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Biosorption of Uranium Heavy Metals: Technology and Methods
Abstract
Uranium is a seriously threatening heavy metal because of its high toxicity and radioactivity. Uranium contaminates surface and groundwater. Metal removed from aqueous solutions often leads to effective metal concentration. Apart from the slow natural process of metal mineralization, removal of heavy metals is attained when the metal becomes concentrated at a point that it is either returned to the process or resold. Physical adsorption takes place due to van-der Waals' forces. Conventional methods used for uranium removal are expensive and produce huge amount of sludge (consists of toxic substances) which blockade the membrane. In this chapter, uranium removal by biosorption method is discussed. Uranium removal is attained by the use of either living microorganisms (bacteria, algae, and fungi) or their dead biomasses.
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