Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading

Producción Científica

Detalles Bibliográficos
Autores: Ciani, Matilde, Vargas Estrada, Laura Gabriela, Adessi, Alessandra, Muñoz Torre, Raúl
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de Valladolid
Repositorio:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/78799
Acceso en línea:https://doi.org/10.1016/j.algal.2025.104290
https://uvadoc.uva.es/handle/10324/78799
Access Level:acceso abierto
Palabra clave:Biogas upgrading
Metabolites
Microalgae
Nutrient recovery
Wastewater dilution
3308 Ingeniería y Tecnología del Medio Ambiente
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spelling Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgradingCiani, MatildeVargas Estrada, Laura GabrielaAdessi, AlessandraMuñoz Torre, RaúlBiogas upgradingMetabolitesMicroalgaeNutrient recoveryWastewater dilution3308 Ingeniería y Tecnología del Medio AmbienteProducción CientíficaMicroalgae and cyanobacteria offer a promising platform for integrating sustainable technologies aligned with circular and green economy goals. However, current studies often focus on a limited number of genera and overlook how centrate dilution influences metabolite production. This study investigates the potential of the freshwater microalga Parachlorella hussii N9 and the marine cyanobacterium Cyanothece sp. CE4 for photobio- logical biogas upgrading coupled with nutrient recovery from centrate, assessing the impact of centrate dilution on carbohydrate and pigment content. By varying centrate concentration (5–50 %) in tap or seawater, this research explores how the biogas-to-centrate ratio can be adjusted for biomass production, TN and CO2 abate- ment, and to target specific metabolites, advancing circular bioeconomy strategies. The microalga exhibited faster growth than the cyanobacterium, achieving the stationary phase in three days, and higher cellular and soluble carbohydrate productivity (up to 237 and 75 mg L 1d 1, respectively). CO₂ abatement (almost complete in all treatments) reached ~513 ± 28 mg L 1 of culture, while nitrogen removal considering initial centrate concentration ranged between 32 and 250 mg N L 1, but 100 % TN removal was exhibited only with the lower centrate concentrations (5–10 %). These lower concentrations also induced the highest carbohydrate content in biomass (41–44 % dw). In contrast, pigment content increased with higher centrate concentrations: the micro- alga reached 3.6 % dw of chlorophyll at 50 % centrate, while the cyanobacterium produced up to 0.6 % dw of C- phycocyanin; both strains showed similar carotenoid content (0.4–0.5 % dw). This study highlights the potential of adjusting centrate dilution to target microalgal metabolism for integrated CO₂ capture, nutrient recovery, and bioproduct generation.This research was partially funded by the Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence (call Finanziamento di Azioni di Internazionalizzazione - FAI 2024).Elsevier2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.1016/j.algal.2025.104290https://uvadoc.uva.es/handle/10324/78799reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidIngléshttps://www.sciencedirect.com/science/article/pii/S2211926425004011info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/4.0/oai:uvadoc.uva.es:10324/787992026-06-13T12:44:47Z
dc.title.none.fl_str_mv Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
title Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
spellingShingle Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
Ciani, Matilde
Biogas upgrading
Metabolites
Microalgae
Nutrient recovery
Wastewater dilution
3308 Ingeniería y Tecnología del Medio Ambiente
title_short Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
title_full Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
title_fullStr Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
title_full_unstemmed Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
title_sort Digestate dilution shapes carbohydrate and pigment production during microalgal and cyanobacterial-based biogas upgrading
dc.creator.none.fl_str_mv Ciani, Matilde
Vargas Estrada, Laura Gabriela
Adessi, Alessandra
Muñoz Torre, Raúl
author Ciani, Matilde
author_facet Ciani, Matilde
Vargas Estrada, Laura Gabriela
Adessi, Alessandra
Muñoz Torre, Raúl
author_role author
author2 Vargas Estrada, Laura Gabriela
Adessi, Alessandra
Muñoz Torre, Raúl
author2_role author
author
author
dc.subject.none.fl_str_mv Biogas upgrading
Metabolites
Microalgae
Nutrient recovery
Wastewater dilution
3308 Ingeniería y Tecnología del Medio Ambiente
topic Biogas upgrading
Metabolites
Microalgae
Nutrient recovery
Wastewater dilution
3308 Ingeniería y Tecnología del Medio Ambiente
description Producción Científica
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.algal.2025.104290
https://uvadoc.uva.es/handle/10324/78799
url https://doi.org/10.1016/j.algal.2025.104290
https://uvadoc.uva.es/handle/10324/78799
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.sciencedirect.com/science/article/pii/S2211926425004011
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname:Universidad de Valladolid
instname_str Universidad de Valladolid
reponame_str UVaDOC. Repositorio Documental de la Universidad de Valladolid
collection UVaDOC. Repositorio Documental de la Universidad de Valladolid
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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