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Removal of arsenic by Acidothiobacillus ferrooxidans bacteria in bench scale fixed-bed bioreactor system

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Title Removal of arsenic by Acidothiobacillus ferrooxidans bacteria in bench scale fixed-bed bioreactor system
 
Creator Kamde, Kalyani
Pandey, R A
Thul, Sanjog
Bansiwal, A
 
Subject Environmental Biotechnology
Chemistry, Chemical Technology
Water Treatment
 
Description In the present study arsenic contaminated simulated water and groundwater was treated by the combination of biological oxidation of tri-valent arsenite [As (III)] to penta-valent arsenate [As (V)] in presence of Acidothiobacillus ferrooxidans bacteria and its removal by adsorptive filtration in a bioreactor system. This
method includes the immobilisation of A.ferrooxidans on
Granulated Activated Carbon (GAC) capable of oxidising ferrous [Fe (II)] to ferric [Fe (III)]. The Fe (III) significantly converts the As (III) to As (V) and ultimately removed greater than 95% by the bed
of GAC, limestone, and sand. The significant influence of Fe (II) concentration (0.1–1.5 gL−1), flowrate (0.06–0.18 Lh−1), and initial As (III) concentration (100–1000 μgL−1) on the arsenic removal efficiency was investigated. The simulated water sample containing the different concentration of As (III) and other ions was used in the study. The removal of other co-existing ions
present in contaminated water was also investigated in column study. The concentration of arsenic was found to be
 
Publisher Taylor and Francis
 
Date 2018-08
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1290/1/CleanWater_Chem%26Eco.pdf
Kamde, Kalyani and Pandey, R A and Thul, Sanjog and Bansiwal, A (2018) Removal of arsenic by Acidothiobacillus ferrooxidans bacteria in bench scale fixed-bed bioreactor system. Chemistry and Ecology, 34 (9). pp. 818-838. ISSN 0275-7540 (P); 1029-0370 (E)
 
Relation https://doi.org/10.1080/02757540.2018.1504927
http://neeri.csircentral.net/1290/