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KMID : 0382419980240010098
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Korean Journal of Environmental Health Society
1998 Volume.24 No. 1 p.98 ~ p.103
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A Comparative Study for Removal of Mercury and Lead by Microorganisms
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Suh Jung-Ho
Suh Myung-Gyo
Lee Kook-Eui
Kwak Young-Kyu
Kang Shin-Mook
Choi Yoon-Chan
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Abstract
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A study on the removal of mercury and lead by microorganisms, Saccharomyces cerevisiae and Aureobasidium pullulans, was performed, in which the comparison of adsorption model between these two heavy metals was done. The amounts of mercury removed were more than those of lead in both microorganisms. In case of mercury, the adsorption isotherm of S cerevisiae was accorded with Langmuir model but A. pullulans was followed to Freundlich model. In the case of lead, however, the adsorption isotherm had opposite results. The adsorption rate of mercury to S. cerevisiae was faster than that of A. pullulans, but in the case of lead, it revealed contrary results. It seems, therefore, that the type of microorganisms used as biosorbents should be selected differently with the type of heavy metals removed for applying these to real adsorption process.
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