Open AccessSpeciation and Attenuation of Arsenic and Selenium at Coal Combustion By-Product Management Facilities
Author(s) -
K Ladwig,
B Hensel,
D Wallschlager,
L Lee,
I Murarka
Publication year - 2005
Language(s) - English
Resource type - Reports
DOI - 10.2172/860441
Subject(s) - arsenic , selenium , coal combustion products , environmental chemistry , environmental science , coal , leachate , genetic algorithm , strontium , chemistry , biology , organic chemistry , evolutionary biology
Following completion of contracting activities, sites were identified for the field leachate characterization study. Sampling and Analyses Plans (SAPs) and Site Access Agreements (SAAs) were developed for each site. A total of ten sites were sampled during this reporting period. Among the trace constituents, boron, silicon, and strontium were present in highest concentrations, with median values above 1 mg/L (1,000 {micro}g/L). Work on the first of three sites for the detailed arsenic and selenium adsorption studies began in 2002, prior to completion of the final DOE award. Kd values ranged from 100 to 12,000 L/kg for arsenic (V), 15 to 160 L.kg for As(III), and 5 to 25 L/kg for Se(VI)