Abstract
Arsenic mobilization and immobilization are primarily controlled via hydrogeological and microbiological activity in an alluvial flood plain. In this study, two distinctly different high (HAsCR) and low (LAsCR) arsenic contaminated regions were selected. Morphological analysis of sediment samples showed the presence of authigenic (viz. magnetite) in HAsCR whereas detrital minerals (viz. flaky muscovite) morphology observed in the LAsCR study area. Indigenous arsenic-reducing microbes were isolated from groundwater samples of both study areas. The identified microbial species are Lysinibacillus sphaericus,Acinetobacter nosocomialis,Pseudomonas aeruginosa and Bacillus licheniformis showed a significant As tolerance limit and depicted their capability to enhance the dissolved arsenate [As(V)] concentration in the study area groundwater aquifers. This collective study for sediment color and microbiology analysis of two representative alluvial regions, suggested that the redox aquifer condition is favorable for the reductive dissolution mechanism of iron along with arsenate-reducing microorganism, which found main cause for the heterogeneous distribution of dissolved arsenic. This study bridges the knowledge gap between causes for heterogeneous concentration distribution of As in alluvial aquifer and the role of arsenate reducing bacteria in high and low As contaminated groundwater regions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
