Elsevier

Carbon

Volume 30, Issue 4, 1992, Pages 639-645
Carbon

Regular article
A clay-carbon adsorbent derived from spent bleaching earth: Surface characterisation and adsorption of chlorophenols from aqueous solution

https://doi.org/10.1016/0008-6223(92)90183-WGet rights and content

Abstract

An active carbonaceous char supported on a aluminosilicate matrix has previously been prepared by the chemical activation of spent bleaching earth, a sol d waste from the edible oil industry. The underlying mineral structure was characterised in this study by XRD and SEM and shown to consist of ill-defined montmorillonite lamellae, with significant loss in crystallinity from the parent material being observed. The adsorption of phenol, 3-chlorophenol and 2,3-dichlorophenol was assessed and found to conform to a Langmuir isotherm model and a comparison with commercial powdered water-treatment carbons suggested that the surface char of the treated spent clay was sufficiently active to warrant a pilotstudy investigation of this low-cost adsorbent for applications relating to wastewater treatment.

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  • Cited by (0)

    Currently Postdoctoral Research Fellow, Environmental Health Program, Faculty of Medicine, University of Alberta, Edmonton, Alberta, Canada, T6G 2G3.

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