发明名称 |
Crossflow microfiltration process for the separation of biotechnologically produced materials |
摘要 |
The invention relates to a process for the separation of biotechnologically produced valuable materials form a cell suspension by crossflow microfiltration to obtain an high specific permeate flux while retention stays near 0% for long periods. To enable crossflow microfiltration to be carried out on an industrial scale in biotechnology in the separation of biotechnologically produced extracellular valuable materials from a cell suspension, particularly in the separation of alkaline protease for recovering enzyme, under economically acceptacle conditions, alkaline protease of relatively high molecular weight, more especially enzyme >20,000 daltons, is separated from a fermenter solution using polysulfone tubes having micropore diameters of from 0.3 to 0.5 mu m at a rate of flow of the fermenter solution of from 3 to 6 m/s parallel to the membrane surface and with a pressure difference between the concentrate side and the permeate side of 2 bar, the ratio of the mean pore diameter of the membrane to the size of the microorganisms remaining in the concentrate being between 0.15 and 0.
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申请公布号 |
US4751003(A) |
申请公布日期 |
1988.06.14 |
申请号 |
US19860858408 |
申请日期 |
1986.05.01 |
申请人 |
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN |
发明人 |
RAEHSE, WILFRIED;CARDUCK, FRANZ-JOSEF;KUEHNE, NORBERT |
分类号 |
B01D37/00;C12M1/12;C12N1/02;C12N9/50;C12N9/52;C12P1/00;(IPC1-7):B01D13/00;C12N9/48 |
主分类号 |
B01D37/00 |
代理机构 |
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代理人 |
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主权项 |
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