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Zn/Cd污染土壤的化学钝化修复

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Indexed by:期刊论文

Date of Publication:2008-02-15

Journal:土壤

Included Journals:PKU、ISTIC、CSCD

Volume:40

Issue:1

Page Number:78-82

ISSN No.:0253-9829

Key Words:重金属;化学修复;凹凸棒石;表面改性

Abstract:本文研究了天然凹凸棒石和改性凹凸棒石(凹+Fe、凹+Mn、凹+P)对Zn/Cd模拟污染土壤的修复效果.在土壤中添加改良剂20 g/kg土,进行黑麦草盆栽试验.采用植物吸收和化学提取来评价修复效果.植物吸收结果表明凹+P处理效果最好,其原因可能是形成氢氧化物或磷酸盐沉淀;化学提取实验结果表明凹凸棒石可在一定程度上降低弱交换态Zn的含量.

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