Remediation of Chromium‐Containing Soils by Heap Leaching: Column Study
Publication: Journal of Environmental Engineering
Volume 119, Issue 5
Abstract
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%).
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 119 • Issue 5 • September 1993
Pages: 825 - 841
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Jun 11, 1993
Published online: Sep 1, 1993
Published in print: Sep 1993
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