MEASURING KLA WITH RANDOMLY PULSED DYNAMIC METHOD

被引：16

作者：

GAUTHIER, L ^{[1
]}

THIBAULT, J ^{[1
]}

LEDUY, A ^{[1
]}

机构：

[1] LAVAL UNIV,DEPT CHEM ENGN,ST FOY G1K 7P4,QUEBEC,CANADA

来源：

BIOTECHNOLOGY AND BIOENGINEERING | 1991年 / 37卷 / 09期

关键词：

OXYGEN TRANSFER COEFFICIENT; KLA; PULSED DYNAMIC METHOD; MECHANICALLY AGITATED VESSELS;

D O I：

10.1002/bit.260370914

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

This reports on the determination of the overall oxygen transfer coefficient in a mechanically agitated vessel using a randomly pulsed dynamic method. This method consists in exciting the system by randomly switching the inlet gas stream with air or nitrogen with an identical volumetric flow rate. A pseudo-random binary sequence was used. This procedure is routinely used in process control for the identification of system's transfer function. The pulsed dynamic method gives good reliability (as compared with the traditional gassing-out method) and reproducibility in water. However, further improvement is needed before it can be used to monitor on-line the k(L)a during a fermentation.

引用

页码：889 / 893

页数：5

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