title: Comparison of anaerobic digestion characteristics and kinetics of four livestock manures with different substrate concentrations.
abstract: Anaerobic digestions of pig manure (PM), dairy manure (DM), chicken manure (CM) and rabbit manure (RM) at initial volatile solid loading (VSL) of 8 g VS/L, 16 g VS/L, 32 g VS/L, 64 g VS/L were investigated under mesophilic conditions. The maximum methane yields of 410, 270, 377 and 323 mL CH4/g VSadded for PM, DM, CM and RM were all obtained at initial VSL of 8 g VS/L, respectively. The improvement of substrate concentration to 64 g VS/L not only decreased the methane yield and biodegradability both by 22.4%, 37.3%, 49.1% and 34.6% for PM, DM, CM and RM respectively, but also reduced the methane content in final biogas production. The Cone model (R(2): 0.9910-0.9974) showed a better fit to the experiment data and the calculated parameters indicated that anaerobic digestion of manures at higher loading has longer lag phase and lower hydrolysis rate.
authors.affiliation: Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China; Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, 800 Dongchuan Road, Shanghai 200240, PR China.
authors.forename: Kun
authors.initials: K
authors.lastname: Li
authors.affiliation: Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China; Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, 800 Dongchuan Road, Shanghai 200240, PR China. Electronic address: liurhou@sjtu.edu.cn.
authors.forename: Ronghou
authors.initials: R
authors.lastname: Liu
authors.affiliation: Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China; Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, 800 Dongchuan Road, Shanghai 200240, PR China.
authors.forename: Chen
authors.initials: C
authors.lastname: Sun
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001673:Biodegradation, Environmental; D056804:Biofuels; D002645:Chickens; D004063:Digestion; D006868:Hydrolysis; D007700:Kinetics; D058751:Livestock; D008372:Manure / Q000032:analysis*; D008697:Methane / Q000096:biosynthesis; D008962:Models, Theoretical; D011817:Rabbits; D013552:Swine
chemical_list: D056804:Biofuels; D008372:Manure; D008697:Methane
keywords: Anaerobic digestion; Kinetics; Livestock manures; Substrate concentrations