title: Enhancing anaerobic digestion of cotton stalk by pretreatment with a microbial consortium (MC1).
abstract: Microbial pretreatment is beneficial in some anaerobic digestion systems, but the consortia used to date have not been able to effectively increase methane production from cotton stalk. In this study, a thermophilic microbial consortium (MC1) was used for pretreatment in order to enhance biogas and methane production yields. The results indicated that the concentrations of soluble chemical oxygen demand and volatile organic products increased significantly in the early stages of pretreatment. Ethanol, acetic acid, propionic acid, and butyric acid were the predominant volatile organic products in the MC1 hydrolysate. Biogas and methane production yields from cotton stalk were significantly increased following MC1 pretreatment. In addition, the methane production rate from the treated cotton stalk was greater than that from the untreated sample.
authors.affiliation: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors.forename: Xufeng
authors.initials: X
authors.lastname: Yuan
authors.affiliation: State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Ma
authors.affiliation: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors.forename: Boting
authors.initials: B
authors.lastname: Wen
authors.affiliation: State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China.
authors.forename: Dayun
authors.initials: D
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Kuang
authors.affiliation: State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China.
authors.forename: Weihua
authors.initials: W
authors.lastname: Yang
authors.affiliation: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China. Electronic address: acuizj@cau.edu.cn.
authors.forename: Zongjun
authors.initials: Z
authors.lastname: Cui
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D002482:Cellulose / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry; D003368:Gossypium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism; D008697:Methane / Q000096:biosynthesis; D059013:Microbial Consortia; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012037:Refuse Disposal / Q000379:methods*; D012995:Solubility; D055549:Volatile Organic Compounds / Q000032:analysis; D014866:Waste Products
chemical_list: D056804:Biofuels; D012336:RNA, Ribosomal, 16S; D055549:Volatile Organic Compounds; D014866:Waste Products; C036909:lignocellulose; D002482:Cellulose; D008031:Lignin; D008697:Methane
keywords: Anaerobic digestion; Cotton stalk; Methane production rate; Methane production yield; Microbial consortium