EXTRACTION AND RECOVERY OF LEAD SPECIES FROM SOIL

被引：16

作者：

KRISHNAMURTHY, S

机构：

[1] U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, Edison, New Jersey

来源：

ENVIRONMENTAL PROGRESS | 1992年 / 11卷 / 04期

关键词：

D O I：

10.1002/ep.670110411

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The remediation of lead contaminated soil at Superfund sites and urban soil is a serious concern, given the grave effects of lead exposure and the pervasive nature of the threat. The lead species of interest are elemental lead, lead sulfate, basic carbonate of lead and lead dioxide. This paper describes work done to solubilize these species and recover the contaminants as salable lead sulfate. Proof of concept was done using the pure chemicals. After this, bench scale experiments were done using a soil that was dosed with varying amounts of the contaminants (total lead from 1,000 to 10,000 ppm) and better than 80% of the contaminants was recovered as lead sulfate. The treated soil passed the TCLP test with 3.0 ppm lead, showing that it could be be redeposited on site. A pilot-plant scale-up is being explored.

引用

页码：256 / 260

页数：5