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Biotite and organic matter in controlling As release in groundwater


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  • Product Description

Preveously hypothesized that microbial reductive dissolution of As-containing Fe(III) oxyhydroxide (FeOOH) responsible for releasing of As in the Bengal Delta Plain (BDP) aquifers. But FeOOH is a secondary phase formed via chemical weathering of basic minerals. No one observed groundwater As concentration in shallow (i.e.<10 m depth)aquifer sediments. At that depth, reduction of FeOOH is expected to occur, since the greatest biogeochemical activity occurs there. Note that the dissolved As concentration is low at those depths. The As contaminated groundwater appears to be at a maximum deeper (i.e. 15-30 m depth) in the aquifer. Questions arises what is the primary source of As and role of organic matter in the aquifer sediments. Based on the detailed anlyses of sediments collected from Sonargaon upazila of Narayanganj district, Bangladesh, primary source of As is identified and a mobilization mechanism suggested, which is different from those previously proposed. I think this work is a better insight into the extent of the formation mechanism of As in the BDP and other analog of the world, and also give a hint for developing its remediation technique.

Product Specifications
SKU :COC28654
AuthorDr. Ashraf Seddique
Number of Pages100
Publishing Year2010-06-06T00:00:00.000
Edition1 st
Book TypeEnvironmental science, engineering & technology
Country of ManufactureIndia
Product BrandLAP LAMBERT Academic Publishing
Product Packaging InfoBox
In The Box1 Piece
Product First Available On ClickOnCare.com2015-07-29 00:00:00