Title: Removal of basic dye (basic magenta) using low-cost biosorbents from aqueous solutions: kinetic and equilibrium studies

Authors: Xue Song Wang

Addresses: Department of Chemical Engineering, Huaihai Institute of Technology, 59 Changwu Road, Lianyungang, Jiangsu 222005, China

Abstract: The removal of basic magenta dye by low-cost biosorbents has been investigated using the batch experimental system. The adsorption of basic magenta onto various adsorbents was solution pH-dependent and the maximum removal occurred at basic pH (ca. 10.0). The kinetic experimental data were analysed using the Lagergren pseudo-first-order equation and pseudo-second-order equation equations to examine the mechanism of adsorption, and the results suggested that the adsorption of basic magenta onto various adsorbents was best represented by the pseudo-second-order equation. The linearised Langmuir and Freundlich adsorption isotherms were used to fit the equilibrium data and the adsorption isotherms for various adsorbents at all different temperatures exhibited Freundlich behaviour.

Keywords: biosorption; basic magenta dye; low-cost adsorbents; dyes; wastewater treatment; kinetics; equilibrium; adsorption.

DOI: 10.1504/IJETM.2010.031525

International Journal of Environmental Technology and Management, 2010 Vol.12 No.2/3/4, pp.151 - 162

Published online: 10 Feb 2010 *

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