Metal recovery by aged beads prepared using cell-suspension from the waste of beer fermentation broth |
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Authors: | Seong Bok Choi Joong Kon Park |
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Affiliation: | (1) Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, Korea |
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Abstract: | Lead, copper, and cadmium were adsorbed onto aged calcium alginate beads containing cell-suspension from the waste of beer
fermentation broth. Beads prepared by adding 0.6% (w/v) sodium alginate into the cell suspension from the waste of beer fermentation
broth and making the cell suspension drop into the 1% (w/v) calcium alginate solution were stored in the 1% (w/v) calcium
chloride solution for 1 year. The specific metal uptake of the aged cell-suspension immobilized bead was 312 mg Pb2+, 158 mg Cu2+, and 112 mg Cd2+/g bead dry weight at pH 7.5 of the metal solution, respectively. The relation between the specific metal uptake by the aged
cell-suspension immobilized beads and the equilibrium metal concentration was nonlinearly regressed and well described by
the Freundlich isotherm. The specific cadmium uptake capacity of aged cell-suspension immobilized beads was between the specific
cadmium uptake capacities of commercial beads Duolite GT-73 and Amberite IRA-400 and higher than those of the fresh Saccharomyces cerevisiae ATCC 834 and Saccharomyces cerevisiae ATCC 24858 immobilized beads. |
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Keywords: | Biosorption of Heavy Metals S cerevisiae Cell Immobilized Bead Cell Suspension Waste of Beer Fermentation Broth |
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