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硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比

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何昶, 曾清如, 唐忠波, 王华, 廖柏寒. 硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比[J]. 环境化学, 2008, 27(4): 507-510.
引用本文: 何昶, 曾清如, 唐忠波, 王华, 廖柏寒. 硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比[J]. 环境化学, 2008, 27(4): 507-510.
shu
He Chang, Zeng Qingru, Tang Zhongbo, Wang Hua, Liao Bohan. EXTRACTING OF HEAVY METALS FROM CONTAMINATED SOIL WITH Na2S2O3 SOLUTION AND COMPARISON OF THEIR RECOVERY TECHNIQUE[J]. Environmental Chemistry, 2008, 27(4): 507-510.
Citation: He Chang, Zeng Qingru, Tang Zhongbo, Wang Hua, Liao Bohan. EXTRACTING OF HEAVY METALS FROM CONTAMINATED SOIL WITH Na2S2O3 SOLUTION AND COMPARISON OF THEIR RECOVERY TECHNIQUE[J]. Environmental Chemistry, 2008, 27(4): 507-510.
shu

硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比

  • 1.

    湖南农业大学资源环境学院, 长沙, 410128

  • 基金项目:

    湖南省科技计划项目(2006SK4026)资助

EXTRACTING OF HEAVY METALS FROM CONTAMINATED SOIL WITH Na2S2O3 SOLUTION AND COMPARISON OF THEIR RECOVERY TECHNIQUE

  • 1.

    College of Resource and Environment, Hunan Agricultural University, Changsha, 410128, China

  • Fund Project:

  • 摘要: 研究了Na2S2O3溶液对污染土壤中Cu, Cd和Pb的去除能力, 以及Na2S2O3萃取这三种金属分离技术的对比. 结果表明, Na2S2O3溶液能有效地从土壤中萃取这三种金属, 其萃取效率依次为:Cu>Cd>Pb. Na2S沉淀分离法和阳离子交换树脂交换法均能分离出Na2S2O3萃取液中的Cu和Cd, 去除率均达99%. 但用Na2S2O3溶液萃取碱性土壤中的重金属时, 阳离子交换树脂交换法分离重金属的效果较好, 萃取酸性土壤中的重金属则用Na2S沉淀分离法效果较好.
    Abstract: The removal efficiency of Cu, Cd, and Pb from contaminated soils by Na2S2O3 and the technique of heavy metals separating in Na2S2O3 solution were studied. The results indicated that Na2S2O3 solution could effectively extract the heavy metals in soil and the extractable percentage of metals followed the sequence of Cu>Cd>Pb. Both Na2S and cation exchange resin could separate Cu, Cd in Na2S2O3 solution with efficiency up to 99%.However, separation heavy metals from Na2S2O3 extraction of the alkali soil, incorporating the exchange resin technique, was better than that by the Na2S precipitation method.
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  • [1] 周启星, 土壤环境污染化学与化学修复研究最新进展.环境化学, 2006, 25(3):257-265
    [2] Wassay S A, Barrington S F, Tokunaga S, Organic Acids for the in Situ Remediation of Soils Polluted by Metals:Soil Flushing in Columns[J].Water, Air and Soil Pollution, 2001, 127:301-314
    [3] Elliott H A, Brown G A, Comparative Evaluating of NTA and EDTA for Extractive Decontamination of Pb-Polluted Soils[J].Water, Air and Soil Pollution, 1989, 45:361-369
    [4] Papassiopi N, Tambouris S, Kontopoulos A, Removal of Heavy Metals from Calcareous Contaminated Soils by EDTA leaching[J].Water, Air and Soil Pollution, 1999, 109:1-15
    [5] 刘玉荣, 党志, 尚爱安, 几种萃取剂对土壤中重金属生物有效部分的萃取效果.土壤与环境, 2002, 11(3):245-247


    [6] Tejowulan R S, Hendershot W H, Removal of Trace Metals from Contaminated Soils Using EDTA Incorporating Resin Trapping Techniques[J].J.Environmental Pollution, 1998, 103:135-142

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  • 收稿日期:  2007-09-19
  • 刊出日期:  2008-08-15
何昶, 曾清如, 唐忠波, 王华, 廖柏寒. 硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比[J]. 环境化学, 2008, 27(4): 507-510.
引用本文: 何昶, 曾清如, 唐忠波, 王华, 廖柏寒. 硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比[J]. 环境化学, 2008, 27(4): 507-510.
shu
He Chang, Zeng Qingru, Tang Zhongbo, Wang Hua, Liao Bohan. EXTRACTING OF HEAVY METALS FROM CONTAMINATED SOIL WITH Na2S2O3 SOLUTION AND COMPARISON OF THEIR RECOVERY TECHNIQUE[J]. Environmental Chemistry, 2008, 27(4): 507-510.
Citation: He Chang, Zeng Qingru, Tang Zhongbo, Wang Hua, Liao Bohan. EXTRACTING OF HEAVY METALS FROM CONTAMINATED SOIL WITH Na2S2O3 SOLUTION AND COMPARISON OF THEIR RECOVERY TECHNIQUE[J]. Environmental Chemistry, 2008, 27(4): 507-510.
shu

硫代硫酸钠溶液修复重金属污染土壤的两种回收技术对比

  • 1. 湖南农业大学资源环境学院, 长沙, 410128
  • 收稿日期:  2007-09-19
基金项目:

湖南省科技计划项目(2006SK4026)资助

摘要: 研究了Na2S2O3溶液对污染土壤中Cu, Cd和Pb的去除能力, 以及Na2S2O3萃取这三种金属分离技术的对比. 结果表明, Na2S2O3溶液能有效地从土壤中萃取这三种金属, 其萃取效率依次为:Cu>Cd>Pb. Na2S沉淀分离法和阳离子交换树脂交换法均能分离出Na2S2O3萃取液中的Cu和Cd, 去除率均达99%. 但用Na2S2O3溶液萃取碱性土壤中的重金属时, 阳离子交换树脂交换法分离重金属的效果较好, 萃取酸性土壤中的重金属则用Na2S沉淀分离法效果较好.

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