JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2018, Vol. 48 ›› Issue (4): 116-121.doi: 10.6040/j.issn.1672-3961.0.2018.092

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Effect of nitrogen species on nitrogen removal performance of Spirulina platensis

LIU Ting, JIANG Li, ZHOU Weizhi*   

  1. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China
  • Received:2018-03-06 Online:2018-08-20 Published:2018-03-06

Abstract: The effects of different nitrogen species(ammonium, nitrite, nitrate, urea)in synthtic secondary effluent on Spirulina platensis growth and nitrogen removal performance was explored. The results showed that Spirulina platensis could grow and effectively remove nitrogen in secondary effluent. After 5 d treatment, concentration of total nitrogen(TN)were decreased to 3.5, 6.8, 4.6, and 4.0 mg/L, respectively, when the nitrogen species were ammonium(29.3 mg/L), nitrite(28.3 mg/L), nitrate(28.6 mg/L)and urea(29.1 mg/L). More than 75% of TN was assimilated in microalgae biomass, and only 4%~10% of TN was removed as gaseous nitrogen. This study provided a theoretical basis for further treatment of nitrogen in secondary effluent, and meanwhile, offered a new solution for microalgae cultivation.

Key words: Spirulina platensis, nitrogen removal, secondary effluent, nitrogen species, nitrogen assimilation

CLC Number: 

  • X52
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