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Production Of Ethanol From Starch By Co Immobilized Zymomonas Mobilis Glucoamylase In A Fluidized Bed Reactor
Download Production Of Ethanol From Starch By Co Immobilized Zymomonas Mobilis Glucoamylase In A Fluidized Bed Reactor full books in PDF, epub, and Kindle. Read online Production Of Ethanol From Starch By Co Immobilized Zymomonas Mobilis Glucoamylase In A Fluidized Bed Reactor ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Production of Ethanol from Starch by Co-immobilized Zymomonas Mobilis -- Glucoamylase in a Fluidized-bed Reactor by :
Download or read book Production of Ethanol from Starch by Co-immobilized Zymomonas Mobilis -- Glucoamylase in a Fluidized-bed Reactor written by and published by . This book was released on 1997 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of ethanol from starch was studied in a fluidized-bed reactor (FBR) using co-immobilized Zymomonas mobilis and glucoamylase. The FBR was a glass column of 2.54 cm in diameter and 120 cm in length. The Z. mobilis and glucoamylase were co-immobilized within small uniform beads (1.2 to 2.5 mm diameter) of [kappa]-carrageenan. The substrate for ethanol production was a soluble starch. Light steep water was used as the complex nutrient source. The experiments were performed at 35 C and pH range 4.0 to 5.5. The substrate concentrations ranged from 40 to 185 g/L and the feed rates from 10 to 37 mL/min. Under relaxed sterility conditions, the FBR was successfully operated for a period of 22 days, during which no contamination or structural failure of the biocatalyst beads was observed. Maximum volumetric productivity of 38 g ethanol/L-h, which was 76% of the theoretical value, was obtained. Typical ethanol volumetric productivity was in the range of 15 to 20 g/L-h. The average yield was 0.51 g ethanol/g substrate consumed, which was 90% of the theoretical yield. Very low levels of glucose were observed in the reactor, indicating that starch hydrolysis was the rate-limiting step.
Book Synopsis Ethanol Production from Dry-mill Corn Starch in a Fluidized-bed Bioreactor by :
Download or read book Ethanol Production from Dry-mill Corn Starch in a Fluidized-bed Bioreactor written by and published by . This book was released on 1998 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a high-rate process for the production of fuel ethanol from dry-mill corn starch using fluidized-bed bioreactor (FBR) technology is discussed. Experiments were conducted in a laboratory scale FBR using immobilized biocatalysts. Two ethanol production process designs were considered in this study. In the first design, simultaneous saccharification and fermentation was performed at 35 C using?-carageenan beads (1.5 mm to 1.5 mm in diameter) of co-immobilized glucoamylase and Zymomonas mobilis. For dextrin feed concentration of 100 g/L, the single-pass conversion ranged from 54% to 89%. Ethanol concentrations of 23 to 36 g/L were obtained at volumetric productivities of 9 to 15 g/L-h. No accumulation of glucose was observed, indicating that saccharification was the rate-limiting step. In the second design, saccharification and fermentation were carried out sequentially. In the first stage, solutions of 150 to 160 g/L dextrins were pumped through an immobilized glucoamylase packed column maintained at 55 C. Greater than 95% conversion was obtained at a residence time of 1 h, giving a product of 165 to 170 g glucose/L. In the second stage, these glucose solutions were fed to the FBR containing Z. mobilis immobilized in?-carageenan beads. At a residence time of 2 h, 94% conversion and ethanol concentration of 70 g/L was achieved, giving an overall productivity of 23 g/L-h.
Book Synopsis Advances in Carbohydrate Chemistry and Biochemistry by :
Download or read book Advances in Carbohydrate Chemistry and Biochemistry written by and published by Academic Press. This book was released on 2012-12-05 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its inception in 1945, this serial has provided critical and integrating articles written by research specialists that integrate industrial, analytical, and technological aspects of biochemistry, organic chemistry, and instrumentation methodology in the study of carbohydrates. The articles provide a definitive interpretation of the current status and future trends in carbohydrate chemistry and biochemistry. - Features contributions from leading authorities and industry experts - Informs and updates on all the latest developments in the field
Book Synopsis Biotechnology for Fuels and Chemicals by : Mark Finkelstein
Download or read book Biotechnology for Fuels and Chemicals written by Mark Finkelstein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt: MARK FINKELSTEIN National Renewable Energy Laboratory BRIAN H. DAVISON Oak Ridge National Laboratory The proceedings of the 19th symposium on Biotechnologyfor Fuels and Chemicals, held in Colorado Springs, Colorado, May 4-8, 1997, had over 200 attendees. This meeting continues to provide a unique forum for the presentation of new applications and recent research advances in the production of fuels and chemicals through biotech nology. The utilization of renewable resources, and in particular cellulosic biomass, has broad implications in today's world of green house gases, global warming, ozone layers, climate change, energy sustainability, and carbon emissions. It also has relevance to the chemical industry's continuing need to both lower current chemi cal production costs and produce novel chemicals. Biotechnology and bioprocessing are now making it possible to convert this bio mass to fuels and chemicals in a commercially attractive fashion. The 19th Symposium captures a wide range of technical topics from an academic, industrial, or government perspective. A vari ety of biomass feedstocks are discussed in Session 1, along with several updated and innovative pretreatment processing approaches. The ability to turn lignocellulosic materials into simple sugars offers great opportunities to generate cost-effective feed stocks to be used in biotechnological processes for the production of fuels and chemicals. Through the advent of genetic engineering, the development of a series of exciting new biocatalysts and microbes were presented in Session 2.
Book Synopsis Performance of Co-immobilized Yeast and Glucoamylase in a Fluidized Bed Reactor for Fuel Ethanol Production by :
Download or read book Performance of Co-immobilized Yeast and Glucoamylase in a Fluidized Bed Reactor for Fuel Ethanol Production written by and published by . This book was released on 1996 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of co-immobilized Saccharomyces cerevisiae and glucoamylase was evaluated in a fluidized bed reactor. Soluble starch and yeast extract were used as feed stocks. The biocatalyst performed well and demonstrated no significant loss of activity or physical integrity during 10 weeks of continuous operation. The reactor was easily operated and required no pH control. No operational problems were encountered from bacterial contaminants even though the reactor was operated under non-sterile conditions over the entire course of experiments. Productivities ranged between 25 to 44 g ethanol L−1 h−1. The experiments demonstrated that ethanol inhibition and bed loading had significant effects on bed performance.
Book Synopsis Twentieth Symposium on Biotechnology for Fuels and Chemicals by : Brian H. Davison
Download or read book Twentieth Symposium on Biotechnology for Fuels and Chemicals written by Brian H. Davison and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 853 pages. Available in PDF, EPUB and Kindle. Book excerpt: active industrial participation in the organizing committee. Recently, the conference has begun a regular informal industrial roundtable (Session 4). This has become very popular as it allows industrial participants to speak more openly. For a broader perspective, R. James Woolsey, Former Direc tor of Central Intelligence Agency, gave an after-dinner address on "Wagon Trains for the 21st Century: The Role for Biorefineries. " He urged the attendees of the importance of their efforts to develop renewable, benign processes for the United States and the world based on both security and prosperity reasons. These related to energy supply, support of domestic agriculture, global warming, and other issues. With the Twentieth Symposium, we continued the tradition of pro viding an informal, congenial atmosphere that our participants find condu cive to pursuing technical discussion of program topics. The technical program consisted of 35 oral presentations, a roundtable forum, two spe cial topic discussions, and a poster session of 133 posters. This year, tech nical topics included: Session 1: Feedstocks: New Supplies and Processing Session 2: Applied Biological Research Session 3: Bioprocessing Research Session 4: Emerging Opportunities for Industrial Chemicals Session 5: Bioprocess Evaluation and Confirmation Session 6: Enzymatic Processes and Enzyme Production Special topic discussions were held on "Defining the Future Separa tions Needs Derived from Bioprocessing" by Earl Beaver, Monsanto Com pany, St.
Book Synopsis Biotechnology for Fuels and Chemicals by : William S. Adney
Download or read book Biotechnology for Fuels and Chemicals written by William S. Adney and published by Springer Science & Business Media. This book was released on 2009-12-24 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Biotechnology for Fuels and Chemicals: The Twenty-Ninth Symposium, leading US and international researchers from academia, industry, and government exchange cutting-edge technical information and update current trends in the development and application of biotechnology for sustainable production of fuels and chemicals. This symposium emphasizes advances in biotechnology to produce high-volume, low-price products from renewable resources, while improving the environment. The major areas of interest include advanced feedstock production and processing, enzymatic and microbial biocatalysis, bioprocess research and development, opportunities in biorefineries, and commercialization of biobased products. International and domestic progress on producing liquid biofuels, especially ethanol and biodiesel, is highlighted, and related topics, including bioseparations and optimal integration of biochemical and thermochemical conversion technologies, are featured. Forward-looking and authoritative, Biotechnology for Fuels and Chemicals: The Twenty-NInth Symposium provides an illuminating overview of current research and development in the production of commodity fuels and chemicals from renewable biomass resources via biochemical and thermochemical routes.
Book Synopsis Bibliography, Production of Ethanol from Biomass by :
Download or read book Bibliography, Production of Ethanol from Biomass written by and published by . This book was released on 1984 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Popular History of London written by and published by . This book was released on 1866 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biopolymers in Pharmaceutical and Food Applications, 2 Volumes by : Sougata Jana
Download or read book Biopolymers in Pharmaceutical and Food Applications, 2 Volumes written by Sougata Jana and published by John Wiley & Sons. This book was released on 2024-10-01 with total page 983 pages. Available in PDF, EPUB and Kindle. Book excerpt: Revolutionize the search for sustainable industry with these biodegradable materials The search for biodegradable materials has become an increasingly essential component of the global response to climate change and the urgent need for more sustainable industrial processes. Biodegradable polymers, either synthetic or natural, have become an explosive research subject as their applications in food, medicinal, and pharmaceutical industries become more and more apparent. There is an urgent need for chemists and other professionals working in these industries to understand the range of available biopolymers and how to use them. Biopolymers in Pharmaceutical and Food Applications presents an overview of all currently-known food-safe polymers and their applications for food and pharmaceutical technology. Its grasp of recent sustainable trends in biopolymer production and distribution make it a one-stop shop for researchers and industry professionals looking to understand the future of sustainable food production, pharmaceutical and cosmetic applications. Comprehensive and accessible, it has never been timelier as a contribution to these key industries. Readers of the two volumes of Biopolymers in Pharmaceutical and Food Applications will also find: Treatment of biopolymers including collagen, chitosan, carrageenan, and more Detailed discussion of drug delivery systems incorporating plant- and animal-based biopolymers An editor with extensive research and teaching experience in biopolymer and pharmaceutical research Biopolymers in Pharmaceutical and Food Applications is ideal for polymer chemists, pharmaceutical chemists, food scientists, and any other researcher looking to work with biodegradable polymers.
Book Synopsis Production of Ethanol from Cassava Starch Hydrolysate by Immobilised Cells of 'Zymomonas Mobilis' by : Robson Geraldo Costa
Download or read book Production of Ethanol from Cassava Starch Hydrolysate by Immobilised Cells of 'Zymomonas Mobilis' written by Robson Geraldo Costa and published by . This book was released on 1983 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ethanol Production Using Zymomonas Mobilis in a Cross-linked Immobilized Cell Reactor by : Robert David Waldron
Download or read book Ethanol Production Using Zymomonas Mobilis in a Cross-linked Immobilized Cell Reactor written by Robert David Waldron and published by . This book was released on 1988 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Process Development and Modeling of Fluidized Bed Reactor with Co-immobilized Biocatalyst for Fuel Ethanol Production by : May Yongmei Sun
Download or read book Process Development and Modeling of Fluidized Bed Reactor with Co-immobilized Biocatalyst for Fuel Ethanol Production written by May Yongmei Sun and published by . This book was released on 1997 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Continuous Ethanol Production Using Immobilized-Cell/Enzyme Biocatalysts in Fluidized-Bed Bioreactor (FBR). by : NP. Nghiem
Download or read book Continuous Ethanol Production Using Immobilized-Cell/Enzyme Biocatalysts in Fluidized-Bed Bioreactor (FBR). written by NP. Nghiem and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The immobilized-cell fluidized-bed bioreactor (FBR) was developed at Oak Ridge National Laboratory (ORNL). Previous studies at ORNL using immobilized Zymomonas mobilis in FBR at both laboratory and demonstration scale (4-in-ID by 20-ft-tall) have shown that the system was more than 50 times as productive as industrial benchmarks (batch and fed-batch free cell fermentations for ethanol production from glucose). Economic analysis showed that a continuous process employing the FBR technology to produce ethanol from corn-derived glucose would offer savings of three to six cents per gallon of ethanol compared to a typical batch process. The application of the FBR technology for ethanol production was extended to investigate more complex feedstocks, which included starch and lignocellulosic-derived mixed sugars. Economic analysis and mathematical modeling of the reactor were included in the investigation. This report summarizes the results of these extensive studies.
Book Synopsis Biotechnology Research Abstracts by :
Download or read book Biotechnology Research Abstracts written by and published by . This book was released on 1989 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly. Classified listing of references to worldwide articles dealing with all aspects of biotechnology. Also includes books and conferences. Each entry gives bibliographic information, institutional address of author(s), and abstract. Author and subject index.
Book Synopsis Ethanol Production from Rice-Straw Hydrolysate Using Zymomonas Mobilis in a Continuous Fluidized-Bed Reactor (FBR). by :
Download or read book Ethanol Production from Rice-Straw Hydrolysate Using Zymomonas Mobilis in a Continuous Fluidized-Bed Reactor (FBR). written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice-straw hydrolysate obtained by the Arkenol's concentrated acid hydrolysis process was fermented to ethanol using a recombinant Zymomonas mobilis strain capable of utilizing both glucose and xylose in a continuous fluidized-bed reactor (FBR). The parameters studied included biocatalyst stability with and without antibiotic, feed composition, and retention time. Xylose utilization in the presence of tetracycline remained stable for at least 17 days. This was a significant improvement over the old strain, Z. mobilis CP4 (pZB5), which started to lose xylose utilization capability after seven days. In the absence of tetracycline, the xylose utilization rate started to decrease almost immediately. With tetracycline in the feed for the first six days, stability of xylose utilization was maintained for four days after the antibiotic was removed from the feed. The xylose utilization rate started to decrease on day 11. In the presence of tetracycline using the Arkenol's hydrolysate diluted to 48 g/L glucose and 13 g/L xylose at a retention time of 4.5 h, 95% xylose conversion and complete glucose conversion occurred. The ethanol concentration was 29 g/L, which gave a yield of 0.48 g/g sugar consumed or 94% of the theoretical yield. Using the Arkenol's hydrolysate diluted to 83 g/L glucose and 28 g/L xylose, 92% xylose conversion and complete glucose conversion were obtained. The ethanol concentration was 48 g/L, which gave a yield of 0.45 g/ g sugar consumed or 88% of the theoretical yield. Maximum productivity of 25.5 g/L-h was obtained at a retention time of 1.9 h. In this case, 84% xylose conversion was obtained.
