微波加热化学活化法制备活性炭的优化工艺研究

Biomass Chemical Engineering(2010)

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Abstract
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1 189.68 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1 186.10 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。
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Key words
activated carbon,adsorption,pine sawdust,microwave heating
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