文章基本信息

标题：The different faces of biochar: contamination risk versus remediation tool
本地全文：下载
作者：Isabel Hilber ; Ana Catarina Bastos ; Susana Loureiro 等
期刊名称：Journal of Environmental Engineering and Landscape Management
印刷版ISSN：1648-6897
电子版ISSN：1822-4199
出版年度：2017
卷号：25
期号：2
页码：86-104
DOI：10.3846/16486897.2016.1254089
语种：English
出版社：Taylor & Francis Group
摘要：This article reviews the different aspects of biochar as source and sink of organic and inorganic contaminants. Biochar can contain organic contaminants such as polycyclic aromatic hydrocarbons or heavy metals. As the distribution coefficients of the biochar especially for contaminants are high, the freely dissolved concentrations are low and with that also the bioavailability. The link between biochar’s inherent contaminants and toxicity to soil meso– and macro–fauna remains unclear, with data being often contradictory and influenced by feedstock and pyrolysis conditions. The biochar’s potential to remediate contaminated soils has mainly been addressed in lab studies, but rarely in the field. This far, results have been contradicting. Many studies reported successful immobilization of contaminants but some not. In summary, the ambivalent face of the biochar with regard to contaminants prevails. In future, long term field studies are needed to properly address the sustainability of biochar in this...
关键词：biochar inherent organic and inorganic contaminants; bioavailability; bioaccessibility; ecotoxicity; environmental risks