Preparation And Application Of Aromatic Compounds Involved In Constructing Adsorbent Materials

In this paper,aromatic polymers were used to construct the functional materials with excellent adsorption properties or dyes and heavy metals,and the adsorption mechanism of the materials to pollutants was discussed.Based on the influence of the five-membered aromatic polymer on the adsorption material,the paper further explored the adsorption of the six-membered ring aromatic polymer in the strcture,and its superiority in structure and performance.The detailed research content divied into three parts:Aromatic poly ionic liquids were synthesized by 1-vinylimidazole and 2-chloroethylamine hydrochloride,and then polymerization with sugarcane bagasse,SCB/PIL nano materials was prepared.The structure of SCB/PIL was characterized by FTIR,SEM,TGA,and XRD.The test results showed that the SCB/PIL is rough surface with flake and has good thermal stability.The effects of initial solution pH,contact time,dose,and concentration of solution and coexisting ion on the adsorption of Orange? and hexavalent chromium onto SCB/PIL were investigated.Through the adsorption kinetics and adsorption isotherm,discussed the adsorption principle of Orange? and hexavalent chromium to SCB/PIL.The results show that,SCB/PIL of Orange?followed second-order kinetics equation and Freundlich adsorption isothermal adsorption model,and SCB/PIL of hexavalent followed second-order kinetics equation and Langmuir adsorption isothermal adsorption model.Using divinyl benzene and 2-acrylamide-2-methyl propane sulfonic as raw materials,also by free radical polymerization,to form crosslinked polymer poly(AMPS-co-DVB).At the same time,adjusted the synthetic process of 2-acrylamide-2-methyl propane sulfonic acid and divinyl benzene,the proportion of the preparation of a series of poly(AMPS-co-DVB)adsorbents.In this article,through SEM?XRD?FTIR?TGA and BET on poly(AMPS-co-DVB)structure analysis,the results showed that poly(APMS-co-DVB)is a rough surface,amorphous,good thermal stability of porous material.Adsorption experiments showed that poly(AMPS-co-DVB)have superior adsorption on rhodamine B.Experimental study on the initial solution pH,contact time,dose and adsorption temperature on the adsorption capacity.By means of adsorption kinetics,adsorption isotherm and adsorption thermodynamic calculation,discussed the adsorption mechanism of poly(AMPS-co-DVB)to rhodamine B dye wastewater.By calculation,poly(AMPS-co-DVB)of rhodamine B followed second-order kinetics equation and Langmuir adsorption isothermal adsorption model,its adsorption process of rhodamine B is a spontaneous,endothermal and process of entropy increase.With acrylic acid and divinyl benzene as raw material,poly(AA-co-DVB)crosslinked polymer was synthesized by free radical polymerization.At the same time,adjusted the different ratio of acrylic acid and divinyl benzene,a series of poly(AA-co-DVB)were obtained.The properties of poly(AA-co-DVB)were characterized by SEM?FTIE?and TGA,test showed that poly(AA-co-DVB)is a rough surface,irregular suface morphology and good thermal stability.Poly(AA-co-DVB)was studied in aqueous solution of methylene blue adsorption effect,under the experimental conditions of the optimal pH and contact time,through the adsorption kinetics and adsorption isotherm calculation shows that poly(AA-co-DVB)of methylene blue adsorption conforms to the second-order dynamic equation and the Langmuir adsorption isotherm model.