化工环保2017，Vol.37Issue(3)：335-339,5.DOI:10.3969/j.issn.1006-1878.2017.03.015
铬污染土壤处理中的铬含量及形态变化
Content and speciation changes of chromium in treatment of contaminated soil
陈勇 1王清森 2张浩凡1
作者信息
- 1. 四川大学四川省环境保护土壤环境保护工程技术中心,四川成都610065
- 2. 四川大学川大-日立环境应用技术研究中心,四川成都610065
- 折叠
摘要
Abstract
FeSO4 and Na2S were used as reducing agent to treat the chromium-contaminated purple soil.The content and speciation changes of chromium in the reduction process were studied.The experimental results showed that:When the amount of FeSO4 was 1.5％ (w),the content of leached Cr (Ⅵ)was decreased from (1 745.13 ± 27.93)mg/kg to (17.65 ± 2.28) mg/kg,the content of leached total chromium was decreased from (1 768.83 ± 57.24) mg/kg to (69.79 ± 8.61)mg/kg,and chromium is changed from water soluble carbonate bound state to the stable Fe-Mn bound state;When the amount of Na2S was 1.5％ (w),the content of leached Cr (Ⅵ) was decreased from (1 745.13 ± 27.93)mg/kg to (25.50 ± 0.12) mg/kg,the content of leached total chromium was decreased from (1 768.83 ± 57.24) mg/kg to (410.87 ± 12.83)mg/kg,and chromium is changed from water soluble carbonate bound state to Fe-Mn bound state and organic bound state.关键词
紫色土壤/铬污染/铬形态/水溶+碳酸盐结合态/铁锰结合态/有机结合态Key words
purple soil/chromium pollution/chromium speciation/water soluble carbonate bound state/Fe-Mn bound state/organic bound state分类
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陈勇,王清森,张浩凡..铬污染土壤处理中的铬含量及形态变化[J].化工环保,2017,37(3):335-339,5.
