Growth of Spirulina maxima on cow‐manure wastes

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Abstract
Experiments were carried out on culturing the blue‐green alga Spirulina maxima on raw cow‐manure wastes in an outdoor pond. Improved growth was obtained at pH above 9.2 and temperature above 32°C, with half the radiation intensity required for other green algal species. A yield of 3 g/liter, in terms of total suspended matter, was achieved. The main advantage of this method is that S. maxima removes nutrients and thus serves as an alternative protein source.