Adsorption of XSD-296 resin for Cr(VI)

The adsorption properties of XSD-296 for Cr(VI) were studied by using chemical analysis and infrared spectrometry. Experimental results show that XSD-296 resin has a good adsorption ability for Cr(VI) at pH=2.6 in the HAc-NaAc medium. The statically saturated adsorption capacity is 235 mg/g resin. T...

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Published in:Transactions of Nonferrous Metals Society of China 2007-08, Vol.17 (4), p.869-873
Main Authors: SHU, Zeng-nian, DU, Rong-jun, WANG, Xu, XIONG, Chun-hua, LI, Tao
Format: Article
Language:English
Subjects:
adsorption
chromium(VI)
XSD-296 resin
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creator SHU, Zeng-nian
DU, Rong-jun
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XIONG, Chun-hua
LI, Tao
description The adsorption properties of XSD-296 for Cr(VI) were studied by using chemical analysis and infrared spectrometry. Experimental results show that XSD-296 resin has a good adsorption ability for Cr(VI) at pH=2.6 in the HAc-NaAc medium. The statically saturated adsorption capacity is 235 mg/g resin. The apparent activation energy of adsorption reaction. E a, is 16.73 kJ/mol, and the thermodynamic parameters are Δ H=11.62 kJ/mol, Δ G 298 K=-4.13 kJ/mol. The adsorption behavior of resin for Cr(VI) is in accordance with Freundlich adsorption isotherm. Cr(VI) adsorbed on resin can be eluted by 5%NaCl-5%NaOH or 5%NH 4Cl-5%NH 3 · H 2O quantitatively. Infrared spectra and adsorption mechanism show that the functional group of resin coordinates with Cr(VI) to form co-ordination compound. The coordination molar ratio of the functional group of resin to Cr(VI) is 1:1.
doi_str_mv 10.1016/S1003-6326(07)60190-3
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subjects adsorption
chromium(VI)
XSD-296 resin
title Adsorption of XSD-296 resin for Cr(VI)
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