Redox polymer with N,N-dichlorosulfonamide functional groups as arsenite oxidant in aqueous solutions

Daniel Ociński , Ewa Stanisławska , Elżbieta Kociołek-Balawejder

Abstract

A macroporous, styrene-divinylbenzene polymer with N,N-dichlorosulfonamide functional groups ([BOND]SO2NCl2), containing two chlorine atoms with oxidation number +1, have been prepared through the chemical modification of a commercial sulfonic cation exchanger (Amberlyst 15, Rohm and Haas). Obtained product was used as the heterogeneous oxidant of As(III) in aqueous solutions. The polymer's oxidizing capacity, determined as part of the batch studies, amounted to 193.29 mg As(III) g−1 (pH = 7.7) and 206.03 mg As(III) g−1 (pH = 2.0). The suitability of the redox polymer for long-lasting operation in the aqueous environment was confirmed in the column study conducted using a solution with a concentration of 10 mg As(III) dm−3 at a flow rate of 6 bed volumes (BV) h−1. The concentration of As(III) in the effluent reached the value of 0.01 mg As(III) dm−3 only after 8 weeks of continuous operation when 7930 BV of the solution had passed through the bed
Author Daniel Ociński (EaE / IChaFT / DChT)
Daniel Ociński,,
- Department of Chemical Technology
, Ewa Stanisławska (EaE / IChaFT / DChT)
Ewa Stanisławska,,
- Department of Chemical Technology
, Elżbieta Kociołek-Balawejder (EaE / IChaFT / DChT)
Elżbieta Kociołek-Balawejder,,
- Department of Chemical Technology
Journal seriesJournal of Applied Polymer Science, ISSN 0021-8995, e-ISSN 1097-4628, (A 25 pkt)
Issue year2015
Vol132
No9
Pages1-8
Publication size in sheets0.5
Keywords in Englishactive chlorine, arsenite oxidation, heterogeneous oxidants, redox polymers, water treatment
ASJC Classification2505 Materials Chemistry; 2507 Polymers and Plastics; 2508 Surfaces, Coatings and Films; 1600 General Chemistry
DOIDOI:10.1002/app.41552
URL http://onlinelibrary.wiley.com/doi/10.1002/app.41552/full
Languageen angielski
Score (nominal)25
Score sourcejournalList
Publication indicators Scopus Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2015 = 0.846; WoS Impact Factor: 2015 = 1.866 (2) - 2015=1.647 (5)
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