256 Mercury and Soft Metal Removal From Water

Thursday, November 5, 2009: 2:40 PM
Kohlberg (Camino Real Hotel)
David Atwood , Department of Chemistry, University of Kentucky, Lexington, KY
Lisa Blue , Department of Chemistry, University of Kentucky, Lexington, KY
Partha Jana , Department of Chemistry, University of Kentucky, Lexington, KY
Christopher Preece , Department of Chemistry, University of Kentucky, Lexington, KY
Richa Athalye , Department of Chemistry, University of Kentucky, Lexington, KY
The Atwood group has designed and synthesized a new class of sulfur-containing compounds, one of which is “BDTH2” (based on the common name, 1,3-Benzene Diamidoethane Thiol) that covalently and irreversibly precipitates mercury and other soft heavy metals and metalloids (Cu, Cd, Pb, As, Se) from water (see: Inorg. Chem. 46 (2007) 1975). BDTH2 reduces aqueous heavy metal concentrations in the ppm and ppb range to below instrumental detection limits. Furthermore, the BDT-metal compounds are stable over a wide pH range and in oxidative and reductive conditions. This has made BDTH2 of utility for soft metal removal in applications such as gold mining, acid mine drainage and lead battery recycling. BDTH2 reduces metal leaching from sulfide minerals and coal through surface covalent bonding. The presentation will describe the fundamental chemistry underlying the unique bonding ability of BDTH2 to soft metals as well as selected remediation applications. 

BDTH2 is now being marketed under the name "B9" by Merloc, LLC (Inquiries@MerlocLLC.com)