Spinel-type ferrite nanoparticles for removal of arsenic(V) from water
authors Tavares, DS; Lopes, CB; Almeida, JC; Vale, C; Pereira, E; Trindade, T
nationality International
journal ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
author keywords Arsenic; Magnetic separation; Ferrite nanoparticles; Sorption; Water purification
keywords AQUEOUS-SOLUTION; MAGNETIC NANOPARTICLES; ADSORPTION; FE3O4; PRECIPITATION; NANOCOMPOSITE; ADSORBENTS; ARSENATE; SORPTION; MNFE2O4
abstract Spinel ferrite particles (Fe3O4, MnFe2O4, and CoFe2O4) were investigated as magnetic nanosorbents for removing arsenic from spiked water samples. The nanosorbents were collected via magnetic separation from aqueous solutions spiked with an arsenic concentration that mimics the amount of this contaminant in real water samples. This research shows that using amounts of CoFe2O4 or MnFe2O4 as low as 40 mg/L, the arsenic content in the contaminated water decreased for levels below the maximum admitted value by the World Health Organization for drinking waters (10 mu g/L). Moreover, these magnetic nanosorbents also showed good performance for As(V) sorption, when applied to aqueous matrices with variable ionic strength and in the mixtures of other several hazardous contaminants. The good performance observed for the MnFe2O4 and CoFe2O4 ferrites contrasts with the one observed for Fe3O4 nanosorbent, whose efficiency is lower in the removal of As(V) from water, nevertheless increased with the presence of other elements in solution.
publisher SPRINGER HEIDELBERG
issn 0944-1344
year published 2020
volume 27
issue 18
beginning page 22523
ending page 22534
digital object identifier (doi) 10.1007/s11356-020-08673-9
web of science category Environmental Sciences
subject category Environmental Sciences & Ecology
unique article identifier WOS:000528136500014
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