Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor
The treatment of nutrients and organic contaminants in wastewater using microalgae has drawn significant interest thanks to its advantages of environmental friendliness, low cost, CO<sub>2</sub> emission reduction, and recycling of valuable biomass. Among other algae species, <i>Ch...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/22/3645 |
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| author | Minh Tuan Nguyen Thao Phuong Nguyen Tung Huu Pham Thuy Thi Duong Manh Van Do Tuyen Van Trinh Quynh Thi Xuan Nguyen Viet M. Trinh |
| author_facet | Minh Tuan Nguyen Thao Phuong Nguyen Tung Huu Pham Thuy Thi Duong Manh Van Do Tuyen Van Trinh Quynh Thi Xuan Nguyen Viet M. Trinh |
| author_sort | Minh Tuan Nguyen |
| collection | DOAJ |
| description | The treatment of nutrients and organic contaminants in wastewater using microalgae has drawn significant interest thanks to its advantages of environmental friendliness, low cost, CO<sub>2</sub> emission reduction, and recycling of valuable biomass. Among other algae species, <i>Chlorella</i> sp. showed good vitality, simplicity in cultivation, and high nutrient accumulation in harsh conditions of wastewater. In this study, <i>Chlorella vulgaris</i> was inoculated in a membrane photobioreactor (MPBR) with piggery digestate to investigate the <i>C. vulgaris</i> growth rate and the removal efficiency of nutrients and chemical oxygen demand (COD). The results indicated that the cultivation of <i>C. vulgaris</i> in an MPBR system exhibited continuous and simultaneous removal of NH<sub>4</sub><sup>+</sup>, PO<sub>4</sub><sup>3−</sup>, and COD from two-fold diluted piggery wastewater. Both the algae growth rate and nutrient removal depended on the liquid hydraulic retention time in the MPBR. The highest removal efficiency of NH<sub>4</sub><sup>+</sup> (74.55%), PO<sub>4</sub><sup>3−</sup> (70.20%), and COD (65.85%) was obtained in the longest HRT of 5 days with the highest microalgae biomass concentration of around 1.1 g/L. The algae washout phenomenon was negligible in the continuous cultivation in the MPBR system. Compared to the cultivation in batch mode, the MPBR could achieve a similar algae growth rate and treatment efficiency with a much shorter hydraulic retention time. |
| first_indexed | 2024-03-09T17:56:01Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T17:56:01Z |
| publishDate | 2022-11-01 |
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| series | Water |
| spelling | doaj.art-39eacf7bae8d406cb552f47a0e6993b02023-11-24T10:20:38ZengMDPI AGWater2073-44412022-11-011422364510.3390/w14223645Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane PhotobioreactorMinh Tuan Nguyen0Thao Phuong Nguyen1Tung Huu Pham2Thuy Thi Duong3Manh Van Do4Tuyen Van Trinh5Quynh Thi Xuan Nguyen6Viet M. Trinh7Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamInstitute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamInstitute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamInstitute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamInstitute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamInstitute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamInstitute of Environmental Engineering and Management, National Taipei of Technology, Taipei 106, TaiwanInstitute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Dist., Hanoi 100000, VietnamThe treatment of nutrients and organic contaminants in wastewater using microalgae has drawn significant interest thanks to its advantages of environmental friendliness, low cost, CO<sub>2</sub> emission reduction, and recycling of valuable biomass. Among other algae species, <i>Chlorella</i> sp. showed good vitality, simplicity in cultivation, and high nutrient accumulation in harsh conditions of wastewater. In this study, <i>Chlorella vulgaris</i> was inoculated in a membrane photobioreactor (MPBR) with piggery digestate to investigate the <i>C. vulgaris</i> growth rate and the removal efficiency of nutrients and chemical oxygen demand (COD). The results indicated that the cultivation of <i>C. vulgaris</i> in an MPBR system exhibited continuous and simultaneous removal of NH<sub>4</sub><sup>+</sup>, PO<sub>4</sub><sup>3−</sup>, and COD from two-fold diluted piggery wastewater. Both the algae growth rate and nutrient removal depended on the liquid hydraulic retention time in the MPBR. The highest removal efficiency of NH<sub>4</sub><sup>+</sup> (74.55%), PO<sub>4</sub><sup>3−</sup> (70.20%), and COD (65.85%) was obtained in the longest HRT of 5 days with the highest microalgae biomass concentration of around 1.1 g/L. The algae washout phenomenon was negligible in the continuous cultivation in the MPBR system. Compared to the cultivation in batch mode, the MPBR could achieve a similar algae growth rate and treatment efficiency with a much shorter hydraulic retention time.https://www.mdpi.com/2073-4441/14/22/3645<i>Chlorella vulgaris</i>membrane photobioreactorpiggery wastewaternutrients removalCOD removal |
| spellingShingle | Minh Tuan Nguyen Thao Phuong Nguyen Tung Huu Pham Thuy Thi Duong Manh Van Do Tuyen Van Trinh Quynh Thi Xuan Nguyen Viet M. Trinh Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor Water <i>Chlorella vulgaris</i> membrane photobioreactor piggery wastewater nutrients removal COD removal |
| title | Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor |
| title_full | Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor |
| title_fullStr | Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor |
| title_full_unstemmed | Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor |
| title_short | Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of <i>Chlorella vulgaris</i> in a Pilot-Scaled Membrane Photobioreactor |
| title_sort | removal of nutrients and cod in wastewater from vietnamese piggery farm by the culture of i chlorella vulgaris i in a pilot scaled membrane photobioreactor |
| topic | <i>Chlorella vulgaris</i> membrane photobioreactor piggery wastewater nutrients removal COD removal |
| url | https://www.mdpi.com/2073-4441/14/22/3645 |
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