This study focused on the synthesis of silica-coated magnetic Fe3O4 (Fe3O4@SiO2) nanoparticles and their application for improvement vapor-phase adsorption benzene. The Fe3O4@SiO2 were synthesized according to co-precipitation method, while characterization was performed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) Brunauer-Emmett-Teller (BET) surface...

Abstract Alginate–zinc oxide (Alg–ZnO) biocomposite was synthesized and tested as a chromium ions Cr(VI) adsorbent for environmental applications. Alg–ZnO prepared by the interaction between sodium alginate biopolymer zinc nanoparticles (ZnO–NPs), modified wet chemical method. The solid adsorption characteristics of were characterized Fourier transform infrared spectroscopy (FTIR), X-ray diffra...

Adsorption of carbamate pesticide Methomyl by Co-Beta Zeolite particles prepared wet ion-exchange method from aqueous solutions was studied. The effect zeolite and concentrations, pH value, sintering temperature on removal an solution change methomyl concentration during the adsorption followed using UV-Visible spectrophotometer. Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy...

ABSTRACT In this study, the ability of chemically activated sugarcane bagasse (CASB) as a biosorbent for removing ibuprofen (IBP) from aqueous solution was evaluated. Sugarcane using hexane and methanol. The effects pH, contact time, IBP concentration, temperature were evaluated in batch studies. Higher removal rates found at pH 2.0. Kinetic studies indicated that biosorption follows pseudo-sec...

Insights from the molecular-level mechanism of sorption of organophosphate esters (OPEs) on carbon nanotubes (CNTs) can further our understanding of the fate and transport of OPEs in the environment. The motivation for our study was to explore the sorption process of OPEs on multi-walled CNTs (MWCNTs), single-walled CNTs (SWCNTs) and their oxidized counterparts (O-MWCNTs and O-SWCNTs), and its ...

Biosorption process is a promising technology for the removal of heavy metals from industrial wastes and effluents using low-cost and effective biosorbents. In the present study, adsorption of Pb(2+), Cu(2+), Fe(2+), and Zn(2+) onto dried biomass of red seaweed Kappaphycus sp. was investigated as a function of pH, contact time, initial metal ion concentration, and temperature. The experimental ...

The potential of economically cheaper cellulose containing natural materials like rice husk was assessed for nickel adsorption from aqueous solutions. The effects of pH, contact time, sorbent dose, initial metal ion concentration and temperature on the uptake of nickel were studied in batch process. The removal of nickel was dependent on the physico-chemical characteristics of the adsorbent, ad...

Jamil R. Memon, Saima Q. Memon, Muhammad I. Bhanger and Muhammad Y. Khuhawar 2 National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan Hi Tech Central Resource Laboratories, University of Sindh, Jamshoro, Pakistan. -------------------------------------------------------------------------------------------------------------------------------------------Abst...

The present work represents the biosorption of Cd(II) and Pb(II) from aqueous solution onto the biomass of the blue green alga Anabaena sphaerica as a function of pH, biosorbent dosage, contact time, and initial metal ion concentrations. Freundlich, Langmuir, and Dubinin-Radushkevich (D-R) models were applied to describe the biosorption isotherm of both metals by A. sphaerica biomass. The bioso...