Geogenic arsenic removal through core�shell based functionalized nanoparticles: groundwater in-situ treatment perspective in the post�COVID anthropocene

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dc.contributor.author Raval, Nirav P.
dc.contributor.author Kumar, Manish
dc.date.accessioned 2020-08-07T14:26:30Z
dc.date.available 2020-08-07T14:26:30Z
dc.date.issued 2021-01
dc.identifier.citation Raval, Nirav P. and Kumar, Manish, "Geogenic arsenic removal through core�shell based functionalized nanoparticles: groundwater in-situ treatment perspective in the post�COVID anthropocene", Journal of Hazardous Materials, DOI: 10.1016/j.jhazmat.2020.123466, vol. 402, Jan. 2021. en_US
dc.identifier.issn 0304-3894
dc.identifier.uri http://dx.doi.org/10.1016/j.jhazmat.2020.123466
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/5609
dc.description.abstract Groundwater, one of the significant potable water resources of the geological epoch is certainly contaminated with class I human carcinogenic metalloid of pnictogen family which delimiting its usability for human consumption. Hence, this study concerns with the elimination of arsenate (As(V)) from groundwater using bilayer�oleic coated iron�oxide nanoparticles (bilayer�OA@FeO NPs). The functionalized (with high�affinity carboxyl groups) adsorbent was characterized using the state�of�the�art techniques in order to understand the structural arrangement. The major emphasis was to examine the effects of pH (5.0�13), contact times (0�120 min), initial concentrations (10�150 ?g L�1), adsorbent dosages (0.1�3 g L�1), and co�existing anions in order to understand the optimal experimental conditions for the effective removal process. The adsorbent had better adsorption efficiency (? 32.8 ?g g�1, after 2 h) for As(V) at neutral pH. Adsorption process mainly followed pseudo�second�order kinetics and Freundlich isotherm models (R2?0.90) and was facilitated by coulombic, charge�dipole and surface complexation interactions. The regeneration (upto five cycles with 0.1 M NaOH) and competition studies (with binary and cocktail mixture of co�anions) supported the potential field application of the proposed adsorbent.
dc.description.statementofresponsibility by Nirav P. Raval AND Manish Kumar
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Nanoparticle en_US
dc.subject Arsenic en_US
dc.subject Geogenic contaminant en_US
dc.subject Surface modification en_US
dc.subject In�situ remediation en_US
dc.title Geogenic arsenic removal through core�shell based functionalized nanoparticles: groundwater in-situ treatment perspective in the post�COVID anthropocene en_US
dc.type Article en_US
dc.relation.journal Journal of Hazardous Materials


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