Preparation of activated carbon from sawdust by zinc chloride activation |
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| Authors: | Huiping Zhang Ying Yan Lichun Yang |
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| Institution: | (1) Institute for the Environment, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;(2) Department of Environmental Engineering, Sun Yat-sen University, 135 Xin Gang Xi Road, Guangzhou, China;(3) Department of Civil Architectural and Environmental Engineering Department – EWRE, The University of Texas at Austin, 1 University Station C1786, Austin, TX 78712-0280, USA;(4) Department of Civil Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong; |
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| Abstract: | A series of activated carbons were prepared from sawdust by zinc chloride activation in different operation conditions. The
effects of operation parameters such as impregnation ratio, activation temperature and time on the adsorption properties of
activated carbons were measured and analyzed in order to optimize these operation conditions. The experimental results show
that under the experimental circumstances studied, both the yield and the adsorption for iodine and methylene blue of activated
carbon can reach a relatively higher value in the chemical activation process with the impregnation ratio of 100% ZnCl2/sawdust in the activation temperature of 500 °C carbonized for 60–90 minutes which are the optimum activation conditions
in making wood activated carbon. The most important operation parameter in chemical activation with zinc chloride was found
to be the impregnation ratio. |
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