Hawaii Institute of Marine Biology Contribution No. 819.
A study of the energetics and economics of microalgal mass culture with the marine chlorophyte Tetraselmis suecica: Implications for use of power plant stack gases†
Article first published online: 18 FEB 2004
Copyright © 1991 John Wiley & Sons, Inc.
Biotechnology and Bioengineering
Volume 37, Issue 10, pages 936–947, 25 April 1991
How to Cite
Laws, E.A. and Berning, J.L. (1991), A study of the energetics and economics of microalgal mass culture with the marine chlorophyte Tetraselmis suecica: Implications for use of power plant stack gases. Biotechnol. Bioeng., 37: 936–947. doi: 10.1002/bit.260371007
- Issue published online: 18 FEB 2004
- Article first published online: 18 FEB 2004
- Manuscript Accepted: 6 NOV 1990
- Manuscript Received: 27 JUN 1990
The marine phytoplankter Tetraselmis suecica was grown in shallow outdoor flumes for a period of approximately 6 months at the Natural Energy Laboratory of Hawaii. In full sunlight, gross production rates were 15–20 g C m−2 d−1. The corresponding photosynthetic efficiencies (PE's) were 9–10%. Respiration losses removed about half the gross production. The CO2 utilization efficiencies of 96 ± 11% were achieved by bubbling CO2 into the culture with the use of a counterflow sump system. Adding the CO2 in the form of carbonated water resulted in utilization efficiencies of 81 ± 11%. Archimedes screws proved superior to both paddle wheels and propellers as a means of circulating the water in the flumes. Insertion of foil arrays into the flumes to effect systematic mixing of the culture significantly enhanced production. The enhancement was greater when the foils were oriented at a small angle relative to the horizontal than when they were oriented at the same angle relative to the vertical. Light modulation effects are implicated as the probable cause of most of the enhancement. Substitution of electric power plant stack gases for pure CO2 resulted in no significant change in the production of T. suecica grown in chemostat culture.