• Shyam.R.Khairkar
• Chandrakant U. Chavan
• Arun.R.Raut

Chitosan, a biopolymer produced from crustacean shells, has applications in various areas, particularly in drinking water and wastewater treatment due to its ability to remove metallic ions from solutions. The adsorption capacity of chitosan depends on a number of parameters: deacetylation degree, molecular weight, particle size and crystallinity. The purpose of this work was to study the adsorption of metal on chitosan produced from shrimp shells at a laboratory level. The experimental work involved the determination of the adsorption isotherms for each metallic ion in a batch system. In present research work natural bio polymer “Chitosan” was grafted onto Acrylic acid and Acrylamide and adsorption of some heavy metal studied by batch method. Synthesis of grafted chitosan supersorbent was synthesized by radical polymerization method. The adsorption of heavy metal cations, Zn(II) and Cu(II), from aqueous solution by newly-synthesized superabsorbent hydrogel of chitosan-g-poly (acrylicacid-co- acrylamide) was investigated .The objective of the present work has been to study the removal of Zn(II) and Cu(II), from aqueous solution using chitosan. Equilibrium and kinetic experiments at different metallic ion concentrations and with different particle sizes have been performed. . The experimental data have been tested with the Langmuir equation, and simplified kinetic models have been applied to determine the rate-controlling mechanisms for the adsorption process. The resulting isotherms were fitted using the Langmuir model and the parameters of the equation were determined. Kinetic studies of adsorption for different metallic ions at different concentrations and with different particle sizes were performed in batch and column systems. The results showed that the adsorption capacity depends strongly on pH and on the species of metallic ions in the solution.

Hydrogel, chitosan, superabsorbent, acrylamide, acrylic acid, Heavy Metal, Bio- adsorption

"Chitosan Grafted Polymer Composite as Heavy Metal Extractant", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 3, page no.f1-f7, March-2023, Available :http://www.jetir.org/papers/JETIR2303501.pdf

"Chitosan Grafted Polymer Composite as Heavy Metal Extractant", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 3, page no. ppf1-f7, March-2023, Available at : http://www.jetir.org/papers/JETIR2303501.pdf