Efficacy of vermitechnology integration with Upflow Anaerobic Sludge Blanket (UASB) and activated sludge for metal stabilization: a compliance study on fractionation and biosorption

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dc.contributor.author Taki, Kaling
dc.contributor.author Gogoi, Anindita
dc.contributor.author Mazumder, Payal
dc.contributor.author Bhattacharya, Satya Sunder
dc.contributor.author Kumar, Manish
dc.date.accessioned 2019-03-12T05:31:45Z
dc.date.available 2019-03-12T05:31:45Z
dc.date.issued 2019-04
dc.identifier.citation Taki, Kaling; Gogoi, Anindita; Mazumder, Payal; Bhattacharya, Satya Sunder and Kumar, Manish, "Efficacy of vermitechnology integration with Upflow Anaerobic Sludge Blanket (UASB) and activated sludge for metal stabilization: a compliance study on fractionation and biosorption", Journal of Environmental Management, DOI: 10.1016/j.jenvman.2019.01.006, vol. 236, pp. 603-612, Apr. 2019. en_US
dc.identifier.uri https://doi.org/10.1016/j.jenvman.2019.01.006
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4250
dc.description.abstract Efficacy of vermi-transformation for metal partitioning and transformation from Upflow Anaerobic Sludge Blanket (UASB) and Activated Sludge (AS) was investigated. Sludge samples were mixed with cow dung (CD) in two combinations (1:1 (UASB/AS:CD)) & (2:1(UASB/AS: CD)). Fractionation study revealed that Zn, Cd & Pb were associated with reducible fractions, and Cr, Cu with oxidizable fractions. Higher removal efficiency for 1:1 (UASB/AS: CD) combination over 2:1 (UASB/AS: CD) implies the non-significant contribution of cow dung during the metal stabilization process. After vermi-remediation, maximum metal removal was achieved at 1:1 ratio than 2:1 in AS. In UASB, 1:1 ratio worked better for Cr, Zn & Cd, whereas for Cu & Zn 2:1 ratio resulted in efficient removal. Overall for both AS and UASB, efficiency was found to be higher in 1:1 treatment ratio. The value of Kd (Bio sorption) was highest in Cu followed by Cr, which indicates the closer association with the metal bound organic matter (R2 ≥ 0.99). Based on the compliance study between two estimated sorption coefficients Kd (Biosorption & Fractions), vermi-remediation was found to be effective for AS than UASB. Therefore, the obtained results clearly validate the feasibility of integration of vermi-remediation as a potential promising ecological techniques for removing metal contaminant from the wastewater. Further research is required to study the decontamination of emerging contaminants with such integrated technology, which have physico-chemical properties different than metal ions.
dc.description.statementofresponsibility by Kaling Taki, Anindita Gogoi, Payal Mazumder, Satya Sunder Bhattacharya and Manish Kumar
dc.format.extent vol. 236, pp. 603-612
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Sewage sludge en_US
dc.subject Speciation en_US
dc.subject Fractionation en_US
dc.subject UASB en_US
dc.subject Vermicomposting en_US
dc.subject Metal en_US
dc.title Efficacy of vermitechnology integration with Upflow Anaerobic Sludge Blanket (UASB) and activated sludge for metal stabilization: a compliance study on fractionation and biosorption en_US
dc.type Article en_US
dc.relation.journal Journal of Environmental Management


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