Aminoalkoxy-organo-silane treated sand for the adsorptive removal of arsenic from the groundwater: Immoblizing the moblized geogenic contaminants

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dc.contributor.author Kumar, Manish
dc.contributor.author Mukherjee, Santanu
dc.contributor.author Thakur, Alok Kumar
dc.contributor.author Raval, Nirav
dc.contributor.author Kyoungjin An, Alicia
dc.contributor.author Gikas, Petros
dc.coverage.spatial United States of America
dc.date.accessioned 2021-12-24T11:50:54Z
dc.date.available 2021-12-24T11:50:54Z
dc.date.issued 2022-03
dc.identifier.citation Kumar, Manish; Mukherjee, Santanu; Thakur, Alok Kumar; Raval, Nirav; Kyoungjin An, Alicia and Gikas, Petros, “Aminoalkoxy-organo-silane treated sand for the adsorptive removal of arsenic from the groundwater: Immoblizing the moblized geogenic contaminants”, Journal of Hazardous Materials, DOI: 10.1016/j.jhazmat.2021.127916, vol. 425, Mar. 2022. en_US
dc.identifier.issn 0304-3894
dc.identifier.uri https://doi.org/10.1016/j.jhazmat.2021.127916
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7360
dc.description.abstract Arsenic (As), a geogenic legacy pollutant can be present in environmental matrices (water, soil, plants, or animal) in two redox states (As(III) or As(V)). In the present study, charged mono- and di-amino functionalized triethoxy and methoxyorganosilane (TT1 and TT2- 1% and 5%) were impregnated with quartz sand particles for the treatment of As polluted water. Spectroscopic characterization of organosilane treated sand (STS) indicated the co-existence of minerals (Mg, Mn, Ti), amide, and amidoalkyl groups, which implies the suitability of silanized materials as a metal(loids) immobilization agent from water. Changes in peaks were observed after As sorption in Fourier thermal infrared and EDS images indicating the involvement of chemisorption. Batch sorption studies were performed with the optimized experimental parameters, where an increased removal (>20% for TT2�1% and >60% for TT1�1%) of As was observed with sorbate concentration (50 �g L?1), temp. (25 � 2 �C) and sorbent dosages (of 10 g L?1) at 120 min contact time. Among the different adsorbent dosages, 10 g L?1 of both TT1 and TT2 was selected as an optimum dosage (maximum adsorption capacity ? 2.91 ?g g?1). The sorption model parameters suggested the possibility of chemisorption, charge/ion-dipole interaction for the removal of arsenate
dc.description.statementofresponsibility by Manish Kumar, Santanu Mukherjee, Alok Kumar Thakur, Nirav Raval, Alicia Kyoungjin An and Petros Gikas
dc.format.extent vol. 425
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Mono and di-aminosilane en_US
dc.subject Chemisorption en_US
dc.subject Ion-dipole en_US
dc.subject Triethoxy en_US
dc.subject Methoxyorganosilane en_US
dc.title Aminoalkoxy-organo-silane treated sand for the adsorptive removal of arsenic from the groundwater: Immoblizing the moblized geogenic contaminants en_US
dc.type Article en_US
dc.relation.journal Journal of Hazardous Materials


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