System for purifying a polluted air by using algae

Details System for purifying a polluted air by using algae System for purifying a polluted air by using algae

1998-07-22

2000-07-04

Beisner, William H.

Chemistry: molecular biology and microbiology

Process of utilizing an enzyme or micro-organism to destroy...

Treating gas, emulsion, or foam

4352571, 4352921, 47 14, B01D 5384

Patent

active

060837403

ABSTRACT:
A system for purifying a polluted air by using algae such as Spirulina is capable of reducing carbon dioxide (CO.sub.2), nitrogen oxide (NO.sub.x) and/or sulfur oxide (SO.sub.x) in the polluted air and generating oxygen. That is, this system comprises a culture tank filled with a culture fluid including the algae, an air supply unit for forcing the polluted air into the culture fluid to dissolve carbon dioxide and nitrogen oxide and/or sulfur oxide in the culture fluid, and a lighting unit for radiating a light to the culture fluid. By radiating the light to the culture fluid in the presence of carbon dioxide, photosynthesis of the algae is promoted to convert carbon dioxide into oxygen. In addition, the algae use the nitrogen oxide and/or sulfur oxide as a nutrient during the photosynthesis. As a result, the present system can efficiently purify the polluted air to generate a purified air, which is rich in oxygen.

REFERENCES:
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patent: 3955318 (1976-05-01), Hulls
patent: 3959923 (1976-06-01), Selke
patent: 4446236 (1984-05-01), Clyde
patent: 5614378 (1997-03-01), Yang et al.
patent: 5741702 (1998-04-01), Lorenz
Abstract of EP-749773 (Aug. 1996).
Patent Abstracts of Japan, vol. 96, No. 12, Dec. 26, 1996 & JP 08-206434 (Japan Ecological Kaunseru, Aug. 13, 1996.

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