Effect of dosage of composite cellulose-chitosan-magnetite-alginate hydrogel beads bio-sorbent on copper removal.

A composite hydrogel beads bio-sorbent was introduced through this work by cross-linking cellulose, chitosan, magnetite, and alginate (CCMA) for removal of heavy metal copper. The effect of CCMA's dosage and contact time in adsorbate solution was also studied through this work to determine the highest percentage of copper metal, Cu (II) removal. Based on the effect of CCMA dosage and adsorption contact time in copper solution studied, an excellent percentage of Cu (II) removal of 97.47% was achieved at 4g of CCMA dosage and 24-hour contact time to reach its adsorption equilibrium state. Moreover, the thermal properties and stability of CCMA investigated through TGA analysis in this work revealed that the thermal stability of CCMA was significantly improved with a high mass residual of 92.35% compared to cellulose and chitosan powder. Thus, it is proven that the cross-linking of cellulose-chitosan-magnetite-alginate (CCMA) in this work was successfully done. [ABSTRACT FROM AUTHOR]