采用干湿相转化法纺制了聚砜(PSF)中空纤维超滤底膜,并采用溶液浸渍法制备PDMS/PSF中空纤维复合膜.研究了PDMS膜的溶胀性能和PDMS/PSF膜渗透汽化性能,考察了PDMS/PSF膜的稳定性以及料液温度、料液丙酮浓度和渗透物侧压力等因素对膜渗透汽化性能的影响.结果表明,PDMS膜对丙酮有很强的吸附能力而对水的吸附能力则相对较弱,渗透液中丙酮浓度大于膜溶胀液中丙酮浓度,远远大于浸泡液中丙酮浓度,连续操作72 h膜的渗透汽化性能保持稳定,渗透通量随料液温度以及料液浓度的升高而增加,分离系数随料液浓度的增加而降低,基本不受温度的影响.当丙酮质量分数5％、料液温度为60℃时,渗透通量为632 g/(m2·h),分离系数为35.8,丙酮和水的表观活化能分别为45.7和49 kJ/mol.
参考文献
| [1] | 李雅丽.国内外丙酮生产现状与市场分析[J].精细与专用化学品,2005(17):27-29. |
| [2] | Maddox I S .The acetone-butanol-ethanol fermentation:recent progress in technology[J].Biotechnology & Genetic Engineering Reviews,1989,7:189-220. |
| [3] | Trong Q;Nguyen;Ken Nobe .Extraction of organic contaminants in aqueous solutions by pervaporation[J].Journal of Membrane Science,1987,30:11-22. |
| [4] | B (o)ddeker K W .Recovery of volatile bioproducts by pervaporation[J].Membr Proc Sep Purif,1994,272:195-206. |
| [5] | N.Qureshi;M.M.Meagher;Jicai Huang .Acetone butanol ethanol (ABE) recovery by pervaporation using silicalite-silicone composite membrane from fed-batch reactor of Clostridium acetobutylicum[J].Journal of Membrane Science,2001(1/2):93-102. |
| [6] | Lei L;Xiao ZY;Tan SJ;Liang P;Zhang ZB .Composite PDMS membrane with high flux for the separation of organics from water by pervaporation[J].Journal of Membrane Science,2004(1/2):177-187. |
| [7] | 罗建泉,伊守亮,苏仪,陈向荣,苏志国,万印华.渗透汽化法从丙酮-丁醇-乙醇中分离浓缩丁醇[J].化学工程,2010(02):43-46. |
| [8] | N.Qureshi;H.P. Blaschek .Butanol recovery from model solution/fermentation broth by pervaporation: evaluation of membrane performance[J].Biomass & Bioenergy,1999(2):175-184. |
| [9] | Nasibuddin Qureshi;Blaschek HP .Production of acetone butanol ethanol (ABE) by a hyper-producing mutant strain of Clostridium beijerinckii BA101 and recovery by pervaporation[J].Biotechnology Progress,1999(4):594-602. |
| [10] | Qureshi N;Blaschek H P .Butanol production using Clostridium beijerinckii BA101 hyperbutanol-producing matant strain and recovery by pervaporation[J].Applied Biochemistry and Biotechnology,2000,84:5-15. |
| [11] | Fangfang Liu;Li Liu;Xianshe Feng .Separation of acetone-butanol-ethanol (ABE) from dilute aqueous solutions by pervaporation[J].Separation and Purification Technology,2005(3):273-282. |
| [12] | Thongsukmak A;Sirkar KK .Pervaporation membranes highly selective for solvents present in fermentation broths[J].Journal of Membrane Science,2007(1/2):45-58. |
| [13] | 董永全,张林,陈欢林.中空纤维渗透汽化膜分离研究现状与展望[J].江西化工,2007(04):7-11. |
| [14] | 黄卫星,钟月华,肖泽仪,伍勇,叶立,徐怀东.硅橡胶膜生物反应器及其用于乙醇连续发酵的研究[J].四川大学学报(工程科学版),2003(01):1-7. |
| [15] | Shujuan Tan;Lei Li;Zeyi Xiao;Youting Wu;Zhibing Zhang .Pervaporation of alcoholic beverages—the coupling effects between ethanol and aroma compounds[J].Journal of Membrane Science,2005(1/2):129-136. |
| [16] | Huang R Y M;Rhim J W .Separation characteristics of pervaporation membrane separation processes using modified poly (vinyl alcohol) membranes[J].Polymer International,1993,1(30):123-128. |
| [17] | Amnuaypanich, S;Ratpolsan, P .Pervaporation Membranes from Natural Rubber Latex Grafted with Poly(2-hydroxyethyl methacrylate) (NR-g-PHEMA) for the Separation of Water-Acetone Mixtures[J].Journal of Applied Polymer Science,2009(5):3313-3321. |
| [18] | Ghosh U K;Pradhan N C;Adhikari B .Separation of furfural from aqueous solution by pervaporation using HTPB based hydrophobic polyurethaneurea membranes[J].Desalination,2007,208:156-158. |
| [19] | Kataoka T;Suru T;Nakao S .Permeation Equations Developed for Prediction of Membrane Performance in Pervaporation,Vapor Permeation and Reverse Osmosis Based on the Solution-Diffusion Model[J].Journal of Chemical Engineering of Japan,1991,24:326-333. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%