alexa Adsorption of Lead from Aqueous Solution onto Untreated Orange Barks
Environmental Sciences

Environmental Sciences

Journal of Pollution Effects & Control

Author(s): Naima Azouaou, Mohamed Belmedani, Hassiba Mokaddem, Zahra Sadaoui

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Waste materials with no further treatment such as orange barks from commercial oranges may act as adsorbent for the removal of Pb2+. Batch kinetic and equilibrium experiments were conducted to study the effects of contact time, initial pH, adsorbent dose and initial concentration of lead. The results show that the equilibrium was achieved less than 30 min of contact time. Three adsorption isotherm models namely, Langmuir, Freundlich and Dubinin-Radushkevich were used to analyse the equilibrium data. The Langmuir isotherm which provided the best correlation for Pb2+ adsorption onto orange barks reveals that the adsorption was favourable and the maximum adsorption capacity found was equal to 112,36 mg.g-1. The results of the present study suggest that orange barks will be used as an effective and economical adsorbent for Pb2+ removal.

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This article was published in Chemical Engineering Transactions and referenced in Journal of Pollution Effects & Control

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