2026-04-27T21:44:44Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/636292025-02-28T07:12:18Zcom_10324_35294com_10324_952com_10324_894col_10324_35295
Wastewater treatment using photosynthetic microorganisms
Sepúlveda Muñoz, Cristian Andrés
Godos Crespo, Ignacio de
Muñoz Torre, Raúl
Biomass
Biomasa
Renewable energy resources
Energies renovables
Microalgae
Microalgas
Nutrient recovery
Sustainability
Desarrollo sostenible
Photosynthetic bacteria
Bacterias fotosintéticas
Manure
Residuos ganaderos
Sewage - Purification
Aguas residuales - Depuración
Producción Científica
Wastewaters are mainly classified as domestic, industrial and agro-industrial based on their production source. Piggery wastewater (PWW) is a livestock wastewater characterized by its high concentrations of organic matter and ammonium, and by its odour nuisance. Traditionally, PWW has been treated in open anaerobic lagoons, anaerobic digesters and activated sludge systems, which exhibit high greenhouse gas emissions, a limited nutrients removal and a high energy consumption, respectively. Photosynthetic microorganisms can support a sustainable wastewater treatment in engineered photobioreactors at low operating costs and with an efficient recovery of carbon, nitrogen and phosphorous. These microorganisms are capable of absorbing solar irradiation through the photosynthesis process to obtain energy, which is used for their growth and associated carbon and nutrients assimilation. Purple phototrophic bacteria (PPB) represent the photosynthetic microorganisms with the most versatile metabolism in nature, whereas microalgae are the most-studied photosynthetic microorganisms in recent years. This review describes the fundamentals, symmetry and asymmetry of wastewater treatment using photosynthetic microorganisms such as PPB and microalgae. The main photobioreactor configurations along with the potential of PPB and microalgae biomass valorisation strategies are also discussed.
2023-12-14
2023-12-14
2023
info:eu-repo/semantics/article
Symmetry, 2023, Vol. 15, Nº. 2, 525
2073-8994
https://uvadoc.uva.es/handle/10324/63629
10.3390/sym15020525
525
2
Symmetry
15
2073-8994
eng
https://www.mdpi.com/2073-8994/15/2/525
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
© 2023 The authors
Atribución 4.0 Internacional
MDPI