Effect of moisture content, aeration rate, and C/N on maturity and gaseous emissions during kitchen waste rapid composting
文献类型: 外文期刊
第一作者: Tang, Ruolan
作者: Tang, Ruolan;Liu, Yan;Ma, Ruonan;Zhang, Lanxia;Li, Yanming;Li, Guoxue;Yuan, Jing;Li, Guoxue;Yuan, Jing;Wang, Dingmei;Lin, Jiacong;Li, Qinfen
作者机构:
关键词: Composting; Kitchen waste; Process parameters; Maturity; Gaseous emissions
期刊名称:JOURNAL OF ENVIRONMENTAL MANAGEMENT ( 影响因子:8.91; 五年影响因子:8.549 )
ISSN: 0301-4797
年卷期: 2023 年 326 卷
页码:
收录情况: SCI
摘要: To determine factors affecting compost maturity and gaseous emissions during the rapid composting of kitchen waste, an orthogonal test was conducted with three factors: moisture content (MC) (55%, 60%, 65%), aeration rate (AR) (0.3,0.6 and 0.9 L.kg(-1)DM.min(-1)) and C/N ratio (21, 24, 27). The results showed that the importance of factors affecting compost maturity was: C/N > AR > MC, optimal conditions were: C/N of 24, AR of 0.3 L.kg(-1)DM.min(-1)and MC of 65%. For gaseous emissions, the sequence of essential factors affecting NH3 emissions was: C/N > MC > AR, and the optimal parameters for NH3 reduction were: C/N of 27, MC of 65%, and AR of L.kg(-1)DM.min(-1). The important factors affecting N2O and H2S emissions are both: MC > C/N > AR, while their best parameters were different. The optimal parameters for N2O emission reduction were MC of 60%, AR of 0.3 L.kg(-1)DM.min(-1) and C/N of 24, while these for H2S were MC of 55%, AR of 0.3 L.kg(-1)DM.min(-1) and C/N of 21. The C/N mainly affected the compost maturity and AR further affected the maturity and pollutant gas emissions by influencing the temperature and O-2 content. Considering comprehensively the maturity and gaseous reduction, the optimal control parameters were: MC of 60%-65%, AR of L.kg(-1)DM.min(-1), and C/N of 24-27.
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