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Chromium (III) removal by weak acid exchanger Amberlite IRC-50 (Na) by S. Mustafa; K.H. Shah; A. Naeem; M. Waseem; M. Tahir is a Environmental Science article available to read on EtoBox.

What is Chromium (III) removal by weak acid exchanger Amberlite IRC-50 (Na) about?

Chromium (III) sorption on a weakly macroporous cation exchanger Amberlite IRC-50 (Na) is studied as a function of time and temperature. The rate constant values for chromium (III) sorption are calculated both for film and particle diffusion processes. The temperature is found to have a positive effect on both the diffusional processes. The high values of energy of activation confirm the particle diffusional nature of the process. The pH changes in the system show a competition between the Cr(OH) 2+ and H + ions for the exchange sites of the adsorbent. Equilibrium data are explained with the help of Langmuir equation. Various thermodynamic parameters ( H • , S • and G • ) from chromium (III) exchange on the resin are calculated.

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Author

S. Mustafa; K.H. Shah; A. Naeem; M. Waseem; M. Tahir

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3894)

Published

2008

Language

EN

Field

Environmental Science (Physical Sciences)