发酵法生产1,3-丙二醇时产生的有机酸盐会对1,3-丙二醇产品的后续提取造成很大困难,尝试采用电渗析方法解决这一问题,并考察了操作电压、淡室流速、浓室初始浓度等操作条件对脱盐效果的影响.实验研究表明,电渗析技术可以有效脱除1,3-丙二醇发酵液中存在的有机酸盐,较好地解决1,3-丙二醇后提取中存在的问题,同时由扩散引起的1,3-丙二醇产品损失率不高于6.0%.经絮凝处理后采用该方法连续脱盐100h发现,发酵液中残存的菌体会对离子膜造成一定污染.
参考文献
| [1] | Kirl O.Encyclopedia of Chemical Technology[M].New York:wiley,1992:V12. |
| [2] | 李学梅;刘茉娥.发酵液中乳酸的电渗析法分离[J].高校化学工程学报,1998(03):231-235. |
| [3] | Boniardi N;Rota R;Nano G.Lactic acid production by electrodialysis.Part Ⅰ.Experimental tests[J].Journal of Applied Electrochemistry,1997:125-133. |
| [4] | Boniardi N.Lactic acid production by electrodialysis.Part Ⅱ.Modeling[J].Journal of Applied Electrochemistry,1997:135-145. |
| [5] | Madzingaidzo L;Danner H;Braun R .Process development and optimisation of lactic acid purification using electrodialysis[J].Journal of Biotechnology,2002(3):223-239. |
| [6] | Lee EG.;Chang YK.;Yoo IK.;Chang HN.;Moon SH. .Lactic acid recovery using two-stage electrodialysis and its modelling[J].Journal of Membrane Science,1998(1):53-66. |
| [7] | Chukwu U N;Cheryan M.Electrodialysis of acetate fermentation broths[J].Applied Biochemistry and Biotechnology,1999:485-499. |
| [8] | UCHENNA CHUKWU;MUNIR CHERYAN .Concentration of Vinegar by Electrodialysis[J].Journal of Food Science,1996(6):1223-1226. |
| [9] | Cheryan M;Parekh S R.Separation of glycerol and organic acids in model ethanol stillage by electrodialysis and precipitation[J].Process Biochemistry,1995:17-23. |
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