title: Anaerobic digestion performance of vinegar residue in continuously stirred tank reactor.
abstract: Anaerobic digestion (AD) of vinegar residue was investigated in continuously stirred tank reactor (CSTR). The influence of organic loading rate (OLR) and effluent recirculation on AD performance of vinegar residue was tested. Five OLRs, 1.0, 1.5, 2.0, 2.5, and 3.0 g(vs) L(-1) d(-1), were used. The highest volumetric methane productivity of 581.88 mL L(-1) was achieved at OLR of 2.5 g(vs) L(-1) d(-1). Effluent reflux ratio was set as 50%, the results showed that effluent recirculation could effectively neutralize the acidity of vinegar residue, raise the pH of the feedstock, and enhance the buffering capacity of the AD system. Anaerobic digestion of vinegar residue could be a promising way not only for converting this waste into gas energy but also alleviating environmental pollution which might be useful for future industrial application.
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Li
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China; CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Feng
authors.affiliation: 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.forename: Ruihong
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: He
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Wang
authors.affiliation: College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: chenchang@mail.buct.edu.cn.
authors.forename: Chang
authors.initials: C
authors.lastname: Chen
authors.affiliation: 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.forename: Guangqing
authors.initials: G
authors.lastname: Liu
mesh_terms: D019342:Acetic Acid / Q000378:metabolism*; D000704:Analysis of Variance; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D056804:Biofuels; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000096:biosynthesis*
chemical_list: D056804:Biofuels; D008697:Methane; D019342:Acetic Acid
keywords: Anaerobic digestion; Continuously stirred tank reactor; Effluent recirculation; Organic loading rate; Vinegar residue