Chemical precipitation of heavy metals from acid mine drainage

被引：659

作者：

Matlock, MM ^{[1
]}

Howerton, BS ^{[1
]}

Atwood, DA ^{[1
]}

机构：

[1] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

WATER RESEARCH | 2002年 / 36卷 / 19期

基金：

美国国家科学基金会;

关键词：

BDET; acid mine drainage; water treatment; remediation; heavy metals; chemical precipitation; mercury; iron;

D O I：

10.1016/S0043-1354(02)00149-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The 1,3-benzenediamidoethanethiol dianion (BDET, known commercially as MetX) has been developed to selectively and irreversibly bind soft heavy metals from aqueous solution. In the present study BDET was found to remove > 90% of several toxic or problematic metals from AMD samples taken from an abandoned mine in Pikeville, Kentucky. The concentrations of metals such as iron, may be reduced at pH 4.5 from 194 ppm to below 0.009 ppm. The formation of stoichiomietric BDET-metal precipitates in this process was confirmed using X-ray powder diffraction (XRD), proton nuclear magnetic resonance (H-1 NMR), and infrared spectroscopy (IR). (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：4757 / 4764

页数：8

共 16 条

[1] Adsorption of Pb and Cd onto metal oxides and organic material in natural surface coatings as determined by selective extractions: new evidence for the importance of Mn and Fe oxides [J].