多金属污染农田土壤固化/稳定化修复研究进展

Advances in immobilization/stabilization remediation in situ for heavy metal contaminated farmland soils

固化/稳定化剂修复农田土壤重金属污染简单易行、成本低廉且不破坏土壤结构,但不同的固化/稳定化剂对土壤、作物及重金属离子的修复效果各不相同。文章概述了几种固化/稳定化剂的修复效果及优缺点,探讨了固化/稳定化修复重金属污染的作用机制以及影响重金属固化/稳定化修复效果的主要因素,分析了固化/稳定化修复农田土壤重金属污染的局限性,并从不同角度提出了今后的发展方向。

The immobilization/stabilization agents for remediation of soil in farmland contaminated by heavy metals hawe been characterized by simple convenient and low cost material that does not destroy the structure of soil, but different agents had different remediation effects on soil, crops and heavy metal ions. The remediation effects, advantages and disadvantages of several kinds of immobilization/stabilization agents were summarized in the paper, and the functional mechanism of immobilization/stabilization remediation and main factors on affecting the remediation by immobilization/stabilization agents have been discussed. The limitation of immobilization/stabilization agents on remediation of soil in farmland contaminated by heavy metals have also been analyzed. The present developments and future directions have been discussed.