Читать книгу Encyclopedia of Renewable Energy - James Speight G., James G. Speight - Страница 189

The photosynthetic production of hydrogen employs microorganisms such as cyanobacteria, which have been genetically modified to produce pure hydrogen rather than the metabolically relevant substances. The conversion efficiency from sunlight to hydrogen is small, usually under 0.1%, indicating the need for large collection areas.

Hydrogen build-up hinders further production, and there has to be a continuous removal of the hydrogen produced, by pipelines to e.g., a shore location, where gas treatment and purification can take place. Furthermore, if the bacteria are modified to produce maximum hydrogen, their own growth and reproduction are quenched. There presumably has to be a compromise made between the requirements of the organism and the amount of hydrogen produced for export, so that replacement of organisms (produced at some central biofactory) does not have to be made at frequent intervals.

See also: Hydrogen.