Removal of lanthanum and cerium from aqueous solution using chitosan-functionalized magnetite-pectin
Makaleler > Tam Makale · 2023
Yazarlar: Abdoul-Rachid Chaibou Yacouba, Aylin ORAL, Şenol SERT, İkbal Gözde KAPTANOĞLU, Naimah Ibrahim, Sabriye Yuşan, Şule Aytaş
Greater South Information System, Uluslararası, 2023
DOI: 10.60692/wtdr1-2fa40
Özet
Abstract In this study magnetite-pectin-chitosan (MPC) nanocomposite was synthetized using a partial reduction co-precipitation method. The structure and morphology of the material were characterized by scanning electron spectroscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR) and vibrating sample magnetometry (VSM). The adsorption of Lanthanum and Cerium ions onto MPC was studied in a batch system as a function of initial pH of solution, contact time, initial concentration and temperature. The La(III)/Ce(III) ions was increased when the initial pH of the solution increased. The optimum pH for La/Ce adsorption was 5 and the maximum adsorption was reached within 30 min. The thermodynamics parameters such as enthalpy change (ơH), entropy change (ơS) and Gibbs free energy change (ơG) were calculated. The results suggested that the adsorption was exothermic and spontaneous. To determine the adsorption characteristics, models of Langmuir, Dubinin-Radushkevich, Freundlich, Temkin and Flory-Huggins adsorption isotherms were applied. Langmuir isotherm model described the data of adsorption very well. The adsorption capacity was found to be 8.17 mg/g and 9.72 mg/g for lanthanum and cerium, respectively.