Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes
Industrial aquaculture has grown rapidly due to the increase in world demand for fish and shellfish, which has stimulated the development of aquaculture systems for the cultivation of marine species. The need to maintain high levels of productivity makes them complex unstable systems, prone to dist...
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| Format: | Article |
| Language: | English |
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Universidad Técnica de Manabí
2021-04-01
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| Series: | AquaTechnica |
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| Online Access: | https://revistas.utm.edu.ec/index.php/aquatechnica/article/view/3484 |
| _version_ | 1811225640365457408 |
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| author | Jorge Silva-Acosta Christian Canales Valenzuela Sergio Rodríguez Leal |
| author_facet | Jorge Silva-Acosta Christian Canales Valenzuela Sergio Rodríguez Leal |
| author_sort | Jorge Silva-Acosta |
| collection | DOAJ |
| description | Industrial aquaculture has grown rapidly due to the increase in world demand for fish and shellfish, which has stimulated the development of aquaculture systems for the cultivation of marine species. The need to maintain high levels of productivity makes them complex unstable systems, prone to disturbances with the potential risk of causing problems of contamination of the natural environment. In intensive aquaculture operations, it is estimated that in the transformation processes for the development and growth of biomass, approximately 75% of the feed is released in the form of nitrogen and phosphorus. During the last decades, efforts have been made to develop processes for the elimination of these nutrients-pollutants, which would otherwise be released into natural water bodies causing eutrophication. The recirculating aquaculture system (RAS) is the conventional culture system; it includes a nutrient removal stage with biofilters of aerobic bacteria that favor the nitrification process, although the biofilter technology has operational difficulties such as the decrease in oxygen concentration, accumulation of organic matter and difficulty of back-rinsing, among others. Thus, options have emerged based on the activity of photoautotrophic organisms, taking advantage of the ability of aquatic plants, macro and microalgae, to effectively eliminate nutrients-pollutants (phytodepuration), consuming in addition to carbon and nitrogen, also phosphorus, the latter without the ability to be removed with nitrifying biofilters. However, this treatment strategy has not been used in intensive aquaculture due to the high availability of the area in demand, which exceeds that required by compact equipment for nitrifying biofiltration. Mixotrophic phytodepuration, which corresponds to the integration of two tertiary wastewater treatment technologies (biofiltration-autotrophic and phytodepuration), could be an efficient response for the treatment of aquaculture wastewater, given the interaction between the organisms involved. For this reason, this review focuses on the potential use of mixotrophic cultivation for the control of nutrients-pollutants in "RAS" or aquaculture wastewater, in addition to contributing to the development of circular economy. |
| first_indexed | 2024-04-12T09:10:45Z |
| format | Article |
| id | doaj.art-baede04bf72e4e8792acbdeaf058bfb4 |
| institution | Directory Open Access Journal |
| issn | 2737-6095 |
| language | English |
| last_indexed | 2024-04-12T09:10:45Z |
| publishDate | 2021-04-01 |
| publisher | Universidad Técnica de Manabí |
| record_format | Article |
| series | AquaTechnica |
| spelling | doaj.art-baede04bf72e4e8792acbdeaf058bfb42022-12-22T03:38:58ZengUniversidad Técnica de ManabíAquaTechnica2737-60952021-04-01313754https://doi.org/10.5281/zenodo.5196173Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes Jorge Silva-Acosta 0https://orcid.org/0000-0002-2452-2327Christian Canales Valenzuela 1Sergio Rodríguez Leal 2Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile. Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile. Ingeniería y Bionegocios FDM Spa, Concepción, Chile. Industrial aquaculture has grown rapidly due to the increase in world demand for fish and shellfish, which has stimulated the development of aquaculture systems for the cultivation of marine species. The need to maintain high levels of productivity makes them complex unstable systems, prone to disturbances with the potential risk of causing problems of contamination of the natural environment. In intensive aquaculture operations, it is estimated that in the transformation processes for the development and growth of biomass, approximately 75% of the feed is released in the form of nitrogen and phosphorus. During the last decades, efforts have been made to develop processes for the elimination of these nutrients-pollutants, which would otherwise be released into natural water bodies causing eutrophication. The recirculating aquaculture system (RAS) is the conventional culture system; it includes a nutrient removal stage with biofilters of aerobic bacteria that favor the nitrification process, although the biofilter technology has operational difficulties such as the decrease in oxygen concentration, accumulation of organic matter and difficulty of back-rinsing, among others. Thus, options have emerged based on the activity of photoautotrophic organisms, taking advantage of the ability of aquatic plants, macro and microalgae, to effectively eliminate nutrients-pollutants (phytodepuration), consuming in addition to carbon and nitrogen, also phosphorus, the latter without the ability to be removed with nitrifying biofilters. However, this treatment strategy has not been used in intensive aquaculture due to the high availability of the area in demand, which exceeds that required by compact equipment for nitrifying biofiltration. Mixotrophic phytodepuration, which corresponds to the integration of two tertiary wastewater treatment technologies (biofiltration-autotrophic and phytodepuration), could be an efficient response for the treatment of aquaculture wastewater, given the interaction between the organisms involved. For this reason, this review focuses on the potential use of mixotrophic cultivation for the control of nutrients-pollutants in "RAS" or aquaculture wastewater, in addition to contributing to the development of circular economy.https://revistas.utm.edu.ec/index.php/aquatechnica/article/view/3484acuicultura intensivabiofiltro nitrificantetratamiento de aguabiomasaeconomía circularintensive aquaculturenitrifying biofilterwater treatmentbiomasscircular economy |
| spellingShingle | Jorge Silva-Acosta Christian Canales Valenzuela Sergio Rodríguez Leal Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes AquaTechnica acuicultura intensiva biofiltro nitrificante tratamiento de agua biomasa economía circular intensive aquaculture nitrifying biofilter water treatment biomass circular economy |
| title | Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes |
| title_full | Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes |
| title_fullStr | Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes |
| title_full_unstemmed | Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes |
| title_short | Fitodepuración mixotrófica en sistemas de recirculación acuícola (RAS) para el manejo sustentable de nutrientes contaminantes |
| title_sort | fitodepuracion mixotrofica en sistemas de recirculacion acuicola ras para el manejo sustentable de nutrientes contaminantes |
| topic | acuicultura intensiva biofiltro nitrificante tratamiento de agua biomasa economía circular intensive aquaculture nitrifying biofilter water treatment biomass circular economy |
| url | https://revistas.utm.edu.ec/index.php/aquatechnica/article/view/3484 |
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