Temperature effect on Zn2+ adsorption by a-aluminium hydroxide from aqueous electrolyte solution. | [Physical chemistry • 1990]

Author(s):

1. S. Mustafa: National Centre of Excellence Physical Chemistry, University of Peshawar, Peshawar, Pakistan

2. M. Safdar: National Centre of Excellence Physical Chemistry, University of Peshawar, Peshawar, Pakistan

3. Gul Nawab: National Centre of Excellence Physical Chemistry, University of Peshawar, Peshawar, Pakistan

Abstract:

Adsorption of Zn2+ ions from aqueous solution of 0.1 M KCI on a-aluminum hydroxide Is studied as a function of concentration on the neutral surface hydroxyl groups in the temperature range (20-50C). The adsorption data is described by the linear form of the Langmuir equation. The maximum adsorption per unit mass of the -aluminium hydroxide increases with the increase in temperature. On the, average, one H ion is released per Zn+ ion adsorbed. The values of AG, AS and AH of the interfacial reaction are also reported. The differential isosteric heat of the adsorption H of Zn+ adsorption on Aluminum hydroxide is computed between the 20C and 50C. AH increases linearly with the increase in the extent of adsorption.

Page(s): 79-86

DOI: DOI not available

Published: Journal: Physical chemistry, Volume: 9, Issue: , Year: 1990

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