Removal of metals from their complex solutions by fly larva shells

摘要

The fly (Musca Domestica) larva shells are formed in rather big amounts as side-product in process of treatment of food industry wastes. After treatment with sodium hydroxide these shells absorb heavy metal ions from metal ligands containing solutions such as Cu(II)-ammonia, etc. In this way the heavy metal ions from complexing solutions can be recovered completely, i.e. the residual concentration of metal ions does not exceed the limited concentrations in basins. The concentration of ligands itself as a rule does not have considerable influence of completeness of metal removal.