生物炭
污水污泥
热解
生物量(生态学)
环境科学
废物管理
污水
污水处理
环境化学
污水污泥处理
污染
化学
制浆造纸工业
环境工程
农学
生态学
工程类
生物
作者
Badr A. Mohamed,Roger Ruan,Muhammad Bilal,Nadeem A. Khan,Mukesh Kumar Awasthi,Mahmoud Amer,Lijian Leng,Mohamed A. Hamouda,Dai‐Viet N. Vo,Jian Li
标识
DOI:10.1007/s10311-022-01542-6
摘要
Abstract The huge amounts of sewage sludge produced by municipal wastewater treatment plants induce major environmental and economical issues, calling for advanced disposal methods. Traditional methods for sewage sludge disposal increase greenhouse gas emissions and pollution. Moreover, biochar created from sewage sludge often cannot be used directly in soil applications due to elevated levels of heavy metals and other toxic compounds, which alter soil biota and earthworms. This has limited the application of sewage sludge-derived biochar as a fertilizer. Here, we review biomass and sewage sludge co-pyrolysis with a focus on the stabilization of heavy metals and toxicity reduction of the sludge-derived biochar. We observed that co-pyrolyzing sewage sludge with biomass materials reduced heavy metal concentrations and decreased the environmental risk of sludge-derived biochar by up to 93%. Biochar produced from sewage sludge and biomass co-pyrolysis could enhance the reproduction stimulation of soil biota by 20‒98%. Heavy metals immobilization and transformation are controlled by the co-feed material mixing ratio, pyrolysis temperature, and pyrolysis atmosphere.
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