Liu Jiwei, Sun Shuyu, Zhang Huanxin, Kong Qiang, Li Qian, Yao Xudong
College of Geography and Environment, Shandong Normal University, Jinan, Shandong, 250014, China.
College of Geography and Environment, Shandong Normal University, Jinan, Shandong, 250014, China.
Environ Res. 2023 Nov 15;237(Pt 1):116918. doi: 10.1016/j.envres.2023.116918. Epub 2023 Aug 22.
Hexavalent chromium is a toxic metal that can induce severe chromium contamination of soil, posing a potential risk to human health and ecosystems. In recent years, the immobilization of Cr(VI) using remediation materials including inorganic materials, organic materials, microbial agents, and composites has exhibited great potential in remediating Cr(VI)-contaminated soil owing to the environmental-friendliness, short period, simple operation, low cost, applicability on an industrial scale, and high efficiency of these materials. Therefore, a systematical summary of the current progress on various remediation materials is essential. This work introduces the production (sources) of remediation materials and examines their characteristics in detail. Additionally, a critical summary of recent research on the utilization of remediation materials for the stabilization of Cr(VI) in the soil is provided, together with an evaluation of their remediation efficiencies toward Cr(VI). The influences of remediation material applications on soil physicochemical properties, microbial community structure, and plant growth are summarized. The immobilization mechanisms of remediation materials toward Cr(VI) in the soil are illuminated. Importantly, this study evaluates the feasibility of each remediation material application for Cr(VI) remediation. The latest knowledge on the development of remediation materials for the immobilization of Cr(VI) in the soil is also presented. Overall, this review will provide a reference for the development of remediation materials and their application in remediating Cr(VI)-contaminated soil.
六价铬是一种有毒金属，会导致土壤受到严重的铬污染，对人类健康和生态系统构成潜在风险。近年来，使用包括无机材料、有机材料、微生物制剂和复合材料在内的修复材料固定Cr(VI)，由于这些材料具有环境友好、周期短、操作简单、成本低、适用于工业规模以及效率高等特点，在修复Cr(VI)污染土壤方面展现出了巨大潜力。因此，系统总结各种修复材料的当前进展至关重要。本文介绍了修复材料的产生（来源）并详细研究了它们的特性。此外，还对近期利用修复材料稳定土壤中Cr(VI)的研究进行了批判性总结，并评估了它们对Cr(VI)的修复效率。总结了修复材料应用对土壤理化性质、微生物群落结构和植物生长的影响。阐明了修复材料对土壤中Cr(VI)的固定机制。重要的是，本研究评估了每种修复材料应用于Cr(VI)修复的可行性。还介绍了用于固定土壤中Cr(VI)的修复材料开发的最新知识。总体而言，本综述将为修复材料的开发及其在修复Cr(VI)污染土壤中的应用提供参考。
