Adsorption and Separation of As(V) with Af-Methylimidazolium Functionalized Anion Exchange Resin

The adsorption behavior of As(V) with N-methylimidazolium functionalized strongly basic anion exchange resin in Cr form (RCl) was systematically investigated. The RC1 had high thermal stability and good chemical stability under the experimental conditions, and it could be used in the wide pH range f...

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Bibliographic Details
Published in:Fēnxī huàxué 2013-01, Vol.41 (1), p.57-62
Main Authors: Jia, Min, Jin, Wei-Qun, Cui, Hong-Min, Chen, Ji
Format: Article
Language:English
Subjects:
Adsorption
Anion exchanging
Chromium
Endothermic reactions
Isotherms
Mathematical analysis
Polymers
Resins
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Summary:The adsorption behavior of As(V) with N-methylimidazolium functionalized strongly basic anion exchange resin in Cr form (RCl) was systematically investigated. The RC1 had high thermal stability and good chemical stability under the experimental conditions, and it could be used in the wide pH range from 1 to 12. So RC1 was very suitable for removing As(V) from water at a low concentration level. The adsorption mechanism was in accord with anion exchange mechanism. The adsorption equilibrium was attained at 60 min. To make sure true equilibrium was established, all the subsequent adsorption experiments were carried out for 2 h. The adsorption data for RC1 was consistent with the Langmuir isotherm equation, and the maximum adsorption capacity of As(V) was 67.2 mg/g. The adsorption percentage increased slightly with increasing temperature, which showed that the reaction was endothermic. RC1 was easily regenerated by 0.1 mol/L HC1, and the desorption percentage was up to 99.46%.
ISSN:0253-3820
DOI:10.3724/SP.J.1096.2013.20410