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Reference type: Journal
Authors: Mafu LD, Mamba BB, Msagati TAM
Article Title: Synthesis and characterization of ion imprinted polymeric adsorbents for the selective recognition and removal of arsenic and selenium in wastewater samples.
Publication date: 2015
Journal: Journal of Saudi Chemical Society
Issue: (0)
DOI: 10.1016/j.jscs.2014.12.008
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1319610314001872

Abstract: Arsenic (As) and selenium (Se) ion imprinted polymers, As-IIPs and Se-IIPs, were synthesized via bulk polymerization. The prepared materials were then characterized using Fourier Transforms-Infrared (FT-IR), Scanning Electron Microscopy (SEM) and Thermogravimetric analysis (TGA). These characterization methods confirmed the difference between IIPs and non-imprinted polymers (NIP). From the adsorption studies done IIPs did not only show better adsorption than NIPs but better selectivities as well. As adsorption using As-IIPs (AsAsIIPs) reached a maximum of 482 μg g-1 whilst Se adsorption using Se-IIPs (SeSeIIPs) reached a maximum of 447 μg g-1 after optimization of the sample pH, adsorption time and sample temperature. However these adsorption capacities were increased to 568 μg g-1 and 530 μg g-1 for As and Se respectively when column experiments were done at the same sample temperature and pH. Against Pb, Cd and Hg, As-IIPs and Se-IIPs showed selectivity towards As and Se respectively
Author keywords: Adsorption, Arsenic, ion imprinted polymers, Selenium

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