Journal
WATER RESEARCH
Volume 36, Issue 19, Pages 4757-4764Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0043-1354(02)00149-5
Keywords
BDET; acid mine drainage; water treatment; remediation; heavy metals; chemical precipitation; mercury; iron
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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.
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