Photosynthetic production of microalgal biomass in a raceway system under greenhouse conditions in Sendai city

• Published in: Journal of bioscience and bioengineering Vol. 89; no. 2; pp. 157 - 163
• Main Authors: Hase, Ryouetsu, Oikawa, Hiroyoshi, Sasao, Chiyo, Morita, Masahiko, Watanabe, Yoshitomo
• Format: Journal Article
• Language: English
• Published: Amsterdarm Elsevier B.V 2000; Elsevier Science
• Subjects: Algae; Batch cell culture; Biological and medical sciences; BIOMASA; BIOMASS; BIOMASSE; Biotechnology; CARBON DIOXIDE; CHLORELLA; CO 2; DIOXIDO DE CARBONO; DIOXYDE DE CARBONE; Environment and pollution; FOTOSINTESIS; Fundamental and applied biological sciences. Psychology; Global warming; Greenhouse effect; GREENHOUSES; Industrial applications and implications. Economical aspects; INVERNADEROS; Methods. Procedures. Technologies; microalgae; Microbial engineering. Fermentation and microbial culture technology; Miscellaneous; PHOTOSYNTHESE; PHOTOSYNTHESIS; Plant cell culture; raceway; SERRE; Japan; microalgae; CO 2; raceway; global warming; photosynthesis; Greenhouse effect; Algae; Carbon dioxide; Stratospheric warming; Biomass; Chlorophyta; Biotransformation; Production; Microorganism culture; Photosynthesis; Greenhouse study; Thallophyta; Environmental protection
• ISSN: 1389-1723; 1347-4421
• DOI: 10.1016/S1389-1723(00)88730-7

The photosynthetic productivities of the marine microalgae
Chlorophyta sp. and freshwater microalgae
Chlorella sp. were investigated in a raceway system under greenhouse conditions in Sendai city. The system was constructed with a surface area of 0.986 m
2 and equipped with paddle wheels (8 fins). The semicontinuous batch culture experiment was carried out for 4 months from June to October 1998 in Sendai city. The productivity of
Chlorophyta sp. was ranged from 4 to 13 g•m
−2•d
−1 and the average was 8.2 g•m
−2•d
−1, which corresponded to the photosynthetic efficiency of 4.15% (PAR). The productivity of
Chlorella sp. was ranged from 7 to 21 g•m
−2•d
−1 and the average was 13.2 g•m
−2•d
−1, which corresponded to the photosynthetic efficiency of 6.56% (PAR). These results indicate that stable microalgal cultivation with comparatively high photosynthetic efficiency could be obtained in a raceway system under greenhouse conditions in Sendai city located in the northern part of Japan.