Готові списки джерел за темами / Cellulosic fuels

Добірка наукової літератури з теми "Cellulosic fuels"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Cellulosic fuels"

Chakraborty, Saikat, and Ashwin Gaikwad. "Production of Cellulosic Fuels." Proceedings of the National Academy of Sciences, India Section A: Physical Sciences 82, no. 1 (February 1, 2012): 59–69. http://dx.doi.org/10.1007/s40010-012-0007-y.

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Somerville, Chris. "The Development of Cellulosic Fuels." Biophysical Journal 98, no. 3 (January 2010): 210a. http://dx.doi.org/10.1016/j.bpj.2009.12.1127.

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Fan, Kang Qi, Yong Jun Tang, and Yang Fang. "Ultrasonic Vibration-Assisted Pelleting of Cellulosic Biomass: A Review." Advanced Materials Research 805-806 (September 2013): 151–55. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.151.

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Increasing concerns about reliable supplies and environmental consequences of petroleum-based fuels have made it important to develop sustainable green sources for liquid transportation fuels. One such source is cellulosic biomass. However, high costs associated with transportation and storage of low-density cellulosic biomass has hindered large-scale, cost-effective manufacturing of cellulosic biofuels. Ultrasonic vibration-assisted (UV-A) pelleting can increase biomass density, improve storability, and reduce transportation costs. This paper reviews the state of the art of this technique, covering the effects of different process parameters on pellet quality, pellet charring, pellet crack, and sugar yield. It can be concluded that pellet density increases with an increase in ultrasonic power and pelleting pressure, and with a decrease in biomass moisture content and particle size. However, large ultrasonic power may lead to the charring of cellulosic biomass, which adversely affects the conversion of cellulosic biomass to ethanol. In addition, some problems associated with UV-A pelletingof cellulosic biomass are proposed.

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Valenzuela-Ortega, Marcos, and Christopher E. French. "Engineering of industrially important microorganisms for assimilation of cellulosic biomass: towards consolidated bioprocessing." Biochemical Society Transactions 47, no. 6 (December 17, 2019): 1781–94. http://dx.doi.org/10.1042/bst20190293.

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Conversion of cellulosic biomass (non-edible plant material) to products such as chemical feedstocks and liquid fuels is a major goal of industrial biotechnology and an essential component of plans to move from an economy based on fossil carbon to one based on renewable materials. Many microorganisms can effectively degrade cellulosic biomass, but attempts to engineer this ability into industrially useful strains have met with limited success, suggesting an incomplete understanding of the process. The recent discovery and continuing study of enzymes involved in oxidative depolymerisation, as well as more detailed study of natural cellulose degradation processes, may offer a way forward.

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Xing, Yang, Lv Yang Liu, Zhao Qin Su, Li Wei Zhu, and Jian Xin Jiang. "Characteristics of Cellulose from Lespedeza stalks Steam Pretreated with Low Severity Steam and Post-Treatment by Alkaline Peroxide for Energy Production." Advanced Materials Research 578 (October 2012): 30–34. http://dx.doi.org/10.4028/www.scientific.net/amr.578.30.

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Lespedeza crytobotrya is a shrub species with properties of substantial biomass and widely distributes in the desert region of China. The cellulose separated from Lespedeza after pre-treatment can be enzymatic hydrolyzed into glucose for ethanol or other chemicals production, which are important renewable fuels or raw material for other material synthesis. Moreover it also can be used for cellulosic material production. So it is necessary to evaluate the cellulose of Lespedeza crytobotrya before its utilization. In this study four cellulosic fractions were isolated by pretreatment with low severity steam and post-treatment with alkaline peroxide. They were comparatively studied by sugar analysis and the average degree of polymerization. After alkaline peroxide post-treatment, the hemicelluloses in the cellulosic fractions were removed markedly. The treatment intensity had a profound effect on the average degree of polymerization, which was increased firstly and then decreased. A combination of low severity steam pretreatment and alkaline peroxide post-treatment is an effective method for Lespedeza stalks to obtain high glucose yield.

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Regalado, A. "Race for Cellulosic Fuels Spurs Brazilian Research Program." Science 327, no. 5968 (February 18, 2010): 928–29. http://dx.doi.org/10.1126/science.327.5968.928.

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Leroy, Valérie, Dominique Cancellieri, and Eric Leoni. "Chemical and thermal analysis of ligno-cellulosic fuels." Forest Ecology and Management 234 (November 2006): S125. http://dx.doi.org/10.1016/j.foreco.2006.08.166.

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Lange, Jean-Paul, Richard Price, Paul M Ayoub, Jurgen Louis, Leo Petrus, Lionel Clarke, and Hans Gosselink. "Valeric Biofuels: A Platform of Cellulosic Transportation Fuels." Angewandte Chemie International Edition 49, no. 26 (June 9, 2010): 4479–83. http://dx.doi.org/10.1002/anie.201000655.

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Lange, Jean-Paul, Richard Price, Paul M Ayoub, Jurgen Louis, Leo Petrus, Lionel Clarke, and Hans Gosselink. "Valeric Biofuels: A Platform of Cellulosic Transportation Fuels." Angewandte Chemie 122, no. 26 (June 9, 2010): 4581–85. http://dx.doi.org/10.1002/ange.201000655.

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Ko, Ja Kyong, and Sun-Mi Lee. "Advances in cellulosic conversion to fuels: engineering yeasts for cellulosic bioethanol and biodiesel production." Current Opinion in Biotechnology 50 (April 2018): 72–80. http://dx.doi.org/10.1016/j.copbio.2017.11.007.

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Дисертації з теми "Cellulosic fuels"

Rao, Swati Suryamohan. "Enzymatic hydrolysis of cellulosic fiber." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29639.

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Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2010.
Committee Chair: Banerjee Sujit; Committee Member: Deng Yulin; Committee Member: Haynes Danny. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Melsert, Ryan Mitchell. "Energy optimization of the production of cellulosic ethanol from southern pine." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26557.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2008.
Committee Chair: Dr. Sam Shelton; Committee Co-Chair: Dr. John Muzzy; Committee Member: Dr. Sheldon Jeter. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Choi, Youn-Sang. "Economic evaluation of U.S. ethanol production from ligno-cellulosic feedstocks /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9904837.

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Sanson, Joseph. "Hemicellulose and Cellulose Hydrolysis for Butanol Fuel Production." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1371218027.

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Zhang, Kuang. "Removal of the fermentation inhibitor, furfural, using activated carbon in cellulosic -ethanol production." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42887.

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Commercial activated carbon and newly polymer-derived carbon were utilized to selectively remove the model fermentation inhibitor, furfural, from water solution during bio-ethanol production. Morphology, pore structure and surface chemistry of the sorbents were characterized. The oxygen groups on the carbon surface were believed to have contributed to the decrease on the selectivity of activated carbon between furfural and sugars (Sugars are the valuable source of bio-ethanol production and should not be separated from solution). Oxidization of activated carbon by nitric acid generated more information which supports the above assumption. Different adsorption isotherm models and kinetic models were studied to fit commercial activated carbon and polymer-derived carbon individually. Bacterial cell growth, sugar consumption, and ethanol yield during the fermentation were investigated after inhibitors were selectively removed from the broth. The fermentation time was reduced from one week to one day after inhibitor removal. Different methods of sorbent regeneration were investigated, including thermal regeneration, pH adjustment and organic solvent stripping. Low ethanol-containing water solution appears to be the most cost-effective way to regenerate the spent sorbent in the industrial application. A sorption/desorption cycle was designed and the sorbents were regenerated in a fixed-bed column system using ethanol-containing liquid from fermentation. The results were stable after running 20 times of sorption/desorption cycle.

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Rismani-Yazdi, Hamid. "Bioconversion of cellulose into electrical energy in microbial fuel cells." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1211313869.

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Um, Byung-Hwan. "Optimization of ethanol production from concentrated substrate." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Dissertations/UM_BYUNG-HWAN_51.pdf.

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Pettegrew, Richard Dale. "Radiative Characteristics of a Thin Cellulosic Fuel at Discrete Levels of Pyrolysis: Angular, Spectral, and Thermal Dependencies." Case Western Reserve University School of Graduate Studies / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=case1133741679.

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CARDOSO, VANESSA M. "Aplicacao da radiacao de feixe de eletrons como pre-tratamento do bagaco de cana-de-acucar para hidrolise enzimatica da celulose." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11770.

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Made available in DSpace on 2014-10-09T12:55:37Z (GMT). No. of bitstreams: 0
Made available in DSpace on 2014-10-09T14:05:55Z (GMT). No. of bitstreams: 0
Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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Kirumira, Abdullah K. "Direct microbiological conversion of cellulosic biomass to fuel ethanol by a simultaneous saccharification/fermentation process using thermophilic anaerobic bacteria." Thesis, Kirumira, Abdullah K. (1989) Direct microbiological conversion of cellulosic biomass to fuel ethanol by a simultaneous saccharification/fermentation process using thermophilic anaerobic bacteria. PhD thesis, Murdoch University, 1989. https://researchrepository.murdoch.edu.au/id/eprint/52689/.

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Анотація:

The major objective of this thesis was to investigate and improve a direct microbial fermentation process, using the thermophilic anaerobic bacteria Clostridium thermocellum and Clostridium thermohvdrosulfuricum for the production of fuel ethanol in economically significant concentrations, from cellulose and hemicellulose contained in renewable biomass. Two model substrates representative of readily available lignocellulosic materials were selected for this study. These were wheat straw, which is the largest single biomass resource available in Australia, and waste paper, which is a major component of municipal solid wastes. At the onset of the research, proximate analyses of the composition of the two substrates were carried out to assess the potential yield of ethanol. Based on the total carbohydrate (hexose as well as pentose sugars) content of the materials, a theoretical potential yield of ethanol over 500 litres per dry tonne of biomass was estimated for both substrates. The feasibility of effecting biomass conversion to ethanol by direct fermentation of the substrates was then examined. Fermentation characteristics of 9 strains of the potent cellulolytic anaerobe, C. thermocelIum and 5 strains of the saccharolytic ethanoloaen. C. thermohvdrosulfuricum. were investigated on a range of sugars. Cellulose hydrolysis and fermentation by C. thermocellum strains were also studied with alpha-cellulose and the two model substrates. Variations in growth characteristics, extent and rates of substrate utilization, as well as in the stoichiometry of product formation were noted, not only between the two species, but also among the different strains. A stable coculture comprising the most potent strains of the two species could be established, and this culture efficiently fermented crystalline and native cellulosic substrates to produce ethanol at substantially higher yields than could be achieved with cultures of C. thermocellum alone. At 1% (w/v) concentration of wheat straw and newspaper, ethanol yield amounting to 70% of theoretical was obtained with the coculture, compared to 25% of theoretical yield exhibited bv C. thermocellum. The metabolic basis for the enhanced fermentation effectiveness of the coculture system has been discussed. The feasibility of attaining higher ethanol concentrations in the fermentations was investigated next by employing increased substrate concentrations in batch as well as fed-batch mode of operation. The bioconversion efficiency was observed to systematically decrease with increased substrate concentration, and a limiting ethanol concentration for the cocultures appeared to be around 10-12g/l. At the highest substrate loadings used, the yield of ethanol was only 25% of theoretical. Lignaceous components of biomass and inhibition of bacterial growth by products of fermentation, as well as the physical nature of the substrates were determined to be the major factors limiting the effectiveness of the fermentation. The above observations led to further studies involving a comparative evaluation of range of substrate delignification treatments and a systematic program of strain improvement with respect to increased ethanol tolerance and end product selectivity. A selective solvent extraction procedure using an alkaline ethanol solvent yielded the best delignification performance of all the alternatives examined. Up to 70% lignin removal with a loss of less than 10% of the available carbohydrates was obtained with this method. Coculture fermentation of wheatstraw and newspaper pretreated by this procedure showed a four-fold increase in the maximum volumetric degradation rate as well as nearly 100% increase in the overall extent of substrate utilization, compared to untreated material. Studies aimed at improving the fermentation efficacy were undertaken on both species of organisms. Improved ethanol tolerance was achieved through progressive adaptation of parent strains to higher ethanol concentrations in the growth medium. The strains isolated in this work however tended to have a significantly higher yield of the acid products concomitant with their enhanced ethanol productivity. A separate program of mutation and selective isolation of low acid producing cultures eventually resulted in strains which in coculture, fed batch fermentations were able to produce ethanol at concentrations of up to 30g/l at a net ethanol yield exceeding 60% of theoretical, when grown on pretreated wheat straw and newspaper. A relatively reduced yield of ethanol however, was noted on real biomass compared to similar fermentations using pure substrates. This coincided with increased production of acetate with the crude substrates. An analysis of fermentation kinetics for the various experiments revealed that the ethanol/acetate ratio for deregulated strains of C. thermocellum and C. thermohvdrosulfuricum was strongly dependent on the specific growth rate the organisms achieve during fermentation, which, in turn is determined by the substrate hydrolysis and/or consumption rates. The implications of this to future process improvement studies has been briefly discussed.

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Книги з теми "Cellulosic fuels"

The next generation of biofuels: Cellulosic ethanol and the 2007 farm bill : hearing before the Subcommittee on Energy, Science, and Technology of the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Tenth Congress, first session, April 4, 2007. Washington: U.S. G.P.O., 2007.

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Renewable energy with a focus on cellulosic ethanol and biodiesel: Hearing before the Committee on Appropriations, United States Senate, One Hundred Ninth Congress, second session, special hearing, August 26, 2006, Sidney, Montana. Washington: U.S. G.P.O., 2006.

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Amarasekara, Ananda S. Handbook of cellulosic ethanol. Beverly, MA: Scrivener Publishing, 2014.

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Buckeridge, Marcos Silveira. Routes to cellulosic ethanol. New York, NY: Springer, 2011.

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Shaffer, Daniel. Liquid fuel and chemicals from renewable cellulosic biomass. Helena, Mont. (1520 E. 6th Ave., Helena 59620): The Program, 1985.

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Daigaku, Mie. Sōbunri henkanhō o mochiita mokushitsu baiomasu no zenryō katsuyōgata tei-kosuto etanōru seizō gijutsu jisshō kenkyū, seika hokokusho. [Tsu-shi]: Kokuritsu Daigaku Hōjin Mie Daigaku, 2012.

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California Energy Commission. Public Interest Energy Research. Physical energy accounting in California : a case study of cellulosic ethanol production: PIER interim project report. [Sacramento, Calif.]: California Energy Commission, 2009.

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Goettemoeller, Jeffrey. Sustainable ethanol: Biofuels, biorefineries, cellulosic biomass, flex-fuel vehicles, and sustainable farming for energy independence. Maryville, Mo: Prairie Oak Pub., 2007.

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Sun, Runcang. Cereal straw as a resource for sustainable biomaterials and biofuels: Chemistry, extractives, lignins, hemicelluloses and cellulose. Amsterdam: Elsevier, 2010.

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Breaking the biological barriers to cellulosic ethanol: A joint research agenda . [Washington, D.C: U.S. Dept. of Energy, 2006.

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Частини книг з теми "Cellulosic fuels"

Lawford, Hugh G., and Joyce D. Rousseau. "Cellulosic Fuel Ethanol." In Biotechnology for Fuels and Chemicals, 457–69. Totowa, NJ: Humana Press, 2003. http://dx.doi.org/10.1007/978-1-4612-0057-4_38.

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Dobbelaere, Sofie, Tom Anthonis, and Wim Soetaert. "Conversion Technologies for the Production of Liquid Fuels and Biochemicals." In Cellulosic Energy Cropping Systems, 15–30. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118676332.ch2.

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Friedemann, Alice J. "The Problems with Cellulosic Ethanol Could Drive You to Drink." In Life after Fossil Fuels, 157–63. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70335-6_27.

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Fockink, Douglas H., Mateus B. Urio, Luana M. Chiarello, Jorge H. Sánchez, and Luiz Pereira Ramos. "Principles and Challenges Involved in the Enzymatic Hydrolysis of Cellulosic Materials at High Total Solids." In Green Fuels Technology, 147–73. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30205-8_7.

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Mais, Ursula, Ali R. Esteghlalian, John N. Saddler, and Shawn D. Mansfield. "Enhancing the Enzymatic Hydrolysis of Cellulosic Materials Using Simultaneous Ball Milling." In Biotechnology for Fuels and Chemicals, 815–32. Totowa, NJ: Humana Press, 2002. http://dx.doi.org/10.1007/978-1-4612-0119-9_66.

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Chen, Rongfu, and Y. Y. Lee. "Membrane-Mediated Extractive Fermentation for Lactic Acid Production from Cellulosic Biomass." In Biotechnology for Fuels and Chemicals, 435–48. Totowa, NJ: Humana Press, 1997. http://dx.doi.org/10.1007/978-1-4612-2312-2_38.

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Wan, Yinkun, and Thomas R. Hanley. "Flow Field in a Shrinking-Bed Reactor for Pretreatment of Cellulosic Biomass." In Biotechnology for Fuels and Chemicals, 593–602. Totowa, NJ: Humana Press, 2003. http://dx.doi.org/10.1007/978-1-4612-0057-4_49.

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de Lima, Danilo Ribeiro, Marcos Henrique Luciano Silveira, Luis Del Rio, and Luiz Pereira Ramos. "Pretreatment Processes for Cellulosic Ethanol Production: Processes Integration and Modeling for the Utilization of Lignocellulosics Such as Sugarcane Straw." In Green Fuels Technology, 107–31. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30205-8_5.

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Fontana, José D., Cassandra G. Joerke, Madalena Baron, Marcelo Maraschin, Antonio G. Ferreira, Iris Torriani, A. M. Souza, Marisa B. Soares, Milene A. Fontana, and Manoel F. Guimaraes. "Acetobacter Cellulosic Biofilms Search for New Modulators of Cellulogenesis and Native Membrane Treatments." In Biotechnology for Fuels and Chemicals, 327–38. Totowa, NJ: Humana Press, 1997. http://dx.doi.org/10.1007/978-1-4612-2312-2_28.

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Lynd, Lee, and Mark Laser. "Cellulosic Biofuels: Importance, Recalcitrance, and Pretreatment." In Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals, 17–21. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9780470975831.ch2.

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Тези доповідей конференцій з теми "Cellulosic fuels"

Zhang, P. F., and Z. J. Pei. "Effects of Ultrasonic Treatments on Cellulose in Cellulosic Biofuel Manufacturing: A Literature Review." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34180.

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Анотація:

Cellulosic biofuels are one type of renewable energy, and have been proposed to replace traditional liquid transportation fuels. Cellulosic biomass is the feedstocks in cellulosic biofuel manufacturing. Cellulose accounts for approximately 30% of the total weight in cellulosic biomass. Glucose, one type of monosaccharide convertible to ethanol, can be obtained by hydrolyzing the polymeric structure of cellulose. Currently enzymatic methods are the most common for the hydrolysis of cellulose. However, the low efficiency of enzymatic hydrolysis increases production cost and hinders the large-scale manufacturing of cellulosic biofuels. Ultrasonic treatments applied on cellulosic biomass were found to improve the efficiency of hydrolysis and subsequently increase the sugar yield of hydrolysis. To understand the effects of ultrasonics on cellulose, investigations have been conducted on the effects on cellulose characteristics caused by ultrasonic treatments during hydrolysis. This paper reviews the effects of ultrasonic treatments on cellulose during hydrolysis in terms of sugar yield and some characteristics of cellulose, such as accessibility, crystallinity, degree of polymerization, and morphological structure.

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Zhang, Meng, Xiaoxu Song, Z. J. Pei, and D. H. Wang. "Effects of Mechanical Comminution on Enzymatic Conversion of Cellulosic Biomass in Biofuel Manufacturing: A Review." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34082.

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It is imperative to develop alternative fuels to replace current petroleum-based liquid transportation fuels. Biofuels produced from cellulosic biomass (forest products and residues, agricultural residues, and dedicated energy crops) is one such alternative. Manufacturing biofuels from cellulosic biomass requires reduction of the material size using mechanical comminution methods. This paper reviews these mechanical comminution methods. It presents their effects on biomass particle size, cellulose crystallinity, and sugar yield. It also discusses the characteristics of each method and future research directions.

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Morrison, P., K. Street, R. Pettegrew, N. Piltch, and J. T'ien. "Spectrally resolved radiative properties of thin cellulosic fuels." In 40th AIAA Aerospace Sciences Meeting & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-919.

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Zhang, Qi, P. F. Zhang, Timothy Deines, Z. J. Pei, Donghai Wang, Xiaorong Wu, and Graham Pritchett. "Ultrasonic Vibration-Assisted Pelleting of Sorghum Stalks: Effects of Pressure and Ultrasonic Power." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34173.

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Cellulosic biofuels can be used to replace traditional liquid transportation fuels. Cellulosic biomass is feedstock in manufacturing of cellulosic biofuels. However, the low density of cellulosic biomass feedstock hinders large-scale and cost-effective manufacturing of cellulosic biofuels. Another bottleneck factor in manufacturing of cellulosic biofuels is the low efficiency of the enzymatic hydrolysis of cellulosic biomass materials resulting in a low sugar yield. Ultrasonic vibration-assisted (UV-A) pelleting can increase the density of cellulosic biomass feedstocks via combined effects of mechanical compression and ultrasonic vibration of the tool on the cellulosic biomass. Meanwhile ultrasonic vibration may act as a beneficial pretreatment for enzymatic hydrolysis, which can possibly increase the efficiency of hydrolysis and obtain a higher sugar yield. The pressure and the ultrasonic power are important parameters in UV-A pelleting. Their effects on pellet quality (density, durability, and stability) and sugar yield (after hydrolysis) are experimentally investigated.

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Zhang, P. F., and Z. J. Pei. "Cost Estimates of Cellulosic Ethanol Manufacturing: A Literature Review." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50136.

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Cellulosic ethanol is one type of renewable energy, and can be used to replace petroleum based transportation fuels. The technologies of converting cellulosic biomass into ethanol are relatively mature. However, the manufacturing costs of cellulosic ethanol are too high to be competitive. Economic analyses of cellulosic ethanol manufacturing have appeared regularly to estimate manufacturing costs of cellulosic ethanol. But the estimated manufacturing costs of cellulosic ethanol have a wide range due to differences in used assumptions. It is very difficult to judge which one is most reliable among the markedly different cost estimates in the literature. This paper reviews the literature on cost estimates in manufacturing of cellulosic ethanol. Cost estimates of each manufacturing process are summarized. Cost components and their data sources are discussed. This review provides a foundation to develop a comprehensive cost model for cellulosic ethanol manufacturing.

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Zhang, Meng, Xiaoxu Song, Pengfei Zhang, and Z. J. Pei. "Dilute Acid Pretreatment and Enzymatic Hydrolysis of Woody Biomass for Biofuel Manufacturing: Effects of Particle Size on Sugar Conversion." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1050.

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Biofuels derived from cellulosic biomass offer a promising alternative to petroleum-based liquid transportation fuels. Cellulosic biomass can be converted into biofuels through biochemical pathway. This pathway consists of two major conversions: sugar conversion and ethanol conversion. Sugar yield in sugar conversion is critical to the cost effectiveness of biofuel manufacturing, because it is approximately proportional to the ethanol biofuel yield. Cellulosic biomass sugar conversion consists of pretreatment and enzymatic hydrolysis. Biomass particle size is an important factor affecting sugar yield. The literature contains many studies investigating the relationship between particle size and sugar yield. Many studies focused only on the sugar yield in enzymatic hydrolysis, and failed to take into account the biomass weight loss during pretreatment. This weight loss results in a loss of the amount of potential sugar (cellulose), which continues going into enzymatic hydrolysis. Without considering this loss, cellulosic biomass with a higher enzymatic hydrolysis sugar yield may end up with a lower total sugar yield through sugar conversion. The present study aims to address this issue by investigating the effects of biomass particle size using total sugar yield, a parameter considering both the biomass weight loss in pretreatment and the sugar yield in enzymatic hydrolysis.

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Zhang, Qi, Pengfei Zhang, Z. J. Pei, and Linda Pei. "Effects of Treatments on Cellulosic Biomass Structure in Ethanol Manufacturing: A Literature Review." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64304.

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Ethanol made from cellulosic biomass is an alternative to petroleum-based liquid transportation fuels. Enzymatic hydrolysis uses enzymes to convert cellulosic biomass into sugars that are fermented into ethanol. In order to increase sugar yield, various treatments (such as biomass size reduction and pretreatment) are applied to cellulosic biomass before enzymatic hydrolysis. These treatments will alter structure parameters of cellulosic biomass, such as crystallinity index, degree of polymerization, particle size, pore volume, and specific surface area. There are currently no review papers on these structure parameters of cellulosic biomass in ethanol manufacturing. This paper reviews experimental investigations in the literature about effects of various treatments on the structure parameters of cellulosic biomass.

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Zhang, Pengfei, Timothy Deines, Daniel Nottingham, Z. J. Pei, Donghai Wang, and Xiaorong Wu. "Ultrasonic Vibration-Assisted Pelleting of Biomass: A Designed Experimental Investigation on Pellet Quality and Sugar Yield." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34179.

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Increasing demands and concerns for the reliable supply of liquid transportation fuels make it important to find alternative sources to petroleum based fuels. One such alternative is cellulosic biofuels. However, several technical barriers have hindered large-scale, cost-effective manufacturing of cellulosic biofuels, such as the low density of cellulosic feedstocks (causing high transportation and storage costs) and the low efficiency of enzymatic hydrolysis process (causing longer processing time and low sugar yield). Ultrasonic vibration-assisted (UV-A) pelleting can increase the density of cellulosic materials by compressing them into pellets. UV-A pelleting can also increase the sugar yield of cellulosic biomass materials in hydrolysis. At present, the effects of process variables in UV-A pelleting on pellet quality (density, durability, and stability) and sugar yield have not been adequately investigated. This paper reports an experimental investigation on UV-A pelleting of wheat straw. A 24 factorial design is employed to evaluate the effects of process variables (moisture content, particle size, pelleting pressure, and ultrasonic power) on output variables (pellet density, durability, stability, and sugar yield).

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Zhang, Qi, Pengfei Zhang, Shing Chang, Z. J. Pei, and Donghai Wang. "Optimization of Input Variables in Ultrasonic Vibration-Assisted Pelleting of Cellulosic Biomass Using Multiple Response Surface Methodology." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1044.

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Cellulosic ethanol is an attractive alternative to petroleum-based liquid transportation fuels. However, low density of cellulosic biomass (the feedstock for cellulosic ethanol) causes high costs in biomass logistics and hinders large-scale and cost-effective manufacturing of cellulosic ethanol. Ultrasonic vibration-assisted (UV-A) pelleting can significantly increase the density of cellulosic biomass by compressing raw cellulosic biomass into pellets. Pellet density and durability are two important physical properties of a pellet. In this study, a multiple response surface methodology was employed to optimize the input variables (pelleting time, pressure, and ultrasonic power) in UV-A pelleting of sorghum stalks for simultaneously maximized pellet density and durability. Second-order polynomial models were used to fit the experimental results. Main and interaction effects of the input variables on pellet density and durability were also investigated.

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Zhang, Qi, Pengfei Zhang, Z. J. Pei, Jonathan Wilson, Leland McKinney, and Graham Pritchett. "An Experimental Comparison of Two Pelleting Methods for Cellulosic Ethanol Manufacturing." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50215.

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Ethanol produced from cellulosic biomass is an alternative to petroleum-based transportation fuels. However, manufacturing costs of cellulosic ethanol are too high to be competitive. Low density of cellulosic feedstocks increases their handling and transportation costs, contributing to high overall costs of cellulosic ethanol manufacturing. Pelleting can increase density of cellulosic feedstocks, reduce transportation and storage costs, and make cellulosic ethanol production more competitive. UV-A (ultrasonic vibration-assisted) pelleting is a new pelleting method (available only in lab scale now). Preliminary research showed that UV-A pelleting could significantly increase pellet density and pellet durability but it has never been compared with other pelleting methods (e.g., using an extruder, a briquetting press or a ring-die pelleting). The objectives of this research are to compare UV-A pelleting with ring-die pelleting in terms of pellet density, pellet durability, energy consumptions of pelleting. The results will be useful to find a better pelleting method for cellulosic ethanol manufacturing.

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Звіти організацій з теми "Cellulosic fuels"

Pitts, William M. Ignition of cellulosic fuels by heated and radiative surfaces. Gaithersburg, MD: National Institute of Standards and Technology, 2007. http://dx.doi.org/10.6028/nist.tn.1481.

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Fornetti, Micheal, and Douglas Freeman. Technical Report Cellulosic Based Black Liquor Gasification and Fuels Plant Final Technical Report. Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1163294.

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Roberts, Michael, Terry Marker, Martin Linck, Steve Schmidt, James Winfield, David Shonnard, and Jinquig Fan. Catalytic Conversion of Cellulosic Biomass or Algal Biomass plus Methane to Drop in Hydrocarbon Fuels and Chemicals. Office of Scientific and Technical Information (OSTI), April 2018. http://dx.doi.org/10.2172/1433512.

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John Frey. MN Center for Renewable Energy: Cellulosic Ethanol, Optimization of Bio-fuels in Internal Combustion Engines, & Course Development for Technicians in These Areas. Office of Scientific and Technical Information (OSTI), February 2009. http://dx.doi.org/10.2172/951777.

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Suzuki, Kohei, Akira Iijima, Hideo Shoji, and Koji Yoshida. An Application of Cellulosic Liquefaction Fuel for Diesel Engine - Improvement of Fuel Property by Cellulosic Liquefaction with Plastics -. Warrendale, PA: SAE International, October 2013. http://dx.doi.org/10.4271/2013-32-9174.

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Collett, James R., Pimphan A. Meyer, and Susanne B. Jones. Preliminary Economics for Hydrocarbon Fuel Production from Cellulosic Sugars. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1133232.

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Dale, M. C., M. Okos, and N. Burgos. The production of fuels and chemicals from food processing wastes & cellulosics. Final research report. Office of Scientific and Technical Information (OSTI), June 1997. http://dx.doi.org/10.2172/607513.

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J. Michael Robinson. A mild, chemical conversion of cellulose to hexane and other hydrocarbon fuels. Final report. Office of Scientific and Technical Information (OSTI), March 1999. http://dx.doi.org/10.2172/770569.

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Cortright, Randy. Cellulosic Biomass Sugars to Advantaged Jet Fuel – Catalytic Conversion of Corn Stover to Energy Dense, Low Freeze Point Paraffins and Naphthenes. Office of Scientific and Technical Information (OSTI), July 2015. http://dx.doi.org/10.2172/1346572.

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Elander, Rick. Cellulosic Biomass Sugars to Advantage Jet Fuel: Catalytic Conversion of Corn Stover to Energy Dense, Low Freeze Point Paraffins and Naphthenes: Cooperative Research and Development Final Report, CRADA Number CRD-12-462. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1215357.

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