吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (1): 240-246.doi: 10.13278/j.cnki.jjuese.20190155

• 地质工程与环境工程 • 上一篇    

改性Mg(OH)2对多种重金属污染土壤的修复效果

赵文晋, 高淼, 鹿豪杰, 任黎明, 马冠群, 董军   

  1. 吉林大学新能源与环境学院, 长春 130021
  • 收稿日期:2019-08-05 发布日期:2021-02-02
  • 通讯作者: 董军(1976-),男,教授,博士,主要从事地下水污染模拟、控制与修复、土壤污染修复技术方面的研究,E-mail:dongjun@jlu.edu.cn E-mail:dongjun@jlu.edu.cn
  • 作者简介:赵文晋(1973-),男,教授,主要从事环境规划与评价方面的研究,E-mail:zhaowj@jlu.edu.cn
  • 基金资助:
    国家自然科学基金项目（41772241）

Remediation Effect of Modified Mg(OH)2 on Soil Contaminated by Multiple Heavy Metals

Zhao Wenjin, Gao Miao, Lu Haojie, Ren Liming, Ma Guanqun, Dong Jun   

  1. College of New Energy and Environment, Jilin University, Changchun 130021, China
  • Received:2019-08-05 Published:2021-02-02
  • Supported by:
    Supported by the National Natural Science Foundation of China (41772241)

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摘要： 为了研究一种高效的多种重金属污染土壤修复剂，本文采用了一种具有OH-缓释功能的改性Mg（OH）2，通过重金属污染土壤稳定化修复实验，探讨了改性Mg（OH）2对污染土壤中多种重金属（Pb、Cd、Cu、Zn）的稳定效率及对多种重金属形态分布的影响。结果表明，投加改性Mg（OH）2对土壤中多种重金属均有稳定作用，对Pb、Cd、Cu、Zn的稳定效率分别为72.42%、34.53%、87.64%和97.65%，且改性Mg（OH）2的投加使重金属交换态质量明显减少、残渣态质量增加，进一步提高了重金属的稳定性，降低了重金属生物有效性；另外，改性Mg（OH）2具有OH-缓释性，可使土壤长期保持一定的碱性，是一种经济有效的土壤修复剂。

关键词: 土壤污染, 重金属, 改性Mg(OH)2, 土壤修复剂

Abstract: In order to find a highly effective remediation agent for soils contaminated by multiple heavy metals, the modified Mg (OH)2 with OH- sustained release function was studied. Through the experiment of stabilization and remediation of heavy metals contaminated soil,the modified Mg(OH)2 stabilization efficiency for multiple heavy metals (lead, cadmium, copper, zinc) in polluted soil and its influence on the form distribution of the multiple heavy metals were studied. The results show that the addition of modified Mg(OH)2 has a stabilizing effect on various heavy metals in soil, and the stabilizing efficiencies for lead, cadmium, copper and zinc are 72.42%, 34.53%, 87.64%,and 97.65%, respectively. Moreover, the modified Mg (OH)2 can significantly reduce the content of exchanged heavy metal states and increase the content of residue states, which can further improve the stability of heavy metals and reduce the bioavailability of heavy metals. In addition, the modified Mg(OH)2 has the characteristics of sustained-release of OH-, which can keep the soil alkaline for a long time,thus the modified Mg(OH)2 is a long-term effective soil remediation agent.

Key words: soil pollution, heavy metals, modified Mg(OH)2, remediation

中图分类号: 

  • X53
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