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Crosslinked polyDADMAC gels as highly selective and reusable arsenate binding materials
Date
2015-02-15
Author
Pirgalioglu, Saltuk
Ozbelge, Tulay A.
Özbelge, Hilmi Önder
Bicak, Niyazi
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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High porosity cationic hydrogels synthesized via crosslinking co-polymerization of diallyldimethylammonium chloride (DADMAC) with N,N'-tetraallylpiperaziniumdichloride (TAP) showed high affinity towards arsenate anions over a wide pH range within notably short periods. Batch tests indicated that poly(DADMAC) hydrogels removed 99% of the arsenate anions from aqueous solutions at pH 6-10 and exhibited a maximum arsenic removal capacity of 0.12 g arsenic per gram of hydrogel. DADMAC hydrogels performed well at various pH levels after a short contact time (i.e., 10 min). Evidence of the ion exchange mechanism was based on experiments with solutions containing competing chloride and sulfate ions. An "intra-particle diffusion model" was proposed for the kinetics of arsenic removal. This gel was determined to be a good candidate for use in practice due to its easy regeneration either by treating with a 8.24 g/L of NaCl solution or by reducing the pH of the medium to below 1.0.
Subject Keywords
Hydrogel
,
Diallyldimethylammonium chloride (DADMAC)
,
Arsenic(V); N,N '-tetraallylpiperaziniumdichloride (TAP)
,
Arsenic removal
,
Lon exchange
URI
https://hdl.handle.net/11511/56556
Journal
CHEMICAL ENGINEERING JOURNAL
DOI
https://doi.org/10.1016/j.cej.2014.10.015
Collections
Graduate School of Natural and Applied Sciences, Article
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S. Pirgalioglu, T. A. Ozbelge, H. Ö. Özbelge, and N. Bicak, “Crosslinked polyDADMAC gels as highly selective and reusable arsenate binding materials,”
CHEMICAL ENGINEERING JOURNAL
, pp. 607–615, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56556.