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Assessment of inorganic nitrogen and phosphorus compounds removal efficiency from different types of wastewater using microalgae cultures

Inna Nezbrytska
Inna Nezbrytska
, 
Sergii Shamanskyi
Sergii Shamanskyi
, 
Lesia Pavliukh
Lesia Pavliukh
 und 
Galina Kharchenko
Galina Kharchenko
   | 31. März 2022
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Article Category: Original research paper
Online veröffentlicht: 31. März 2022
Seitenbereich: 45 - 52
Eingereicht: 13. Aug. 2021
Akzeptiert: 11. Okt. 2021
DOI: https://doi.org/10.26881/oahs.2022.1.05
Schlüsselwörter
© 2022 Inna Nezbrytska et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Changes in dry weight of Chlamydomonas reinhardtii (A) and Oscillatoria neglecta (B) during their cultivation in different types of wastewater: 1 – 30 mg N-NH4+ l−1 + 7 mg P-PO43− l−1; 2 – 50 mg N-NH4+ l−1 + 14 mg P-PO43− l−1; 3 – 90 mg N-NH4+ l−1 + 26 mg P-PO43− l−1; 4 – 140 mg N-NH4+l−1 + 41 mg P-PO43− l−1.
Changes in dry weight of Chlamydomonas reinhardtii (A) and Oscillatoria neglecta (B) during their cultivation in different types of wastewater: 1 – 30 mg N-NH4+ l−1 + 7 mg P-PO43− l−1; 2 – 50 mg N-NH4+ l−1 + 14 mg P-PO43− l−1; 3 – 90 mg N-NH4+ l−1 + 26 mg P-PO43− l−1; 4 – 140 mg N-NH4+l−1 + 41 mg P-PO43− l−1.

Concentrations of N-NH4+ and P-PO43− in wastewater

Variant of the experimentInitial concentration, mg l−1
N-NH4+P-PO43−
130.00 ± 1.127.00 ± 0.18
250.00 ± 2.2514.00 ± 0.56
390.00 ± 2.5826.00 ± 0.47
4140.00 ± 2.6841.00 ± 0.67

Changes in the content of photosynthetic pigments in Chlamydomonas reinhardtii, M ± SD

Experiment variantChlorophyll a, mg g−1 DWCarotenoids, mg g−1 DW
0 days14 days0 days14 days
14.89 ± 0.258.66 ± 0.531.08 ± 0.042.17 ± 0.10
24.89 ± 0.259.01 ± 0.451.08 ± 0.042.22 ± 0.11
34.89 ± 0.2510.47 ± 0.581.08 ± 0.042.48 ± 0.11
44.89 ± 0.2514.89 ± 0.661.08 ± 0.043.50 ± 0.20

Final concentration of nutrients in wastewater (mg l−1) during the microalgae cultivation period, M ± SD

Experiment variantChlamydomonas reinhardtiiOscillatoria neglecta
NPNP
111.00 ± 0.255.70 ± 0.1312.00 ± 0.503.15 ± 0.11
220.03 ± 1.0013.00 ± 0.3619.50 ± 1.218.00 ± 0.44
340.00 ± 2.5024.00 ± 1.4862.00 ± 3.4519.30 ± 0.82
471.00 ± 2.2538.00 ± 1.66168.10 ± 5.4050.00 ± 2.55

Changes in the content of photosynthetic pigments in Oscillatoria neglecta, M ± SD

Experiment variantChlorophyll a, mg g−1 DWCarotenoids, mg g−1 DW
0 days14 days0 days14 days
14.00 ± 0.127.00 ± 0.330.62 ± 0.022.40 ± 0.09
24.00 ± 0.126.76 ± 0.240.62 ± 0.022.10 ± 0.10
34.00 ± 0.124.60 ± 0.160.62 ± 0.021.12 ± 0.04
44.00 ± 0.121.03 ± 0.040.62 ± 0.020.47 ± 0.01
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Sprache:
Englisch
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