Method for biomethanation

Details Method for biomethanation Method for biomethanation

1986-05-16

1988-11-01

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210630, 210683, 210670, 435167, 48197A, C02F 328, C02F 1104, C12P 502

Patent

active

047818360

ABSTRACT:
An improved process for the biomethanation of an organic substrate includes treating the substrate in a first reactor to form organic acid anions, passing an aqueous preparation containing dissolved organic anions through an anion exchanger so that the organic acid anions are adsorbed and separated from the remainder of the aqueous preparation, desorbing the organic acid anions and passing the desorbed acids to a second reactor containing methanogenic bacteria which convert the acids to methane. In a preferred embodiment, a bicarbonate solution is produced in the second reactor and it is used to desorb the organic acid anions and regenerate the anion exchanger into the bicarbonate form.

REFERENCES:
patent: 4134830 (1979-01-01), Skogman et al.
patent: 4659471 (1987-04-01), Molin et al.
patent: 4696746 (1987-09-01), Ghosh et al.
patent: 4722741 (1988-02-01), Hayes et al.
patent: 4735723 (1988-04-01), Mulder

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