- Volume 20 Issue 4
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Digestion of settleable solids from recirculating fish tank as nutrients source for the microalga Scenedesmus sp. cultivation
Rotthong, Maneechotiros;Chiemchaisri, Wilai;Tapaneeyaworawong, Paveena;Powtongsook, Sorawit
- Received : 2015.08.03
- Accepted : 2015.10.06
- Published : 2015.12.31
The high concentration of nitrogen and phosphorus in wastewater incorporated with the ability to use carbon dioxide as the carbon source make the microalgae become more attractive in wastewater treatment process. This study evaluates the optimal conditions for the digestion of settelable solids from the recirculating aquaculture system to produce the biomass of the green microalga Scenedesmus sp. After solids separation, aerobic digestion of settleable solids under disperse condition produced nitrate as the final product of consequently ammonification and nitrification processes. With the optimal digestion procedure, nitrate concentration during aerobic digestion in 2000 mL vessel increased from
Aerobic digestion;Ammonification;Nitrification;Recirculating aquaculture system;Scenedesmus sp.;Settleable solids
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