期刊
BIORESOURCE TECHNOLOGY
卷 111, 期 -, 页码 127-133出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.02.054
关键词
Edible fungi residue; Activated carbon; Microwave radiation; K2CO3; Reactive black 5
资金
- Sichuan Province Education Office [08ZA058]
Preparation of activated carbon from the edible fungi residue (EFR) by microwave assisted K2CO3 activation was studied. The optimum preparation conditions were as follows: radiation time of 16 min, K2CO3/EFR ratio of 0.8 and microwave power of 520 W. The iodine number, the amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 732.74, 172.43 mg/g and 23.0%, respectively. The activated carbon was characterized by SEM, FT-IR, N-2 adsorption and pH(ZPC) and then they were used as adsorbent for removing reactive black 5 from aqueous solution. The highest removal efficiency of 100% could be achieved at the solution pH of 2.0, the adsorption efficiency descended with the increasing of pH and the optimum activated carbon dose was 8.75 g/L. The Langmuir isotherm well fit the adsorption process with the complete monolayer adsorption capacity of 19.6 mg/g and the equilibrium adsorption constant of 0.39 L/mg. (C) 2012 Elsevier Ltd. All rights reserved.
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