Study on the performance and interaction of different synthetic iron oxides for arsenic uptake using 76As radiotracer

Nicy Ajith; K K Swain

doi:10.1016/j.apradiso.2019.108807

Study on the performance and interaction of different synthetic iron oxides for arsenic uptake using ⁷⁶As radiotracer

Appl Radiat Isot. 2019 Nov:153:108807. doi: 10.1016/j.apradiso.2019.108807. Epub 2019 Jul 12.

Authors

Nicy Ajith¹, K K Swain²

Affiliations

¹ Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India; HBNI, DAE, Anushaktinagar, Mumbai, Maharashtra, 400094, India.
² Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India; HBNI, DAE, Anushaktinagar, Mumbai, Maharashtra, 400094, India. Electronic address: kallola@barc.gov.in.

PMID: 31325796
DOI: 10.1016/j.apradiso.2019.108807

Abstract

A radiotracer technique was employed to study the sorption of As(III) and As(V) on chemically synthesized iron oxides: magnetite (Fe₃O₄), goethite (α-FeOOH) and hematite (Fe₂O₃) by batch equilibration mode. Magnetite and goethite were found to be promising sorbents for arsenic removal and applied to real ground water from West Bengal, India. A solvent extraction method using benzene was applied for the investigation of oxidation state of sorbed arsenic. A sorption mechanism was proposed for interaction of As(III)/As(V) with iron oxides.

Keywords: Adsorption; Arsenic; Goethite; Ground water; Magnetite.