ABSTRACT
A novel chelating resin/mesoporous silica composite material (MFT/SBA-15) was synthesized via a co-condensation method, and applied in the treatment of elimination of arsenic (As) contaminated water. Kinetics results illustrated that As adsorption onto MFT/SBA-15 obeyed the pseudo second-order model and the chemical adsorption was the rate limiting step in the adsorption process. Thermodynamics results presented that As adsorbed onto MFT/SBA-15 obeyed the Langmuir isothermal adsorption model and carried the characteristic of single molecular layer adsorption. The formation of coordination bond (C = S→As) between the lone electron pairs of S atom and As during the adsorption processes led to the fixation processes of As, further illustrated that the novel mesoporous MFT/SBA-15 materials combine both the advantages of chelating resins and mesoporous silica together, and have excellent application potentials in the As wastewater treatment.
