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Citation: YU Junfeng, CHEN Peirong, YU Zhimin, PENG Shuchuan, WU Yang. Preparation and Characteristic of Activated Carbon from Sawdust Bio-char by Chemical Activation with KOH[J]. Chinese Journal of Applied Chemistry, ;2013, 30(9): 1017-1022. doi: 10.3724/SP.J.1095.2013.20492 shu

Preparation and Characteristic of Activated Carbon from Sawdust Bio-char by Chemical Activation with KOH

YU Junfeng ^a, ,
CHEN Peirong ^b ,
YU Zhimin ^c,d ,
PENG Shuchuan ^a ,
WU Yang ^c

a. School of Resource & Environmental Engineering, Hefei University of Technology;Hefei 230009, China;
b. School of Science, Anhui Agricultural University;Hefei 230036, China;
c. Hefei Research Institute of Environmental Engineering;Hefei 230022, China;
d. Department of Biology and Environmental Engineering, Hefei University, Hefei 230022, China

Received Date: 30 October 2012
Revised Date: 12 March 2013

The activated carbon was prepared from pyrolysis bio-char of sawdust by chemical activation with KOH. The influences of the mass ratio of alkali to carbon,activation temperature and hold time toward the methylene blue adsorption on activated carbon were investigated. After this,the structure and properties of raw materials and activated carbon were characterized by nitrogen adsorption,XRD and FTIR spectroscopies. The results show that the methylene blue adsorption on activated carbon reaches to 255 mg/g at an alkali to carbon mass ratio of 1.5,an activation temperature of 750℃ and a hold time of 2 h. The activated carbon possesses a large apparent surface area(S_BET=1514 m²/g) and high adsorption pore volume(V=0.821 cm³/g) with average pore size diameter of 2.170 nm.
- bio-char,
- chemical activation,
- activated carbon
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