Related Experiment Video
Updated: Jul 4, 2026

Operation of a Benchtop Bioreactor
Published on: September 12, 2013
Effect of pH on growth of mixed cultures in batch reactor
1Dipartimento di Ingegneria Chimica e Material Universitá di Cagliari, Cagliari, Italy.
Abstract:
This work has studied the effect of pH on specific growth rate mu, yield factor Y, and specific substrate consumption rate U for two mixed microbial populations (sludge A and B) in a batch reactor with a limiting substrate (phenol). The mathematical analysis of mu and U as a function of pH has been applied not only to the results of the present work but also to other published data. On the basis of the results obtained, the following remarks can be made: (a) The effect of pH on bacterial activity differed for the two sludges; (b) variations in pH of one unit more or less than optimum pH can give rise to appreciable variations in mu and U; and (c) with regard to the mixed populations used in this study, the mu or U and pH data for the range investigated can be suitably described by a parabolic relation.
More Related Videos
09:28Process Optimization using High Throughput Automated Micro-Bioreactors in Chinese Hamster Ovary Cell Cultivation
Published on: May 18, 2020
07:38Saccharomyces cerevisiae Exponential Growth Kinetics in Batch Culture to Analyze Respiratory and Fermentative Metabolism
Published on: September 30, 2018
Related Concept Videos
Batch vs Continuous Culture
Fed-Batch Culture
Designing Growth Media for Bioreactors
Bioreactor Controls-I
Bioreactor Controls-II
Factors Influencing Microbial Growth: pH