Kinetic studies for the remediation of some pollutants from real wastewater onto carbon nanotube

The resistance of the intraparticle diffusion of different pollutants into carbon nanotubes (CNTs) is considered the main challenge in wastewater treatment. Hence, in this investigation, the authors discuss the kinetic parameters affecting the diffusion of different pollutants from municipal wastewater into the CNT matrix. Different models (pseudo-first-order, pseudo-second-order, intraparticle diffusion, Avrami and mixed first- and second-order models) were studied to describe the adsorption characteristics of the reduction in chemical and biochemical oxygen demand of municipal wastewater in addition to the kinetic profile of some nutrients and heavy metals ions in the existence of CNTs. Finally, the mechanism of sorption of these main pollutants was proposed.