PROCESS FOR PRODUCING BIOGAS

• Main Authors: MITANI, YUTAKA, NISHIO, NAOMICHI
• Format: Patent
• Language: English; French; Japanese
• Published: 25.08.2005
• Edition: 7
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; BEER; BIOCHEMISTRY; CHEMISTRY; DISPOSAL OF SOLID WASTE; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MICROBIOLOGY; MUTATION OR GENETIC ENGINEERING; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; RECLAMATION OF CONTAMINED SOIL SOIL; SPIRITS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; VINEGAR; WINE

A process for producing a biogas, comprising carrying out hydrogen fermentation of a subject solution containing organic matter with the use of a hydrogen fermentation microbe, in which on the basis of interrelationship between the concentration of given substrate contained in the subject solution and the rate of substrate consumption by the hydrogen fermentation microbe, the maximum allowable concentration of substrate consumable by the hydrogen fermentation microbe is determined in advance and in which in the actual hydrogen fermentation step, the concentration of substrate in the subject solution is maintained at one not higher than the maximum allowable concentration. In this biogas production process, hydrogen fermentation can be performed satisfactorily steadily without any treatment of raw material involving consumption of thermal energy such as heating or warming. : Procédé de fabrication de biogaz, comprenant l'opération de fermentation sous hydrogène d'une solution contenant une matière organique avec l'emploi d'un microbe de fermentation sous hydrogène, dans lequel sur la base de l'interrelation entre la concentration d'un substrat donné contenu dans la solution concernée et le taux de consommation du substrat par le microbe de la fermentation sous hydrogène, la concentration maximale admise de substrat consommable par le microbe de la fermentation sous hydrogène, est déterminée à l'avance et dans laquelle la phase de fermentation réelle sous hydrogène, la concentration de substrat dans la solution concernée est maintenue à un niveau pas plus élevé que la concentration maximale admise. Dans ce procédé de production de biogaz, la fermentation sous hydrogène peut être effectuée avec succès de façon stable sans aucun traitement de matière brute impliquant la consommation d'énergie thermique sous forme d'un chauffage.