Utilization of chemically modified citrus reticulata peels for biosorptive removal of acid yellow-73 dye from water. | [Journal of Chemical Society of Pakistan • 2013]

Author(s):

1. Rabia Rehman: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

2. Muhammad Salman: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

3. Tariq Mahmud: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

4. Farah Kanwal: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

5. Waheed-Uz-Zaman: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

Abstract:

Textile effluents contain several varieties of natural and synthetic dyes, which are non- biodegradable. Acid Yellow-73 is one of them. In this research work, adsorptive removal of this dye was investigated using chemically modified Citrus reticulata peels, in batch mode. It was noted that adsorption of dye on Citrus reticulata peels increased by increasing contact time and decreased in basic pH conditions. Langmuir and Freundlich isothermal models were followed by equilibrium data, but the first isotherm fitted the data better, showing that chemisorption occurred more as compared to physiosorption, showing maximum adsorption capacity 96.46 mg.g-1.L-1. The thermodynamic study showed that adsorption of Acid Yellow-73 on chemically modified Citrus reticulata peels was favorable in nature, following pseudo-second order kinetics.

Page(s): 612-617

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 35, Issue: 3, Year: 2013

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