The process utility of thermotolerant methylotrophic bacteria: II. An evaluation of transient responses.
In Part II, the process utility of a thermotolerant methylotrophic bacterium is evaluated with respect to its dynamic response when various substrate or nutrient pulses are imposed on it while growing under steady-state conditions in a chemostat. The pulses investigated were methanol pulses on methanol-, methanol/formaldehyde-, and dual methanol/ammonia-limited cultures and an ammonia pulse on a severely nitrogen (ammonia)-limited culture. The results obtained, although exemplifying the complex biochemistry of such bacteria, clearly demonstrate the bacteriums flexibility and versatility in handling process transients. Its lack of fastidiousness in unsteady state continuous culture make it a most promising candidate for inclusion in process cultures for elevated temperature industrial wastewater treatment.
Al-Awadhi
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Biotechnology Department, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait.
Egli
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Hamer
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Mason
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