**5.4 Effect of dosage of adsorbent on the removal of heavy metal ions**

The synthesis of a copolymer composed of itaconic acid (IA) and acryl amide (AAm) [p(IA-co-AAm)] has been reported by Sharma and Tiwari [45]. The sample was successfully tested for the removal of Mn2+ ions from contaminated water at various environmental conditions. They studied and reported briefly about the effect of adsorbent dose on the removal of Mn2+ ions. It was observed that increasing the absorbent dose ranging from 0.04 to 0.10 g increases the % removal of the Mn2+ ions from contaminated wastewater.
