Sources and remediation techniques for mercury contaminated soil.
Sources and remediation techniques for mercury contaminated soil.
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DOI：
10.1016/j.envint.2014.09.007
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发表时间：
2015
影响因子：
11.8
通讯作者：
Jingying Xu;A. Bravo;A. Lagerkvist;S. Bertilsson;R. Sjöblom;J. Kumpiene
中科院分区：
文献类型：
--
作者：
Jingying Xu;A. Bravo;A. Lagerkvist;S. Bertilsson;R. Sjöblom;J. Kumpiene
近年来，土壤中的汞（Hg）增加了3至10倍，这主要是由于化石燃料的燃烧以及远距离大气输送过程。其他来源，如氯碱厂、金矿和水泥生产，也可能是重要的，至少在当地是这样。本文综述了导致土壤中汞浓度升高的自然和人为来源，并对控制土壤汞污染的主要修复技术及其应用进行了综述。重点是土壤洗涤、稳定/固化、热处理和生物技术；还讨论了影响汞在土壤中移动的因素，因此对评估和优化修复技术至关重要。鼓励生物修复的进一步研究，未来的研究应侧重于在野外条件下实施不同的修复技术。
Mercury (Hg) in soils has increased by a factor of 3 to 10 in recent times mainly due to combustion of fossil fuels combined with long-range atmospheric transport processes. Other sources as chlor-alkali plants, gold mining and cement production can also be significant, at least locally. This paper summarizes the natural and anthropogenic sources that have contributed to the increase of Hg concentration in soil and reviews major remediation techniques and their applications to control soil Hg contamination. The focus is on soil washing, stabilisation/solidification, thermal treatment and biological techniques; but also the factors that influence Hg mobilisation in soil and therefore are crucial for evaluating and optimizing remediation techniques are discussed. Further research on bioremediation is encouraged and future study should focus on the implementation of different remediation techniques under field conditions.