Stabilization of heavy metal-contaminated soils by biochar: Challenges and recommendations
Stabilization of heavy metal-contaminated soils by biochar: Challenges and recommendations
复制标题
生物炭稳定重金属污染土壤：挑战和建议
DOI：
10.1016/j.scitotenv.2020.139060
复制
发表时间：
2020-08-10
影响因子：
9.8
通讯作者：
Chen, Runhua
中科院分区：
文献类型：
--
作者：
Wang, Yangyang;Liu, Yidan;Chen, Runhua
近年来，各种类型的生物炭被广泛用于修复土壤重金属污染，降低重金属在土壤中的迁移性和生物有效性。大多数研究者关注了生物炭在修复过程中的有益作用，但很少有人强调其负面影响及其应用面临的挑战。本文综述了生物炭在土壤重金属污染修复中的负面效应和挑战，包括生物炭的特性变化、生物炭的过量施用、生物炭中的有毒物质、生物炭对土壤重金属的活化、非特异性吸附以及生物炭对土壤微生物和植物的负面影响。此外，还提出了今后的研究方向和建议（标准化、长期田间试验、机理研究和设计生物炭），以使生物炭在修复HM污染土壤中的大规模应用成为可能。(C)2020爱思唯尔B.V.保留所有权利。
Various types of biochar have beenwidely used to remediate soil contamination fromheavy metals (HMs) and to reduce HM mobility and bioavailability in soils in recent years. Most researchers have paid attention to the beneficial effects of biochar during the remediation process, but few have emphasized their negative effects and the challenges for their application. In this review, the negative effects and challenges of applying biochar for the remediation of HM-contaminated soils are thoroughly summarized and discussed, including the changeable characteristics of biochar, biochar over-application, toxic substances in biochar, activation of some HMs in soils by biochar, nonspecific adsorption, and the negative influences of biochar on soilmicroorganisms and plants. In addition, further research directions and several recommendations (standardization, long-term field experiments, mechanisms research and designer biochars) were also proposed to enable the large-scale application of biochar for the remediation of HM-contaminated soils. (C) 2020 Elsevier B.V. All rights reserved.