BIOSORTION AND DESORPTION OF CADMIUM(II) BY BIOMASS OF LAMINARIA JAPONICA

摘要

Biosorption and desorption properties of cadmium(II) form aqueous solutions by the biomass of marine alga Laminaria japonica were investigated. Results indicated that the uptake capacities were solution pH dependent and a maximum uptake capacity of about 1.3 mmol g-1 (dry weight) was observed at pH 6. The adsorbed cadmium cannot be desorbed by distilled water, but it can be effectively recovered by using acidic or EDTA solutions.