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Utilization of Spirulina platensis for wastewater treatment in fermented rice noodle factory

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Author(s): Sumontip Bunnag | Witaya Pimda | Sirinapa Pongpera

Journal: Extreme Life, Biospeology & Astrobiology
ISSN 2066-7671

Volume: 2;
Issue: 2;
Start page: 39;
Date: 2010;
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Keywords: Fermented rice noodle factory | wastewater treatment | nitrate-nitrogen | total phosphorus

ABSTRACT
Spirulina platensis is a single-cell blue-green alga which belongs to the family Oscillatoriaceae.S. platensis can grow in polluted water and it has been widely used to remove excess nitrate-nitrogenand total phosphorus content in wastewater from noodle factories. This study was aimed to investigatethe effect of wastewater on growth of S. platensis and to examine its potential to reduce nitrate-nitrogenand total phosphorus contents in wastewater from fermented rice noodle factory. Twenty five percentwastewatermixed Zarrouk’s medium gave rise to the highest growth rate of S. platensis. Optical density(OD) of S. platensis culture increased from 0.07±0.04 to 0.24±0.12. Also, the results exhibited the leastvalue of nitrate-nitrogen and total phosphorus contents when performed in 25 % and 100 %wastewater-mixed Zarrouk’s media, respectively.
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