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Vapor permeation of ethyl acetate,propyl acetate,and butyl acetate with hydrophobic inorganic membrane

机译：疏水性无机膜对乙酸乙酯，乙酸丙酯和乙酸丁酯的蒸气渗透

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摘要

This study is focused on the permeation characteristics of ester compounds from aqueous solutions through hydrophobic membrane;ethyl acetate (EA),propyl acetate (PA) and butyl acetate (BA).A surface-modified tube-type alumina membrane (Al_2O_30 was used for ester compounds recovery by vapor permeation.Experiments were performed to evaluate the effectsof the feed concentration (0.15-0.60 wt.%) and feed temperature (30-50degC) on the separation of EA,PA,and BA from dilute aqueous solutions.It was found that the permeation flux increasd with increasing feed ester concentration and operating temperature.The fluxesof EA,PA,and BA at 0.60 wt.% feed concentration and 40degC were 282,526,661 g/m~2h,which wee much higher than those of polymer membranes.The separation factors for the 0.15-0.60 wt/% feed solution of EA,PA,and BA at 40degC were in the range of 28.1-93.9,83.6-129.4,and 190.7-209.9,respectively.The membrane tested showed high flux and high selectivity.
机译：本研究着眼于酯类化合物从水溶液通过疏水膜，乙酸乙酯（EA），乙酸丙酯（PA）和乙酸丁酯（BA）的渗透特性。使用表面改性的管型氧化铝膜（Al_2O_30）进行了实验，以评估进料浓度（0.15-0.60 wt。％）和进料温度（30-50degC）对从稀水溶液中分离EA，PA和BA的影响。研究发现，随着进料酯浓度和操作温度的升高，渗透通量增加。进料浓度为0.60 wt％，温度为40℃时EA，PA和BA的通量为282,526,661 g / m〜2h，远高于聚合物膜的通量。 EA，PA和BA在40°C时0.15-0.60 wt /％进料溶液的分离系数分别在28.1-93.9、83.6-129.4和190.7-209.9范围内。选择性。

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