期刊
BIORESOURCE TECHNOLOGY
卷 111, 期 -, 页码 425-432出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.01.141
关键词
Activated carbon; Adsorption; Methylene blue; Microwave; Wood sawdust
资金
- Universiti Sains Malaysia [1001/PJKIMIA/814072]
- RU-PRGS [8043030]
Wood sawdust was converted into a high-quality activated carbon (WSAC) via microwave-induced K2CO3 activation. The operational variables including chemical impregnation ratio, microwave power and irradiation time on the carbon yield and adsorption capability were identified. The surface physical characteristics of WSAC were examined by pore structural analysis, scanning electron microscopy and nitrogen adsorption isotherms. The adsorptive behavior of WSAC was quantified using methylene blue as model dye compound. The best conditions resulted in activated carbon with a monolayer adsorption capacity of 423.17 mg/g and carbon yield of 80.75%. The BET surface area, Langmuir surface area and total pore volume were corresponded to 1496.05 m(2)/g, 2245.53 m(2)/g and 0.864 cm(3)/g, respectively. The findings support the potential to prepare high surface area and mesoporous activated carbon from wood sawdust by microwave assisted chemical activation. (C) 2012 Elsevier Ltd. All rights reserved.
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