Leaching of Arsenic from Contaminated Soil Amended with Red Clay

Abstract

The leaching of arsenic from contaminated soil amended with red clay was studied.The effects of water pH and amount of red clay amended in contaminated soil wereinvestigated. It was shown that at the various pH values only small fractions of arsenic wereleached as compared to the total amount present in the contaminated soil. The leaching ofarsenic decreased with increased the amount of red clay from 0.5%, 1.0%, and 2.0% w/w incontaminated soil and decreased slightly with increased the pH of water form 3 to 5 and thenincreased sharply.