CIESC Journal

• SEPARATION SCIENCE & ENGINEERING • 上一篇    下一篇

非泡沫气泡分离法回收青霉素生产废水中的乙酸丁酯

孙兴华a; 常志东c; 胡欣b; 申淑锋b; 刘会洲c   

  1. a Laboratory of Separation Scienceand Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080,China
    b LaboratoryofSeparationScienceandEngineering,StateKeyLaboratoryofBiochemicalEngineering,I
              InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100080,China//GraduateSchooloftheChineseAcademyofSciences
    c Laboratory of Separation Scie     enceandEngineering,StateKeyLaboratoryofBiochemicalEngineering,InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100080,China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2005-06-28 发布日期:2005-06-28
  • 通讯作者: 孙兴华

Nonfoaming Bubble Separation for Recovery of Butyl Acetate from Discharged Wastewater During Penicillin Production

SUN Xinghuaa; CHANG Zhidongc; HU Xinb; SHEN Shufengb; LIU Huizhouc   

  1. a Laboratory of Separation Scienceand Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080,China
    b LaboratoryofSeparationScienceandEngineering,StateKeyLaboratoryofBiochemicalEngineering,I
              InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100080,China//GraduateSchooloftheChineseAcademyofSciences
    c Laboratory of Separation Scie     enceandEngineering,StateKeyLaboratoryofBiochemicalEngineering,InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100080,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-06-28 Published:2005-06-28
  • Contact: SUN Xinghua

摘要:

Two nonfoaming bubble separation techniques, air stripping and solvent sublation, are presented and discussed in order to recover butyl acetate (BA) from discharged wastewater after solvent extraction of penicillin. Results show air stripping is not suitable for the recovery of BA from the wastewater. Axial concentration of BA had a noted maximum point along the column. In contrast, solvent sublation is very effective to recover BA from the wastewater. In solvent sublation experiments, axial concentration of BA along the column first increased and then decreased from the bottom to the top because of two primary mass transport processes. One is the transport by adsorption or attachment to ascending bubbles, and the other is by dispersion at water-solvent interface and by water film in organic solvent layer. In order to elucidate the high removal efficiency in solvent sublation, the microstructure of the wastewater was studied with optic microscope, which was showed to be an emulsion of BA in water at large concentration of BA. Solvent sublation can be successfully used in the removal of BA from its emulsion in the wastewater. The surface tension of simulated solution composed of lysozyme and BA was studied to understand mutual effect of biological materials and BA. Results show that lysozyme affects the adsorption of BA at air-water interface and they may form a complex between BA and lysozyme molecules.

关键词: 青霉素;反萃技术;废水处理;丁基合成橡胶;乳剂

Abstract: Two nonfoaming bubble separation techniques, air stripping and solvent sublation, are presented and discussed in order to recover butyl acetate (BA) from discharged wastewater after solvent extraction of penicillin. Results show air stripping is not suitable for the recovery of BA from the wastewater. Axial concentration of BA had a noted maximum point along the column. In contrast, solvent sublation is very effective to recover BA from the wastewater. In solvent sublation experiments, axial concentration of BA along the column first increased and then decreased from the bottom to the top because of two primary mass transport processes. One is the transport by adsorption or attachment to ascending bubbles, and the other is by dispersion at water-solvent interface and by water film in organic solvent layer. In order to elucidate the high removal efficiency in solvent sublation, the microstructure of the wastewater was studied with optic microscope, which was showed to be an emulsion of BA in water at large concentration of BA. Solvent sublation can be successfully used in the removal of BA from its emulsion in the wastewater. The surface tension of simulated solution composed of lysozyme and BA was studied to understand mutual effect of biological materials and BA. Results show that lysozyme affects the adsorption of BA at air-water interface and they may form a complex between BA and lysozyme molecules.

Key words: bubble separation, air stripping, solvent sublation, butyl acetate, wastewater, emulsion