Removal of sulfides from water using a hybrid ion exchanger containing manganese(IV) oxide

Łukasz Wilk , Agnieszka Ciechanowska , Elżbieta Kociołek-Balawejder

Abstract

A hybrid ion exchanger (HIX) containing manganese(IV) oxide based on a macroporous, strongly basic anion exchanger as supporting material was obtained. The introduced MnO2 (26.4% Mn) was amorphous and evenly distributed within the polymer matrix. The hybrid material was used for removal of sulfides from anoxic aqueous solutions with 100–500 mg S2–/dm3 concentrations and pH in the range 12.0–14.0. The highest sorption capacity exhibited by the sorbent was 152.0 mg S2−/g. Approximately 60% of dissolved sulfides were oxidized to S2O3 2 − and repelled from the HIX structure to the aqueous phase of the examined systems, whereas 15% was bound with the sorbent beads in the form of polysulfides. Based on the identified sulfide adsorption and oxidation products, the mechanism of the sulfide removal process using synthesized hybrid material is suggested.
Author Łukasz Wilk (EaE / IChaFT / DChT)
Łukasz Wilk,,
- Department of Chemical Technology
, Agnieszka Ciechanowska (EaE / IChaFT / DChT)
Agnieszka Ciechanowska,,
- Department of Chemical Technology
, Elżbieta Kociołek-Balawejder (EaE / IChaFT / DChT)
Elżbieta Kociołek-Balawejder,,
- Department of Chemical Technology
Journal seriesSeparation and Purification Technology, ISSN 1383-5866, e-ISSN 1873-3794, (N/A 140 pkt)
Issue year2020
Vol231
Pages1-11
Publication size in sheets0.5
Article number115882
Keywords in EnglishAnion exchanger, Hybrid ion exchanger, Manganese(IV) oxide, Reductive dissolution, Sulfide removal
ASJC Classification1506 Filtration and Separation; 1602 Analytical Chemistry
DOIDOI:10.1016/j.seppur.2019.115882
URL https://www.sciencedirect.com/science/article/pii/S1383586619319604
Languageen angielski
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Wilk_Ciechanowska_Kociołek_Balawejder_Removal_of_sulfides_water_2019.pdf 1,91 MB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 27-11-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.394; WoS Impact Factor: 2018 = 5.107 (2) - 2018=4.551 (5)
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