AMMONIA CONTROL APPARATUS AND AMMONIA CONTROL METHOD

• Main Author: TAKESHITA, RYO
• Format: Patent
• Language: English; Polish
• Published: 31.03.2020
• Subjects: APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF; CULTURE MEDIA; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; PHYSICS; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPIRITS; TESTING; VINEGAR; WINE

An ammonia-controlling method for controlling ammonia concentration of a culture medium contained in a culture tank, wherein ammonia concentration in the culture tank is controlled by using an ammonia-controlling apparatus comprising at least an ammonia feeder that supplies ammonia to the culture tank, an ammonia sensor that responds to non-ionized ammonia in the culture medium contained in the culture tank, and a control part connected to the ammonia feeder and the ammonia sensor, and which method comprises the following steps performed by the control part: a non-ionized ammonia concentration calculation step of calculating non-ionized ammonia concentration in the culture tank by substituting the signal from the ammonia sensor into a calibration curve representing relation between non-ionized ammonia concentration in the culture tank and a signal from the ammonia sensor; and an ammonia supply direction step of directing the ammonia feeder to supply ammonia to the culture tank when the calculated non-ionized ammonia concentration is lower than a predetermined concentration.