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›› 2008, Vol. 8 ›› Issue (3): 472-477.

• 反应与分离 • Previous Articles     Next Articles

Separation of Methyl Isobutyl Ketone from Simulated Wastewater with Solvent Sublation

XIAO Bo CHANG Zhi-dong MA Yin-chen LIU Hui-zhou   

  1. Laboratory of Separation Science and Engineering, Chinese Academy of Sciences State Key Laboratory of Biochemical Engineering, Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences State Key Laboratory of Biochemical Engineering, Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2008-01-07 Revised:2008-02-19 Online:2008-06-20 Published:2008-06-20
  • Contact: LIU Hui-zhou

溶剂气浮法分离甲基异丁基酮模拟废水

肖波 常志东 马印臣 刘会洲   

  1. 中国科学院过程工程研究所分离科学与工程实验室 中国科学院过程工程研究所分离工程与工程青年实验室 中国科学院过程工程研究所分离工程与工程青年实验室 中国科学院过程工程研究所分离工程与工程青年实验室
  • 通讯作者: 刘会洲

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Abstract: Solvent sublation was applied to separate methyl isobutyl ketone (MIBK) from simulated wastewater containing MIBK at the concentration of 0.20%(j), which is of limited hydrophobic property and volatility. The effects of bubbling time, N2 flow rate, Vorg/Vaq ratio, concentration and type of co-solutes and surfactants on MIBK removal rate of solvent sublation were investigated, and the optimal results were obtained. The results show that the MIBK removal rate can be 25%~30% when the N2 flow rate is 40 mL/min, the Vorg/Vaq ratio 1:30, the concentration of NaCl 0.50%(w) and the concentration of ethanol 1.0%(j), while the positive effect of surfactants on the removal rate of solvent sublation is very limited, which varies from -10% to 5%.

Key words: solvent sublation, separation, methyl isobutyl ketone, simulated wastewater

摘要： 采用溶剂气浮法对含弱疏水性、有一定挥发性甲基异丁基酮(MIBK)的模拟废水(0.20%, j)进行了分离研究. 考察了气浮时间、氮气(N2)体积流速、油水相体积比、共溶质及表面活性剂等对MIBK溶剂气浮分离效率的影响，获得了各参数的优化结果. 结果表明，当N2流速为40 mL/min、油水相体积比为1:30、氯化钠浓度为0.50%(w)、乙醇浓度为1.0%(j)时，溶剂气浮法对模拟废水中MIBK的分离效率可以达到25%~30%左右，而表面活性剂对提高溶剂气浮分离效率作用非常有限，仅在-10%~5%范围内.

关键词: 溶剂气浮, 分离, 甲基异丁基酮, 模拟废水

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