Adsorption studies of copper on a-alumina. | [Journal of Chemical Society of Pakistan • 2010]

Author(s):

1. Sumra Naeem: Materials Science Research Center, PCSIR Labs. Complex, Lahore, Pakistan

2. Uzma Zafar: Materials Science Research Center, PCSIR Labs. Complex, Lahore, Pakistan

3. Naseem Zahra: Materials Science Research Center, PCSIR Labs. Complex, Lahore, Pakistan

4. Ghulam-Rasool: Materials Science Research Center, PCSIR Labs. Complex, Lahore, Pakistan

Abstract:

In this investigation, adsorption of Cu on α-Alumina has been studied by means of batch-technique. Percentage adsorption was determined for α-Alumina-Copper solution system as a function of contact time, pH, adsorbate concentration and temperature. Adsorption data has been interpreted in terms of Freundlich and Langmuir equations. Thermodynamics parameters for the adsorption system have been determined at three different temperatures. The value of AH°=15.822KJ/mole and AG°=-1.0775KJ/mole at 288K suggest that the adsorption of copper on α-Alumina is endothermic and spontaneous process. The desorption studies especially with 1% NaOH, 1% CaCl2and 1%HCI at given copper loadings on α-Alumina show that no significant percentage of the element is reversibly desorbed.

Page(s): 52-57

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 32, Issue: 1, Year: 2010

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