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|Title: ||Sorption of arsenic onto Vindhyan shales: Role of pyrite and organic carbon|
|Authors: ||PAIKARAY, S|
|Issue Date: ||2005|
|Publisher: ||CURRENT SCIENCE ASSN|
|Citation: ||CURRENT SCIENCE, 88(10), 1580-1585|
|Abstract: ||Batch isotherms: for arsenic sorption on Vindhyan shales were compared with arsenic sorption on black cotton soil. High sorption was observed on pyrite-rich shales and the Freundlich capacity constant K-F yielded a good correlation with sediment pyrite content. Shales with high organic carbon sorbed more arsenic; however, the organic carbon-rich soil demonstrated significantly lower sorption. This difference may be due to the condensed nature of organic carbon in shale, which may have facilitated formation of organo-arsenic complexes. The pyrite content was also strongly correlated with the organic carbon content, possibly due to microbial synthesis during shale diagenesis.|
|Appears in Collections:||Article|
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