【摘要】 为有效降解乳化油废水,采用共沉淀法制备Fe3O4纳米微粒,并用聚乙二醇和十二烷基硫酸钠对微粒改性,得到双亲性磁核,进而采用分散聚合法制备核壳结构磁性粒子。经过表征测试,材料的接触角θ=133.4°,比表面积达到1 032.43 m2/g,饱和吸油率高达27.100 7 g/g,缓释保油率最高为96.19%,对乳化油表现出较强吸附性能。磁性粒子比饱和磁化强度为3.95×103A/m,具有强磁响应性,有利于材料的回收和重复使用。通过12 h降解乳化油研究,该材料固定化微生物处理乳化油比直接投放微生物的降解率提高了13.86%。本研究成果为新型磁性材料固定化微生物快速吸附降解乳化油废水及其应用提供了参考。更多还原

【Abstract】 In order to effectively degrade emulsion wastewater, the Fe3 O4 nanoparticles are prepared by coprecipitation method,the particles are modified by polyethylene glycol and 12 alkyl sulfate,the amphiphilic magnetic nuclei are obtained, and then the core-shell magnetic particles are prepared by dispersing polymerization method. After the characterization test,the contact angle of the material is θ = 133. 4°,the specific surface area reaches 1032. 43 m2/g,the oil absorption rate is as high as 27. 1007 g/g,and the maximum oil-retention rate is 96. 19%,and the emulsion oil shows strong adsorption performance. The specific saturated magnetization of the magnetic particle is 3. 95 × 103 A/m and has the strong magnetic response,which is beneficial to the recovery and reuse of materials. The degradation rate of emulsified oil treated by immobilized microorganism increases by 13. 86% through the study of 12 hours of the degradation of emulsified oil. The results of this study provide a reference for the rapid adsorption and degradation of emulsified oil wastewater by immobilized microorganisms in new magnetic materials and its application.更多还原