Removal of cadmium and lead ions from aqueous solutions by novel dolomite-quartz@FeO nanocomposite fabricated as nanoadsorbent.

The elimination of heavy metal ion contaminants from residual waters is critical to protect humans and the environment. The natural clay (dolomite and quartz) based composite FeO nanoparticles (DQ@FeO) has been largely explored for this purpose. Experimental variables such as temperature, pH, heavy metal concentration, DQ@FeO dose, and contact time were optimized in details.

Multifunctional cobalt oxide nanocomposites for efficient removal of heavy metals from aqueous solutions.

In this study, co-precipitation synthesis of natural clay (NC) with CoO nanoparticles (NPs) is carried out to elaborate the super NC@CoO nanocomposites with admirable salinity confrontation, environmental stability and reusability, to eliminate heavy metal pollution such as toxic Pb(II) and Cd(II) ions. The advantages of using the NC@CoO adsorbent are easy synthesis and biocompatibility. In addition, NC@CoO can keep an excellent adsorption capacity by taking into account various environmental parameters such as the pH solution, NC@CoO dose, adsorption process time and the initial heavy metals concentration.

Green synthesis of AgO nanoparticles using Punica granatum leaf extract for sulfamethoxazole antibiotic adsorption: characterization, experimental study, modeling, and DFT calculation.

Silver oxide (AgO) nanoparticles (NPs) were generated by synthesizing green leaf extract of Punica granatum, and afterwards they were used as adsorbent to remove the antibiotic additive sulfamethoxazole (SMX) from aqueous solutions. Prior of their use as adsorbent, the AgO NPs were characterized by various methods such as X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), scanning electron microscopy/energy-dispersive X-ray (SEM-EDX), and transmission electron microscopy (TEM). The AgO NPs were found to be spherically shaped and stabilized by the constituents of the extract.