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A Low Energy Continuous Reactor Separator For Ethanol From Starch Whey Permeate Permeate Mother Liquor Molasses Or Cullulosics
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Book Synopsis A Low-energy Continuous Reactor-separator for Ethanol from Starch, Whey Permeate, Permeate Mother Liquor, Molasses Or Cullulosics by : M. C. Dale
Download or read book A Low-energy Continuous Reactor-separator for Ethanol from Starch, Whey Permeate, Permeate Mother Liquor, Molasses Or Cullulosics written by M. C. Dale and published by . This book was released on 1998 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Low-energy Continuous Reactor-separator for Ethanol from Starch, Whey Permeate, Permeate Mother Liquor, Molasses Or Cellulosics. Project Final Report, April 1, 1994--February 28, 1997 by :
Download or read book A Low-energy Continuous Reactor-separator for Ethanol from Starch, Whey Permeate, Permeate Mother Liquor, Molasses Or Cellulosics. Project Final Report, April 1, 1994--February 28, 1997 written by and published by . This book was released on 1997 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this project, a novel bio-reactor technology in which reaction is coupled with product separation was developed to pilot/demonstration scale. Combining reaction with separation during a fermentation allows the fermentation of highly concentrated feeds and allows the fermentation of streams with high levels of salts/non-fermentable inhibitors. Simultaneous saccharification and fermentation of polysaccharides such as starch and cellulose can also be combined with ethanol separation in the Continuous Stirred Reactor Separator (CSRS). Application of the bio-reactor to various substrates was investigated on a lab scale with fermentation of raw starch, cane molasses, xylose, whey permeate and permeate mother liquor. Flocculating yeast strains for high density sucrose/glucose fermentation were selected and adapted to form fast settling pellets. A strain of K marxianus capable of fermenting high salt permeate mother liquor was also selected and adapted. A low energy solvent ethanol recovery system was developed for ethanol recovery from the vapors leaving the reactor/separator. This Solvent Absorption/Extractive Distillation (SAED) process gives a low energy method for purifying the ethanol to an anhydrous product. The amount of energy needed to recover an anhydrous ethanol product from a CSRS stage running at 8% ethanol was calculated to be under 8,000 BTU/gallon. This process may also have further application in VOC (volatile organic carbon compounds) removal from air streams. During this project, a 24,000 Liter CSRS was designed, fabricated, installed, and operated at a small batch ethanol plant (Permeate Refining Inc) in NE Iowa. The reactor was operated on a semi-continuous basis over a period of 18 months. A Solvent Absorption Extractive Distillation (SAED) system was also recently completed and installed at the Permeate Refining Inc. site for ethanol recovery/dehydration.
Book Synopsis A Low Energy Continuous Reactor Separator for the Production of Ethanol from Starch, Molasses and Cellulose. Fourth Quarterly Report to the Energy Related Inventions Program, January 16--March 15, 1995 by :
Download or read book A Low Energy Continuous Reactor Separator for the Production of Ethanol from Starch, Molasses and Cellulose. Fourth Quarterly Report to the Energy Related Inventions Program, January 16--March 15, 1995 written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress for the previous quarter is reported concerning design and development of a 24,000 liter continuous stirred reactor-separator and a 50 liter pilot plant.
Book Synopsis A Laboratory and Pilot Plant Scaled Continuous Stirred Reactor Separator for the Production of Ethanol from Sugars, Corn Grits by :
Download or read book A Laboratory and Pilot Plant Scaled Continuous Stirred Reactor Separator for the Production of Ethanol from Sugars, Corn Grits written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: An improved bio-reactor has been developed to allow the high speed, continues, low energy conversion of various substrates to ethanol. The Continuous Stirred Reactor Separator (CSRS) incorporates gas stripping of the ethanol using a recalculating gas stream between cascading stirred reactors in series. We have operated a 4 liter lab scale unit, and built and operated a 24,000 liter pilot scale version of the bioreactor. High rates of fermentation are maintained in the reactor stages using a highly flocculent yeast strain. Ethanol is recovered from the stripping gas using a hydrophobic solvent absorber (isothermal), after which the gas is returned to the bioreactor. Ethanol can then be removed from the solvent to recover a highly concentrated ethanol product. We have applied the lab scale CSRS to sugars (glucose/sucrose), molasses, and raw starch with simultaneous saccharification and fermentation of the starch granules (SSF). The pilot scale CSRS has been operated as a cascade reactor using dextrins as a feed. Operating data from both the lab and pilot scale CSRS are presented. Details of how the system might be applied to cellulosics, with some preliminary data are also given.
Book Synopsis A Pilot Plant Scale Reactor/separator for Ethanol from Cellulosics. ERIP/DOE Quarterly Report No. 3 and 4 by :
Download or read book A Pilot Plant Scale Reactor/separator for Ethanol from Cellulosics. ERIP/DOE Quarterly Report No. 3 and 4 written by and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project is to develop and demonstrate a continuous, low energy process for the conversion of cellulosics to ethanol. This process involves a pretreatment step followed by enzymatic release of sugars and the consecutive simultaneous saccharification/fermentation (SSF) of cellulose (glucans) followed by hemi-cellulose (pentosans) in a multi-stage continuous stirred reactor separator (CSRS). During quarters 3 and 4, we have completed a literature survey on cellulase production, activated one strain of Trichoderma reesei. We continued developing our proprietary Steep Delignification (SD) process for biomass pretreatment. Some problems with fermentations were traces to bad cellulase enzyme. Using commercial cellulase enzymes from Solvay & Genecor, SSF experiments with wheat straw showed 41 g/L ethanol and free xylose of 20 g/L after completion of the fermentation. From corn stover, we noted 36 g/L ethanol production from the cellulose fraction of the biomass, and 4 g/L free xylose at the completion of the SSF. We also began some work with paper mill sludge as a cellulose source, and in some preliminary experiments obtained 23 g/L ethanol during SSF of the sludge. During year 2, a 130 L process scale unit will be operated to demonstrate the process using straw or cornstalks. Co-sponsors of this project include the Indiana Biomass Grants Program, Bio-Process Innovation.
Book Synopsis Design and Construction of a 7,500 Liter Immobilized Cell Reactor-separator for Ethanol Production from Whey by :
Download or read book Design and Construction of a 7,500 Liter Immobilized Cell Reactor-separator for Ethanol Production from Whey written by and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 7,500 liter reactor/separator has been constructed for the production of ethanol from concentrated whey permeate. This unit is sited in Hopkinton IA, across the street from a whey generating cheese plant A two phase construction project consisting of (1) building and testing a reactor/separator with a solvent absorber in a single unified housing, and (2) building and testing an extractive distillation/product stripper for the recovery of anhydrous ethanol is under way. The design capacity of this unit is 250,000 gal/yr of anhydrous product. Design and construction details of the reactor/absorber separator are given, and design parameters for the extractive distillation system are described.
Book Synopsis A Pilot Plant Scale Reactor/Separator for Ethanol from Cellulosics. ERIP/DOE Quarterly Reports 7, 8 and Final Report by :
Download or read book A Pilot Plant Scale Reactor/Separator for Ethanol from Cellulosics. ERIP/DOE Quarterly Reports 7, 8 and Final Report written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to develop and demonstrate a continuous low energy process for the conversion of cellulosics to ethanol. BPI's process involves a proprietary low temperature pretreatment step which allows recycle of the pretreatment chemicals and recovery of a lignin stream. The pretreated biomass is then converted to glucans and xylans enzymatically and these sugars simultaneously fermented to ethanol (SSF) in BPI's Continuous Stirred Reactor Separator (CSRS). The CSRS is a multi stage bio-reactor where the glucans are first converted to ethanol using a high temperature tolerant yeast stran, followed by xylan SSF on the lower stages using a second xylose fermenting yeast strain. Ethanol is simultaneously removed from the bio-reactor stages, speeding the fermentation, and allowing the complete utilization of the biomass.
Book Synopsis A Pilot Plant Scale Reactor/separator for Ethanol from Cellulosics. Quarterly Report No. 1 & 2, October 1, 1997--March 30, 1998 by :
Download or read book A Pilot Plant Scale Reactor/separator for Ethanol from Cellulosics. Quarterly Report No. 1 & 2, October 1, 1997--March 30, 1998 written by and published by . This book was released on 1998 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic objective of this project is to develop and demonstrate a continuous, low energy process for the conversion of cellulosics to ethanol. This process involves a pretreatment step followed by enzymatic release of sugars and the consecutive saccharification/fermentation of cellulose (glucans) followed by hemi-cellulose (glucans) in a multi-stage continuous stirred reactor separator (CSRS). During year 1, pretreatment and bench scale fermentation trials will be performed to demonstrate and develop the process, and during year 2, a 130 L or larger process scale unit will be operated to demonstrate the process using straw or cornstalks. Co-sponsors of this project include the Indiana Biomass Grants Program, Bio-Process Innovation, Xylan Inc as a possible provider of pretreated biomass.
Book Synopsis The Production of Chemicals from Food Processing Wastes Using a Novel Fermenter Separator. Annual Progress Report, January 1993--March 1994 by :
Download or read book The Production of Chemicals from Food Processing Wastes Using a Novel Fermenter Separator. Annual Progress Report, January 1993--March 1994 written by and published by . This book was released on 1994 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic objective of this project is to convert waste streams from the food processing industry to usable fuels and chemicals using novel bioreactors. These bioreactors should allow economical utilization of waste (whey, waste sugars, waste starch, bottling wastes, candy wastes, molasses, and cellulosic wastes) by the production of ethanol, acetone/butanol, organic acids (acetic, lactic, and gluconic), yeast diacetyl flavor, and antifungal compounds. Continuous processes incorporating various processing improvements such as simultaneous product separation and immobilized cells are being developed to allow commercial scale utilization of waste stream. The production of ethanol by a continuous reactor-separator is the process closest to commercialization with a 7,500 liter pilot plant presently sited at an Iowa site to convert whey lactose to ethanol. Accomplishments during 1993 include installation and start-up of a 7,500 liter ICRS for ethanol production at an industry site in Iowa; Donation and installation of a 200 liter yeast pilot Plant to the project from Kenyon Enterprises; Modeling and testing of a low energy system for recovery of ethanol from vapor is using a solvent absorption/extractive distillation system; Simultaneous saccharification/fermentation of raw corn grits and starch in a stirred reactor/separator; Testing of the ability of 'koji' process to ferment raw corn grits in a 'no-cook' process.
