Effect of biological pretreatments in enhancing corn straw biogas production.

A biological pretreatment with new complex microbial agents was used to pretreat corn straw at ambient temperature (about 20°C) to improve its biodegradability and anaerobic biogas production. A complex microbial agent dose of 0.01% (w/w) and pretreatment time of 15 days were appropriate for biological pretreatment. These treatment conditions resulted in 33.07% more total biogas yield, 75.57% more methane yield, and 34.6% shorter technical digestion time compared with the untreated sample. Analyses of chemical compositions showed 5.81-25.10% reductions in total lignin, cellulose, and hemicellulose contents, and 27.19-80.71% increases in hot-water extractives; these changes contributed to the enhancement of biogas production. Biological pretreatment could be an effective method for improving biodegradability and enhancing the highly efficient biological conversion of corn straw into bioenergy.

[1]  Charles J. Banks,et al.  The effect of volatile fatty acid additions on the anaerobic digestion of cellulose and glucose in batch reactors , 2005 .

[2]  G. Zeeman,et al.  Effects of thermo-chemical pre-treatment on anaerobic biodegradability and hydrolysis of lignocellulosic biomass. , 2009, Bioresource technology.

[3]  A. Prochnow,et al.  Influence of silage additives on methane yield and economic performance of selected feedstock , 2009 .

[4]  A. Demirbas,et al.  Products from Lignocellulosic Materials via Degradation Processes , 2007 .

[5]  M. Demirbas,et al.  Biowastes-to-biofuels , 2011 .

[6]  A. Demirbas,et al.  Biomass resource facilities and biomass conversion processing for fuels and chemicals , 2001 .

[7]  P. Mccarty,et al.  Bioassay for monitoring biochemical methane potential and anaerobic toxicity , 1979 .

[8]  J. Rintala,et al.  Storing energy crops for methane production: effects of solids content and biological additive. , 2008, Bioresource technology.

[9]  Z. Tan,et al.  Effects of cellulase or lactic acid bacteria on silage fermentation and in vitro gas production of several morphological fractions of maize stover , 2009 .

[10]  Mohammad J. Taherzadeh,et al.  Ethanol production from dilute-acid pretreated rice straw by simultaneous saccharification and fermentation with Mucor indicus, Rhizopus oryzae, and Saccharomyces cerevisiae , 2006 .

[11]  M. Moo-young,et al.  Methane generation by anaerobic digestion of cellulose-containing wastes , 1979 .

[12]  Shuzo Tanaka,et al.  Effects of thermochemical pretreatment on the anaerobic digestion of waste activated sludge , 1997 .

[13]  A. Hatakka.  Lignin-modifying enzymes from selected white-rot fungi: production and role from in lignin degradation , 1994 .

[14]  B. Hameed,et al.  Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char. , 2008, Journal of hazardous materials.

[15]  B. Ahring,et al.  Increase of anaerobic degradation of particulate organic matter in full-scale biogas plants by mechanical maceration. , 2000, Water science and technology : a journal of the International Association on Water Pollution Research.

[16]  M. Fraser,et al.  The effect of harvest date and inoculation on the yield, fermentation characteristics and feeding value of forage pea and field bean silages , 2001 .

[17]  Hong-Wei Yen,et al.  Anaerobic co-digestion of algal sludge and waste paper to produce methane. , 2007, Bioresource technology.

[18]  K. Nand,et al.  Fungal pretreatment of Orange Processing Waste by solid-state fermentation for improved production of methane , 1995 .

[19]  Irini Angelidaki,et al.  Production of bioethanol from wheat straw: An overview on pretreatment, hydrolysis and fermentation. , 2010, Bioresource technology.

[20]  A. Nizami,et al.  Role of Leaching and Hydrolysis in a Two-Phase Grass Digestion System , 2010 .

[21]  M. Fraser,et al.  The effect of harvest date and inoculation on the yield and fermentation characteristics of two varieties of white lupin (Lupinus albus) when ensiled as a whole-crop , 2005 .

[22]  M. Ohkuma.  Termite symbiotic systems: efficient bio-recycling of lignocellulose , 2003, Applied Microbiology and Biotechnology.

[23]  Xiujin Li,et al.  Anaerobic Co-Digestion of Cattle Manure with Corn Stover Pretreated by Sodium Hydroxide for Efficient Biogas Production , 2009 .

[24]  Xiujin Li,et al.  Enhancing anaerobic biogasification of corn stover through wet state NaOH pretreatment. , 2009, Bioresource technology.

[25]  P. V. Soest,et al.  Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. , 1991, Journal of dairy science.

[26]  Ye Sun,et al.  Hydrolysis of lignocellulosic materials for ethanol production: a review. , 2002, Bioresource technology.

[27]  A. E. Greenberg,et al.  Standard Methods for the Examination of Water and Wastewater seventh edition , 2013 .

[28]  T. Hansen,et al.  Method for determination of methane potentials of solid organic waste. , 2004, Waste management.

[29]  M. Taherzadeh,et al.  Pretreatment of Lignocellulosic Wastes to Improve Ethanol and Biogas Production: A Review , 2008, International journal of molecular sciences.

[30]  C. Coble,et al.  Feedstock storage, handling and processing , 1993 .

[31]  J. M. Owens,et al.  Biochemical methane potential of biomass and waste feedstocks , 1993 .

[32]  中華人民共和国国家統計局.  China statistical yearbook , 1988 .

[33]  Lirong Ma,et al.  Utilization of straw in biomass energy in China , 2007 .

[34]  I. Pearl,et al.  INVESTIGATION OF THE HOT WATER EXTRACTIVES OF POPULUS BALSAMIFERA BARK , 1969 .