期刊
CHEMICAL ENGINEERING JOURNAL
卷 219, 期 -, 页码 62-68出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.12.073
关键词
Mesoporous carbon; Reactive dyes; Micro-column; Adsorption; Wastewater treatment
资金
- Ministerio de Educacion y Ciencia [CTQ2008-02728, BES-2009-014236]
- CONSOLIDER Program through TRAGUA Network [CSD2006-44]
- Comunidad de Madrid through REM-TAVARES Network [S- S2009/AMB-1588]
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.
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