| With the intensification of human activities at lake basin, a lot of nutrients flow into the water through a variety of ways. And it makes increasingly concerned about the level of nutrients in water. Water eutrophication resulted in the proliferation of algae growth, seriously polluted of water, the destroyed of tourism landscape. So the state has invested a lot of money, but it does not completely solve the algae problem without secondary pollution from the practical application point of view.In this paper, we took polystyrene microspheres as a floating carrier, and deposited mesoporous nano-composite magnetic materials on its surface as the primary means of removing algae. The experiment mainly divided into three parts:(1) Prepare the polystyrene microspheres with dispersion polymerization.(2) Prepare the mesoporous TiO2coated Fe3O4via sol-gel method, and modify its surface.(3) Complex these two composite materials, and apply in the adsorption process of cyanobacteria.In the experiment research, we selected styrene as monomer, AIBN as coupling agent, PVP as stable agent, prepared polystyrene micro-beads through dispersion polymerization. The particles have a good dispersion, and the particles size is uniformity. VTMS modified mesoporous magnetic nano-composite particle deposition to the surface of PS Microsphere. We can find that the preparation of nanoparticle composite at silane capacity of1mL,12h in aqueous alcohol reaction time works best. Finally, the two kinds of materials were used for adsorption of cyanobacteria, it turned out that the magnetic floating mesoporous composite materials had a better adsorption effect on blue-green algae. And we can use the external magnetic field to take the magnetic composite particles out of the water with blue-green algae, and will not cause pollution to the water. |
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