Turkish Journal of Fisheries and Aquatic Sciences
2006, Vol 6, Num, 2 (Pages: 123-127)
Utilization of Different Nitrogen Sources by Cultures of Scenedesmus acuminatus
Yalçın Tepe 1 ,Mehmet Naz 1 ,Mustafa Türkmen 1
1 Mustafa Kemal University, Faculty of Aquaculture and Fisheries, 31034, Antakya, Turkey
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Nitrogen was provided by different organic sources to promote S. acuminatus growth in the laboratory conditions and
comparison was made with the culture unit where nitrogen was provided by inorganic source. Protease peptone and several
aquatic plant species such as parrot feather (Myriophyllum), water lily (Nymphaea) and common cattail (Typha) were used as
organic nitrogen sources. The average nitrogen concentration in the muds (0.36%) was lower than the nitrogen contents of
the aquatic plants (1.21%, 1.53%, and 1.96% for Typha, Myriophyllum, and Nymphaea, respectively). Consequently, the mud
produced the least growth of S. acuminatus with the average algal growth of 109 ± 1.52 x 104 individuals per ml. The
mineralization rates of nitrogen from organic sources were adequate to support good S. acuminatus growth in cultures. The
suitability of decaying plants as sources of nitrogen was generally greater in plants with higher nitrogen content. Nymphaea
produced the best algal growth, while Typha and Myriophyllum supported little algal growth. Muds were poor nitrogen
source for S. acuminatus and did not support the good algal growth.
Keywords :
Nitrogen removal, Nitrogen sources, Scenedesmus acuminatus, Bacterial Decomposition, Wastewater