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A comparative study of the growth of Tetraselmis sp. in large scale fixed depth and decreasing depth raceway ponds
Probir Das1, Mahmoud Ibrahim Thaher1, Mohammed Abdul Quadir Mohd Abdul Hakim1
1Algal Technologies Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O. 2713, Doha, Qatar.
Abstract:
In this study, an alternative approach was proposed where excess seawater would be added only during inoculation (DD) rather than daily addition (FD). Growth and metabolite contents of Tetraselmis sp. weren't affected for daily increase of 2% NaCl salinity. Tetraselmis sp. was then cultured in DD and FD pond. In DD pond, initial culture depth was 23.5cm and its depth reduced as no water was added; for FD pond, everyday sterilized seawater was added to maintain 20cm depth. DD pond had higher biomass productivity compared to FD pond, until DD pond was deeper than FD pond; metabolite content and FAME profile of Tetraselmis sp. were also similar in both cultures. Therefore, considering the simplicity in operation, halo tolerant microalgae can be grown in DD pond method.
