coproduct credit methods on FTD life-cycle analysis (LCA) results, two allocation methods based on the energy value and the market revenue of different products and a hybrid method are employed. With the energy-based allocation method, fossil energy use of FTD is less than that of petroleum diesel, and GHG emissions of FTD could be close to zero or even less than zero with CCS when forest residue accounts for 55% or more of the total dry mass input to FTD plants. Without CCS, GHG emissions are reduced to a level equivalent to that from petroleum diesel plants when forest residue accounts for 61% of the total dry mass input. Moreover, we show that coproduct method selection is crucial for LCA results of FTD when a large amount of coproducts is produced.

Xie, X.; Wang, M.; Han, J. (Energy Systems)

2011-04-01T23:59:59.000Z

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


361

A review on pyrolysis of biomass constituents: Mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin  

Science Journals Connector (OSTI)

Abstract The conversion of biomass by thermochemical means is very promising for the substitution of fossil materials in many energy applications. Given the complexity of biomass the main challenge in its use is to obtain products with high yield and purity. For a better understanding of biomass thermochemical conversion, many authors have studied in TG analyzer or at bed scale the individual pyrolysis of its main constituents (i.e. cellulose, hemicelluloses and lignin). Based on these studies, this original work synthesizes the main steps of conversion and the composition of the products obtained from each constituent. Pyrolysis conversion can be described as the superposition of three main pathways (char formation, depolymerization and fragmentation) and secondary reactions. Lignin, which is composed of many benzene rings, gives the highest char yield and its depolymerization leads to various phenols. The depolymerization of the polysaccharides is a source of anhydro-saccharides and furan compounds. The fragmentation of the different constituents and the secondary reactions produce CO, CO2 and small chain compounds. For temperature higher than 500C, the residues obtained from the different constituents present a similar structure, which evolves towards a more condensed polyaromatic form by releasing CH4, CO and H2. As the aromatic rings and their substituent composition have a critical influence on the reactivity of pyrolysis products, a particular attention has been given to their formation. Some mechanisms are proposed to explain the formation of the main products. From the results of this study it is possible to predict the reactivity and energy content of the pyrolysis products and evaluate their potential use as biofuels in renewable applications.

Franois-Xavier Collard; Jol Blin

2014-01-01T23:59:59.000Z

362

Well-to-wheels energy use and greenhouse gas emissions of ethanol from corn, sugarcane and cellulosic biomass for US use  

Science Journals Connector (OSTI)

Globally, bioethanol is the largest volume biofuel used in the transportation sector, with corn-based ethanol production occurring mostly in the US and sugarcane-based ethanol production occurring mostly in Brazil. Advances in technology and the resulting improved productivity in corn and sugarcane farming and ethanol conversion, together with biofuel policies, have contributed to the significant expansion of ethanol production in the past 20years. These improvements have increased the energy and greenhouse gas (GHG) benefits of using bioethanol as opposed to using petroleum gasoline. This article presents results from our most recently updated simulations of energy use and GHG emissions that result from using bioethanol made from several feedstocks. The results were generated with the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model. In particular, based on a consistent and systematic model platform, we estimate life-cycle energy consumption and GHG emissions from using ethanol produced from five feedstocks: corn, sugarcane, corn stover, switchgrass and miscanthus.We quantitatively address the impacts of a few critical factors that affect life-cycle GHG emissions from bioethanol. Even when the highly debated land use change GHG emissions are included, changing from corn to sugarcane and then to cellulosic biomass helps to significantly increase the reductions in energy use and GHG emissions from using bioethanol. Relative to petroleum gasoline, ethanol from corn, sugarcane, corn stover, switchgrass and miscanthus can reduce life-cycle GHG emissions by 1948%, 4062%, 90103%, 7797% and 101115%, respectively. Similar trends have been found with regard to fossil energy benefits for the five bioethanol pathways.

Michael Wang; Jeongwoo Han; Jennifer B Dunn; Hao Cai; Amgad Elgowainy

2012-01-01T23:59:59.000Z

363

EAP services are provided by Bensinger, DuPont & Associates (BDA), Chicago, IL. BDA is not a Lincoln Financial Group  

E-Print Network (OSTI)

Internet 24/7· Acceso telefónico a asesoramiento legal y· 25% descuento en los servicios de seguimiento calling about childcare resources. In other cases, such as severe substance abuse or threats of harm the program via phone or the Internet. Call the toll-free number (877.757.7587) to speak with a consultant 24

Hutcheon, James M.

364

Composition Control in the Direct Laser-Deposition Process R.R. UNOCIC and J.N. DuPONT  

E-Print Network (OSTI)

in the LENS system makes this feasible. Dissimilar powder materials can be placed into separate powder hoppers the composition within each layer deposit. Previous work in the closely related process of fusion welding has changes in a continuous manner from one target value to another. However, with a direct metal- deposition

DuPont, John N.

365

Cellulosic BiofuelsGot Gasoline?  

Science Journals Connector (OSTI)

...site www.fueleconomy.gov. 5 Biomass Research and Development Board, National Biofuels Action Plan , October 2008 , www1.eere.energy.gov/biomass/pdfs/nbap.pdf. 6 Lee S. K. ., Curr. Opin. Biotechnol. 19 , 556 ( 2008 ). 7 Jensen A...

John R. Regalbuto

2009-08-14T23:59:59.000Z

366

Cellulosic BiofuelsGot Gasoline?  

Science Journals Connector (OSTI)

...plant lipid source, algae. Conversion routes may...FORESTRY IMAGES; (ALGAE) ALIKI SAPOUNTZI/ALIKI...renewable biofuels such as biodiesel, the goal is to replace...Aquatic Species Program: Biodiesel from Algae, July 1998 , www.nrel...

John R. Regalbuto

2009-08-14T23:59:59.000Z

367

Cellulosic BiofuelsGot Gasoline?  

Science Journals Connector (OSTI)

...converted to hydrocarbon biofuels. The image on the...plant lipid source, algae. Conversion routes...FORESTRY IMAGES; (ALGAE) ALIKI SAPOUNTZI...United States, the Energy Independence and...plant-derived) biofuels by 2022. Along...starch (5). An alternative is provided by...

John R. Regalbuto

2009-08-14T23:59:59.000Z

368

Cellulose Industries of the West  

Science Journals Connector (OSTI)

Bonneville Power Administration, Portland, Ore. ... THE western United States is a region of contrastswide open spaces thinly populated; areas of dense magnificent forest; mineral resources without stint; areas of concentrated industrial and agricultural activity; areas deficient in rainfall; and areas where rivers fed by bounteous rainfall and perpetual snows roll majestically to the sea, halting occasionally at man's command to irrigate arid but fertile soils or to generate electric power with which to process the varied resources of the region. ...

J. ELTON LODEWICK

1947-09-22T23:59:59.000Z

369

Fuel Ethanol from Cellulosic Biomass  

Science Journals Connector (OSTI)

...impacts as well, which include engine performance, infrastructure...Comparative automotive engine operation when fueled with...biomass with 50% moisture by diesel truck requiring 2000 Btu per...actively studied because of its fundamental interest and applications...

LEE R. LYND; JANET H. CUSHMAN; ROBERTA J. NICHOLS; CHARLES E. WYMAN

1991-03-15T23:59:59.000Z

370

Environmental Sustainability of Cellulosic Energy  

E-Print Network (OSTI)

) reductions relative to gasoline and diesel fuel from fossil fuels. In the United States, this is the first national regulation to evaluate direct and indirect GHG for any product ­ GHG life cycle emissions of a "renewable fuel". In general, the feedstock/conversion/fuel systems that meet RFS2 standards

Sims, Gerald K.

371

Novel Biomass Conversion Process Results in Commercial Joint Venture, The Spectrum of Clean Energy Innovation (Fact Sheet)  

NLE Websites -- All DOE Office Websites (Extended Search)

Novel Biomass Conversion Process Novel Biomass Conversion Process Results in Commercial Joint Venture A novel biomass-to-ethanol process developed, integrated, and demonstrated at pilot scale at the National Renewable Energy Laboratory (NREL) is the basis for one of the world's first cellulosic ethanol demonstration plants. The 74,000-ft 2 plant in Vonore, Tennessee, began production in January 2010. Through a Cooperative Research and Development Agreement (CRADA) with DuPont, NREL and DuPont scientists and engineers developed a unique low-cost pretreatment process that converts raw biomass to ethanol in high yields. The process was developed to facilitate the commercial readiness of lignocellulosic ethanol, which is ethanol produced from nonfood biomass feedstocks such as corn stover, agricultural waste, and energy crops.

372

Final Technical Report: Improvement of Zymomonas mobilis for Commercial Use in Corn-based Biorefineries  

SciTech Connect

Between 2007 and 2010 DuPont conducted a program under DOE award DE-FC36-07GO17056 to develop and improve Zymomonas mobilis as an ethanologen for commercial use in biorefineries to produce cellulosic ethanol. This program followed upon an earlier DOE funded program in which DuPont, in collaboration with the National Renewable Energy Laboratory (NREL) had developed a Zymomonas strain in conjunction with the development of an integrated cellulosic ethanol process. In the current project, we sought to maximize the utility of Zymomonas by adding the pathway to allow fermentation of the minor sugar arabinose, improve the utilization of xylose, improve tolerance to process hydrolysate and reduce the cost of producing the ethanologen. We undertook four major work streams to address these tasks, employing a range of approaches including genetic engineering, adaptation, metabolite and pathway analysis and fermentation process development. Through this project, we have developed a series of strains with improved characteristics versus the starting strain, and demonstrated robust scalability to at least the 200L scale. By a combination of improved ethanol fermentation yield and titer as well as reduced seed train costs, we have been able to reduce the capital investment and minimum ethanol selling price (MESP) by approximately 8.5% and 11% respectively vs. our starting point. Furthermore, the new strains we have developed, coupled with the learnings of this program, provide a platform for further strain improvements and advancement of cellulosic ethanol technology.

Hitz, William D.

2010-12-07T23:59:59.000Z

373

Investigating Commercial Cellulase Performances Toward Specific Biomass Recalcitrance Factors Using Reference Substrates  

SciTech Connect

Three commercial cellulase preparations, Novozymes Cellic Ctec2, Dupont Accellerase 1500, and DSM Cytolase CL, were evaluated for their hydrolytic activity using a set of reference biomass substrates with controlled substrate characteristics. It was found that lignin remains a significant recalcitrance factor to all the preparations, although different enzyme preparations respond to the inhibitory effect of lignin differently. Also, different types of biomass lignin can inhibit cellulose enzymes in different manners. Enhancing enzyme activity toward biomass fiber swelling is an area significantly contributing to potential improvement in cellulose performance. While the degree of polymerization of cellulose in the reference substrates did not present a major recalcitrance factor to Novozymes Cellic Ctec2, cellulose crystallite has been shown to have a significant lower reactivity toward all enzyme mixtures. The presence of polysaccharide monooxygenases (PMOs) in Novozymes Ctec2 appears to enhance enzyme activity toward decrystallization of cellulose. This study demonstrated that reference substrates with controlled chemical and physical characteristics of structural features can be applied as an effective and practical strategy to identify cellulosic enzyme activities toward specific biomass recalcitrance factor(s) and provide specific targets for enzyme improvement.

Ju, Xiaohui; Bowden, Mark E.; Engelhard, Mark H.; Zhang, Xiao

2014-04-01T23:59:59.000Z

374

X-ray Structure of Ammonia?Cellulose I:? New Insights into the Conversion of Cellulose I to Cellulose IIII  

Science Journals Connector (OSTI)

Masahisa Wada , Yoshiharu Nishiyama , and Paul Langan * ... R. Parthasarathi, G. Bellesia, S. P. S. Chundawat, B. E. Dale, P. Langan, and S. Gnanakaran ... R. Parthasarathi, G. Bellesia, S. P. S. Chundawat, B. E. Dale, P. Langan, and S. Gnanakaran ...

Masahisa Wada; Yoshiharu Nishiyama; Paul Langan

2006-03-24T23:59:59.000Z

375

In: Landscape Ecology Research Trends ISBN 978-60456-672-7 Editors: A. Dupont and H. Jacobs, pp. 27-43 2008 Nova Science Publishers, Inc.  

E-Print Network (OSTI)

Yellowstone Ecosystem (GYE) between 1985 and 1999. In many locations across the GYE, conifer forests have conifer forest that increased in density, while the remainder was grassland and shrubland that was encroached upon by conifer forest. Conifer cover increase was more common at lower elevations

Lawrence, Rick L.

376

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...play a significant role in the energy economy of the cell and to be associated...models developed by the National Renewable Energy Laboratory, CBP has the largest...in terms of economics or process energy requirements (400). There is...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

377

Production of ethanol from cellulose (sawdust).  

E-Print Network (OSTI)

??The production of ethanol from food such as corn, cassava etc. is the most predominate way of producing ethanol. This has led to a shortage (more)

Otulugbu, Kingsley

2012-01-01T23:59:59.000Z

378

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...of the treatment plant. In bioenergy scenarios that involve the...Kennedy et al. (324) for a review of work related to measurement...in the process engineering literature to refer to a process step...to provide a comprehensive review of the pretreatment field...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

379

Net energy of cellulosic ethanol from switchgrass  

Science Journals Connector (OSTI)

...bioenergy based on theoretical market prices (1). The majority...2), herbicides (33%), diesel fuel (29%), and seed (23...Nitrogen fertilizer (67%), diesel fuel (18%), and herbicides...In some previous analyses, diesel fuel requirements were based...

M. R. Schmer; K. P. Vogel; R. B. Mitchell; R. K. Perrin

2008-01-01T23:59:59.000Z

380

Project LIBERTY Biorefinery Starts Cellulosic Ethanol Production...  

Office of Environmental Management (EM)

our transportation fueling options," said Secretary Ernest Moniz. "Home-grown biofuels have the potential to further increase our energy security, stimulate rural economic...

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


381

Bacterial Cellulose Composites Opportunities and Challenges  

Energy.gov (U.S. Department of Energy (DOE))

Presentation for the Sustainable Nanomaterials Workshop by Pacific Northwest National Laboratory (PNNL) Forest Service held on June 26, 2012

382

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...located in the periplasmic space of transformed Z. mobilis...detected in the periplasmic space. Few reports of heterologous...coli was poor due to promoter construction (230). With a low-copy-number...evident in the periplasmic space of the recombinant E. coli...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

383

Net energy of cellulosic ethanol from switchgrass  

Science Journals Connector (OSTI)

...converted cropland (28). Life-cycle analysis...hybrids, whereas the remaining improvement...a dry-weight basis. Life Cycle Bioenergy Analysis...cycle power system and a gas turbine combined cycle system...

M. R. Schmer; K. P. Vogel; R. B. Mitchell; R. K. Perrin

2008-01-01T23:59:59.000Z

384

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...biotechnological perspectives. FUNDAMENTALS Structure and Composition...even in terms of such fundamentals as the orientation...intersheet van der Waals forces; despite the weakness...such models in either fundamental or applied contexts...noncovalent interactive forces. Catalytic domains...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

385

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...only foreseeable sustainable source of fuels...methodological challenges associated with...hydrolysis, such integration is essential...conformational energy. Individual...increased maintenance energy associated with...significant role in the energy economy of the...methodological challenges described above...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

386

Production of High Value Cellulose from Tobacco  

SciTech Connect

The Kentucky Rural Energy Supply Program was established in 2005 by a federal direct appropriation to benefit the citizens of the Commonwealth by creating a unified statewide consortium to promote renewable energy and energy efficiency in Kentucky. The U.S. Department of Energyâ??s (DOE) Office of Biomass Programs initially funded the consortium in 2005 with a $2 million operational grant. The Kentucky Rural Energy Consortium (KREC) was formed at the outset of the program to advance energy efficiency and comprehensive research on biomass and bioenergy of importance to Kentucky agriculture, rural communities, and related industries. In recognition of the successful efforts of the program, KREC received an additional $1.96 million federal appropriation in 2008 for renewal of the DOE grant. From the beginning, KREC understood the value of providing a statewide forum for the discussion of Kentuckyâ??s long term energy needs and economic development potential. The new funding allowed KREC to continue to serve as a clearinghouse and support new research and development and outreach programs for energy efficiency and renewable energy.

Berson, R ERic; Dvaid, Keith; McGinley, W Mark; Meduri, Praveen; Clark, Ezra; Dayalan, Ethirajulu; Sumaneskera, Gamini; Donald Colliver, Mahendra Sunkara'

2011-06-15T23:59:59.000Z

387

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...by the National Renewable Energy Laboratory, CBP has the largest...and transient responses to challenges with ethanol or another inhibitor...terms of economics or process energy requirements (400). There...required for cost-effective implementation of CBP in an industrial setting...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

388

Net energy of cellulosic ethanol from switchgrass  

Science Journals Connector (OSTI)

...factors needed to optimize capture of solar energy are lacking...Rankine cycle power system and a gas turbine combined cycle system (9, 44). Energy output was based on the...1991 ) Emissions of Greenhouse Gases from the Use of Transportation Fuels and Electricity...

M. R. Schmer; K. P. Vogel; R. B. Mitchell; R. K. Perrin

2008-01-01T23:59:59.000Z

389

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...the cellulolytic enzyme system of the processing organism...223, 348, 678), steam explosion (546, 581...organisms. Important tools for understanding microbial...been developed. Such tools include systems that allow foreign genes...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

390

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...hydrophobic sequences (593). These leader sequences probably play a decisive role...nascent ascospore envelope. The hydrophobic leader sequence of the SSG1-encoded protein...b-glucanase was directed by the SUC2-encoded leader peptide. The presence of bacterial b-1...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

391

Net energy of cellulosic ethanol from switchgrass  

Science Journals Connector (OSTI)

...conversion technology, which...represents the technology available...stage of development or after...system and a gas turbine combined cycle...2001 ) Development and Use of...and Vehicle Technologies ( Argonne National Laboratory...

M. R. Schmer; K. P. Vogel; R. B. Mitchell; R. K. Perrin

2008-01-01T23:59:59.000Z

392

Microbial Cellulose Utilization: Fundamentals and Biotechnology  

Science Journals Connector (OSTI)

...structure based on minimum conformational energy. Individual models are a source of considerable...in amounts sufficient to provide usable energy to an organism were thought to be carried...between catabolite repression and the energy status of the cell may exist. A study...

Lee R. Lynd; Paul J. Weimer; Willem H. van Zyl; Isak S. Pretorius

2002-09-01T23:59:59.000Z

393

CELLULOSE CHEMISTRY AND TECHNOLOGY Cellulose Chem. Technol., 44 (7-8), 217-221 (2010)  

E-Print Network (OSTI)

, and is still in use today, despite its difficult control of air and water pollution. The viscose process and PATRICK NAVARD* Mines Paris Tech, CEMEF ­ Centre de Mise en Forme des Matériaux, CNRS UMR 7635 BP 2071

Paris-Sud XI, Université de

394

CX-001046: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

046: Categorical Exclusion Determination 046: Categorical Exclusion Determination CX-001046: Categorical Exclusion Determination 25A4374 - Macroalgae Butanol CX(s) Applied: B3.6 Date: 01/29/2010 Location(s): Delaware Office(s): Advanced Research Projects Agency - Energy Develop a commercially viable process for production of biobutanol from Macroalgae (seaweed) as a transformational energy-related project that offers significant advantages over fossil fuels and ethanol as currently made from corn and sugarcane and second generation cellulosic biomass. Macroalgae is a low cost, scalable, and environmentally sustainable biomass. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-001046.pdf More Documents & Publications DuPont's Safety Model and Sustainability Initiatives Advance Patent Waiver W(A)2008-012 Advanced Research Projects Agency -EnergyDepartment

395

Morphological characterization of O-rings from the GCEP long-term test program. [Dupont 1141, 3M 4762 and 4768, and Parker V884-75 O-rings  

SciTech Connect

Based on the results of the morphological and structural characterizations reported herein the following conclusions have been reached. (1) O-rings of any of the four materials studied should last at least 10 years when employed in a standard static seal configuration utilizing a groove that holds the O-ring. (2) Such a static seal provides considerable protection from reaction. (3) The reaction of UF/sub 6/ with the O-ring material is the dominant degradation reaction; however there are effects on a least one compound that appear to be related to HF penetration into the O-ring matrix. The slow nature of the reaction of UF/sub 6/ with the flanged O-rings makes life projections quite difficult using any means. It would appear that one of the best methods for determining the life of these materials would be actual use combined with routine long-term inspection/sampling of a selected typical subset of O-rings. At GCEP conditions it would not be surprising to find the actual life of the O-rings is longer than any anticipated operation time of the plant facility. 16 figures, 1 table.

Hughes, M.R.; Nolan, T.A.

1984-07-30T23:59:59.000Z

396

Saccharification of Cellulose by Recombinant Rhodococcus opacus PD630 Strains  

Science Journals Connector (OSTI)

...production of fuels from renewable biomass, so-called...increase in the world's energy consumption and population...inedible, abundant, and renewable lignocellulosic biomass...the United States and Brazil. The energy density of ethanol is...

Stephan Hetzler; Daniel Brker; Alexander Steinbchel

2013-06-21T23:59:59.000Z

397

Impacts of Variability in Cellulosic Biomass Yields on Energy Security  

Science Journals Connector (OSTI)

Feedstock yield variability needs to be a central part of modeling to ensure that policy makers acknowledge risks to energy supplies and develop strategies or contingency plans that mitigate those risks. ... (1) The Renewable Fuel Standard (RFS) specified in this legislation is a liquid biofuel mandate designed in part to address energy security. ... Without an acknowledgment of variability, there is no basis upon which the emerging biofuel industry and biofuel policy makers can begin to consider and evaluate mitigation options and contingency plans. ...

Kimberley A. Mullins; H. Scott Matthews; W. Michael Griffin; Robert Anex

2014-06-18T23:59:59.000Z

398

LIGNIN BIODEGRADATION AND THE PRODUCTION OF ETHYL ALCOHOL FROM CELLULOSE  

E-Print Network (OSTI)

and Moore, W. E. , Removing lignin from wood with white-rotof carbohydrates on lignin degradation by the white-rotP. and Eriksson, K. -E. , Lignin degradation and utilization

Rosenberg, S.L.

2013-01-01T23:59:59.000Z

399

Secretary Moniz Dedicates Innovative Commercial-Scale Cellulosic Biofuel Plant  

Office of Energy Efficiency and Renewable Energy (EERE)

WASHINGTON Marking another milestone in the Administrations support of clean energy technologies that will diversify our energy portfolio and help transition the U.S. toward a low-carbon future,...

400

An Environmental and Policy Evaluation of Cellulosic Ethanol  

E-Print Network (OSTI)

are exploring the environmental impacts of using this biofuel on a large scale. This dissertation research performed an environmental evaluation using the Life Cycle Assessment technique on Bioenergy Sorghum, a crop which was specifically produced... impacts. Some comprehensive environmental analyses were performed on various biofuels. Kaltschmitt et al. (1997) presented a study on a number of bioenergy carriers compared to fossil energy carriers. MacLean et al. (2000) performed a high level...

Hurtado, Lisa Diane

2012-07-16T23:59:59.000Z

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


401

Enzymatic Degradation of Cellulose by the Filamentous Fungus Neurospora crassa  

E-Print Network (OSTI)

for use in biomass conversion, Biotechnol Biofuels 1, 10.for Biochemical Conversion of Lignocellulosic Biomass toto the enzymatic conversion of biomass to sugars. Over the

Phillips, Christopher Michael

2011-01-01T23:59:59.000Z

402

Review of Recent Pilot Scale Cellulosic Ethanol Demonstration...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Laboratory b13foustop-1.pdf More Documents & Publications Advanced Bio-based Jet Fuel Cross-cutting Technologies for Advanced Biofuels Process Design and Economics for...

403

Saccharification of Cellulose by Recombinant Rhodococcus opacus PD630 Strains  

Science Journals Connector (OSTI)

...and security of fossil energy carriers have led to...increase in the world's energy consumption and population...dominates the biofuel market, especially in the United States and Brazil. The energy density of ethanol is...Santa Clara, CA, USA) was used according...

Stephan Hetzler; Daniel Brker; Alexander Steinbchel

2013-06-21T23:59:59.000Z

404

Extraction of cellulose from cacti / Moses Seleke Monye.  

E-Print Network (OSTI)

??Paraffin is used as a main household energy source for cooking, lighting and heating by low-income communities in South Africa. It is highly inflammable and (more)

Monye, Moses Seleke

2012-01-01T23:59:59.000Z

405

Breaking the Biological Barriers to Cellulosic Ethanol, June...  

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

are additional concerns. Annual U.S. transportation emissions of the greenhouse gas (GHG) carbon dioxide (CO 2 ) are projected to increase from about 1.9 billion metric...

406

Enzymemicrobe synergy during cellulose hydrolysis by Clostridium thermocellum  

Science Journals Connector (OSTI)

...Hames B Ruiz R Scarlata C Sluiter J Templeton D Crocker D ( 2006 ) Laboratory Analytic Procedure LAP-002 , http://www1.eere.energy.gov/biomass/analytical_procedures.html . 34 Bradford MM ( 1976 ) Anal Biochem 72 : 248 254 . 35 Zhang...

Yanpin Lu; Yi-Heng Percival Zhang; Lee R. Lynd

2006-01-01T23:59:59.000Z

407

Resistance of Weathered Cotton Cellulose to Cellulase Action  

Science Journals Connector (OSTI)

...subjected to 24 hr of ball milling. The ground samples and some...results were found after Wiley milling, although the weathered samples...activity. Results from the ball-milling in- dicate that resistance...Determination of some components in corn syrup by gas-liquid chromatography...

Arthur M. Kaplan; Mary Mandels; Elizabeth Pillion; Marvin Greenberger

1970-07-01T23:59:59.000Z

408

Microbial Fuel Cells for Recycle of Process Water from Cellulosic...  

NLE Websites -- All DOE Office Websites (Extended Search)

to improve ethanol process economics in biorefineries Decreased water consumption Enables wastewater recycling Electricity or hydrogen generation Inexpensive Versatile Applications...

409

EFFECT OF NITROGEN OXIDE PRETREATMENTS ON ENZYMATIC HYDROLYSIS OF CELLULOSE  

E-Print Network (OSTI)

oxygen react to give nitrogen dioxide, which rapidly reactsis simultaneous, the nitrogen dioxide formed reacts withaccomplished by absorbing nitrogen dioxide in water, usually

Borrevik, R.K.

2011-01-01T23:59:59.000Z

410

Preliminary Economics for Hydrocarbon Fuel Production from Cellulosic Sugars  

SciTech Connect

Biorefinery process and economic models built in CHEMCAD and a preliminary, genome-scale metabolic model for the oleaginous yeast Lipomyces starkeyi were used to simulate the bioconversion of corn stover to lipids, and the upgrading of these hydrocarbon precursors to diesel and jet fuel. The metabolic model was based on the recently released genome sequence for L. starkeyi and on metabolic pathway information from the literature. The process model was based on bioconversion, lipid extraction, and lipid oil upgrading data found in literature, on new laboratory experimental data, and on yield predictions from the preliminary L. starkeyi metabolic model. The current plant gate production cost for a distillate-range hydrocarbon fuel was estimated by the process model Base Case to be $9.5/gallon ($9.0 /gallon of gasoline equivalent) with assumptions of 2011$, 10% internal return on investment, and 2205 ton/day dry feed rate. Opportunities for reducing the cost to below $5.0/gallon, such as improving bioconversion lipid yield and hydrogenation catalyst selectivity, are presented in a Target Case. The process and economic models developed for this work will be updated in 2014 with new experimental data and predictions from a refined metabolic network model for L. starkeyi. Attaining a production cost of $3.0/gallon will require finding higher value uses for lignin other than power generation, such as conversion to additional fuel or to a co-product.

Collett, James R.; Meyer, Pimphan A.; Jones, Susanne B.

2014-05-18T23:59:59.000Z

411

High pressure HC1 conversion of cellulose to glucose  

E-Print Network (OSTI)

Figure 9 . Schematic of Extruder Screw Hydrolysis System ( 1i v e r s i t y . extruders, twin-screw developed f o r the

Antonoplis, Robert Alexander; Blanch, Harvey W.; Wilke, Charles R.

1981-01-01T23:59:59.000Z

412

Understanding the Growth of the Cellulosic Ethanol Industry  

SciTech Connect

This report identifies, outlines, and documents a set of plausible scenarios for producing significant quantities of lignocellulosic ethanol in 2017. These scenarios can provide guidance for setting government policy and targeting government investment to the areas with greatest potential impact.

Sandor, D.; Wallace, R.; Peterson, S.

2008-04-01T23:59:59.000Z

413

Saccharification of Cellulose by Recombinant Rhodococcus opacus PD630 Strains  

Science Journals Connector (OSTI)

...Keasling. 2008. Metabolic engineering of microorganisms for...synthetic biology to fuels. Curr. Opin. Biotechnol...molecules through metabolic engineering. Science 330 :1355-1358...and H Noda. 2001. Biodiesel fuel production by transesterification...

Stephan Hetzler; Daniel Brker; Alexander Steinbchel

2013-06-21T23:59:59.000Z

414

Photobactericidal Porphyrin-Cellulose Nanocrystals: Synthesis, Characterization, and Antimicrobial Properties  

Science Journals Connector (OSTI)

Consequently, more research into effective surface disinfection and alternative materials (fabrics, plastics, or coatings) with antimicrobial and other bioactive characteristics is desirable. ... (14) Disadvantages of currently available materials are the loss of antimicrobial activity by leaching of the biocide in noncovalent systems, consumption of the germicidal ability, environmentally hazardous agents, or dependency on direct contact of the antimicrobial entity with the microorganism. ... Singlet oxygen, as opposed to some common disinfectants such as chlorine and hypochlorite, can be regarded as an environmentally benign germicide (short lifetime of 106 s in water(17) and reverting back to harmless ground state oxygen if unreacted). ...

Elke Feese; Hasan Sadeghifar; Hanna S. Gracz; Dimitris S. Argyropoulos; Reza A. Ghiladi

2011-08-12T23:59:59.000Z

415

Pyrolysis and patterning of Acetobacter xylinum cellulose for hydrogen storage.  

E-Print Network (OSTI)

?? The storage of hydrogen poses numerous technological challenges. Hydrogen gas has one of the highest chemical energy densities per weight of any chemical or (more)

O'Brien, Brendan

2009-01-01T23:59:59.000Z

416

Advancing Cellulosic Ethanol for Large Scale Sustainable Transportation  

E-Print Network (OSTI)

Metrics for Ethanol Petroleum in/Energy out Fossil energyMetrics for Ethanol Petroleum in/Energy out Fossil energyMetrics for Ethanol Petroleum in/Energy out Fossil energy

Wyman, C

2007-01-01T23:59:59.000Z

417

The economics of corn cob cellulosic ethanol for northwest Iowa.  

E-Print Network (OSTI)

??To meet the demand of the 2007 Energy Bill will require a new approach to ethanol production in the United States. The question persists: how (more)

Schany, William J.

2012-01-01T23:59:59.000Z

418

Network Structure of Cellulose Ethers Used in Pharmaceutical Applications  

E-Print Network (OSTI)

, have studied these two processes (1,3­6). Significant models have been proposed by Peppas molecules dissolve in water and are released by diffusion. The processes of swelling, ero- sion, and drug mathematical models that include all interrelated parameters and that fit accurately the experimental results

Peppas, Nicholas A.

419

EFFECT OF NITROGEN OXIDE PRETREATMENTS ON ENZYMATIC HYDROLYSIS OF CELLULOSE  

E-Print Network (OSTI)

Jerusalem, loR. Parkinson, Tappi, Meller, Holzforschung,L.L. Schaleger and D.L. Brink, Tappi, No.4, 65 ( 1978). N.I.Holocellulose in Wood," Tappi Standard T9 m-54. C.R.

Borrevik, R.K.

2011-01-01T23:59:59.000Z

420

December 14, 2009, Meeting with DOE - DuPonts Safety Model and Sustainability Initiatives  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Overview of DuPont's Safety Model and Sustainability Initiatives Overview of DuPont's Safety Model and Sustainability Initiatives Meeting with DOE December 14, 2009; 2-4 pm Agenda Safety Philosophy Culture, Core Values, and Key Elements DuPont's Implementation Strategy Training Resources Safety Structure and Organization Benefits and Stumbling Blocks Implementation Suggestions and Strategies Evolving into a new, safer, and more sustainable culture DuPont's Sustainability Program Overview of DuPont's Sustainability Program and the Link between Safety and Sustainability Topics to Consider - DuPont Safety Model Presentation to DOE Undersecretaries - December 14, 2009 DuPont Safety Model * DuPont's safety model serves as a core value, is fully integrated into the company's culture, is strongly endorsed by leadership and is considered essential to company

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


421

The effects of chemistry on the colloidal behavior of alumina slurries and copper nanohardness for copper chemical mechanical planarization  

E-Print Network (OSTI)

Arizona (2007). DuPont Air Products NanoMaterials L.L.C.February 2008). DuPont Air Products NanoMaterials L.L.C.Arizona (2007). DuPont Air Products NanoMaterials L.L.C.

Ihnfeldt, Robin Veronica

2008-01-01T23:59:59.000Z

422

DOE Joint Genome Institute 2008 Progress Report  

E-Print Network (OSTI)

possible to produce ethanol from cellulose on an industrialof breaking down cellulose into ethanol, considered by someof cellulosic ethanol, carbohydrate polymers (cellulose and

Gilbert, David

2009-01-01T23:59:59.000Z

423

Synergistic Hydrolysis of Carboxymethyl Cellulose and Acid-Swollen Cellulose by Two Endoglucanases (CelZ and CelY) fromErwinia chrysanthemi  

Science Journals Connector (OSTI)

...increases in the rate of production and...Department of Energy, Office of Basic Energy Science (FG02-96ER20222); and the Florida Agricultural Experiment...CelY increased the rate and extent of hydrolysis...University of Florida, Gainesville...

Shengde Zhou; Lonnie O. Ingram

2000-10-01T23:59:59.000Z

424

Cellulose microfibril crystallinity is reduced by mutating C-terminal transmembrane region residues CESA1A903V and CESA3T942I of cellulose synthase  

Science Journals Connector (OSTI)

...Buenos Aires, Buenos Aires C1428EGA, Argentina; g Faculty of Science, University of Ontario...fermentable sugar . Glob Change Biol Bioenergy 1 : 51...fermentable sugar. Glob Change Biol Bioenergy 1:51 ZZQQhy61. 14. Segal L, Creely...

Darby M. Harris; Kendall Corbin; Tuo Wang; Ryan Gutierrez; Ana L. Bertolo; Carloalberto Petti; Detlef-M. Smilgies; Jos Manuel Estevez; Dario Bonetta; Breeanna R. Urbanowicz; David W. Ehrhardt; Chris R. Somerville; Jocelyn K. C. Rose; Mei Hong; Seth DeBolt

2012-01-01T23:59:59.000Z

425

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio May 24, 2012 - 5:08pm Addthis Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs What does this project do? DuPont's newly expanded solar manufacturing plant in Circleville, Ohio, produces thin film materials to strengthen the durability of solar panels. To support the expansion project, DuPont created 70 new operational

426

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio May 24, 2012 - 5:08pm Addthis Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs What does this project do? DuPont's newly expanded solar manufacturing plant in Circleville, Ohio, produces thin film materials to strengthen the durability of solar panels. To support the expansion project, DuPont created 70 new operational

427

Improving Steam System Performance: A Sourcebook for Industry...  

Office of Environmental Management (EM)

Recycled Energy Development* Steve Connor, Cleaver-Brooks Robert Crosby, Baltimore Gas and Electric Dan Dvorak, Dupont Fred Fendt, DOW Chemical Company Bruce Gorelick,...

428

E-Print Network 3.0 - atmospheric iron corrosion Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

atmosphere and an oxidizing... -2 Chromium additions seemed to help improve the corrosion resistance of the ... Source: DuPont, John N. - Department of Materials Science and...

429

STATEMENT OF CONSIDERATIONS REQUEST BY CHEMICAL INDUSTRY ENVIRONMENTAL...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

up the Petitioner's company are major chemical manufacturing companies, and includes Air Products and Chemicals, Akzo Nobel, Battelle, DuPont, NL Industries, OxyChem, and...

430

E  

NLE Websites -- All DOE Office Websites (Extended Search)

cultural change, developing relationships with customers, advocating innovation, and cost cutting. She has industry experience with DuPont, TRW, Xerox, Coca-Cola Enterprises,...

431

Investigating Commercial Cellulase Performances Toward Specific...  

NLE Websites -- All DOE Office Websites (Extended Search)

cellulase preparations, Novozymes Cellic Ctec2, Dupont Accellerase 1500, and DSM Cytolase CL, were evaluated for their hydrolytic activity using a set of reference...

432

fem | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

University Manuscript Presentation Improving the Weldability of Fe-Cr-Al Alloys Through TiC Additions John Dupont, Lehigh University Manuscript Presentation Session 2 - Corrosion...

433

P e N N S T A T e e N g i N e e r i N gU n d e r g r a d U a t e M a j o r i n  

E-Print Network (OSTI)

at organizations such as AT&T, Bechtel Bettis, DuPont, ExxonMobil, Ford, GE, IBM, Lockheed Martin, Lucent

Demirel, Melik C.

434

Vita  

E-Print Network (OSTI)

59. J. Douglas, Jr., and T. Dupont, A nite element collocation method for quasilinear parabolic ..... Multigrid Methods (T. A. Manteu el and S. F. McCormick, eds.)...

435

Organocatalytic conversion of cellulose into a platform Benjamin R. Caes,a  

E-Print Network (OSTI)

). These methods typically employ harsh reaction conditions or toxic heavy metal catalysts, deterring large toxic heavy metal catalysts. Isotopic labeling studies indicate that the key aldose-to- ketose for this conversion. The inefficiency of solid acid catalysts and the toxicity of heavy metals could diminish

Raines, Ronald T.

436

PILOT PLANT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

5 EthanolBazua, D.C. and C.R. Wilke, "Ethanol Effects on the Kineticsto the Production of Ethanol, LBL-5963. (Submitted to

Wilke, C.R.

2010-01-01T23:59:59.000Z

437

Chemically Cross-Linked Cellulose Nanocrystal Aerogels with Shape Recovery and Superabsorbent Properties  

Science Journals Connector (OSTI)

Specifically, the aerogel shape recovered more than 85% after 80% compression, even after 20 compress and release cycles. ... (13-23) NFC aerogels based on physical cross-linking have been proposed as oil absorbents, filters, and antibacterial substrates. ... Whatman cotton ashless filter aid was purchased from GE Healthcare Canada, and sulfuric acid (9598%) was purchased from VWR Canada. ...

Xuan Yang; Emily D. Cranston

2014-09-24T23:59:59.000Z

438

Coordinated Cyclic-Di-GMP Repression of Salmonella Motility through YcgR and Cellulose  

Science Journals Connector (OSTI)

...YcgR interaction with flagellar motor proteins. In a contrary situation...will have to be elucidated in future studies. In conclusion, the...receptors and controls flagellar motor function in Caulobacter crescentus...protein YcgR controls flagellar motor direction and speed to affect...

Violeta Zorraquino; Begoa Garca; Cristina Latasa; Maite Echeverz; Alejandro Toledo-Arana; Jaione Valle; Iigo Lasa; Cristina Solano

2012-11-16T23:59:59.000Z

439

Review: Continuous hydrolysis and fermentation for cellulosic ethanol production Simone Brethauer, Charles E. Wyman *  

E-Print Network (OSTI)

, Charles E. Wyman * Center for Environmental Research and Technology and Chemical and Environmental costs, and reduced vessel down time for cleaning and filling. On the other hand, these systems are more the world uses, far more than derived from coal, natural gas, hydroelectric power, nuclear energy

California at Riverside, University of

440

Cellulose Binding Domains of a Phytophthora Cell Wall Protein Are Novel Pathogen-Associated Molecular Patterns  

Science Journals Connector (OSTI)

...except after heat treatment of the medium (Meindl...and neutralized by dialysis against 100 volumes of water at 4C for 16 h...strain GV3101 by electroporation, and transformed...et al. (1980). Electron Microscopy and Immunogold...

Elodie Gaulin; Nani Dramé; Claude Lafitte; Trudy Torto-Alalibo; Yves Martinez; Carine Ameline-Torregrosa; Moustafa Khatib; Honoré Mazarguil; François Villalba-Mateos; Sophien Kamoun; Christian Mazars; Bernard Dumas; Arnaud Bottin; Marie-Thérèse Esquerré-Tugayé; Martina Rickauer

2006-06-09T23:59:59.000Z

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


441

The Potential of Cellulosic Ethanol Production from Municipal Solid Waste: A Technical and Economic Evaluation  

E-Print Network (OSTI)

e.g. corn stover, wheat straw), herbaceous energy crops (for Corn Stover. Golden, Colorado: National Renewable Energy

Shi, Jian; Ebrik, Mirvat; Yang, Bin; Wyman, Charles E.

2009-01-01T23:59:59.000Z

442

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

for Corn Stover. National Renewable Energy Laboratory, NREL/for corn stover. National Renewable Energy Laboratory.Corn stover was provided by the National Renewable Energy

Qing, Qing

2010-01-01T23:59:59.000Z

443

Consolidated Bio-Processing of Cellulosic Biomass for Efficient Biofuel Production Using Yeast Consortium  

E-Print Network (OSTI)

Variation in corn stover composition and energy content withi) energy crops grown for fuel production (corn, sugarcane,

Goyal, Garima

2011-01-01T23:59:59.000Z

444

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

removal of hydrophobic compounds (Escalante et al. , 2005), which makes surfactants good candidates as pretreatment additives.

Qing, Qing

2010-01-01T23:59:59.000Z

445

DECOMPOSITION OF LIGNIN AND CELLOBIOSE IN RELATION TO THE ENZYMATIC HYDROLYSIS OF CELLULOSE  

E-Print Network (OSTI)

R. Wilke, "Studies of Lignin-Degrading Fungi and EnzymaticApril 1976). Kirk, T. Kent, "Lignin-degrading Enzyme System"and John M. Harkin, "Lignin Biodegradation and Bioconversion

Yamanaka, Y.

2010-01-01T23:59:59.000Z

446

The Effect of Iron Oxide on Dissimilatory Nitrate Reduction to Ammonium (DNRA) in Lignin Cellulose medium  

E-Print Network (OSTI)

of anthropogenic nitrogen into coastal habitats. Sources of nitrogen loading include agricultural and home Cod, Mass., indicate that nitrogen loading rates are directly related to macroalgal populations. A PRB contains a mixture of woodchips, limestone, sand, and gravel which provide a high carbon

Vallino, Joseph J.

447

Optimization and Simulation for Designing the Supply Chain of the Cellulosic Biofuel Industry  

E-Print Network (OSTI)

.e., chapters V and VI) of this dissertation. Professor Searcy contributed to the model formulation and data described in Chapters V and VI. His domain knowledge in agriculture and bioenergy areas was a base to define the problem for this dissertation. His... of biofuel, using another example in Greece. Hamelinck et al. (2007) addressed international bioenergy logistics. They reported that, in Sweden and the Netherlands, several green-energy producers already import biomass, requiring the supply of long...

An, Heungjo

2012-02-14T23:59:59.000Z

448

Cellulose Nanomaterials: The Sustainable Material of Choice for the 21st Century  

Energy.gov (U.S. Department of Energy (DOE))

Presentation for the Sustainable Nanomaterials Workshop by USDA Forest Service held on June 26, 2012

449

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

to Ethanol. Enzymatic Conversion of Biomass for Fuelsto Ethanol. Enzymatic Conversion of Biomass for FuelsBiomass. Enzymatic Conversion of Biomass for Fuels

Qing, Qing

2010-01-01T23:59:59.000Z

450

Consolidated Bio-Processing of Cellulosic Biomass for Efficient Biofuel Production Using Yeast Consortium  

E-Print Network (OSTI)

quantities for efficient biomass conversion to fermentabledevelopment studies for conversion of biomass to sugars andalternative is the conversion of plant biomass into ethanol.

Goyal, Garima

2011-01-01T23:59:59.000Z

451

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

Development Studies for Conversion of Biomass to Sugars andDevelopment Studies for Conversion of Biomass to Sugars andof the biomass, (2) the extent of conversion to glucose,

Wilke, C.R.

2011-01-01T23:59:59.000Z

452

UTILIZATION OF IMMOBILIZED B-GLUCOSIDASE IN THE ENZYMATIC HYDROLYSIS OF CELLULOSE.  

E-Print Network (OSTI)

after 15 minutes by rapid cooling in an ice bath followed bywas stopped by rapid cooling in an ice bath followed byice bath for at least two minutes with occasional motion on the sample tube to effect rapid cooling.

Isaacs, S.H.

2011-01-01T23:59:59.000Z

453

E-Print Network 3.0 - alpha-terthiophene-cellulose triacetate...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Restoration Technologies 8 68Ga-1,4,7-Triazacyclononane-1,4,7-triacetic acid-polyethylene glycol-single-chain Cys-tagged vascular endothelial growth Summary:...

454

Experimental investigations of rheological properties of sodium carboxymethyl cellulose and polyvinyl alcohol  

E-Print Network (OSTI)

TUBE FLOW RATE, cm sec Figure 6. Tube volumetric flow rate versus shear stress at tube wall for SCNC. 48 0 O X 4J D 0 0 5 K LIJ I- X O K -IO ISO 250 350 SHEAR STRESS AT WALL PF FLOW TUBE, dynes cm Figure 7. Error scatter diagram... C 0 CI3 O 8 O & & ss~&P 'SS38LS 8V3HS O 600 / 500 6 'D . 400 ~ 500 I- I- cn 20 ~0 0 10 0, 5 1. 0 1. 5 TUBE FLOW RATE, cm sec 2. 0 Figure 9. 'rube I ' s. , rate s ~ raus shear stress at tube wall for PVA. 52 at the wall of a...

Fort, Ben Franklin

2012-06-07T23:59:59.000Z

455

Access of Cellulase to Cellulose and Lignin for Poplar Solids Produced by Leading Pretreatment Technologies  

E-Print Network (OSTI)

impedes access of enzymes to xylan more than to glucan, which in turn affects glucan accessibility on their surface,1­4 and several literature studies reported a strong correlation between rates

California at Riverside, University of

456

ORIGINAL PAPER Reactor scale up for biological conversion of cellulosic biomass  

E-Print Network (OSTI)

(g/L) [I] Solids concentration (g/L) [X] Xylan concentration (g/L) ap Particle surface area per Temperature difference between tank inner surface and bulk liquid (°C) dp Particle diameter (m) e Power per/L) hi Heat transfer coefficient in inner tank surface [W/ (m2 K)] k Thermal conductivity [W/(m K)] k

California at Riverside, University of

457

Enzymatically based cellulosic ethanol production technology was selected as a key area for biomass  

E-Print Network (OSTI)

.g., crystallinity, degree of polymerization and accessible surface area) and soluble and insoluble biomass components (e.g., oligomeric xylan and lignin) released in pretreatment, and their effects

California at Riverside, University of

458

The Structure of the Catalytic Domain of a Plant Cellulose Synthase and Its Assembly into Dimers  

Science Journals Connector (OSTI)

...involved directly in (14)-beta-d-xylan synthesis, but two nonredundant glycosyl...reproducibility of the position of the protein surfaces were on the order of 1 to 2 grid points...Supplemental Movie 2. Determination 3D Surface Contour Structure from Small-Angle X-Ray...

Anna T. Olek; Catherine Rayon; Lee Makowski; Hyung Rae Kim; Peter Ciesielski; John Badger; Lake N. Paul; Subhangi Ghosh; Daisuke Kihara; Michael Crowley; Michael E. Himmel; Jeffrey T. Bolin; Nicholas C. Carpita

2014-07-10T23:59:59.000Z

459

Cellulosic biomass could help meet Californias transportation fuel needs  

E-Print Network (OSTI)

Lignin-blocking treatment of biomass and uses thereof. Yangin the conversion of biomass to ethanol. American InstituteNY. p 15. Dale BE. 1983. Biomass refining protein and

Wyman, Charles E.; Yang, Bin

2009-01-01T23:59:59.000Z

460

The Economic and Financial Implications of Supplying a Bioenergy Conversion Facility with Cellulosic Biomass Feedstocks  

E-Print Network (OSTI)

biomass feedstocks. Targeting the Middle Gulf Coast, Edna-Ganado, Texas area, mathematical programming in the form of a cost-minimization linear programming model(Sorghasaurus) is used to assess the financial and economic logistics costs for supplying a...

McLaughlin, Will

2012-02-14T23:59:59.000Z

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


461

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

Enzymatic Conversion of Biomass for Fuels Production, 566,B. , 2002. Lignocellulosic Biomass to Ethanol Process DesignSummary of findings from the Biomass Refining Consortium for

Qing, Qing

2010-01-01T23:59:59.000Z

462

Guar Seed -Mannan Synthase Is a Member of the Cellulose Synthase Super Gene Family  

Science Journals Connector (OSTI)

...carbohydrates in the seeds of some plants...analogous to that of starch in cereal grains. For example...developing guar seed endosperm in digitonin...carbohydrates in the seeds of some plants...analogous to that of starch in cereal grains. For example...

Kanwarpal S. Dhugga; Roberto Barreiro; Brad Whitten; Kevin Stecca; Jan Hazebroek; Gursharn S. Randhawa; Maureen Dolan; Anthony J. Kinney; Dwight Tomes; Scott Nichols; Paul Anderson

2004-01-16T23:59:59.000Z

463

Functional Assembly of Minicellulosomes on the Saccharomyces cerevisiae Cell Surface for Cellulose Hydrolysis and Ethanol Production  

Science Journals Connector (OSTI)

...inexpensive feedstock for sustainable bioethanol production...S. Kang. 1999. -Integration of endo/exo-glucanase...from lignocellulose: a challenge for metabolic engineering and process integration. Appl. Microbiol. Biotechnol...

Shen-Long Tsai; Jeongseok Oh; Shailendra Singh; Ruizhen Chen; Wilfred Chen

2009-08-14T23:59:59.000Z

464

PMMAcellulose acetate phthalate nanocomposites reinforced with silane-treated nanoclay  

Science Journals Connector (OSTI)

Figure2 shows the XRD patterns of nanoclay, PMMA, CAP and the nanocomposites. The X-ray diffractogram for the composites with varying CAP content is also shown...? value of 15.10 and another small hump at a 2? v...

L. Manjunath; R. R. N. Sailaja

2014-06-01T23:59:59.000Z

465

The Potential Supply of Cellulosic Biomass Energy Crops in Western Massachusetts.  

E-Print Network (OSTI)

??Most energy sources are derived from the sun, directly or indirectly. Stopping the increase of heat-trapping carbon dioxide in the atmosphere will likely require more (more)

Timmons, David Selkirk

2011-01-01T23:59:59.000Z

466

Cellulosic biomass could help meet Californias transportation fuel needs  

E-Print Network (OSTI)

However, because biomass unit energy costs are equivalent toan unfavorable energy balance preclude biomass ethanol fromDepartment of Energy for support of the Biomass Refining

Wyman, Charles E.; Yang, Bin

2009-01-01T23:59:59.000Z

467

Immunogold Labeling of Rosette Terminal Cellulose-Synthesizing Complexes in the Vascular Plant Vigna angularis  

Science Journals Connector (OSTI)

...particles were classified as either close enough to a rosette to have labeled it (20 nm) or too distant (>20 nm). A Kruskal-Wallis test was then performed on the numbers of particles that were close and far for the cells of each treatment. Nonsignificant...

Satoshi Kimura; Walairat Laosinchai; Takao Itoh; Xiaojiang Cui; C. Randal Linder; R. Malcolm Brown; Jr.

468

Transparent Slippery Surfaces Made with Sustainable Porous Cellulose Lauroyl Ester Films  

Science Journals Connector (OSTI)

(c) Transparency of various nanoporous CLE films (dotted lines) and corresponding slippery CLE films (solid lines). ... The critical magnetic field required to start the drop in motion was 0.06 T (measured at a 20 mm dropmagnet distance by a Teslameter, Projekt Elektronik GmbH, Berlin). ... (c) Magnetic glycerol drop (60 ?L) divided into two droplets by two magnets applied beside the drop. ...

Longquan Chen; Andreas Geissler; Elmar Bonaccurso; Kai Zhang

2014-04-22T23:59:59.000Z

469

Starch composites reinforced by bamboo cellulosic crystals Dagang Liu a,c  

E-Print Network (OSTI)

Agricultural Center, Baton Rouge, LA 70803, USA a r t i c l e i n f o Article history: Received 9 March 2009, competitiveness in price, and applicability to various industries (Yang et al., 2007; Lenz, 1993; Pandey et al energy or by incorporation of a plasticizing agent (e.g., water, amide, and/or polyols), starch can

470

Experimental study of the effect of sodium carbonate on the conversion of cellulose to oil  

E-Print Network (OSTI)

29 2. Runs at the same conditions for data reliability 3T LIST OP PIGUBES Piquze Paqe Schematid diagram of the Reactor. . . . . . . . . . . . . . . . 18 2 Tempe rature hehavioz of the reactor . . . . . . . . . . 23 3 Effect of Catalyst Loadinq... for leak testinq the reactor. Unsuccessful runs in the early stages vere caused hy the breakinq of the rupture disc and leakinq in the aqita tor sealinq system. The data from these runs vere d iscarded. A total of 35 runs were selected for analysis a...

Chu, Siu-Hung

2012-06-07T23:59:59.000Z

471

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

Industrial & Engineering Chemistry Research, 42, 4269- 4276.Stover. Industrial & Engineering Chemistry Research, 42,sawdust. Industrial & Engineering Chemistry Research, 40,

Qing, Qing

2010-01-01T23:59:59.000Z

472

PILOT PLANT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

Design and Economic Studies Hydrolysis Process A study is inCharles R. Wilke, "Process Design and Economic Studies ofCharles R. Wilke, "Process Design and Economic Studies of

Wilke, C.R.

2010-01-01T23:59:59.000Z

473

Department of Energy Delivers on R&D Targets around Cellulosic...  

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

cost of 2.05 per gallon. Biochemical Waterfall Chart of Minimum Ethanol Selling Price (in 2007 dollars per gallon). Major improvements included improving the following:...

474

Inhibition of ruminal cellulose fermentation by extracts of the perennial legume cicer milkvetch (Astragalus cicer).  

Science Journals Connector (OSTI)

...seeds was also grown in a greenhouse under supplemental lighting (14-h-day-10-h...respectively, to sheep. b G, greenhouse-grown in Madison, Wis...material grown in the field or greenhouse in 1991 indicated that the...

P J Weimer; R D Hatfield; D R Buxton

1993-02-01T23:59:59.000Z

475

Next-generation cellulosic ethanol technologies and their contribution to a sustainable Africa  

Science Journals Connector (OSTI)

...first two feedstocks (starchy biomass and sugarcane) is available and can be replicated, maize and other starchy biomass feedstocks have a very important role in food security in sub-Saharan Africa. To some extent, the use of these feedstocks...

2011-01-01T23:59:59.000Z

476

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

Design and Optimization of the Hydrolysis Reactor System.26Design and Optimization of the Hydrolysis Reactor System

Wilke, C.R.

2011-01-01T23:59:59.000Z

477

The Effects of Surfactant Pretreatment and Xylooligomers on Enzymatic Hydrolysis of Cellulose and Pretreated Biomass  

E-Print Network (OSTI)

M. , Wyman, C. , 2006. Energy returns on ethanol production.2006. Ethanol can contribute to energy and environmentalJ. , 2007. Ethanol for a sustainable energy future. Science,

Qing, Qing

2010-01-01T23:59:59.000Z

478

PROCESS DEVELOPMENT STUDIES OF THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

1 Energy Requirements for Ethanol Recovery Energy Required (The ethanol production reaction serves to provide energy forenergy cost of distillation in the case of ethanol-water. As

Wilke, Charles R.

2014-01-01T23:59:59.000Z

479

Cellulosic biomass could help meet Californias transportation fuel needs  

E-Print Network (OSTI)

al. 2006. Ethanol can contribute to energy and environmentalan unfavorable energy balance preclude biomass ethanol fromethanol and other organic liquid fuels can improve energy

Wyman, Charles E.; Yang, Bin

2009-01-01T23:59:59.000Z

480

PROCESS DEVELOPMENT STUDIES ON THE BIOCONVERSION OF CELLULOSE AND PRODUCTION OF ETHANOL  

E-Print Network (OSTI)

PER GALLON ANHYDROUS ETHANOL) ENERGY CONSUMPTION FARMINGmaterial. Table 17 ETHANOL SEPARATION ENERGY REQUIREMENTS *PRODUCTION OF ETHANOL FROM MOLASSES* (ENERGIES ARE IN BTU

Wilke, Charles R.

2011-01-01T23:59:59.000Z

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


481

Biomass Storage Options Influence Net Energy and Emissions of Cellulosic Ethanol  

Science Journals Connector (OSTI)

Incremental biomass losses during the harvest and storage of energy crops decrease the effective crop yield at ... expand the Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREETTM...) m...

Isaac Emery; Jennifer B. Dunn; Jeongwoo Han; Michael Wang

2014-10-01T23:59:59.000Z

482

The evolution of pellet size and shape during spheronisation of an extruded microcrystalline cellulose paste  

E-Print Network (OSTI)

powder and deionised water were mixed together using a planetary mixer 167 - 6 - fitted with a K-beater attachment (Kenwood Ltd, UK) at different speeds. After mixing the 168 paste was stored in a sealed plastic sample bag at room temperature... and higher at the edges, which is attributed to 456 the collisions affecting the surface regions. In the later stage dumb-bell in Figure 11(d) the 457 end caps have almost met at the centre. There are some air pockets at the waist where the 458 material...

Lau, C. L. S.; Yu, Q.; Lister, V. Y.; Rough, S. L.; Wilson, D. I.; Zhang, M.

2014-01-17T23:59:59.000Z

483

Interactions between MUR10/CesA7-Dependent Secondary Cellulose Biosynthesis and Primary  

E-Print Network (OSTI)

these processes are interrelated. The Arabidopsis (Arabidopsis thaliana) MUR10 gene is required for normal primary

Pauly, Markus

484

C3Bio.org - Tags: Cellulose Microfibril -C3Bio  

NLE Websites -- All DOE Office Websites (Extended Search)

1020 The effect of hydrochloric acid on the conversion of glucose to 5-hydroxymethylfurfural in AlCl3-H2OTHF biphasic medium 0.0 out of 5 stars 13 Sep 2013 |...

485

Studies on Cellulose Hydrolysis and Hemicellulose Monosaccharide Degradation in Concentrated Hydrochloric Acid .  

E-Print Network (OSTI)

??Given the volatile, generally high price of crude oil, as well as environmental concerns associated with its use as a fuel, development of alternative energy (more)

Li, Yan

2014-01-01T23:59:59.000Z

486

Consolidated Bio-Processing of Cellulosic Biomass for Efficient Biofuel Production Using Yeast Consortium  

E-Print Network (OSTI)

from microorganisms, TAPPI J.35: 228233. 19. Wen, F. , J.from microorganisms, TAPPI J.35: 228233. 22. Wen, F. , J.

Goyal, Garima

2011-01-01T23:59:59.000Z

487

Improvement in commercial scale dry mill corn ethanol production using controlled flow cavitation and cellulose hydrolysis  

Science Journals Connector (OSTI)

During commercial-scale dry-mill ethanol production from corn, as much as 6 ... In this study, two methods to improve ethanol production during commercial-scale corn ethanol production were tested that release an...

David A. Ramirez-Cadavid; Oleg Kozyuk

2014-09-01T23:59:59.000Z

488

Glycosylated linkers in multimodular lignocellulose-degrading enzymes dynamically bind to cellulose  

Science Journals Connector (OSTI)

...with TrCel7A, the CBM was placed on the hydrophobic...52, 53), and water was described with...CHARMM (55). The production MD simulations were...of the Family 1 CBM. The TrCel7A CBM...Limitations of gas-phase quantum mechanics...simulating liquid water . J Chem Phys 79 : 926...the glycosylated CBM-linker...

Christina M. Payne; Michael G. Resch; Liqun Chen; Michael F. Crowley; Michael E. Himmel; Larry E. Taylor II; Mats Sandgren; Jerry Sthlberg; Ingeborg Stals; Zhongping Tan; Gregg T. Beckham

2013-01-01T23:59:59.000Z

489

Surface-Based Assays for Enzyme Adsorption and Activity on Model Cellulose Films  

E-Print Network (OSTI)

Films Resolved by Neutron Reflectometry and Quartz CrystalFilms Resolved by Neutron Reflectometry and Quartz CrystalFilms Resolved by Neutron Reflectometry and Quartz Crystal

Maurer, Samuel Andrew

2012-01-01T23:59:59.000Z

490

Addition of a carbohydrate-binding module enhances cellulase penetration into cellulose substrates  

E-Print Network (OSTI)

Simmons BA, Kent MS: Neutron reflectometry and QCM-D studyfilms resolved by neutron reflectometry and quartz crystalWe then applied neutron reflectometry to determine the

2013-01-01T23:59:59.000Z

491

Changes in electrical and microstructural properties of microcrystalline cellulose as function  

E-Print Network (OSTI)

of carbonization temperature Yo-Rhin Rhim a , Dajie Zhang b , D. Howard Fairbrother c , Kevin A. Wepasnick c

Bodnar, Robert J.

492

Analytical description of the scattering of cellulose nanocrystals in tracheid wood cells  

Science Journals Connector (OSTI)

A model is described which allows the azimuthal X-ray diffraction pattern to be calculated for any hkl reflection of tracheid cells in any orientation. The same description can also be applied to fibers with an additional level of organization, e.g. twisted fibers.

Ogurreck, M.

2010-03-05T23:59:59.000Z

493

Artificial Cellulosomes and Arsenic Cleanup: From Single Cell Programming to Synthetic Yeast Consortium  

E-Print Network (OSTI)

for direct conversion of cellulose to ethanol. Enzyme Microbone-step conversion of cellulose to ethanol. Enzyme Microbof ethanol production (A) and cellulose hydrolysis (B) from

Tsai, Shen-Long

2011-01-01T23:59:59.000Z

494

Down-regulation of four putative arabinoxylan feruloyl transferase genes from family PF02458 reduces ester-linked ferulate content in rice cell walls  

E-Print Network (OSTI)

to ethanol is the inaccessibility of cellulose andto ethanol is the inaccessibility of the cellulose andthe cellulose ?bers, but add additional costs to the ethanol

Piston, Fernando; Uauy, Cristobal; Fu, Lianhai; Langston, James; Labavitch, John; Dubcovsky, Jorge

2010-01-01T23:59:59.000Z

495

A Low-Carbon Fuel Standard for California, Part 1: Technical Analysis  

E-Print Network (OSTI)

corn Ethanol - EU grain Ethanol - cellulose Fischer Tropschcosts for enzymatic cellulose-ethanol process with on-sitecosts for enzymatic cellulose-ethanol process with on-site

Farrell, Alexander; Sperling, Daniel

2007-01-01T23:59:59.000Z

496

Switchgrass is a promising, high-yielding crop for California biofuel  

E-Print Network (OSTI)

to produce ethanol from cellulose, the most abundantof lingo-cellulose conversion into ethanol, such as strongCellulose cannot be directly fermented to produce ethanol;

2011-01-01T23:59:59.000Z

497

Tracking Hemicellulose and Lignin Deconstruction During Hydrothermal Pretreatment of Biomass  

E-Print Network (OSTI)

increases ethanol yield from cellulose and switchgrasshigh ethanol yields from hemicellulose and cellulose in thecellulose degree of polymerization and its relevancy to cellulosic ethanol.

McKenzie, Heather Lorelei

2012-01-01T23:59:59.000Z

498

ENERGY & ENVIRONMENT DIVISION ANNUAL REPORT 1979  

E-Print Network (OSTI)

of Cellulose and Production of Ethanol," Lawrence Berkeleyof Cellulose and Production of Ethanol, Progress Reports: (cellulose to glu- cose, which is then converted to ethanol

Cairns, E.J.

2010-01-01T23:59:59.000Z

499

Prioritizing Climate Change Mitigation Alternatives: Comparing Transportation Technologies to Options in Other Sectors  

E-Print Network (OSTI)

2006; Wang, 2005). Cellulose-based ethanol is associatedemissions per gge for cellulose-based ethanol that displacescellolosic ethanol scenario Reference (AEO2007), cellulose-

Lutsey, Nicholas P.

2008-01-01T23:59:59.000Z

500

A Low-Carbon Fuel Standard for California Part 1: Technical Analysis  

E-Print Network (OSTI)

corn Ethanol - EU grain Ethanol - cellulose Fischer Tropschcosts for enzymatic cellulose-ethanol process with on-sitecosts for enzymatic cellulose-ethanol process with on-site

2007-01-01T23:59:59.000Z