title: Anaerobic co-digestion of chicken manure and corn stover in batch and continuously stirred tank reactor (CSTR).
abstract: Anaerobic co-digestion of chicken manure and corn stover in batch and CSTR were investigated. The batch co-digestion tests were performed at an initial volatile solid (VS) concentration of 3gVS/L, carbon-to-nitrogen (C/N) ratio of 20, and retention time of 30d. The methane yield was determined to be 281±12mL/gVSadded. Continuous reactor was carried out with feeding concentration of 12% total solids and C/N ratio of 20 at organic loading rates (OLRs) of 1-4gVS/L/d. Results showed that at OLR of 4gVS/L/d, stable and preferable methane yield of 223±7mL/gVSadded was found, which was equal to energy yield (EY) of 8.0±0.3MJ/kgVSadded. Post-digestion of digestate gave extra EY of 1.5-2.6MJ/kgVSadded. Pyrolysis of digestate provided additional EY of 6.1MJ/kgVSadded. Pyrolysis can be a promising technique to reduce biogas residues and to produce valuable gas products simultaneously.
authors: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors: Yeqing
authors: Y
authors: Li
authors: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China; Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, United States.
authors: Ruihong
authors: R
authors: Zhang
authors: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors: Yanfeng
authors: Y
authors: He
authors: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors: Chenyu
authors: C
authors: Zhang
authors: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors: Xiaoying
authors: X
authors: Liu
authors: College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: chenchang@mail.buct.edu.cn.
authors: Chang
authors: C
authors: Chen
authors: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: gqliu@mail.buct.edu.cn.
authors: Guangqing
authors: G
authors: Liu
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D061249:Batch Cell Culture Techniques / Q000295:instrumentation* / Q000379:methods*; D056804:Biofuels; D019149:Bioreactors; D002645:Chickens; D008372:Manure / Q000032:analysis*; D008697:Methane / Q000378:metabolism; D013696:Temperature; D013818:Thermogravimetry; D014866:Waste Products / Q000032:analysis*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D056804:Biofuels; D008372:Manure; D014866:Waste Products; D008697:Methane
keywords: Biogas digestate; Chicken manure; Co-digestion; Corn stover; Pyrolysis