The Adsorptive Properties of Fired Clay Pellets for the Removal of Phosphate in Wastewater Treatment

ADRIAN, WOOD and AUGUSTINE O., IFELEBUEGU and MARK, J. BATEMAN and UDUAKOBONG, A. EDET (2016) The Adsorptive Properties of Fired Clay Pellets for the Removal of Phosphate in Wastewater Treatment. In: Fourth International Conference on Advances in Bio-Informatics, Bio-Technology and Environmental Engineering - ABBE 2016, 17 - 18 March, 2016, Birmingham City University, Birmingham, UNITED KINGDOM.

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Abstract

Removal of phosphate in wastewater treatment is crucial to reducing nutrient enrichment and eutrophication of aquatic bodies. This study explored the potential of fired clay pellets for use in phosphate removal during wastewater treatment. The mechanism of removal was evaluated in a batch adsorption study under different experimental conditions. Fired clay pellets were found to be effective in the adsorptive removal of phosphate from aqueous solution with a maximum adsorption capacity of 144mg/g. The experimental data showed a good fit to the pseudo-first-order kinetic model indicating a physical nature of the sorption process and also followed Dubinin-Radushkeivich Isotherm model. Adsorption of phosphate favoured acidic pH with optimum removal at pH 3-4. The values of Gibbs free energy (-16.5 kJ/mol), enthalpy (-8.87 kJ/mol) indicated adsorption was spontaneous and exothermic. The mechanism was found to be predominantly physisorption supported by some diffusion.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: adsorption, kinetics, phosphate, clay, isotherm
Depositing User: Mr. John Steve
Date Deposited: 25 Mar 2019 12:14
Last Modified: 25 Mar 2019 12:14
URI: http://publications.theired.org/id/eprint/933

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