Fabrication of chitosan-g-poly(acrylamide)/Cu nanocomposite for the removal of Pb(II) from aqueous solutions

In this study, CPA/Cu nanocomposite was applied as significant biosorbent for effective removal of Pb(II) from aquatic solution in environmental conditions. CPA/Cu was characterized through differ instrumental techniques like as x-ray diffractometer (XRD), SEM, FT-IR spectroscopy and TEM. Here, SEM and TEM images are clearly showed porous structure of the CPA/Cu nanocomposite within nanodimension. Various adsorption parameters like metal ion concentration, adsorbent dosage, pH effect, contact time and temperature effect were optimized. Langmuir and Freundlich models were studied to simulate the adsorption of Pb(II) through experimental data. Freundlich model was initiated for suitable qe of 38.93 mg/g. The kinetic study of nanocomposite was defined by pseudo-second-order and other thermodynamic parameters like as ΔS°, ΔH° and ΔG° were obtained − 3.881 kJ/mol, − 51.58 kJ/mol and − 168.12 J/mol/K, respectively. The spontaneous and exothermic behavior of the reaction was inveterate by negative response of ΔG° and ΔH°.