Kinetic and isotherm study of Ni-MOF/Magnetite nanoparticles adsorption capacity as green synthesized adsorbent towards rhodochrome (Kammererite)

Abstract

This study presents a novel approach by batch adsorption method for the removal of Rhodochrome (Kammererite) from wastewater via a sustainable, environmentally friendly, natural-dependent synthesis to produce Ni/MOF/tea-magnetite nanoparticles as adsorbent. No approach for the elimination of this category of chlorite was discussed using the adsorption batch method, which is highly efficient in relation to cost and time, as well as being rapid and environmentally benign. The study will also consider pH, nanoparticle dose, dye concentration, agitation speed, temperature, and contact time to evaluate how this influence removal efficiency, as well as isotherms, kinetics, and nanoparticle reusability as a cost-saving strategy. The morphology and microstructure of the adsorbent material were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, zeta potential measurement, and X-ray diffraction (XRD).The optimum removal parameters were pH 8, a duration of 5 min at 600 rpm, and 0.07 g of nanoparticles, resulting in a clearance rate of 93%. Moreover, it was shown that the material may be utilized for three cycles with a clearing rate of 85%. The adsorption process can be conducted without modifying the temperature. The adsorption isotherm and kinetics studied was evaluated using the different kinetics study, Langmuir, Freundlich, DKR, and Temkin models. The removal procedure was determined to comply with the Temkin model and pseudo second order reaction.