title: Effects of the feeding ratio of food waste on fed-batch aerobic composting and its microbial community.
abstract: To determine the suitable feeding ratio for fed-batch aerobic composting, four fermenters were operated by adding 0%, 5%, 10% or 15% of food waste every day. The results showed that the 5% and 10% treatments were able to maintain continuous thermophilic conditions, while the 15% treatment performed badly in regard to composting temperature, which was probably due to the negative effects of excessive moisture on microbial activity. As composting proceeded, both the 5% and the 10% treatments reached maturity and achieved weight losses of approximately 65%. High-throughput sequencing results indicated that Firmicutes, Proteobacteria, Bacteroidetes and Actinobacteria were the dominant phyla of the community structure. The communities sampled at the thermophilic phases had high similarity and relatively low diversity, while species diversity increased in the maturity phase. This study was devoted to optimizing the fed-batch composting process and assessing bacterial communities, both of which were supplied as a reference for practical application.
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: xjwang@iue.ac.cn.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: songqing_pan@fpi-inc.com.
authors.forename: Songqing
authors.initials: S
authors.lastname: Pan
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: zjzhang@iue.ac.cn.
authors.forename: Zhaoji
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: xylin@iue.ac.cn.
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Lin
authors.affiliation: Fujian Research Academy of Environmental Sciences, Environmental Protection Bureau of Fujian Province, Fuzhou 350003, China. Electronic address: zyz9893@163.com.
authors.forename: Yuzhen
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: shchen@iue.ac.cn.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Chen
mesh_terms: D039903:Actinobacteria; D000332:Aerobiosis; D001419:Bacteria / Q000378:metabolism; D061249:Batch Cell Culture Techniques / Q000379:methods*; D019149:Bioreactors / Q000382:microbiology; D016000:Cluster Analysis; D005502:Food; D006813:Humidity; D009821:Oils / Q000032:analysis; D010802:Phylogeny; D012987:Soil; D012988:Soil Microbiology; D013696:Temperature; D014866:Waste Products / Q000032:analysis*
chemical_list: D009821:Oils; D012987:Soil; D014866:Waste Products
keywords: Fed-batch aerobic composting; Feeding ratio; Food waste; Microbial community; Operating strategy