Extraction of heavy metals from a contaminated soil by reusing chelating agent solutions

被引：13
|
作者：
Mohamed, Mahmoud Ahmed [1 ]
Efligenir, Anthony [1 ]
Husson, Jerome [1 ]
Persello, Jacques [2 ]
Fievet, Patrick [1 ]
Fatin-Rouge, Nicolas [1 ]
机构：
[1] Univ Franche Comte Besancon, Inst UTINAM, UMR CNRS 6213, 16 Route Gray, F-25030 Besancon, France
[2] Univ Nice, LPMC, F-06108 Nice, France
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2013年 / 1卷 / 03期
关键词：
Soil remediation; Metal extraction; Ligand recovery;
D O I：
10.1016/j.jece.2013.05.015
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
We have studied ion-exchange in order to reuse aqueous solutions of chelating agents for trace-metals extraction from a contaminated soil. Amberlite IRC 748 resin was used to remove Cu2+, Ni2+ and Pb2+ from chelates in soil extracts and recover the chelating agents for reuse. Several ligands were studied for recovery, metal extraction efficiency and selectivity during successive washing cycles in column experiments. The results showed that the reused extracting solutions made with IDSA (iminodisuccinic acid) kept their extraction efficiency after 4-runs. No loss of ligand was detected, while metal extractions ranged between 80 and 97% at pH 7.0-7.6. (C) 2013 Elsevier Ltd All rights reserved.
引用
收藏
页码：363 / 368
页数：6
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