Optimization of Activated Carbon Preparation from Desilicon Rice Huskvia Compound Agents by Response Surface Methodology
[1]CHEN Jun-ying,FENG Xiang-ying,SHI Zhao-xia,et al.Optimization of Activated Carbon Preparation from Desilicon Rice Huskvia Compound Agents by Response Surface Methodology[J].Journal of Zhengzhou University (Engineering Science),2015,36(02):120-124.[doi:10.3969/j.issn.1671-6833.2015.02.026]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 02
Page number:
120-124
Column:
Public date:
2015-04-30
- Title:
- Optimization of Activated Carbon Preparation from Desilicon Rice Huskvia Compound Agents by Response Surface Methodology
- Keywords:
- response surface method; compound activating agent; desilicon rice husk; activatedcarbon ; characterization
- CLC:
- TQ424
- Abstract:
- The activated carbon was prepared from desilicon rice husk by compound activating agents ( NaOHand Na,CO,). The influence of four factors ( activation temperature,activation time,mixed ratio,mass con-centration of the impregnating solution) and three levels w investigated. The process was optimized by re-sponse surface methodology. The results showed that activation temperature and concentration of the impregna-ting solution were important factors on iodine adsorption value of activated carbon. The best conditions of pre-paring activated carbon the activation temperature of 635℃,activation time of 35 min,the mixing ratio of 4 :l,mass concentration of the impregnating solution of 40%.The iodine adsorption value was 1383.5 mg/g,which was consistent with the predicted values. The structure and morphology of samples characterized bySEM. The specific surface area and pore-size distribution calculated by the methods of BET and BJH, respec-tively. The activated rice husk carbon exhibit a high specific surface area of 1566.1m /g,average pore diam-eter of 2. 05 nm ,total pore volume of 0.80 cm’/ g.
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