Cu(II)-Fe(III) oxide doped anion exchangers - Multifunctional composites for arsenite removal from water via As(III) adsorption and oxidation

Irena Jacukowicz-Sobala , Daniel Ociński , Piotr Mazur , Ewa Stanisławska , Elżbieta Kociołek-Balawejder

Abstract

The aim of the present study was to investigate As(III) oxidation and adsorption on the surface of hybrid anion exchangers containing Cu(II)-Fe(III) binary oxide deposited in their porous structure with the same Cu:Fe ratio of 1:2 but with different amounts and distribution of inorganic deposit within polymeric beads. The equilibrium studies confirmed high adsorption capacity of the best hybrid polymer: 94.4 mg As/g. Moreover, the adsorption was effective over a wide pH range, selective in the presence of interfering ions, and the material was effectively regenerated. The performance of the hybrid polymer was also confirmed in the column process which enabled both As(III) and As(V) concentrations to be lowered from 500 μg/L to below 10.0 μg/L in a solution with a composition similar to natural groundwater. The breakthrough point of the bed was reached after the solution amounting to 1833 bed volumes passed through the column. Desorbed As speciation, FTIR and XPS studies showed that As(III) was mainly adsorbed on the surface of Cu-Fe oxides followed by its oxidation to As(V). In the oxidation reaction metal oxides acted as catalysts and adsorbents, while the oxidant was probably oxygen dissolved in solution.
Author Irena Jacukowicz-Sobala (PE / DChT)
Irena Jacukowicz-Sobala,,
- Department of Chemical Technology
, Daniel Ociński (PE / DChT)
Daniel Ociński,,
- Department of Chemical Technology
, Piotr Mazur - University of Wrocław (UWr)
Piotr Mazur,,
-
, Ewa Stanisławska (EaE / IChaFT / DChT)
Ewa Stanisławska,,
- Department of Chemical Technology
, Elżbieta Kociołek-Balawejder (PE / DChT)
Elżbieta Kociołek-Balawejder,,
- Department of Chemical Technology
Journal seriesJournal of Hazardous Materials, ISSN 0304-3894, e-ISSN 1873-3336, (N/A 200 pkt)
Issue year2020
Vol394
Pages1-13
Publication size in sheets0.6
Article number122527
Keywords in EnglishCu-Fe binary oxides, arsenic, adsorption, heterogeneous oxidation, hybrid ion exchangers
ASJC Classification2304 Environmental Chemistry; 2305 Environmental Engineering; 2307 Health, Toxicology and Mutagenesis; 2310 Pollution; 2311 Waste Management and Disposal
DOIDOI:10.1016/j.jhazmat.2020.122527
Languageen angielski
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Jacukowicz-Sobala_Ociński_Mazur_Stanisławska_Kociolek-Balawejder_Cu(II)-Fe(III) oxide doped anion exchangers2020.pdf 3,08 MB
Score (nominal)200
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 2.055; WoS Impact Factor: 2018 = 7.65 (2) - 2018=7.336 (5)
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