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Research Article Open Access

A comparative study on fluoride adsorption by Al (III) modified clinoptilolite and carbonised punica granatum carbon


Sudhanshu Kanaujia1*, Sanjay K. Singhand Bharat Singh3



1Department of Chemistry, United College of Engineering and Research, Naini, Allahabad, 211002, U.P., India

2Department of Chemistry, Institute of Engineering and Technology, Lucknow, 211006, U.P., India

3Department of Chemistry, University of Allahabad, 211002, U.P., India

Adv. Mater. Proc., 2018, 3 (3), 142-145

DOI: 10.5185/amp.2018/972

Publication Date (Web):05 March 2018

Copyright © IAAM-VBRI Press



A comparative study was done for removal of fluoride by Al (III) modified Clinoptilolite (AC) and Carbonised Punica Granatum Carbon (CPGC) through batch techniques. The fluoride removal performance of both adsorbents AC and CPGC was evaluated as a function of the initial concentration, adsorbent  dose, contact time and pH. The equilibrium was attained at 90 and 75 minutes for AC and CPGC adsorbents, but percentage of removal was 76 and 65 for AC and CPGC respectively. The maximum adsorption of fluoride was found at pH 6.95 and 5.92 for AC and CPGC adsorbent respectively. The system followed the Freundlich isotherm model for both AC and CPGC with adsorption capacity 0.24 mg/g and 0.4 mg/g respectively. Copyright © 2018 VBRI Press.


Fluoride removal, adsorption, clinoptilolite, carbonised punica granatum carbon, freundlich isotherm.