2024-03-19T09:27:22Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/532532023-08-24T08:25:50Zcom_10324_1173com_10324_931com_10324_894col_10324_1371
Sepúlveda Muñoz, Cristian Andrés
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600
Hontiyuelo, Gorka
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600
Torres Franco, Andrés Felipe
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600
Muñoz Torre, Raúl
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0000-0003-1207-6275
2022-05-05T11:36:26Z
2022-05-05T11:36:26Z
2022
Journal of Water Process Engineering, 2022, vol. 47, 102825
2214-7144
https://uvadoc.uva.es/handle/10324/53253
10.1016/j.jwpe.2022.102825
Producción Científica
Nowadays, piggery wastewater (PWW) management still represents an unsolved global environmental problem. Photosynthetic processes have emerged as an innovative biological platform capable of performing a cost-effective treatment of wastewater with a concomitant assimilation of nutrients into biomass. In this work, the performance of a purple phototrophic bacteria photobioreactor (PPB-PBR) coupled with a microalgae-bacteria photobioreactor (MB-PBR) was assessed during the treatment of PWW at an hydraulic retention time (HRT) of 12.2 (stage I) and 6.2 days (stages II–VI) and intensities of near-infrared radiation in the PPB-PBR of 30 W m−2 (stages I–II) and 114 W m−2 (stages III–IV). Maximum removal efficiencies of total dissolved organic carbon (TOC-RE) and total dissolved nitrogen (TN-RE) of 91% and 82%, respectively, were recorded at an HRT of 12.2 days. The decrease in HRT to 6.2 days reduced the TOC-RE and TN-RE in both photobioreactors, but the increase in near-infrared radiation enhanced TOC-RE in the PPB-PBR, contributing to a global carbon recovery of 67% via assimilation in the form of PPB biomass. PPB-PBR was highly efficient in carbon assimilation, while MB-PBR enhanced nitrogen and total suspended solids removals, with a contribution to TN-RE of 63% and a global decrease in TSS of 76%. The culture broth of PPB-PBR was dominated by Rhodopseudomonas sp. up to 54%, supported by the high HRT and the increase in near-infrared radiation, while the sequential MB-PBR favoured the dominance of Mychonastes homosphaera. This work demonstrated, for the first time, the high efficiency of sequentially coupling PPB and microalgae for the treatment of PWW.
Junta de Castilla y León - Fondo Europeo de Desarrollo Regional (projects CLU 2017-09 and UIC 315)
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) (grant PFCHA/DOCTORADO BECAS CHILE/2017 – 72180211)
application/pdf
eng
Elsevier
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
© 2022 The Authors
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Atribución 4.0 Internacional
Algae
Algas
Nutrient recovery
Recuperación de nutrientes
Swine manure
Estiércol porcino
Photosynthetic treatment of piggery wastewater in sequential purple phototrophic bacteria and microalgae-bacteria photobioreactors
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
https://www.sciencedirect.com/science/article/pii/S2214714422002690?via%3Dihub
SI
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Photosynthetic-treatment-piggery-wastewater.pdf
Photosynthetic-treatment-piggery-wastewater.pdf
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2023-08-24 10:25:50.746
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