A monophosphonic group-functionalized ion-imprinted polymer for a removal of Fe3+ from highly concentrated basic chromium sulfate solution

An ion-imprinted polymer (IIP) with monophosphonic groups was prepared by thermal copolymerization. Bis(2-methacryloxyethyl) phosphate (BMAOP) was used as functional monomer to react with Fe 3+ in dimethyl sulfoxide (DMSO). Ethylene glycol dimethacrylate (EGDMA) was used as cross-linker during polym...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2020, 37(5), 242, pp.911-920
Main Authors: Zhu, Guang-jin, Tang, Hai-yan, Qing, Peng-hui, Zhang, Hong-ling, Cheng, Xi-chuan, Cai, Zai-hua, Xu, Hong-bin, Zhang, Yi
Format: Article
Language:English
Subjects:
Adsorption
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Chromium salts
Copolymerization
Crosslinking
Dimethyl sulfoxide
Ethylene glycol
Ferric ions
Glycol dimethacrylates
Imprinted polymers
Industrial Chemistry
Industrial Chemistry/Chemical Engineering
Materials Science
Polymer
Polymers
Recyclability
Selectivity
화학공학
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Summary:An ion-imprinted polymer (IIP) with monophosphonic groups was prepared by thermal copolymerization. Bis(2-methacryloxyethyl) phosphate (BMAOP) was used as functional monomer to react with Fe 3+ in dimethyl sulfoxide (DMSO). Ethylene glycol dimethacrylate (EGDMA) was used as cross-linker during polymerization process. A suitable molar ratio of BMAOP to Fe 3+ was investigated by UV/Vis/NIR Spectrometer and ICP-OES. The obtained results showed that the monophosphonic groups could be selectively combined with Fe 3+ in solutions containing other coexisting ions, and the selectivity could be further enhanced by ion-imprinted process. The prepared IIP was used for removing trace Fe 3+ from high concentration basic chromium sulfate solutions. After adsorption process, the concentration of Fe 3+ could be reduced from 4.486mg L −1 to 0.171mg L −1 , which was much lower than the concentration in the solution treated by non-imprinted polymer (NIP). Moreover, the IIP exhibited excellent recyclability after six adsorption-desorption cycles.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-020-0485-6