Optimization of the pretreatment of wheat straw for production of bioethanol
|
|
- Clifton Andrews
- 5 years ago
- Views:
Transcription
1 Optimization of the pretreatment of wheat straw for production of bioethanol Eva-Lena Jakobsson Department of Chemical Engineering, Lund University Abstract Bioethanol has some advantages over petrol as fuel. Bioethanol is made from biomass and it is renewable. As the biomass grows it consumes as much carbon dioxide as it forms during the combustion of bioethanol, which makes the net contribution to the green house effect zero. Wheat straw is a good raw material for ethanol production, since wheat straw has a rather high content of cellulose. To make the cellulose more accessible to enzymes the straw was pre-treated with steam at different temperatures (19,, ) and residence times (,, min). Sulphuric acid was used as a catalyst; the straw was impregnated with sulphuric acid before pre-treatment. The evaluation of the pre-treatment was made by enzymatic hydrolysis and fermentation tests. The pre-treatment at 19 and min resulted in the best overall yield for glucose as well as for xylose. g wheat straw yielded 4.6 g glucose and. g xylose. Introduction Gases that retain parts of the radiation from the sun surround the earth. But lately the concentration of these gases has increased; the result is an increased green house effect and therefore global warming [1]. By using bioethanol instead of petrol the emissions of green house gases decreases. The cellulose in biomass can be hydrolysed to sugars that can be fermented into ethanol. Wheat straw has a rather large content of cellulose, roughly 34 % []. The aims of this study were to do a literature study of previous work and then an experimental study of steam pretreatment of wheat straw. The results of the pre-treatment were evaluated with enzymatic hydrolysis and fermentation. Wheat straw The cell walls of wheat straw consist mostly of cellulose fibres. Cellulose is a linear crystalline polymer of (1-4)-β-Dglucose [3]. Hemicellulose is an amorphous and partly crystalline polymer, which mostly consist of (1-4)-β-xylose. Hemicellulose is also present in the cell walls. Lignin, a phenolic polymer, binds the fibres together. Hemicellulose and lignin protects the cellulose, which is why the wheat straw has to be pre-treated before the enzymatic hydrolysis. Pre-treatment The goal for the pre-treatment is to make it easier for the enzymatic hydrolysis. There are many ways of pretreating the material;
2 it can be done chemically, physically, biologically or as a combination of these. The pre-treatment with steam can be done with and without catalysts; a higher yield is obtained with a catalyst [4]. In this study the pre-treatment was preformed with steam pre-treatment with sulphuric acid as a catalyst. In the steam pre-treatment the straw is exposed to steam with high pressure. The water inside the cells evaporates and as the pressure around the straw drops the straw explodes. [] The explosion increases the specific area. Parts of the hemicellulose decomposes to acids which catalyses the decomposition of hemicellulose and lignin, and releases the cellulose. The steam pre-treatment is affected by the temperature of the steam, the residence time in the reactor, the size of the particles, moisture content and the concentration of the catalyst. Log R is a function of residence time and temperature and can be used as a measurement to compare pre-treatment conditions. T T ref Log ( R exp ) Log t (I) 14.7 t = residence time T = temperature T ref = reference temperature () In this study the temperature was varied between 19 and and the residence time between and min, but the concentration of the sulphuric acid was set to. % by weight. The slurry from the pre-treatment was filtrered before enzymatic hydrolysis. Enzymatic Hydrolysis Hydrolysis of the cellulose can be done with acids or with enzymes. The disadvantages when using acids are []: No selectivity A relatively low yield By-products formation Need of high temperature (14-16 ) Demand of neutralisation after the hydrolysis Corrosion problems The enzymes on the other hand are selective, results in a relatively high yield and the hydrolysis is done at lower temperature. There are three different enzymes needed for the enzymatic hydrolysis of cellulose. Endo-glucanase splits the long chains of cellulose to shorter. Cellobiohydrolase cleaves units of two linked glucose molecules (cellobiose) from the ends of the cellulose chain. Finally β-glucosidase cleaves cellobiose into glucose molecules. Most cellulases and β-glucosidase have an optimum at ± and ph 4.-. [6]. Cellobiose inhibits cellulases, but the concentration of cellobiose is rather low since β-glucosidase cleaves cellobiose. Glucose on the other hand inhibits β- glucosidase [6]. During the steam pretreatment some aromatic compounds are formed, from the lignin, which can inhibit both the hydrolysis and the fermentation [7]. The enzymes used in this study were from commercial enzyme mixtures from Novozymes A/S (Bagsværd, Denmark), Celluclast 1. L and Novozyme 188. Material from the pre-treatment was dissolved in acetate buffer, ph 4.8. A total of ml liquid with % dry material,.3 g Celluclast and. g Novozyme was used. The hydrolysis was performed at 4. During the hydrolysis samples were
3 withdrawn from the liquid and these samples were analysed with HPLC. Fermentation The sugar formed in the hydrolysis is fermented into ethanol. The most common microorganism for this purpose is Saccharomyces cerevisiae, which is the same that is used in ordinary baking yeast [8]. S. cerevisiae ferment glucose and mannose. In this study fermentation was done on the filtrate from the pre-treatment. Fermentation was done in order to control if the possible by-products from the pretreatment affected the fermentation. The filtrates were analysed with HPLC for determination of the concentration of fermentable sugars. Glucose was added so that all the filtrates and the reference had the same concentration of fermentable sugars, g/l. The fermentation conditions were 3 and ph.. Samples were withdrawn during the fermentation and analysed with HPLC. SSF Hydrolysis and fermentation can be done simultaneously and this is called simultaneous saccharification and fermentation, SSF. The glucose produced in SSF ferments directly into ethanol. The result of this is that the concentration of glucose is low, and therefore results in a lower inhibition of β-glucosidase. The conditions must be a compromise since hydrolysis of cellulose and fermentation of glucose is performed in the same reactor at the same time. SSF was not investigated experimentially in this study. Results The results are divided into results of pretreatment, yield in the enzymatic hydrolysis, the total yield of sugars and fermentation. Pre-treatment Stream pre-treatment with sulphuric acid as catalyst decomposes lignin. Mainly the acid soluble lignin, but to some part even the acid insoluble lignin, is affected. The more severe the pre-treatment were the less of the lignin was left. Parts of the carbohydrates can be hydrolysed during the pre-treatment. Analysis of the pre-treated material shows that it is primarily xylan that decomposes, which means the hemicellulose. This can be seen in Figure 1. At higher temperatures and longer residence times parts of the glucan can decompose as well. Content (%) Content of glucan and xylan in raw material and washed material Raw 19 Figure 1: The content of glucan and xylan in raw material and in pretreated washed material. Glucan Xylan Since the pre-treatment decomposes both lignin and hemicellulose it is a good way of making the cellulose more available for the enzymes used in the hydrolysis. Enzymatic hydrolysis The yield over the enzymatic hydrolysis can be used as a measurement of how good
4 the pre-treatment was. The pre-treatment at and min resulted in the highest yield of glucose, 96 %. A weak trend that more severe pre-treatment conditions resulted in a higher yield of glucose over the enzymatic hydrolysis can be seen in Figure 1. glucose and xylose for the different pretreatment conditions as well as how much glucose resp. xylose that was produced in the hydrolysis and in the filtrate respectively. Total yield 1,8 Yield over the EH Yield 1, 1,8,6,4, From enzymatic hydrolysis From filtrate Yield,6,4, Glucose Xylose 19 Glucose 19 Xylose,9 3, 3,3 3,4 3,64 3,6 3,94 3,94 4,4 Log R Figure 3: The overall yield of glucose and xylose as function of pre-treatment conditions. Figure : Yield of glucose and xylose over the enzymatic hydrolysis for different severity in the pre-treatment. The highest yield of xylose was achieved for pretreatment at 19 and min. Xylose showed a higher yield at lower temperature than glucose. A reason for this is that xylose is decomposed at more severe pretreatment conditions. Overall sugar yield The overall sugar yield is based on the amount of sugar formed during the enzymatic hydrolysis and the amount of sugar in the filtrate compared with the theoretical amount of sugar in the raw material. Some of the experiment resulted in a higher yield than %, which is impossible. However the results are comparable since all the experiments were done in the same way, by the same person. The highest yield of glucose was achieved for pre-treatment at 19 and min. Xylose resulted in somewhat higher yield for the pre-treatment at 19 and min compared to min. The difference was small and is most likely in the margin of error. Figure 3 shows the overall yield of Fermentation There were by-products present in the filtrate such as HMF and furfural. The amount of by-products formed per amount of raw material increased with increased severity in the pre-treatment. The fermentation tests showed that all filtrates were able to ferment. Most of the filtrates fermented at least as well as the reference did. However the filtrates from pretreatments at the highest temperature, i.e., resulted in a lower ethanol yield than the reference. The yield of ethanol varied from 74 % and % for the different filtrates. Conclusions The high content of cellulose in wheat straw, 34 %, makes it suitable as raw material for production of bioethanol. Steam pre-treatment with sulphuric acid as catalyst works well and results in a high sugar yield. Pre-treatment at for min resulted in the highest yield of glucose
5 in the enzymatic hydrolysis. Pre-treatment at 19 and min resulted in the highest overall yield of sugars, i.e. 1% of the glucose and 79 % of the xylose. It was possible to ferment all of the filtrates. At pre-treatment at higher severity ( ) more by-products were formed, which made the filtrates somewhat harder to ferment. References 1 Warfinge, P. Miljökemi: miljövetenskap i biogeokemiskt perspektiv KFS i Lund AB, 1997 Alfani, F.; Gallifuoco, A.; Saporosi, A.; Spera, A.; Cantarella, M. Comparison of SHF and SSF processes for the bioconversion of steam-exploded wheat straw Journal of Industrial Microbiology & Biotechnology, (4), , () Chemical Engineering I, Lund Sweden, (1996) 6 Tengberg, C. Bioethanol Production: Pretreatment and Enzymatic Hydrolysis of Softwood Doktorsavhandling, Department of Chemical Engineering I, Lund, Sweden, () 7 Galbe, M. Ethanol from wood, An experimental study of pretreatment and hydrolysis process simulation Doktorsavhanling, Department of Chemical Engineering I, Lund, Sweden, (1994) 8 Galbe, M.; Zacchi, G. A review of the production of ethanol from softwood Applied Biochemistry and Biotechnology, 9, , () 3 Danielsson, N-Å. Processteknologi Cellulosateknik Massatillverkning Avdelningen för Kemisk Teknologi, Lund, Sweden (1996) 4 Schell, D.J.; Torget, R.; Power, A.; Walter, P.J.; Grohmann, K.; Hinman, N.D. A Technical and Economic Analysis of Acid-Catalyzed Steam Explosion and Dilute Sulfuric Acid Pretreatments Using Wheat Straw or Aspen Wood Chips Applied Biochemistry and Biotechnology, 8/9, 87-97, (1991) Hellqvist, L. Conversion of straw to ethanol - Optimisation of the pretreatment step Examensarbete, Department of
Ethanol Production from Biomass - Optimization of Simultaneous Saccharification and Fermentation with Respect to Stirring and Heating
Ethanol Production from Biomass - Optimization of Simultaneous Saccharification and Fermentation with Respect to Stirring and Heating JESPER NÖRGÅRD Department. of Chemical Engineering, Lund Institute
More informationSteam Pretreatment Optimisation for Sugarcane Bagasse in Bioethanol Production
Steam Pretreatment Optimisation for Sugarcane Bagasse in Bioethanol Production Johan Sendelius Master of Science Thesis 2005 Department of Chemical Engineering, Lund University, Sweden Abstract: Steam
More informationSECOND GENERATION BIOETHANOL FROM Eucalyptus globulus labill AND Nothofagus pumilio USING IONIC LIQUIDS. María Cristina Ravanal E.
SECOND GENERATION BIOETHANOL FROM Eucalyptus globulus labill AND Nothofagus pumilio USING IONIC LIQUIDS. María Cristina Ravanal E. Centro de Biotecnología y Bioingeniería Universidad de Chile mravanal@ing.uchile.cl
More informationLignin Production by Organosolv Fractionation of Lignocellulosic Biomass W.J.J. Huijgen P.J. de Wild J.H. Reith
Lignin Production by Organosolv Fractionation of Lignocellulosic Biomass W.J.J. Huijgen P.J. de Wild J.H. Reith Presented at the International Biomass Valorisation Congress, 13-15 September 2010, Amsterdam,
More informationMATERIALS & METHODS Microorganisms and cultivation. Keywords: Corncob; Cellulosic hydrolysates; Streptomyces sp.; Reducing sugar; Bioethanol
Pretreatment and hydrolysis of cellulosic agricultural wastes with a cellulaseproducing Streptomyces for bioethanol production Chuan-Liang Hsu a, Ku-Shang Chang b, Yi-Huang Chang b, Hung-Der Jang b, *
More informationExtraction of high molecular mass hemicelluloses prior to ethanol production. Alkali steam pretreatment of wheat and barley straw. Elisabeth Joelsson
Extraction of high molecular mass hemicelluloses prior to ethanol production Alkali steam pretreatment of wheat and barley straw Elisabeth Joelsson Department of Chemical Engineering Lund University P.O.
More informationEthanosolv Pretreatment of Bamboo with Dilute Acid for Efficient Enzymatic Saccharification
Ethanosolv Pretreatment of Bamboo with Dilute Acid for Efficient Enzymatic Saccharification Zhiqiang LI Ph.D. lizq@icbr.ac.cn 55th International Convention of Society of Wood Science and Technology Main
More informationSeparate Hydrolysis and Fermentation of Pretreated Spruce
Department of Physics, Chemistry and Biology Linköping University Master s Thesis Separate Hydrolysis and Fermentation of Pretreated Spruce Josefin Axelsson Performed at SEKAB E-Technology Örnsköldsvik,
More informationImprovements in Bioethanol Production Process from Straw
Improvements in Bioethanol Production Process from Straw Heike Kahr,*, Alexander G. Jäger Upper Austria University of Applied Sciences Research and Development Ltd, Campus Wels Stelzhamerstrasse, A- Wels,
More informationThe effect of acid pretreatment on bio-ethanol and bio-hydrogen production from sunflower straw
nd International Conference on Sustainable Solid Waste Management The effect of acid pretreatment on bio-ethanol and bio-hydrogen production from sunflower straw G. Antonopoulou 1, G. Dimitrellos 1, D.
More informationChallenges of Ethanol Production from Lignocellulosic Biomass
Challenges of Ethanol Production from Lignocellulosic Biomass Maha Dakar Varieties of Carbohydrates Sugar Starch Cellulose/Hemicellulose What All Plants Have in Common Cellulose Glucose Why is it difficult
More informationDevelopment of a Lignocellulose Biorefinery for Production of 2 nd Generation Biofuels and Chemicals
Development of a Lignocellulose Biorefinery for Production of 2 nd Generation Biofuels and Chemicals W.J.J. Huijgen, R. Van der Linden, J.H. Reith & H. den Uil Presented at the Netherlands Process Technology
More informationSimultaneous saccharification and fermentation of Arundo donax - Comparison of feeding strategies
Simultaneous saccharification and fermentation of Arundo donax - Comparison of feeding strategies Bhargav Prasad Kodaganti Abstract Department of Chemical Engineering, Lund University, Sweden September,
More informationDeveloping Herbaceous Energy Crops
USDA - ARS - National Center for Agricultural Utilization Research Developing Herbaceous Energy Crops Michael A. Cotta Fermentation Biotechnology Research Current Paradigm Corn Wheat Sugarcane Potential
More informationCellulosic Biomass Chemical Pretreatment Technologies
Life-changing Research and Development Cellulosic Biomass Chemical Pretreatment Technologies September 6, 2007 Keith Pauley Keith.Pauley@matricresearch.com 800-611-2296 Chemical and Environmental Technologies
More informationEffects of Liquid Hot Water Pretreatment on Enzyme Loading and Hydrolysis of Hardwood
1 Effects of Liquid Hot Water Pretreatment on Enzyme Loading and Hydrolysis of Hardwood Michael Ladisch, Youngmi Kim, Ja Kyong Ko, Tommy Kreke, Eduardo Ximenes Laboratory of Renewable Resources Engineering
More informationBy Srinivas Reddy Kamireddy Department of Chemical Engineering University of North Dakota. Advisor Dr. Yun Ji
By Srinivas Reddy Kamireddy Department of Chemical Engineering University of North Dakota Advisor Dr. Yun Ji Outline Introduction Background Experimental procedure Results and Discussion Conclusion Acknowledgements
More informationBioethanol production: from wood to fuel
Bioethanol production: from wood to fuel JM van Zyl α, LR Lynd β and TM Harms α. α Department of Mechanical and Mechatronic Engineering, Stellenbosch University, RSA β Thayer School of Engineering, Dartmouth
More informationComparison of pretreatments for ethanol production from softwood
DEPARTMENT OF CHEMICAL ENGINEERING LUND UNIVERSITY, LTH Comparison of pretreatments for ethanol production from softwood Comparison between the processes of steam explosion, organosolv, sulphite and ionic
More informationPretreatment of Prevalent Canadian West Coast Softwoods Using the Ethanol Organosolv Process Assessing Robustness of the Ethanol Organosolv Process
Pretreatment of Prevalent Canadian West Coast Softwoods Using the Ethanol Organosolv Process Assessing Robustness of the Ethanol Organosolv Process Johanna Johansson Department of Chemical Engineering,
More informationSimultaneous saccharification and fermentation of steam-exploded corn stover at high glucan loading and high temperature
Liu et al. Biotechnology for Biofuels 2014, 7:167 RESEARCH ARTICLE Open Access Simultaneous saccharification and fermentation of steam-exploded corn stover at high glucan loading and high temperature Zhi-Hua
More informationLeaf Resources Limited Corporate Presentation October 2014
Leaf Resources Limited Corporate Presentation October 2014 Glycell - An Update on Leaf Resources Pretreatment Process for the Conversion of Lignocellulosic Biomass to Fuels and Chemicals Les Edye Bioenergy
More informationDoes densification (pelletisation) restrict the biochemical conversion of biomass?
Does densification (pelletisation) restrict the biochemical conversion of biomass? Linoj Kumar, Zahra Tooyserkani Shahab Sokhansanj, Richard Chandra Jack Saddler* Forest Products Biotechnology/Bioenergy
More informationBiofuels Research at the University of Washington
Biofuels Research at the University of Washington 15 July 2008 Rick Gustafson Paper Science & Engineering College of Forest Resource University of Washington UW biofuels research agenda Vision: Cost effective
More informationSummary & Conclusion
Summary & Conclusion CHAPTER 6 SUMMARY & CONCLUSIONS Concerns regarding the soaring cost of gasoline and the depleting petroleum reserves have led to an urge for a sustainable alternative to gasoline such
More informationComparison of Laboratory and Industrial Saccharomyces cerevisiae Strains for Their Inhibitor Resistance and Xylose Utilization
Comparison of Laboratory and Industrial Saccharomyces cerevisiae Strains for Their Inhibitor Resistance and Xylose Utilization Geng Anli*, Wang Zhankun, Lai Kok Soon and Tan Wei Yi Mark, Goh Kiow Leng
More informationTHERMOPHILIC ENZYMES FOR BIOMASS CONVERSION
Bioenergy- II: Fuels and Chemicals from Renewable Resources THERMOPHILIC ENZYMES FOR BIOMASS CONVERSION Dr. Francesco La Cara Institute of Protein Biochemistry C.N.R. Naples - Italy THERMOPHILIC ENZYMES
More informationCONTINUOUS STEAM EXPLOSION OF WHEAT STRAW BY HIGH PRESSURE MECHANICAL REFINING SYSTEM TO PRODUCE SUGARS FOR BIOCONVERSION
CONTINUOUS STEAM EXPLOSION OF WHEAT STRAW BY HIGH PRESSURE MECHANICAL REFINING SYSTEM TO PRODUCE SUGARS FOR BIOCONVERSION Haixia Fang, a James Deng, a, * and Xiao Zhang b This study demonstrated the use
More informationFed-Batch Mode Optimization of SSF for Cellulosic Ethanol Production from Steam-Exploded Corn Stover
Fed-Batch Mode Optimization of SSF for Cellulosic Ethanol Production from Steam-Exploded Corn Stover Zhen Wang, Zhe Lv, Xiushan Yang, and Shen Tian* To achieve a desired ethanol concentration and maximize
More informationEXPERIMENTAL AND TECHNO-ECONOMIC APPROACHES IN IMPROVEMENT OF THE LIGNOCELLULOSIC-ETHANOL PROCESS
BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY OLÁH GYÖRGY DOCTORAL SCHOOL EXPERIMENTAL AND TECHNO-ECONOMIC APPROACHES IN IMPROVEMENT OF THE LIGNOCELLULOSIC-ETHANOL
More informationEFFECT OF STEAM EXPLOSION TEMPERATURE ON WHEAT STRAW ENZYMATIC HYDROLYSIS
61 (1): 2016 65-74 EFFECT OF STEAM EXPLOSION TEMPERATURE ON WHEAT STRAW ENZYMATIC HYDROLYSIS Albert Russ, Mária Fišerová, Michal Letko, Elena Opálená Pulp and Paper Research Institute Bratislava, Slovak
More information2G ethanol from the whole sugarcane lignocellulosic biomass
Pereira et al. Biotechnology for Biofuels (21) 8:44 DOI 1.1186/s1368-1-224- RESEARCH ARTICLE 2G ethanol from the whole sugarcane lignocellulosic biomass Open Access Sandra Cerqueira Pereira 1, Larissa
More informationBiofuel production using total sugars from lignocellulosic materials. Diego Alonso Zarrin Fatima Szczepan Bielatowicz Oda Kamilla Eide
Biofuel production using total sugars from lignocellulosic materials Diego Alonso Zarrin Fatima Szczepan Bielatowicz Oda Kamilla Eide scope of the presentation 1. Available lignocellulosic materials 2.
More informationEffect Of Alkali Pretreatment and Enzymatic Saccharification on Bagasse Reducing Sugar For Bioethanol Production
1). Technical Implementation Unit for Development of Chemical Engineering Processes GunungKidul, Yogyakarta, Indonesia. Effect Of Alkali Pretreatment and Enzymatic Saccharification on Bagasse Reducing
More informationOptimization of Controlled ph Liquid Hot Water Pretreatment of Corn Fiber and Stover
Optimization of Controlled ph Liquid Hot Water Pretreatment of Corn Fiber and Stover Nathan Mosier, Rick Hendrickson, Youngmi Kim, Meijuan Zeng, Bruce Dien, Gary Welch, Charles Wyman and Michael Ladisch
More informationRESEARCH PAPERS FACULTY OF MATERIALS SCIENCE AND TECHNOLOGY IN TRNAVA SLOVAK UNIVERSITY OF TECHNOLOGY IN BRATISLAVA
RESEARCH PAPERS FACULTY OF MATERIALS SCIENCE AND TECHNOLOGY IN TRNAVA SLOVAK UNIVERSITY OF TECHNOLOGY IN BRATISLAVA 2011 Number 31 OZONE PRETREATMENT OF WHEAT STRAW AND ITS EFFECT ON REDUCING SUGARS IN
More informationXyloFerm - Yeast strains for efficient conversion of lignocellulose into ethanol
XyloFerm - Yeast strains for efficient conversion of lignocellulose into ethanol Nicklas Bonander, Ph.D Principal Scientist Taurus Energy AB, Lund, Sweden Taurus Energy AB, Lund, SWEDEN SEKAB, Biorefinery
More informationFermentation of pretreated source separated organic (SSO) waste for ethanol production by different bacteria
Fermentation of pretreated source separated organic (SSO) waste for ethanol production by different bacteria by Bekmuradov Valeriy, Luk Grace and Luong Robin Ryerson University Toronto, Canada Montreal,
More informationCharacterization of tree and wood fractions for biorefinery applications SARA JOHANSSON COST FP0901 TURKU SEPTEMBER 18, 2013
Characterization of tree and wood fractions for biorefinery applications SARA JOHANSSON COST FP0901 TURKU SEPTEMBER 18, 2013 To characterize differences in raw material composition and processability of
More informationInfluence of different SSF conditions on ethanol production from corn stover at high solids loadings
Downloaded from orbit.dtu.dk on: Feb 03, 2018 Influence of different SSF conditions on ethanol production from corn stover at high solids loadings Gladis, Arne Berthold; Bondesson, Pia-Maria; Galbe, Mats;
More informationEffect of particle size on enzymatic hydrolysis of pretreated miscanthus
Engineering Conferences International ECI Digital Archives BioEnergy IV: Innovations in Biomass Conversion for Heat, Power, Fuels and Chemicals Proceedings Spring 6-13-2013 Effect of particle size on enzymatic
More informationProduction of Biofuels and Value-Added Products
Metabolically engineered microbial systems and the conversion of agricultural biomass into simple sugars Microbial for the production Systems of biofuels For and The valueadded products Production of Biofuels
More informationMoving towards commercialization of lignocellulosic biomass to fuels to chemicals. How to deal with heterogeneous biomass?
Moving towards commercialization of lignocellulosic biomass to fuels to chemicals. How to deal with heterogeneous biomass? Renata Bura, Shannon Ewanick, Erik Budsberg, Jordan Crawford, Brian Marquardt
More informationNovozymes Cellic CTec3 HS - secure your plant's lowest cost
Bioenergy Application sheet Novozymes Cellic CTec3 HS - secure your plant's lowest cost Cellic CTec3 HS is a highly efficient cellulase and hemicellulase complex that ensures a cost-efficient conversion
More informationBiomass Pretreatment: What do we really know?
Biomass Pretreatment: What do we really know? Bradley A. Saville, Ph.D., P.Eng University of Toronto Department of Chemical Engineering and Applied Chemistry Pretreatment: Role and History Initiated >
More informationThe objective of this work was the production of ethanol
1.12 Bioethanol from sugar cane bagasse Urribarrí, Lauris 1 * Ferrer, Alexis 2 Aiello, Cateryna 3 Rivera, Jhoandry 4 Abstract The objective of this work was the production of ethanol by simultaneous saccharification
More informationSimulation of a Hydrogen Production Process from Algae
A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 27, 2012 Guest Editors: Enrico Bardone, Alberto Brucato, Tajalli Keshavarz Copyright 2012, AIDIC Servizi S.r.l., ISBN 978-88-95608-18-1; ISSN 1974-9791
More informationRecent Developments and Current Situation of Cellulosic Ethanol R&D in Brazil
Recent Developments and Current Situation of Cellulosic Ethanol R&D in Brazil Research Center in Applied Chemistry Department of Chemistry Federal University of Paraná (UFPR), Brazil www.quimica.ufpr.br/paginas/luiz-ramos
More informationRapid Evaluation of Research Proposals Using Aspen Plus NREL. Our Business. Rapid Economic Evaluation Allows Management to:
Rapid Evaluation of Research Proposals Using Aspen Plus AspenWorld 2000 Presentation February 6-11, 2000 Orlando, FL Robert J. Wooley, PhD, PE Kelly Ibsen, PE National Renewable Energy Laboratory Golden,
More informationEffect of Liquid Hot Water Pretreatment on Switchgrass Hydrolysis
Effect of Liquid Hot Water Pretreatment on Switchgrass Hydrolysis Youngmi Kim, Nathan S. Mosier, Michael R. Ladisch Laboratory of Renewable Resources Engineering (LORRE) Purdue University Presented at
More informationProcess Synthesis for Fuel Ethanol Production from Lignocellulosic Biomass Using an Optimization-Based Strategy
Process Synthesis for Fuel Ethanol Production from Lignocellulosic Biomass Using an Optimization-Based Strategy Óscar J Sánchez 1,2 Eric S Fraga 2 Carlos A Cardona 3 1 Department of Engineering, Universidad
More informationEnzymatic Conversion of Biomass to Ethanol
Enzymatic Conversion of Biomass to Ethanol Alfalfa/Corn Rotations for Sustainable Cellulosic Biofuels Production June 29-30, 2010 Pioneer Hi-Bred Carver Center Johnston, IA 2 Genencor, a Danisco Division
More informationBiofuels: Renewable Transportation Fuels from Biomass
National Renewable Energy Laboratory Biofuels: Renewable Transportation Fuels from Biomass Cynthia Riley Biotechnology Division for Fuels and Chemicals National Bioenergy Center Utility Federal Technology
More informationNiklas Berglin, Innventia
New 2G process for ethanol from wood Niklas Berglin, Innventia 1 2 3 Energy density is a key issue for biofuels Chips 0.8 Wood pellets 3 Torrefied wood & Lignin powder 5 Ethanol 6 Slash 0.4 Our focus 4
More informationSaccharification versus simultaneous saccharification and fermentation of kraft pulp
48 March, 2012 Int J Agric & Biol Eng Vol. 5 No.1 Saccharification versus simultaneous saccharification and fermentation of kraft pulp Nichole A. Bauer, William R. Gibbons (Biology-Microbiology Department,
More informationto-wheels Graduate Enterprise: Bioprocessing Initiatives
A Wood-to to-wheels Graduate Enterprise: Bioprocessing Initiatives David R. Shonnard Department of Chemical Engineering, Michigan Technological University, Houghton, MI 49931 Presentation to MEDC and Other
More informationEvaluation of bamboo as a feedstock for bioethanols in Taiwan
Evaluation of bamboo as a feedstock for bioethanols in Taiwan Ya-Nang Wang 1,2, Chun-Han Ko 2,3,*, Chih-Yuan Lee 2, Heng-Ping Tsai 2, Wen-Hua Chen 4, Wen-Song Hwang 4, Ming-Jer Tsai 1,2, Fang-Chih Chang
More informationActivities in UW Forest Resources and Lignocellulosic Biorefineries
Activities in UW Forest Resources and Lignocellulosic Biorefineries Rick Gustafson, Renata Bura, Bill McKean, Sharon Doty, Brian Marquardt, Rob Synovec, Joyce Cooper 3 May 2010 U.S. Renewable Fuel Standard
More informationDistinct Roles of Residual Xylan and Lignin in Limiting Enzymatic Hydrolysis of Organosolv Pretreated Woody Biomass
Distinct Roles of Residual Xylan and Lignin in Limiting Enzymatic Hydrolysis of Organosolv Pretreated Woody Biomass Maobing Tu Forest Products Laboratory Auburn University 1 Tu Research Group: Carbohydrate-derived
More informationTMP-Bio for Converting Cellulosic Biomass to 2nd Generation Sugar and Near-native Lignin
TMP-Bio for Converting Cellulosic Biomass to 2nd Generation Sugar and Near-native Lignin Changbin Mao, Zhirun Yuan, Luis Fernando Del Rio, Waleed Wafa Al Dajani, David Wong, Thomas Browne FPInnovations,
More informationLiquid Hot Water Pretreatment of Rice Straw for Enzymatic Hydrolysis
Liquid Hot Water Pretreatment of Rice Straw for Enzymatic Hydrolysis Saksit Imman 1,3, Jantima Arnthong 2, Navadol Laosiripojana 1,3 and Verawat Champreda 2,* 1 The Joint Graduate School of Energy and
More informationBiomass hydrolysis and ethanol production
Chapter 10 Biomass hydrolysis and ethanol production 10.1. Introduction Efficient hydrolysis of cellulosic biomass would allow its utilization for bioethanol production. Development of technologies for
More informationWood to Wheel: Process Improvement for the Production of Substituted Fuels from Renewable Biomass
Wood to Wheel: Process Improvement for the Production of Substituted Fuels from Renewable Biomass POKE Symposium 10-16.08.2014, Ösel Venkata Prabhakar Soudham venkata.soudham@chem.umu.se The Problem: Our
More informationIncreasing Ethanol Titer and Reducing Enzyme Dosage via Fed-Batch, Simultaneous Saccharification and Fermentation in a High Solids Bioreactor
Avestia Publishing Journal of Biomass to Biofuel Volume 1, Year 214 ISSN: 2368-5964 DOI: 1.11159/jbb.214.5 Increasing Ethanol Titer and Reducing Enzyme Dosage via Fed-Batch, Simultaneous Saccharification
More informationThe Potentially Promising Technologies for Conversion Woody Biomass to Sugars for Biofuel Production: Technology and Energy Consumption Evaluation
The Potentially Promising Technologies for Conversion Woody Biomass to Sugars for Biofuel Production: Technology and Energy Consumption Evaluation J.Y. Zhu US Forest Service, Forest Products Laboratory,
More informationThe possibility of longan tree trimming waste for the bioethanol production
Available online at www.buuconference.buu.ac.th The 5 th Burapha University International Conference 2016 Harmonization of Knowledge towards the Betterment of Society The possibility of longan tree trimming
More informationYong Tang 1, Danqing Zhao 1, Carrasco Cristhian 2 and Jianxin Jiang 1* Abstract
RESEARCH Open Access Simultaneous saccharification and cofermentation of lignocellulosic residues from commercial furfural production and corn kernels using different nutrient media Yong Tang 1, Danqing
More informationSWEET SORGHUM JUICE AND BAGASSE AS A POSSIBLE FEEDSTOCK FOR BIOETHANOL PRODUCTION
HUNGARIAN JOURNAL OF INDUSTRIAL CHEMISTRY VESZPRÉM Vol. 36(1-2) pp. 43-48 (28) SWEET SORGHUM JUICE AND BAGASSE AS A POSSIBLE FEEDSTOCK FOR BIOETHANOL PRODUCTION M. GYALAI-KORPOS 1, J. FECZÁK 2, K. RÉCZEY
More informationKET050 Feasibility Studies on Industrial Plants Dept. of Chemical Engineering, Lund University
KET050-2016 KET050 Feasibility Studies on Industrial Plants Dept. of Chemical Engineering, Lund University A Feasibility Study on Retrofitting a starch based ethanol production to lignocellulosic materials
More informationCopyright Shannon M. Ewanick
Copyright 2012 Shannon M. Ewanick Improving the bioconversion yield of carbohydrates and ethanol from lignocellulosic biomass Shannon M. Ewanick A dissertation submitted in partial fulfillment of the requirements
More informationEnzymatic hydrolysis of corn stalk in a hollow fiber ultrafiltration membrane reactor
biomass and bioenergy 33 (2009) 332 336 Available at www.sciencedirect.com http://www.elsevier.com/locate/biombioe Technical note Enzymatic hydrolysis of corn stalk in a hollow fiber ultrafiltration membrane
More informationINDUSTRIAL ENZYMES FOR CELLULOSIC SUGARS AND BEYOND
INDUSTRIAL ENZYMES FOR CELLULOSIC SUGARS AND BEYOND THE POWER AND SPEED OF TAILORED SOLUTIONS EuroNanoForum 2017 Malta, June 22 nd MATTI HEIKKILÄ CTO METGEN STRATEGIC FOCUS Lignocellulosic biomass conversion
More informationProduction Of Fermentable Sugars By Dilute Acid Pretreatment And Enzymatic Saccharification Of Three Different Lignocellulosic Materials
International Journal of ChemTech Research CODEN( USA): IJCRGG ISSN : 0974-4290 Vol.4, No.4, pp 1497-1502, Oct-Dec 2012 Production Of Fermentable Sugars By Dilute Acid Pretreatment And Enzymatic Saccharification
More informationShodex HPLC approach for biomass related analysis
Shodex HPLC approach for biomass related analysis Kanna Ito, Shodex /Showa Denko America, Inc. Data provided by Showa Denko K.K. Introduction: Biomass is a renewable energy source obtained from biological
More informationNOVEL APPLICATION OF MEMBRANE BIOREACTORS IN LIGNOCELLULOSIC ETHANOL PRODUCTION
DOCTORAL THESIS Resource Recovery NOVEL APPLICATION OF MEMBRANE BIOREACTORS IN LIGNOCELLULOSIC ETHANOL PRODUCTION Mofoluwake Moronfade Ishola Simultaneous Saccharification, Filtration and Fermentation
More informationCOMPARISON OF DIFFERENT PRETREATMENT METHODS ON DEGRADATION OF RYE STRAW
COMPARISON OF DIFFERENT PRETREATMENT METHODS ON DEGRADATION OF RYE STRAW Marti Tutt, Timo Kikas, Juri Olt Estonian University of Life Sciences marti.tutt@emu.ee Abstract. This article investigates the
More informationEmerging Markets: Biotechnology. MC Jarvis Glasgow University and IBioIC
Emerging Markets: Biotechnology MC Jarvis Glasgow University and IBioIC M.C. Jarvis. Forest and Timber Industry Leadership Group. Edinburgh, 30 Nov 2015 Biotechnology Plant biotechnology Tree improvement
More informationRequirements for characterization of biorefinery residues
COST FP0901 meeting Current needs in biorefinery analytics WG 3: Process Residues Requirements for characterization of biorefinery residues Ina Körner 1, Ron Janzon 2, Helmut Adwiraah 1, Jörn Heerenklage
More informationPretreatment Methods for Banana Peel as a Substrate for the Bioproduction of Ethanol in SHF and SSF
Pretreatment Methods for Banana Peel as a Substrate for the Bioproduction of Ethanol in SHF and SSF Nuttiya Chantawongsa Division of Biochemical Technology, School of Bioresources and Technology, King
More informationThe CIMV organosolv Process. B. Benjelloun
The CIMV organosolv Process B. Benjelloun 2 BIOREFINERY CONCEPT THE CIMV PROCESS Based on the oil refining model. Promote 100% of the non-food Biomass in Biofuels and/or Bioproducts. High feedstocks fexilibility
More informationDr. N. Anil 1, Nukala Narasimha Naidu 2, Kodukula Sudarshan 3 Anurag Group of Institutions, India
Pre-Treatment Process for Sorghum Biomass for Preparation of Bio-Ethanol Dr. N. Anil 1, Nukala Narasimha Naidu 2, Kodukula Sudarshan 3 Anurag Group of Institutions, India I. INTRODUCTION A. BIO-MASS Biomass
More informationApplications of Molecular Biotechnology
Applications of Molecular Biotechnology Ethanol Production from Cellulosic Biomass David R. Shonnard CM4710 Biochemical Processes November 28, 2003 Environmental Issues in Ethanol Production and Use A.J.
More informationRubbish or resources: an investigation into converting municipal solid waste to bio-ethanol production
Waste to Energy 29 Rubbish or resources: an investigation into converting municipal solid waste to bio-ethanol production A. Li & M. Khraisheh University College London, UK Abstract An investigation into
More informationLeaf Resources Limited Corporate Presentation October 2014
Leaf Resources Limited Corporate Presentation October 2014 Glycell Leaf Resources pretreatment process for the conversion of lignocellulosic biomass to fuels and chemicals Les A. Edye, Alex Baker and Marc
More informationOptimisation of the Fermentation of Dilute Acid Hydrolyzed Pine using Saccharomyces Cerevisiae for 2 nd Generation Bioethanol Production
Optimisation of the Fermentation of Dilute Acid Hydrolyzed Pine using Saccharomyces Cerevisiae for 2 nd Generation Bioethanol Production Peter Larsson Department of Chemical Engineering, Lund University
More informationTechno economic evaluation of integrated first and second generation ethanol production from grain and straw
DOI 10.1186/s13068-015-0423-8 Biotechnology for Biofuels RESEARCH Open Access Techno economic evaluation of integrated first and second generation ethanol production from grain and straw Elisabeth Joelsson
More informationCellulosic Conversion to Bioethanol from Pongamia Pod A Biodiesel Industry Waste
International OPEN ACCESS Journal Of Modern Engineering Research (IJMER) Cellulosic Conversion to Bioethanol from Pongamia Pod A Biodiesel Industry Waste Yashaswi R.Metri 1, Dr.Bharati S.Meti 2 Department
More informationTHE EFFECT OF CATALASE ON ENZYMATIC SACCHARIFICATION OF WHEAT STRAW SLURRY. Master of Science Thesis LOUISE SAMUELSSON
THE EFFECT OF CATALASE ON ENZYMATIC SACCHARIFICATION OF WHEAT STRAW SLURRY Master of Science Thesis LOUISE SAMUELSSON Department of Biology and Biological Engineering CHALMERS UNIVERSITY OF TECHNOLOGY
More informationImagine a renewable world
Conversion of Woody Biomass to Chemicals, Energy and Materials Shijie Liu and Thomas E. Amidon Biorefinery Research Institute Department of Paper and Bioprocess Engineering SUNY College of Environmental
More informationEthanol and biogas production after steam pretreatment of corn stover with or without the addition of sulphuric acid
Bondesson et al. Biotechnology for Biofuels 213, 6:11 RESEARCH Open Access Ethanol and biogas production after steam pretreatment of corn stover with or without the addition of sulphuric acid Pia-Maria
More informationNordic Association of Agricultural Scientists
NJF Report Vol 3 No 4 Year 2007 Nordic Association of Agricultural Scientists NJF Seminar 405 Production and Utilization of Crops for Energy Vilnius, Lithuania, 25-26 September 2007 Straw biomass potential
More informationBIOFUELS: EUROPEAN EUROPEAN -- SPANISH OVERVIEW Mercedes Ballesteros Head of Biofuels Unit CIEMAT 3rd March,
BIOFUELS: EUROPEAN - SPANISH OVERVIEW Mercedes Ballesteros Head of Biofuels Unit CIEMAT 3rd March, 2011 1 OUTLINE CURRENT BIOFUELS PRODUCTION NEW OBJECTIVES FOR 2020 SECOND GENERATION BIOFUELS CIEMAT s
More informationSupplementary Materials for. ethanol using bionic liquids
Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2016 Supplementary Materials for CO 2 enabled process integration for the production
More informationInfluence of harvesting time on biochemical composition and glucose yield from hemp
Agronomy Research 11 (1), 215 220, 2013 Influence of harvesting time on biochemical composition and glucose yield from hemp M. Tutt *, T. Kikas and J. Olt Institute of Technology, Estonian University of
More informationEthanol-based Organosolv Pretreatment of Wheat Straw
Ethanol-based Organosolv Pretreatment of Wheat Straw W.J.J. Huijgen (ECN) J.W. van Hal (ECN) G. Telysheva (Latvian state Institute of Wood Chemistry) R.J.A. Gosselink (Wageningen UR Food & Biobased Research)
More informationWater Management in Lignocellulosic Ethanol Production- a Case Study and Comparative Analysis from a Swedish Perspective
703 A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 52, 2016 Guest Editors: Petar Sabev Varbanov, Peng-Yen Liew, Jun-Yow Yong, Jiří Jaromír Klemeš, Hon Loong Lam Copyright 2016, AIDIC Servizi S.r.l.,
More informationANALYSIS OF FUEL ETHANOL PRODUCTION PROCESSES USING LIGNOCELLULOSIC BIOMASS AND STARCH AS FEEDSTOCKS
ANALYSIS OF FUEL ETHANOL PRODUCTION PROCESSES USING LIGNOCELLULOSIC BIOMASS AND STARCH AS FEEDSTOCKS C.A. Cardona *, O.J. Sánchez *,**, M.I. Montoya *, J.A. Quintero * * Department of Chemical Engineering,
More informationA comparative study of ethanol production using dilute acid, ionic liquid and AFEX pretreated corn stover
Uppugundla et al. Biotechnology for Biofuels 2014, 7:72 RESEARCH Open Access A comparative study of ethanol production using dilute acid, ionic liquid and AFEX pretreated corn stover Nirmal Uppugundla
More informationFEASIBILITY OF ETHANOL PRODUCTION USING THE WHOLE SUGARCANE BIOMASS
FEASIBILITY OF ETHANOL PRODUCTION USING THE WHOLE SUGARCANE BIOMASS SANDRA CERQUEIRA PEREIRA 1, LARISSA MAEHARA 1,2, CRISTINA MARIA MONTEIRO MACHADO 3 AND CRISTIANE SANCHEZ FARINAS 1,2 1 Brazilian Agricultural
More informationA facile and fast method for quantitating lignin in lignocellulosic biomass using acidic
Electronic Supplementary Material (ESI) for Green Chemistry. This journal is The Royal Society of Chemistry 2016 Electronic Supporting Information (ESI) A facile and fast method for quantitating lignin
More information