| Anions pollutants are wide spread in environmental which quite a number of them are harmful to the nature and human beings at very low concentrations. At present, there are many treatments for those anionic pollutants. And the treatments are mostly aimed at high concentration of anionic system which are not effective to the low concentration especially trace anion wastewater. Ionic liquid is an atmospheric pollution-free "green solvents" which developing rapidly in recent years and it has been widely used in various areas to replace the traditional volatile organic solvents. But when used alone, Ionic liquid has many shortcomings such as high viscosity, cumbersome of phase separation, difficult to recovery, easy to dissolve into the water and so on which of those can cause pollution.In this paper, surface bonding cetyl sulfonated ionic liquid polymer has been synthesized by chemical approach as a novel water treatment agent. The material has good separation and enrichment performance as regular ionic liquid has, and it overcoming existing problems when the ionic liquids were used alone. We can conclude from the result of the research that the novel material can selective adsorpts anion pollutants, especially effective to low concentration of anion pollutants. Moreover, there are advantages such as high adsorption quantity, quick absorption speed, mild conditions, stable nature, easy to use. The specific research contents are as follows:1Surface bonding cetyl sulfonated ionic liquid polymer has been synthesized was characterized by Proton Nuclear Magnetic Resonance Spectroscopy (’HNMR), Fourier Transform Infrared Spectroscopy (FTIR), Scanning electron microscope (SEM) and Thermogravimetry-Differential Scanning Calorimetry (TG-DSC). The results show that the surface of the new material formed a new functional resin which is similar to chlorinated cetyl sulfonated ionic liquid. And the surface of the material is lamellar which is in favor of the adsorption of pollutants. Moreover, Selective adsorption properties and chemical stability was studied.2The following work was respectively in the static and dynamic conditions with Cr (VI) as the research object of inorganic anions. The effects of initial concentration of the pollutants, temperature on the adsorption, initial pH of the pollutants were investigated. And adsorption kinetic adsorption capacity, adsorption isotherm, eluant and more technical parameter were studied. Moreover, the influence of injection flow rate, elution to the adsorption and desorption of the miniature extraction column which was preparation by the new material were studied.The results showed that the removal efficiency of Cr(VI) under different pH was unchanged; Under the experiment condition,the maximum static adsorption capacity was found to be90.9mg/g for Cr(VI); The minimum concentration of recycling adsorption for Cr (VI) can reach0.0004mg/L; The recovery rate of0.004mg/L Cr (VI) was100%which was better than traditional anion exchange resin; The micro separation column made by the new material was easy recovery, and could be recycled.3MO and OIV were on behalf of organic anions.The effects of initial concentration of the pollutants, temperature on the adsorption, initial pH of the pollutants were investigated. And adsorption kinetic adsorption capacity, adsorption isotherm, and parameters of the miniature separation column were studied. The results showed that the best adsorption effect can be reached when the pH of the dyes was greater than the pKa of the dyes while the best desorption effect can be reached when the pH of the dyes was less than the pKa of the dyes; Under the experiment condition, after30min complete absorption can be achieved; The maximum static adsorption capacity was found to be62.8mg/g for methyl orange,294.12mg/g for orangelV, espectively. The removal efficiency of organic dyes for the novel material was better than traditional anion exchange resin in the low concentration. Moreover, the novel material was easy recovery, and could be recycled.4The adsorption mechanism of the novel material which learned form its’surface structures was ion associating mechanism. And this conclusion was further proved from the result of batch experiment. As a result of excellent ion association, the novel material has an eminent preferential adsorption for anion pollutants in low concentration. And this conclusion was got by determinate the adsorption ion association constant of Cr(VI), MO and OIV.It can be concluded that the novel material can be used in pretreatment of environmental samples and advanced treatment for anion pollutants. |
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