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Reference type: Journal
Authors: Hajizadeh S, Kirsebom H, Galaev IY, Mattiasson B
Article Title: Evaluation of selective composite cryogel for bromate removal from drinking water.
Publication date: 2010
Journal: Journal of Separation Science
Volume: 33
Issue: (12)
Page numbers: 1752-1759.
DOI: 10.1002/jssc.201000019

Abstract: Bromate, which is a potential carcinogen, should be removed from drinking water to levels of less than 10μg/L. A chitosan-based molecularly imprinted polymer (MIP) and a sol-gel ion-exchange double hydrous oxide (Fe2O3Al2O3xH2O) adsorbent (inorganic adsorbent) were prepared for this purpose. The sorption behavior of each adsorbent including sorption kinetics, isotherms, effect of pH and selective sorption were investigated in detail. Sorption experimental results showed that the MIP adsorbents had better selectivity for bromate, even in the presence of high concentrations of nitrate, as compared to the inorganic adsorbent. It was found that pH does not affect the adsorption of bromate when using the inorganic adsorbent. Additionally, both adsorbents were immobilized in a polymeric cryogel inside plastic carriers to make them more practical for using in larger scale. Regeneration of the cryogels either containing MIP or inorganic adsorbents were carried out by 0.1M NaOH and 0.1M NaCl, respectively. It was found that the regenerated MIP and inorganic adsorbents could be used at least three and five times, respectively, without any loss in their sorption capacity
Template and target information: bromate
Author keywords: Composite cryogel, Isotherm study, molecular imprinting, selective adsorption


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