Algae mass cultures

In algae mass culture, selection of appropriate depth and cell density is of outmost importance for achieving high productivity. The results shown in Fig. 2 illustrate the effect of these factors on the biomass yield of Anabaena ATCC 33047. Increasing cell density over 2 mg (chi) l-1or depth over 10 cm resulted in decreased productivity. These negative effects might well be in both cases consequence of mutual shading of the cells. 

The work aims to minimize the Chi anteima size of green algae and, thus, to maximize solar conversion efficiencies and the yield of biomass/ hydrogen production in mass culture. 

Between 1980 and 1987, the ASP funded the development of two larger-scale microalgae mass culture systems—one at the University of California and one at the University of Hawaii. Both systems utilized open raceway designs and performed their studies in ponds lOOm or less. The effects of fluid flow patterns, light intensity, dissolved O2 levels, pH, and algae harvesting methods were studied in both systems and locations. 

Kokke, W.C.M.C., S. Epstein, S.A. Look, G.H. Rau, W. Fenical, and C. Djerassi On the Origin of Terpenes in Symbiotic Associations between Marine Invertebrates and Algae (Zooxanthellae). Culture Studies and an Application of C/ C Isotope Ratio Mass Spectrometry. J. Biol. Chem. 259, 8168 (1984). 

Chapter 5.4. Metabolites from Lichen Mycobionts. The volatile compounds (ca. 130) produced by a Nostoc species from a Collema lichen were separated and identified by GC-MS most abundant were cyclohexane and cyclopentane derivatives (Dembitsky VM, Shkrob I, Dor I (1999) Separation and Identification of Hydrocarbons and other Volatile Compounds from Cultured Blue-Green Alga Nostoc spec, by Gas Chromatography - Mass Spectrometry Using serially coupled Capillary Columns with consecutive Nonpolar and Semipolar Stationary Phases. J Chromatogr A 682 221). 

INDUSTRIAL MASS ALGAE CULTURES IN LUKE-WARM WATER. 

TABLE I. Yields obtained in mass algae cultures in various climatic conditions (dry tons/ha.year). 

---