화학공학소재연구정보센터
Korean Journal of Chemical Engineering, Vol.19, No.2, 277-284, March, 2002
Biosorption Characteristics in the Mixed Heavy Metal Solution by Biosorbents of Marine Brown Algae
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The biomass of nonliving, dried marine brown algae U. pinnatifida, H. fusiformis, and S. fulvellum harvested in the sea near Cheju Island, Korea were studied for their sorption ability of copper, zinc, and lead. The metal uptakes by biosorbent materials increased with increasing initial metal concentration and pH in the range of Ci 0.05-10mM. The higher metal uptakes were obtained in the range of pHs 4.0-5.3, 4.0-6.0, and 3.0-6.0 for copper, lead, and zinc, respectively. The metal uptakes by biosorbent materials decreased in the following sequence: U. pinnatifida> H. fusiformis>S. fulvellum. The maximum metal uptake values of U. pinnatifida for Cu(2+), Pb(2+), and Zn(2+) in the single metal solution are 2.58, 2.6, and 2.08 meq/g in the range of pHs 5.3-4.4, respectively. The metal uptakes by biosorbent materials in the mixed metal solution decreased greatly in comparison to each metal uptake in the single metal solution.
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