Investigation of Adsorption Optimization, Kinetic and Isotherm Behaviors of 60Co and 152+154Eu Radioisotopes from Nuclear Radioactive Wastewater onto a Novel Co0.5Ni0.5O–Co2Mo3O8–CuO–ZnO Perovskite Metal Oxides Nanosorbent

Abstract

AbstractHerein in this study, a new nanosorbent consisted of perovskite cobalt–nickel oxide Co0.5Ni0.5O and perovskite cobalt–molybdenum oxide Co2Mo3O8, copper oxide CuO, and zinc oxide ZnO, has been synthesized. The structural and morphological properties of the nanosorbent were established by using FT-IR, PXRD, TGA, HR-TEM, SEM, and EDX. The nanosorbent was implemented to adsorb 60Co and 152+154Eu radioactive isotopes under diverse conditions using different pH values, contact times, radioactive nuclides concentrations, and temperatures. The highest adsorption removal for both radionuclides was obtained at pH 6.0 as 83.65 and 122.50 mg/g for 60Co(II), and 152+154Eu(III), respectively. The adsorption models for 60Co(II) were fitted with Temkin only, on the other hand, the adsorption of 152+154Eu(III) was fitted with four adsorption models. The kinetics for 60Co(II) were fitted with the Pseudo first order (PFO), Pseudo second order (PSO), and Intraparticle models on the other hand 152+154Eu(III) were found to agree with the Pseudo first order (PFO) and intraparticle models.