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生物质化学工程

生物质化学工程 ›› 2010, Vol. 44 ›› Issue (1): 1-4.

• 论文 •    下一篇

微波加热化学活化法制备活性炭的优化工艺研究

谭非, 王彬元, 林金春, 黄彪   

  1. 福建农林大学, 材料工程学院, 福建 福州 350002
  • 收稿日期:2009-10-20 修回日期:1900-01-01 出版日期:2010-01-30 发布日期:2010-01-30
  • 通讯作者: 黄 彪,教授,博士生导师,从事生物质的研究与利用。

Optimization Technology for Preparation of Activated Carbon with Chemical Activation by Microwave Heating Method

TAN Fei, WANG Bin-yuan, LIN Jin-chun, HUANG Biao   

  1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
  • Received:2009-10-20 Revised:1900-01-01 Online:2010-01-30 Published:2010-01-30

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摘要： 研究了微波加热条件下碳酸钾活化制备活性炭的工艺流程。以碳酸钾为活化剂,微波为热源,采用正交试验,研究了浸渍时间、活化剂浓度、微波功率、微波加热时间对活性炭产品性能碘吸附值、亚甲基蓝吸附值、得率的影响规律,得到了最佳工艺条件,即微波功率600 W、微波加热时间6 min、碳酸钾浓度0.20 g/mL、浸渍时间24 h。制得活性炭的碘吸附值可达1189.68 mg/g、亚甲基蓝吸附值190 mL/g、得率29.48%,在该工艺条件下,制备的活性炭试样比表面积为1186.10 m2/g,总孔容积0.624 cm3/g,微孔容积0.407 cm3/g,吸附性能较国家标准有所提高。

关键词: 微波加热, 松木屑, 活性炭, 吸附

Abstract: This paper studied the potassium carbonate as the chemical activator for activated carbon preparation by microwave heating. With potassium carbonate as the activator and microwave as the heat source, the effects of impregnating time, chemical activator concentration, activation time and microwave power on the adsorption properties of activated carbons were studied by orthogonal test and the optimal results were obtained. The optimal results are microwave power 600 W, microwave time 6 min, chemical activator concentration 0.20 g/mL and impregnating time 24 h.Iodine adsorption value of activated carbon reached 1189.68 mg/g and ethylene blue discoloring ability of activated carbon reached 190 mL/g,and the yield was 29.48%. The specific surface area of activated carbon was 1186.10 m2/g, the total pore volume was 0.624 cm3/g and the micropore volume was 0.407 cm3/g. The adsorption properties exceeded the national standard of activated carbon.

Key words: microwave heating, pine sawdust, activated carbon, adsorption

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