Process for the production of ethanol from microalgae

Details Process for the production of ethanol from microalgae Process for the production of ethanol from microalgae

1994-09-27

1996-11-26

Sayala, Chhaya D.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

435162, 435163, 435165, 435166, 435 42, 435946, C12P 714, C12P 708, C12P 712, C12N 112

Patent

active

055784720

ABSTRACT:
The present invention provides a process and system for the production of ethanol wherein a microalga capable of accumulating starch in the cells thereof is cultured, the culture solution containing the grown algal cells is concentrated, and ethanol is formed by maintaining the resulting slurry in a dark and anaerobic atmosphere while keeping its pH in the range of 6.0 to 9.0. This process and system can further include additional steps and units for subjecting the residual slurry, from which ethanol has been separated, to methane fermentation, burning it to generate carbon dioxide, and using the carbon dioxide in the microalga culturing step.

REFERENCES:
patent: 4288550 (1981-09-01), Ishida et al.
patent: 4358537 (1982-11-01), Chynoneth
patent: 5270175 (1993-12-01), Moll
Miura et al. Appl Biochem Biotechnol(39-40) 1993. 753-61.
Ohta et al. Plant Physiol. 83(4). 1987. pp. 1022-1026.

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