Homogeneous succinylation of cellulose acetate: Design, characterization and adsorption study of Pb(II), Cu(II), Cd(II) and Zn(II) ions

In this study, the removal of Pb(II), Cu(II), Cd(II), and Zn(II) ions from aqueous solutions was investigated using succinic anhydride modified cellulose monoacetate. first part, acetate successfully succinylated in a homogenous medium DMF 4-dimethylaminopyridine (DMAP) as catalyst. The obtained material (AcS) analyzed by FTIR CP/MAS 13 C NMR Spectroscopy, thermogravimetry analysis DRX patterns. titration method used to determinate degree hydroxyl group substituted carboxyl (DS) found be 1.36. second Bach technique study effects pH, contact time, concentration metals, ionic selectivity regeneration. Maximum sorption capacities AcS for were 241.81, 133.76, 156.61 73,58 mg.g -1 , respectively. Langmuir isotherm pseudo order kinetic models provided best fit experimental data metal ion sorption. nature adsorption process exothermic spontaneous with negative values ΔG° ΔH°. Regeneration accomplished nitric solution showed high stability good recyclability.