生物炭
热解
修正案
斜线和字符
环境化学
土壤水分
环境修复
生物量(生态学)
环境科学
化学
木炭
原材料
污染
农学
土壤科学
生态学
生物
法学
有机化学
政治学
作者
Paulina Godlewska,Yong Sik Ok,Patryk Oleszczuk
标识
DOI:10.1016/j.jhazmat.2020.123833
摘要
Biochar, a product of biomass pyrolysis, is characterized by significant surface area, porosity, high water holding capacity, and environmental persistence. It is perceived as a material that can counteract climate change due to its high carbon stability and is also considered suitable for soil amendment (fertility improvement, soil remediation). However, biochar can have a toxic effect on organisms as harmful substances may be present in it. This paper reviews the literature regarding the current knowledge of harmful substances in biochar and their potential negative impact on organisms from different trophic levels. The effects of biochar on the content and toxicity of harmful substances in biochar-amended soils are also reviewed. Application of biochar into soil does not usually have a toxic effect and very often stimulate plants, bacteria activity and invertebrates. The effect however is strictly determined by type of biochar (especially the feedstock used and pyrolysis temperature) as well as contaminants content. The pH, electrical conductivity, polycyclic aromatic hydrocarbons as well as heavy metals are the main factor usually responsible for biochar toxicity.
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