Galan, J,Rodriguez, A,Gomez, JM,Allen, SJ,Walker, GM

2013

January

Chemical Engineering Journal

Reactive dye adsorption onto a novel mesoporous carbon

Published

()

Mesoporous carbon Reactive dyes Micro-column Adsorption Wastewater treatment ACTIVATED CARBON AQUEOUS-SOLUTIONS EQUILIBRIUM REMOVAL TEMPERATURE ADSORBENT EFFLUENT ISOTHERM SORPTION MODEL

219

62

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A new mesoporous carbon (MCSG60) was developed using an inexpensive commercial mesoporous silica gel as a template and sucrose as the carbon source. The surface area, porosity and density of the carbon were determined. The material possesses a high specific surface area and pore volume accessible for most typical aqueous pollutants. The adsorbent material was tested in a batch dye adsorption system. The behaviour of three reactive dyes adsorbed onto MCSG60 was evaluated (Naphthol Blue Black, NBB; Reactive Black 5, RB5; and Remazol Brilliant Blue R, RBBR). The maximum adsorption capacities obtained for the dyes were: 270 mg/g for NBB; 270 mg/g for RB5; and 280 mg/g for RBBR. Kinetic studies indicated that the adsorption process onto the mesoporous carbon was rapid and that equilibrium was reached in less than 1 h for all the dye systems investigated. Further batch experiments showed MCSG60 successfully adsorbed the dyes over a wide pH range and at low adsorbate concentration. The adsorption potential of MCSG60 for dye removal was further evaluated using a fixed-bed adsorption column. (C) 2013 Elsevier B.V. All rights reserved.

10.1016/j.cej.2012.12.073