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KMID : 1024519990080030387
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Journal of the Environmental Sciences
1999 Volume.8 No. 3 p.387 ~ p.391
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Biosorption of Pb[2+] and Cr[3+] by using Sargassum hornei
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Suh Kuen-Hack
Ahn Kab-Hwan
Cho Moon-Chul
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Abstract
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and uptake capacity by Sargassum horneri was 185.5 mg /g biomass and 102.6 mg /g biomass, respectively. An adsorption equilibria were reached within about 0.5 hr for and 1 hr for . The adsorption parameters for and were determined according to Langmuir and Freundlich model. With an increase in pH values of 2 to 5, uptake was increased, however uptake jwas constant. The selectivity of mixture solution showed the uptake order of >>>. and adsorbed by S. horneri could be recovered from 0.1M HCl, 0.1M and 0.1M EDTA by desorption process, and the efficiency of desorption was above 98%, whereas the efficiency of desorption was below 34%.
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KEYWORD
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biosorption, Sargassum horneri, heavy metal, selectivity
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