Feasibility of extracting lead from lead battery recycling site soil using high‐concentration chloride solutions
Feasibility of extracting lead from lead battery recycling site soil using high‐concentration chloride solutions
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DOI：
10.1002/ep.670190312
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发表时间：
2000-09
期刊：
影响因子：
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通讯作者：
T. Nedwed;D. Clifford
中科院分区：
文献类型：
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作者：
T. Nedwed;D. Clifford
本文介绍了用4 - 6 M氯化物溶液（pH 4）去除土壤中铅的技术研究。本文研究了两种土壤：（1）高粉土、高粘土、铅蓄电池回收场（LBRS）土壤和（2）高砂土。测试确定，使用氯化物溶液的分批提取过程将高淤泥、高粘土土壤中的铅从67，400毫克/公斤减少到1，500 - 2，000毫克/公斤，将高沙土中的铅从14，400毫克/公斤减少到600毫克/公斤。两种处理过的土壤都通过了EPA的毒性特征渗滤液程序测试。此外，在从高淤泥、高粘土土壤中去除铅方面，浓氯化物溶液与EDTA和HCl一样有效。氯化物溶液去除铅的能力与EDTA一样有效，同时提供容易回收的氯化物络合的铅，说明了该方法的可行性。
This paper describes research on a technique for removing lead from soil using 4 -6 M chloride solutions at pH 4. Two soils we re studied in this work: (1) a high-silt, highclay, lead battery recycling site (LBRS) soil and (2) a highsand LBRS soil. Testing determined that a batch-extraction process using chloride solutions reduced the lead in the high-silt, high-clay soil from 67,400 to 1,500–2,000 mg/kg and in the high-sand soil from 14,400 to 600 mg/kg. Both treated soils passed the EPA's Toxicity Characteristic Leachate Procedure test. In addition, concentrated chloride solutions we re as effective as both EDTA and HCl at removing lead from the high-silt, high-clay soil. The ability of chloride solutions to remove lead as efficiently as EDTA while providing easy recovery of the chloride-complexed lead illustrates the viability of the process.