Author： Zhao M. Duncan J.R.
Publisher： Springer Publishing Company
ISSN： 0141-5492
Source： Biotechnology Letters, Vol.19, Iss.10, 1997-01, pp. : 953-955
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Abstract
Saccharomyces cerevisiae cross-linked with formaldehyde exhibited good mechanical strength and rigidity in continuous-flow operation. Cu, Zn and Cd were effectively removed from aqueous solutions by the biomass at pHs 5.3, 6.0 and 6.7, respectively. Complete recovery of the bound metals was achieved by washing the column biomass with 0.1 M HCl. The metal uptake capacity (quantity of metals accumulated by one gram biomass) of regenerated biomass was similar to that in the first cycle, with 8 (cyc.1) and 8.1 mg/g (cyc.2) for Cu and 7.1 and 7.2 mg/g for Zn. Therefore reuse of the yeast would be possible.
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