Role of Microalgae in the Recovery of Nutrients from Pig Manure
Animal production inevitably causes the emission of greenhouse gases and the generation of large amounts of slurry, both representing a serious environmental problem. Photosynthetic microorganisms such as microalgae and cyanobacteria have been proposed as alternative strategies to bioremediate agric...
| Main Authors: | , , , , , |
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| Format: | info:eu-repo/semantics/article |
| Language: | English |
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MDPI
2021
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10835/9509 |
| _version_ | 1789406289927864320 |
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| author | Sánchez Zurano, Ana Ciardi, Martina Lafarga, Tomás Fernández Sevilla, José María Bermejo Román, Ruperto Molina Grima, Emilio |
| author_facet | Sánchez Zurano, Ana Ciardi, Martina Lafarga, Tomás Fernández Sevilla, José María Bermejo Román, Ruperto Molina Grima, Emilio |
| author_sort | Sánchez Zurano, Ana |
| collection | DSpace |
| description | Animal production inevitably causes the emission of greenhouse gases and the generation of large amounts of slurry, both representing a serious environmental problem. Photosynthetic microorganisms such as microalgae and cyanobacteria have been proposed as alternative strategies to bioremediate agricultural waste while consuming carbon dioxide and producing valuable biomass. The current study assessed the potential of the microalga Scenedesmus sp. to remove nutrients from piggery wastewater (PWW) and the influence of the microalga on the microbial consortia. Maximum N-NH4+ consumption was 55.3 ± 3.7 mg·L−1·day−1 while P-PO43− removal rates were in the range 0.1–1.9 mg·L−1·day−1. N-NH4+ removal was partially caused by the action of nitrifying bacteria, which led to the production of N-NO3−. N-NO3− production values where lower when microalgae were more active. This work demonstrated that the photosynthetic activity of microalgae allows us to increase nutrient removal rates from PWW and to reduce the coliform bacterial load of the effluent, minimising both their environmental impact and health risks. Microalgae assimilated part of the N-NH4+ present in the media to produce biomass and did not to convert it into N-NO3− as in traditional processes. |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-9509 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2021 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-95092023-04-12T19:34:01Z Role of Microalgae in the Recovery of Nutrients from Pig Manure Sánchez Zurano, Ana Ciardi, Martina Lafarga, Tomás Fernández Sevilla, José María Bermejo Román, Ruperto Molina Grima, Emilio Scenedesmus waste treatment biotechnology photosynthesis respirometry biomass Animal production inevitably causes the emission of greenhouse gases and the generation of large amounts of slurry, both representing a serious environmental problem. Photosynthetic microorganisms such as microalgae and cyanobacteria have been proposed as alternative strategies to bioremediate agricultural waste while consuming carbon dioxide and producing valuable biomass. The current study assessed the potential of the microalga Scenedesmus sp. to remove nutrients from piggery wastewater (PWW) and the influence of the microalga on the microbial consortia. Maximum N-NH4+ consumption was 55.3 ± 3.7 mg·L−1·day−1 while P-PO43− removal rates were in the range 0.1–1.9 mg·L−1·day−1. N-NH4+ removal was partially caused by the action of nitrifying bacteria, which led to the production of N-NO3−. N-NO3− production values where lower when microalgae were more active. This work demonstrated that the photosynthetic activity of microalgae allows us to increase nutrient removal rates from PWW and to reduce the coliform bacterial load of the effluent, minimising both their environmental impact and health risks. Microalgae assimilated part of the N-NH4+ present in the media to produce biomass and did not to convert it into N-NO3− as in traditional processes. 2021-02-01T09:04:25Z 2021-02-01T09:04:25Z 2021-01-21 info:eu-repo/semantics/article 2227-9717 http://hdl.handle.net/10835/9509 en https://www.mdpi.com/2227-9717/9/2/203 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI |
| spellingShingle | Scenedesmus waste treatment biotechnology photosynthesis respirometry biomass Sánchez Zurano, Ana Ciardi, Martina Lafarga, Tomás Fernández Sevilla, José María Bermejo Román, Ruperto Molina Grima, Emilio Role of Microalgae in the Recovery of Nutrients from Pig Manure |
| title | Role of Microalgae in the Recovery of Nutrients from Pig Manure |
| title_full | Role of Microalgae in the Recovery of Nutrients from Pig Manure |
| title_fullStr | Role of Microalgae in the Recovery of Nutrients from Pig Manure |
| title_full_unstemmed | Role of Microalgae in the Recovery of Nutrients from Pig Manure |
| title_short | Role of Microalgae in the Recovery of Nutrients from Pig Manure |
| title_sort | role of microalgae in the recovery of nutrients from pig manure |
| topic | Scenedesmus waste treatment biotechnology photosynthesis respirometry biomass |
| url | http://hdl.handle.net/10835/9509 |
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