REMEDIATION OF CHROMIUM-CONTAINING SOILS BY HEAP LEACHING - COLUMN STUDY

被引：25

作者：

HANSON, AT ^{[1
]}

DWYER, B ^{[1
]}

SAMANI, ZA ^{[1
]}

YORK, D ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 1993年 / 119卷 / 05期

关键词：

D O I：

10.1061/(ASCE)0733-9372(1993)119:5(825)

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Efforts are being made to devise technologies and treatment systems to remediate contaminated soil on site without generating significant wastes for off-site disposal. Heap leaching, a technique used extensively in the mining industry, has been investigated as a method for remediation of hazardous metal contamination of the vadose zone. In the mining industry, metal bearing ore is excavated and mounded on a pad. The metals are removed by passing a special leaching solution through the ore. In this study, the removal of Chromium (VI) from four New Mexico soils (sand, sandy loam, and clay) using heap leaching was evaluated at a column scale. The heap leaching study demonstrated greater than 99% removal of Cr(VI), using tap water as the leaching agent. The soils were typical of arid climate soils with low organic content (<1%).

引用

页码：825 / 841

页数：17