Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris
The synergistic effects and optimization of nitrogen (N) and phosphorus (P) concentrations on the growth of Chlorella vulgaris (CCAP 211/11B, CS-42) and nutrient removal have been investigated under different concentrations of N (0–56 mg/L) and P (0–19 mg/L). The study showed that N/P ratio has a cr...
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| Format: | Journal Article |
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Taylor & Francis Ltd.
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/40876 |
| _version_ | 1848755988346175488 |
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| author | Al Ketife, A. Judd, S. Znad, Hussein |
| author_facet | Al Ketife, A. Judd, S. Znad, Hussein |
| author_sort | Al Ketife, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The synergistic effects and optimization of nitrogen (N) and phosphorus (P) concentrations on the growth of Chlorella vulgaris (CCAP 211/11B, CS-42) and nutrient removal have been investigated under different concentrations of N (0–56 mg/L) and P (0–19 mg/L). The study showed that N/P ratio has a crucial effect on the biomass growth and nutrient removal. When N/P=10, a complete P and N removal was achieved at the end of cultivation with specific growth rate (SGR) of 1 d-1 and biomass concentration of 1.58 g/L. It was also observed that when the N content <2.5 mg/L, the SGR significantly reduced from 1.04 to 0.23 d-1 and the maximum biomass produced was decreased more than three-fold to 0.5 g/L. The Box–Behnken experimental design and response surface method were used to study the effects of the initial concentrations (P, N and C) on P and N removal efficiencies. The optimized P, N and C concentrations supporting 100% removal of both P and N at an SGR of 0.95 were 7, 55 and 10 mg/L respectively, with desirability value of 0.94. The results and analysis obtained could be very useful when applying the microalgae for efficient wastewater treatment and nutrient removal. |
| first_indexed | 2025-11-14T09:05:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-40876 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:05:03Z |
| publishDate | 2016 |
| publisher | Taylor & Francis Ltd. |
| recordtype | eprints |
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| spelling | curtin-20.500.11937-408762017-09-13T14:03:54Z Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris Al Ketife, A. Judd, S. Znad, Hussein The synergistic effects and optimization of nitrogen (N) and phosphorus (P) concentrations on the growth of Chlorella vulgaris (CCAP 211/11B, CS-42) and nutrient removal have been investigated under different concentrations of N (0–56 mg/L) and P (0–19 mg/L). The study showed that N/P ratio has a crucial effect on the biomass growth and nutrient removal. When N/P=10, a complete P and N removal was achieved at the end of cultivation with specific growth rate (SGR) of 1 d-1 and biomass concentration of 1.58 g/L. It was also observed that when the N content <2.5 mg/L, the SGR significantly reduced from 1.04 to 0.23 d-1 and the maximum biomass produced was decreased more than three-fold to 0.5 g/L. The Box–Behnken experimental design and response surface method were used to study the effects of the initial concentrations (P, N and C) on P and N removal efficiencies. The optimized P, N and C concentrations supporting 100% removal of both P and N at an SGR of 0.95 were 7, 55 and 10 mg/L respectively, with desirability value of 0.94. The results and analysis obtained could be very useful when applying the microalgae for efficient wastewater treatment and nutrient removal. 2016 Journal Article http://hdl.handle.net/20.500.11937/40876 10.1080/09593330.2016.1186227 Taylor & Francis Ltd. restricted |
| spellingShingle | Al Ketife, A. Judd, S. Znad, Hussein Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris |
| title | Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris |
| title_full | Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris |
| title_fullStr | Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris |
| title_full_unstemmed | Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris |
| title_short | Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris |
| title_sort | synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater chlorella vulgaris |
| url | http://hdl.handle.net/20.500.11937/40876 |