络合剂淋洗Cu污染粉土的土柱试验研究

以当前我国备受关注的土体污染为背景,通过土柱试验研究了不同络合剂对Cu的淋洗效果,结果表明:乙二胺四乙酸二钠二水合物(ethylenediaminetetraacetic acid disodium saltdihydrate,EDTA)淋洗效果最佳,柠檬酸(citric acid,CIT)次之,氨三乙酸三钠盐单水合物(nitrilotriacetic acid trisodium salt monohydrate,NTA)淋洗效果相对最差;使用不同浓度的EDTA淋洗负载量为150 mg/kg的Cu污染土,浓度增大并未有效促进Cu的解吸,而较小浓度(0.005 mol/L)的EDTA是有效且经...

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Bibliographic details
Volume: 45
Main Author: 金依婷;王艳;李轲轲;王恒宇
Format: Journal Article
Language: Chinese
Place of publication: 宁波大学建筑工程与环境学院,浙江宁波,315211%浙江大学宁波理工学院,浙江宁波,315100 2018
published in: 水文地质工程地质 Vol. 45; no. 2; pp. 165 - 170
Data of publication: 2018
ISSN: 1000-3665
Alternate Title: A study of soil column experiments for copper contaminated silt flushed by chelating agents
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Bibliography: JIN Yiting1 , WANG Yah1, LI Keke1 , WANG Hengyu2 (1. Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, Zhejiang 315211, China; 2. Ningbo Institute of Technology, Zhefiang University, Ningbo, Zhefiang 315100, China)
contaminated silt ; heavy metal; chelating agent ; flush ; soil column
Great attention has been paid to soil contamination in China. Therefore,a series of soil column experiments were conducted to examine the removal behavior of copper from silty soil flushed with different chelating agents. The results indicate that the removal efficiency of copper was different when using different chelating agents the efficiency is in the order of EDTA CIT NTA. The increasing EDTA concentration was not effective in promoting copper removal. 0. 005 mol/L of EDTA is an effective and economic concentration and the removal ratio can reach 84%. When the concentration of EDTA is 0. 015 mol/L,the removal ratio of copper decreases with the increasing concentration of copper in silt,an
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