At present, there are problems with the quality of the water source contamination of heavy metals from industrial. The absorbent used in wastewater treatment, heavy metal contaminated coal kamman. But because it is expensive. Permanent make up, thus originating the concept by Chitosan from shrimp shell, white came to absorb lead compounds that are present in water bodies to study the possibility to absorb substances from the shells of shrimp, white lead. Because animal nuts with Chitosan and Chitosan can absorb heavy metals.
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