Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XVIII
Written by Katya VELICHKOVA, Ivaylo SIRAKOV, Stefka STOYANOVA
Algae are sustainable sources of biomass for fuel, food, feed and essential for their growth are light, CO2, andinorganic nutrients like nitrogen and phosphorous. The aim of our study was to explore the effect of different carbonsources on biomass accumulation in microalgae Chlorella vulgaris and its ability to remove N and P compoundsduring its cultivation in aquaculture wastewater. Microalgae cultivation was initiated in bioreactor from 500ml Erlenmeyer flask containing 250ml wastewater from semi closed recirculation aquaculture system. The cultures weremaintained at room temperature (25-27ºC) on a fluorescent light with a light:dark photoperiod of 12 h: 12 h. Themicroalgae were cultivated in wastewater with two different carbon sources: carbon dioxide (2%, v/v), and sodiumbicarbonate (NaHCO3) (1.125g.l-1). The growth of strain was checked for 96 hours period. In our study C. vulgarisshowed better growth in wastewater from aquaculture with bicarbonate utilization as carbon source during the experiment.
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aquaculture
