Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery
Microalgae can produce biostimulants in form of phytohormones, which are compounds that, even if applied in low concentrations, can have stimulant effects on plants growth and can enhance their quality and their resistance to stress. Considering that microalgal biomass can grow recovering nutrients...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/398961 |
| Acceso en línea: | https://hdl.handle.net/2117/398961 https://dx.doi.org/10.1016/j.scitotenv.2023.166878 |
| Access Level: | acceso abierto |
| Palabra clave: | Microalgae -- Biotechnology Biostimulants Circular economy Municipal wastewater Nutrients recovery Phytohormones Sustainable production Microalgues -- Biotecnologia Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua |
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Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recoveryÁlvarez González, AnaMorais, Etiele Greque de|||0000-0003-2993-8572Planas Carbonell, AnnaUggetti, Enrica|||0000-0001-6919-485XMicroalgae -- BiotechnologyBiostimulantsCircular economyMunicipal wastewaterNutrients recoveryPhytohormonesSustainable productionMicroalgues -- BiotecnologiaÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aiguaMicroalgae can produce biostimulants in form of phytohormones, which are compounds that, even if applied in low concentrations, can have stimulant effects on plants growth and can enhance their quality and their resistance to stress. Considering that microalgal biomass can grow recovering nutrients from wastewater, this circular approach allows to use residues for the production of high added value compounds (such as phytohormones) at low cost. The interest on biostimulants production from microalgae have recently raised. Scientists are focused on the direct application of these cellular extracts on plants, while the number of studies on the identification of bioactive molecules, such as phytohormones, is very scarce. Two cyanobacteria strains (Synechocystis sp. (SY) and Phormidium sp. (PH)) and a chlorophyte (Scenedesmus sp. (SC)) were cultured in laboratory-scale PBRs with a working volume of 2.5 L in secondary urban wastewater varying N:P ratio in the cultures to obtain the highest productivity. The variation of N:P ratio affects microalgae growth, and SY and PH presented higher productivities (73 and 48 mg L-1 d, respectively) under higher N:P ratio (> 22:1). Microalgal biomass was freeze-dried and phytohormones content was measured with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The three microalgae showed similar phytohormones profiles, being the auxin (indole-3-acetic acid, IAA) the most abundant (72 ng g-1DW in SY). Proteins were major macronutrient for all strains, reaching 48 %DW in PH culture. To optimize the biostimulants production, a balance between the production of such compounds, biomass productivity and nutrients removal should be taken into consideration. In this sense, SC was the most promising strain, showing the highest N and P removal rates (73 % and 59 %, respectively) while producing phytohormones.This research was supported by the Spanish Ministry of Science and Innovation (CYRCLE-PID2020-113866RA-I00). E. Uggetti would like to thank the Spanish Ministry of Industry and Economy for her research grant (RYC2018-025514-I). A. Álvarez-González kindly acknowledge the Departament de Recerca i Universitats de la Generalitat de Catalunya for her PhD scholarship (FI AGAUR 2022FI_B 00488).Peer ReviewedElsevier20232023-12-0120242024-01-09journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/398961https://dx.doi.org/10.1016/j.scitotenv.2023.166878reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-113866RA-I00 PRODUCCION DE BIOESTIMULANTES A PARTIR DE CIANOBACTERIAS Y AGUA RESIDUAL EN EL MARCO DE LA BIOECONOMIA CIRCULARopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3989612026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| title |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| spellingShingle |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery Álvarez González, Ana Microalgae -- Biotechnology Biostimulants Circular economy Municipal wastewater Nutrients recovery Phytohormones Sustainable production Microalgues -- Biotecnologia Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua |
| title_short |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| title_full |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| title_fullStr |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| title_full_unstemmed |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| title_sort |
Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery |
| dc.creator.none.fl_str_mv |
Álvarez González, Ana Morais, Etiele Greque de|||0000-0003-2993-8572 Planas Carbonell, Anna Uggetti, Enrica|||0000-0001-6919-485X |
| author |
Álvarez González, Ana |
| author_facet |
Álvarez González, Ana Morais, Etiele Greque de|||0000-0003-2993-8572 Planas Carbonell, Anna Uggetti, Enrica|||0000-0001-6919-485X |
| author_role |
author |
| author2 |
Morais, Etiele Greque de|||0000-0003-2993-8572 Planas Carbonell, Anna Uggetti, Enrica|||0000-0001-6919-485X |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Microalgae -- Biotechnology Biostimulants Circular economy Municipal wastewater Nutrients recovery Phytohormones Sustainable production Microalgues -- Biotecnologia Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua |
| topic |
Microalgae -- Biotechnology Biostimulants Circular economy Municipal wastewater Nutrients recovery Phytohormones Sustainable production Microalgues -- Biotecnologia Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua |
| description |
Microalgae can produce biostimulants in form of phytohormones, which are compounds that, even if applied in low concentrations, can have stimulant effects on plants growth and can enhance their quality and their resistance to stress. Considering that microalgal biomass can grow recovering nutrients from wastewater, this circular approach allows to use residues for the production of high added value compounds (such as phytohormones) at low cost. The interest on biostimulants production from microalgae have recently raised. Scientists are focused on the direct application of these cellular extracts on plants, while the number of studies on the identification of bioactive molecules, such as phytohormones, is very scarce. Two cyanobacteria strains (Synechocystis sp. (SY) and Phormidium sp. (PH)) and a chlorophyte (Scenedesmus sp. (SC)) were cultured in laboratory-scale PBRs with a working volume of 2.5 L in secondary urban wastewater varying N:P ratio in the cultures to obtain the highest productivity. The variation of N:P ratio affects microalgae growth, and SY and PH presented higher productivities (73 and 48 mg L-1 d, respectively) under higher N:P ratio (> 22:1). Microalgal biomass was freeze-dried and phytohormones content was measured with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The three microalgae showed similar phytohormones profiles, being the auxin (indole-3-acetic acid, IAA) the most abundant (72 ng g-1DW in SY). Proteins were major macronutrient for all strains, reaching 48 %DW in PH culture. To optimize the biostimulants production, a balance between the production of such compounds, biomass productivity and nutrients removal should be taken into consideration. In this sense, SC was the most promising strain, showing the highest N and P removal rates (73 % and 59 %, respectively) while producing phytohormones. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 2023-12-01 2024 2024-01-09 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/398961 https://dx.doi.org/10.1016/j.scitotenv.2023.166878 |
| url |
https://hdl.handle.net/2117/398961 https://dx.doi.org/10.1016/j.scitotenv.2023.166878 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-113866RA-I00 PRODUCCION DE BIOESTIMULANTES A PARTIR DE CIANOBACTERIAS Y AGUA RESIDUAL EN EL MARCO DE LA BIOECONOMIA CIRCULAR |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
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openAccess |
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application/pdf |
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Elsevier |
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Elsevier |
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reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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