title: Anaerobic biohydrogen production from wheat stalk by mixed microflora: kinetic model and particle size influence.
abstract: This study investigated the influence of particle size on anaerobic biohydrogen production from wheat stalk by mixed microflora. In addition, the kinetic model for the formation of main products was also mentioned. The results demonstrated that all the cumulative productions of hydrogen, acetate and butyrate decreased as the particle size increasing from 1 to 10mm at a constant TS value of 2%, 5% and 8%, respectively. However, this difference for aqueous products was not very obvious compared with hydrogen. A modified Gompertz equation was able to adequately describe the cumulative production of hydrogen, acetate and butyrate (R² higher than 0.989). The results also indicated that the formation of the main products were all associated with the degradation of cellulose and hemicellulose (R² higher than 0.855).
authors.affiliation: Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China.
authors.forename: Xianzheng
authors.initials: X
authors.lastname: Yuan
authors.forename: Xiaoshuang
authors.initials: X
authors.lastname: Shi
authors.forename: Peidong
authors.initials: P
authors.lastname: Zhang
authors.forename: Yueli
authors.initials: Y
authors.lastname: Wei
authors.forename: Rongbo
authors.initials: R
authors.lastname: Guo
authors.forename: Lisheng
authors.initials: L
authors.lastname: Wang
mesh_terms: D000085:Acetates / Q000378:metabolism; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D002087:Butyrates / Q000378:metabolism; D002849:Chromatography, Gas; D005232:Fatty Acids, Volatile / Q000378:metabolism; D006859:Hydrogen / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008954:Models, Biological; D010316:Particle Size; D018547:Plant Stems / Q000737:chemistry / Q000378:metabolism*; D014908:Triticum / Q000737:chemistry*
chemical_list: D000085:Acetates; D002087:Butyrates; D005232:Fatty Acids, Volatile; D006859:Hydrogen