Preparation of activated carbon from paper mill sludge by KOH-activation |
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Authors: | Hwa-Young Kang Sang-Sook Park Yu-Sup Rim |
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Affiliation: | (1) Dept. of Civil and Environment, Hanyeong College, 19, Yeoseo-dong, Yeosu, 550-704, Korea;(2) Division of Civil and Environmental Engineering, Sunchon National University, 315, Maegok-dong, Suncheon, 540-742, Korea;(3) Dept. of Bio-environmental Chemistry, Sunchon National University, 315, Maegok-dong, Suncheon, 540-742, Korea |
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Abstract: | The purpose of this study is the preparation of activated carbon using paper mill sludge collected from biological wastewater
treatment plant. The char produced from pyrolysis of paper mill sludge was chemically activated with potassium hydroxide.
A systematic investigation of the effect of activation agent ratio, activation temperature and time on the properties of the
char was carried out in a rotary kiln reactor. The chemically activated carbons were characterized by measuring iodine and
methylene blue number and specific surface area. The activated carbon prepared from char of paper mill sludge in this study
had maximum iodine and methylene blue number of 726.0 mg/g and 152.0 mg/g, and specific surface area of 1,002.0 m2/g, respectively. The result of estimation on adsorption capacities of metals, the Freundlich isotherms, yields a fairly good
fit to the adsorption data, indicating a monolayer adsorption of metals onto activated carbon prepared from char of paper
mill sludge using a potassium hydroxide as the activating agents. |
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Keywords: | Activated Carbon Chemical Activation Adsorption Paper Mill Sludge |
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