Enhanced removal of Chloramphenicol drug by low cost superabsorbent hydrogel nanocomposite: Optimization, isotherm, and thermodynamic modelling non-linear

In this work, an eco-friendly, stable, simple, new super adsorbent adsorption properties based on biopolymer sodium alginate was successfully deliberated by a combination of a simple crosslinking method. We prepared two hydrogel including (SA-g-P(Ac-co-AM) hydrogel and the second hydrogel after loading CNT/ZnO onto   hydrogel.  These new hydrogel surfaces were prepared from two monomers (acryl acid and acrylamide) to remove Chloramphenicol CHZ drug. The physical characterizations of new super adsorbent hydrogel nanocomposite were evaluated by XRD, FTIR, TGA, EDX and TEM. The practical experiments involved calculation of the best wavelength and study of best condition of adsorption factors such as effect of equilibrium time, weight of hydrogel nanocomposite, temperature solution, pH solution, and adsorbent regeneration experiments (Desorption). The removal percentage of CHZ drug   increased from ۵۵.۴۵ to ۸۹.۸%, and adsorption capacity was changed from ۶۵.۵ to ۱۱۰ mg g-۱ on to hydrogel nanocomposite. The isotherm Freundlich and isotherm Langmuir were too introduced. All data followed the model Freundlich isotherm in the presence of CHZ drug. The change enthalpy (∆H) value was positive indicating the adsorption method endo-thermic presses and spontaneous of change Gibes free energy (∆G) negative value, as well as positive value of   change entropy (∆S).

کلیدواژه ها:

hydrogel ، Nanocomposite ، Drug ، Chloramphenicol ، Isotherm ، Thermodynamic