Adsorption studies of Cr (VI) on rice husk ash (Rha). | [Journal of Chemical Society of Pakistan • 2009]

Author(s):

1. Uzma Zafar: Material Science Research Centre, PCSIR Laboratories Complex, Lahore, Pakistan

2. Sumra Naeem: Material Science Research Centre, PCSIR Laboratories Complex, Lahore, Pakistan

3. Arifa Altaf: Material Science Research Centre, PCSIR Laboratories Complex, Lahore, Pakistan

4. Asma Inayat: Material Science Research Centre, PCSIR Laboratories Complex, Lahore, Pakistan

Abstract:

In the present investigation, the adsorption of Cr (VI) was studied by making use of batch-technique Percentage adsorption was calculated For RHA-Chromium solution system as a function of i) contact time, ii) pH, iii) adsorbate concentration and iv) temperature. Adsorption is interpreted in terms of Freundlich and Langmuir equations. The value of ?Ho was found to be-16.4708 KJ/mole. The desorption studies especially with 0.1M CaCl2 and 10% HCl at given Chromium loadings on RHA give significant percent desorption of Cr (VI).

Page(s): 379-382

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 31, Issue: 3, Year: 2009

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