Offgas analysis and pyrolysis mechanism of activated carbon from bamboo sawdust by chemical activation with KOH

作者: Yong Tian , Ping Liu , Xiufang Wang , Guoying Zhong , Guanke Chen

DOI: 10.1007/S11595-011-0157-9

关键词: Composite materialGas analyzerSawdustActivated carbonBambooInduction periodPyrolytic carbonThermogravimetric analysisChemistryChemical engineeringPyrolysis

摘要: Bamboo sawdust was used as the precursor for multipurpose use of waste. Offgases released during activation process bamboo by KOH were investigated quantitatively and qualitatively a gas analyzer. TG/DTG curves pyrolysis with different impregnation weight ratios (KOH to bamboo) obtained thermogravimetric Pyrolysis mechanism proposed. The results showed that offgases composed CO, NO, SO2 hydrocarbon concentration 1 372, 37, 86, 215 mg/L, respectively. Thermogravimetric analysis indicated pyrolytic mainly experienced two steps. first low temperature step (lower than 300°C), which pre-activation induction period. second high step(higher 550°C), radial followed pore production. key control distribution final product.

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