Application Of Organic Porous Polymer In Dye And Antibiotic Wastewater

With the continuous progress of society,industry and agriculture in China have developed rapidly.Industrial and agricultural wastewater is increasing day by day,but it is lack of effective treatment methods,which often leads to serious environmental problems.These industrial and agricultural wastewater pollutants are difficult to be degraded naturally and do great harm to the environment^[1],so they cannot be discharged directly.Among the many wastewater treatment technologies containing dyes and antibiotics,the most commonly used methods are chemical oxidation,biodegradation and adsorption^[2-4].Adsorption method is widely used in industrial wastewater treatment due to its advantages such as no secondary pollution and simple operation,low cost of adsorbent and high adsorption efficiency^[5].In the synthesis process of organic porous materials,functional units can be inserted to regulate the properties of the materials,and the topological structure of polymerized monomers can be changed.They often have large specific surface area,high porosity,good chemical stability and other advantages,so they have high practical value.Therefore,the practical value is higher.Therefore,it is meaningful to explore the application potential of organic porous materials in wastewater treatment.The first chapter firstly summarizes porous materials,including the classification,synthesis methods and applications of porous materials Secondly,it summarizes the current situation of organic pollutant wastewater treatment,and puts forward the research significance and research of this topic.In the second chapter,KAPs-1?KAPs-5 braided microporous polymers were prepared by using five common aromatic substances as monomers,1,2-dimethoxymethaneas cross-linking agent and Fe Cl₃as catalyst under the condition of 1,2-dichloroethane as solvent.The synthesis method has mild reaction conditions,simple operation and convenient post-processing.The structure of the materials was characterized by P-XRD,SEM,BET,FT-IR and so on.P-XRD results show that all the five materials show typical amorphous characteristics.SEM results show that KAPs-1 and KAPs-5materials are irregular agglomerated structures,and KAPs-2?KAPs-4materials are composed of many irregular spheres.BET results show that among the five materials,KAPs-1 has a higher specific surface area of1067.72 m²/g,KAPs-2 specific surface area is 28.73 m²/g,KAPs-3 specific surface area is 25.56 m²/g,KAPs-4 specific surface area.The surface area is28.42 m²/g,and the specific surface area of KAPs-5 is 226.84 m²/g.In the third chapter,the adsorption properties of five materials for rhodamine B,methyl orange,levofloxacin and enrofloxacin were studied and discussed respectively.The results show that KAPs-1 polymer has a good adsorption effect on four organic pollutants,80 min can achieve more than 95%removal rate,KAPs-2 and KAPs-3 polymer have good adsorption effect for antibiotic levofloxacin and enrofloxacin,and 60 min can reach more than 95%clearance rate.KAPs-4 and KAPs-5 polymer adsorb dye rhodamine B and methyl orange pollutants slowly.It takes 10 hours to achieve 90%removal efficiency.