Turnover and loss of nitrogenous compounds during composting of food wastes

作     者：Yanmei YANG Xiangfeng ZHANG Zhifeng YANG Beidou XI Hongliang LIU 

作者机构：College of River and Ocean EngineeringChongqing Jiaotong UniversityChongqing 400074China State Key Joint Laboratory of Environmental Simulation and Pollution ControlSchool of EnvironmentBeijing Normal UniversityBeijing 100875China Chinese Research Academy of Environmental SciencesBeijing 100012China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2008年第2卷第2期

页      面：251-256页

核心收录：

学科分类：090101[农学-作物栽培学与耕作学] 09[农学] 0901[农学-作物学] 

基　　金：The research was supported by Natural Science Foundation Project of Chongqing Science and Technology Commission(CQ CSTC)(Grant No.2007BB7423) National Basic Research Program of China(Grant No.2005 CB724203) Academic Research Start-up Foundation for Doctor of Chongqing Jiaotong University,and Experiment Teaching Reform and Research of Chongqing Jiaotong University,China 

主　　题：composting nitrogen transformation nitrogen loss ammonia volatilization 

摘      要：Few people have so far explored into the research of the dynamics of various nitrogenous compounds(including water-soluble nitrogen)in composting of food *** study aimed to investigate the solid-phase nitrogen,water-soluble nitrogen,nitrogen loss together with ammonia volatilization in the process of food wastes composting.A laboratory scale static aerobic reactor in the experiment was employed in the composting process of a synthetic food waste,in which sawdust was used as the litter *** the experiment,oxygen was supplied by continuous forced ventilation for 15 *** results have shown that the concentrations of total nitrogen and organic nitrogen decrease significantly in the composting process,whereasNH_(4)^(+)-N concentration increases together with little fluctuation in NO_(3)^(-)-*** composting,the total content of the water-soluble nitrogen compounds in the compost greatly increased,the total nitrogen loss amounted to 50% of the initial nitrogen,mainly attributed to ammonia volatilization.56.7% of the total ammonia volatilization occurred in the middle and late composting of the thermophilic *** suggested that the control at the middle and late composting of thermophilic stage is the key to nitrogen loss in the food waste compost.