XANTHAN PRODUCTION IN AN EXTERNAL CIRCULATION LOOP AIRLIFT FERMENTER

被引：29

作者：

KESSLER, WR

POPOVIC, MK

ROBINSON, CW

机构：

[1] TECH FACHHSCH BERLIN,FB 3,BIOTECHNIKUM,W-1000 BERLIN 65,GERMANY

[2] UNIV WATERLOO,DEPT CHEM ENGN,WATERLOO N2L 3G1,ONTARIO,CANADA

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1993年 / 71卷 / 01期

关键词：

XANTHAN GUM FERMENTATION; AIRLIFT BIOREACTOR; MASS TRANSFER; MIXING;

D O I：

10.1002/cjce.5450710114

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A preliminary study of xanthan production by Xanthomonas campestris was performed in an external-circulation-loop airlift (ECL-AL) fermenter. An average of 25 g/L xanthan of good viscosity characteristics was obtained in a total fermentation time of 49 hours. Oxygen limitation was observed after 36 hours of fermentation time. It is conclusively demonstrated that the ECL-AL fermenter can be used to economically produce xanthan. The key operating and design features are the liquid height, downcomer-to-riser cross-sectional area ratio (A(D)/A(R)) and the orfice diameter of the air sparger.

引用

页码：101 / 106

页数：6

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