Abstract
Experiments concerning the optimization of growth conditions in the laboratory and mass production of the marine microalga Isochrysis galbana in open reactors are described. In the laboratory, a maximum specific growth rate (μmax) of 0.073 h-1 was obtained, which is equivalent to a doubling time of 9.5 h. In a small reactor (2.5-m2 pond) the production rate of biomass was 29.5±2 g m-2 day-1 and that of lipids was 6.5±0.5 g m-2 day-1. In a larger reactor (100-m2 pond) in which algae were grown first by batch and then by semi-continuous mode, the average output rates of biomass and of lipids were 23.5±1.5 g m-2 day-1 and 5.6±0.5 g m-2 day-1, respectively. A complete removal of the biomass was achieved in the 100-m2 pond by means of flocculation with FeCl3 (180 mg l-1) and dissolved air flotation without a prior recycling of part of the effluent. Monoalgal cultures were maintained in the different outdoor experiments throughout the entire 4-month production period.
Original language | English |
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Pages (from-to) | 247-253 |
Number of pages | 7 |
Journal | Aquaculture |
Volume | 72 |
Issue number | 3-4 |
DOIs | |
State | Published - 1 Jan 1988 |
ASJC Scopus subject areas
- Aquatic Science