title: Anaerobic co-digestion of kitchen waste and fruit/vegetable waste: lab-scale and pilot-scale studies.
abstract: The anaerobic digestion performances of kitchen waste (KW) and fruit/vegetable waste (FVW) were investigated for establishing engineering digestion system. The study was conducted from lab-scale to pilot-scale, including batch, single-phase and two-phase experiments. The lab-scale experimental results showed that the ratio of FVW to KW at 5:8 presented higher methane productivity (0.725 L CH4/g VS), and thereby was recommended. Two-phase digestion appeared to have higher treatment capacity and better buffer ability for high organic loading rate (OLR) (up to 5.0 g(VS) L(-1) d(-1)), compared with the low OLR of 3.5 g(VS) L(-1) d(-1) for single-phase system. For two-phase digestion, the pilot-scale system showed similar performances to those of lab-scale one, except slightly lower maximum OLR of 4.5 g(VS) L(-1) d(-1) was allowed. The pilot-scale system proved to be profitable with a net profit of 10.173$/ton as higher OLR (⩾ 3.0 g(VS) L(-1) d(-1)) was used.
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
authors.forename: Long
authors.initials: L
authors.lastname: Wang
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China; Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.
authors.forename: Fei
authors.initials: F
authors.lastname: Shen
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
authors.forename: Hairong
authors.initials: H
authors.lastname: Yuan
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
authors.forename: Dexun
authors.initials: D
authors.lastname: Zou
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
authors.forename: Yanping
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
authors.forename: Baoning
authors.initials: B
authors.lastname: Zhu
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China. Electronic address: xjlibuct@gmail.com.
authors.forename: Xiujin
authors.initials: X
authors.lastname: Li
mesh_terms: D000693:Anaerobiosis; D019149:Bioreactors / Q000191:economics; D005638:Fruit / Q000737:chemistry; D008697:Methane / Q000032:analysis; D012037:Refuse Disposal / Q000191:economics / Q000379:methods*; D062611:Solid Waste / Q000032:analysis*; D014675:Vegetables / Q000737:chemistry
chemical_list: D062611:Solid Waste; D008697:Methane
keywords: Co-digestion; Fruit/vegetable waste; Kitchen waste; Pilot scale; Profit analysis