生物炭
木屑
肥料
温室气体
污水污泥
化学
鸡粪
稻草
环境科学
堆肥
微塑料
废物管理
制浆造纸工业
农学
环境化学
污水处理
热解
环境工程
生物
无机化学
生态学
有机化学
工程类
作者
Yanting Zhou,Haoran Zhao,Zonghui Lu,Xiuna Ren,Zengqiang Zhang,Quan Wang
标识
DOI:10.1016/j.biortech.2023.129556
摘要
This study aimed to investigate the effects of biochar derived from different sources (wheat straw, sawdust and pig manure) on greenhouse gas and microplastics (MPs) mitigation during sewage sludge composting. Compared to the control, all biochar significantly reduced the N2O by 28.91–41.23%, while having no apparent effect on CH4. Sawdust biochar and pig manure biochar significantly reduced the NH3 by 12.53–23.53%. Adding biochar decreased the global warming potential during composting, especially pig manure biochar (177.48 g/kg CO2-eq.). The concentration of MPs significantly increased in the control (43736.86 particles/kg) compared to the initial mixtures, while the addition of biochar promoted the oxidation and degradation of MPs (15896.06–23225.11 particles/kg), with sawdust biochar and manure biochar were more effective. Additionally, biochar significantly reduced the abundance of small-sized (10–100 μm) MPs compared to the control. Moreover, biochar might regulate specific microbes (e.g., Thermobifida, Bacillus and Ureibacillus) to mitigate greenhouse gas emissions and MPs degradation.
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