期刊论文

Luo, L.

中文

环境工程学报

1673-9108

2015

9

5

2469-2472

2012BAC09B04:国家科技支撑计划 51104064:国家自然科学基金 201309051:环保部公益基金项目 2013DFG91190:国家国际科技合作专项基金

本校为第一且通讯机构

以湖南郴州东江湖风景区矿区遗留地重金属污染土壤为研究对象,研究了3种含P材料,及其与蒙脱石的组合材料,对矿区土壤铅镉污染的修复效果。实验设6组处理,分别为P1组、P2组、P3组、P1 +M组、P2 + M组、P3+M组,通过添加5%的稳定剂,稳定2d后,分析土壤中铅镉的形态变化。实验结果表明:添加含P材料,及组合材料后,土壤中铅镉的离子交换态、铁锰结合态、有机结合态大幅度降低,残渣态显著升高。对Pb离子转化效果均在90.00%以上,Cd离子的转化效率相对较差,最优P1处理效果为74.20%。离子交换态的减少,有效地降低了重金属的生物有效性,有效地降低了环境风险。同时,含P材料均增加了土壤有效磷的含量,对矿区土...

The experiment was conducted to study the repairing effect of three kinds of phosphorus-bearing materials and their combinations with montmorillonite on the heavy metal contaminated soil from the mineral field in Dongjiang Lake resort (Chenzhou, Hunan Province).Six treatments were conducted by adding 5% of stabilizers and different contents of phosphorus-bearing materials to soils (i.e. P1, P2, P3, P1+M, P2+M, P3+M). The morphology of lead and cadmium in the soil with different treatments was analyzed after two day's stabilization. The results ...