Removal of Molybdate Ions in Water on a Newly Synthesized Imidazolium-based Poly (ionic liquid)

The natural biological water system has been seriously damaged due to the discharge of wastewater containing too much molybdenum, endangering the life and health of animals and plants. Imidazolium-based poly (ionic liquid) was synthesized by grafting copolymers of styrene and 1-(chloromethyl)-4-vinylbenzene into N-methylimidazole, N-ethylimidazole and N-propyl imidazole, followed by characterization with the use of nuclear magnetic resonance spectrometer and Fourier transform infrared spectrometer. How the Imidazolium-based poly (ionic liquid) could recover MoO42- from sewage was investigated. The pH, reaction temperature, reaction duration, adsorbent dose, and interfering ions were all tuned for MoO42- adsorption conditions. Nitric acid can regenerate the Imidazolium-based poly (ionic liquid) loaded with MoO42-. Both the adsorption kinetics and the adsorption isotherm exhibit good agreement with the quasi second-order kinetic model and the Langmuir isotherm model, respectively.Imidazolium-based poly (ionic liquid) have a special reusability when compared to polyaniline-modified bentonite, iron-based nanomaterials, and & gamma;-Fe2O3 nanomaterials. The results reveal that Imidazolium-based poly (ionic liquid) has a strong recovery effect on trace molybdenum from wastewater, which makes it an effective adsorbent with industrial application value.