A number of selected, nonliving, inactivated materials of biological origin, such as algae, bacteria, and their products, have been screened for their ability to adsorb metals from a solution. Different biomass types exhibited different performance for the metal species tested. The pH for the test solutions also influenced biomass adsorption performance (see Table 3.8.4).

The biosorptive uptake of chromium and gold was rather specific. It was not affected by the presence of other cations such as Cu2+ UO2+, Ca2+, and Ni2+ or anions

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