title: Characterization and energy potential of food waste from catering service in Hangzhou, China.
abstract: Safe disposal of food waste is becoming an impending issue in China with the rapid increase of its production and the promotion of environmental awareness. Food waste from catering services in Hangzhou, China, was surveyed and characterized in this study. A questionnaire survey involving 632 units across the urban districts showed that 83.5% of the food waste was not properly treated. Daily food waste production from catering units was estimated to be 1184.5 tonnes. The ratio of volatile solid to total solid, easily biodegradable matter (including crude fat, crude protein and total starch) content in total solid and the ratio of total organic carbon to nitrogen varied in ranges of 90.1%-93.9%, 60.9%-72.1%, and 11.9-19.9, respectively. Based on the methane yield of 350 mL g VS(-1) in anaerobic batch tests, annual biogas energy of 1.0 × 10(9) MJ was estimated to be recovered from the food waste. Food waste from catering services was suggested to be an attractive clean energy source by anaerobic digestion.
authors: College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China.
authors: Xiao-Hui
authors: XH
authors: Guo
authors: College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China.
authors: Fa-Qian
authors: FQ
authors: Sun
authors: Solid Waste Management Center of Zhejiang, Hangzhou, China.
authors: Ying-Jun
authors: YJ
authors: Sun
authors: College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China hhlu1026@zju.edu.cn.
authors: Hao-Hao
authors: HH
authors: Lu
authors: College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China.
authors: Wei-Xiang
authors: WX
authors: Wu
mesh_terms: D002681:China; D003246:Conservation of Energy Resources; D005523:Food Supply; D012037:Refuse Disposal; D062611:Solid Waste / Q000032:analysis*; D011795:Surveys and Questionnaires
chemical_list: D062611:Solid Waste
keywords: Anaerobic digestion; catering services; characteristics; food waste; recoverable energy