Ein neues Verfahren zur zweistufigen Kultivierung von Mikroorganismen. Teil I. Prinzip des Verfahrens

✍ Scribed by W. Teich

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 244 KB
• Volume: 8
• Category: Article
• ISSN: 0138-4988
• DOI: 10.1002/abio.370080516

✦ Synopsis

The importance of the two-step process technology in the field of biotechnological processes is demonstrated. Its application especially is pointed out to waste water treatment. The general advantages of such processes exist in its possibility to use different strains of microorganisms in nn effective way and to realize parameters of the technological process in a defined sequence. But with the application of two-step process techniques (add of biomass to the second step) an extension of retention time is connected with a decrease.of yield coefficient. This disadvantage may be eliminated by an inactivation of microorganisms after the first step. The inactivation of microorganisms can be realized by increase of temperature, of pH-value or by addition of toxic substances. The inactivated microorganisms act as inert particles in the second step not utilizing substrate and oxygen. The new process regime has a lot of advantages, eg. increase of biomass concentration, increase of utilization of complexe substrates and possibility of coupling different biotechnological processes.