Volume 8, Issue 2 (Autumn 2018)
J. Aqua. Eco 2018, 8(2): 134-146 |
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Pirbeigi A, Hosseini S A, Ghorbani R, Rezaei H, Ordog V. Nutrient removal from municipal wastewater by the microalga Chlorella vulgaris grown in a continuous system. J. Aqua. Eco 2018; 8 (2) :134-146
URL: http://jae.hormozgan.ac.ir/article-1-502-en.html
URL: http://jae.hormozgan.ac.ir/article-1-502-en.html
Abstract: (4270 Views)
Nutrient inputs into the environments can cause eutrophication of aquatic ecosystems. Therefore, current experiment was carried out to investigate the effect of the initial nitrogen and phosphorus concentrations on nutrient removal performance of microalgae Chlorella vulgaris, at Gorgan University of Agricultural Sciences and Natural Resources, in fall 2015. In this regard, four experimental treatments were prepared (0%, 25%, 50% and 75%) by adding distilled water to sewage. A certain amount of chlorella cells was added to each treatment with the mentioned amount of sewage and the changes in the amount of phosphate, nitrate, ammonium, pH, COD, BOD, and the cells number were monitored during a 28-day experimental period (every 2 days). During the experiment, a 16/8 h light/dark photoperiod and a constant temperature of 24˚C were applied. The results indicated that the treatments with dilution rate of 50% and 75% showed the the best performance in phosphate removal (94.4%) and nitrate removal (99.84%), respectively. At the end of the experiment, COD, BOD and ammonium decreased but chlorophyll a, pH value and cells number increased. It can be concluded that chlorella has an efficient role in nutrient removal from wastewater.
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This work is licensed under a Creative Commons — Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)