Preparation of adsorbent with magnesium sulfate and straw pulp black liquor and its phenol adsorption properties |
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| Authors: | Lugang Guo Haizeng Wang |
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| Institution: | 1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education,Ocean University of China, Qingdao 266003, P R. China;Institute of Automation of the Chinese Academy of Sciences, Beijing 100080, P R. China;Beijing Municipal Institute of Science and Technology Information, Beijing 100011, P R. China
2. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education,Ocean University of China, Qingdao 266003, P R. China |
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| Abstract: | A magnesia adsorbent was prepared from straw pulp black liquor and magnesium sulfate for the first time, and its adsorption
of phenol from aqueous solution was examined. The characteristics of the adsorbent were tested through chemical analysis,
surface analysis, X-ray diffraction and FT-IR spectroscopy. The effects of various factors, such as dose, adsorption time
and adsorption temperature, on phenol adsorption behavior were studied. The results show that the adsorption processes can
be fitted to the isotherm Langmuir model very well. It was found that the adsorption process was strongly influenced by temperature
and the optimal temperature for phenol removal was 40 °C. The optimum adsorption time was 10 min, and desorption would happen
afterwards. Between the models of Langmuir and Freundlich, the adsorption process of phenol onto magnesia fitted the Langmuir
equation better. |
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| Keywords: | straw pulp black liquor magnesium sulfate adsorbent phenol |
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