Removal Cu(II) and Pb(II) Ions by Modified Bentonite with Nd-TiO2 and Some Organic Polymers

In order to increase adsorption capacity, Nd-TiO2/PEG/Bentonite and Nd-TiO2/PVP/Bentonite nanocomposites were synthesized by PEG and PVP, with sol-gel method. Microstructure nanocomposites were investigated by XRD, FESEM and EDS analyses. These analyzes confirmed the expected structure and formation of anatase titania phase. Synthetic nano-sorbents used to removal of Cu II and Pb II ions from water. The affective removal parameter was optimized and that contact time for TiO2/PEG/bentonite and TiO2/PVP/bentonite nanocomposites is 30 and 60 seconds, respectively, and for both nanocomposite, sorbent amount, temperature and pH were 0.005 g, 7 and 25℃, respectively. Investigation of interfering ions didn’t have any considerable impact on removal efficiency. The isotherm adsorption shows all the experimental data followed the Langmuir model.