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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