Impacts of tropical climate on outdoor treatment of anaerobically digested sanitary wastewater using native microalgae

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorCardozo, Gabriela Santos-
Autor(es): dc.creatorRuas, Graziele-
Autor(es): dc.creatorFiore, Fabiana Alves-
Autor(es): dc.creatorSilva, Gustavo Henrique Ribeiro-
Data de aceite: dc.date.accessioned2025-08-21T19:44:10Z-
Data de disponibilização: dc.date.available2025-08-21T19:44:10Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-01-29-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.heliyon.2025.e41848-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/303534-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/303534-
Descrição: dc.descriptionMicroalgal technologies interact with other processes, enabling treatment systems to remove nutrients and pollutants while facilitating the reuse of final effluents. However, the development of these systems in various climates and their specific characteristics has been poorly studied. The objective of this work was to evaluate the influence of different tropical seasons within the Cerrado Biome on effluent treatment in a closed photobioreactor using a consortium of native microalgae. Cultivation was performed on a bench scale using anaerobically digested sanitary wastewater processed by two mechanisms from the wastewater treatment plant in Bauru, Brazil: the Upflow Anaerobic Filter (UAF) and the Anaerobic Baffled Reactor (ABR). The cultivation took place in an outdoor area with constant aeration and under natural climatic conditions during two seasons: summer and winter. Each season's cultivation occurred in triplicate over 7 days. After cultivation, the effluent and microalgal biomass were separated using a tannin-based organic coagulant (Tanfloc SG) to evaluate effluent quality for non-potable reuse. During summer, the treatment of anaerobically digested sanitary wastewater from UAF achieved 76 ± 3 % and 84 ± 1.2 % phosphorus and nitrogen removal, respectively, while the treatment of anaerobically digested sanitary wastewater from ABR achieved 83 ± 4 % and 85 ± 3 % phosphorus and nitrogen removal, respectively. In winter, 86 ± 2 % and 89 ± 5 % of phosphorus and nitrogen, respectively, were removed from the anaerobically digested sanitary wastewater from UAF, while 68 ± 6 % and 93 ± 3 % were removed from the anaerobically digested sanitary wastewater from ABR. The removal of generic bacteria exceeded 3.0 log for most conditions, with the summer experiments showing absolute values of E. coli below 100 CFU·100 ml⁻1, indicating that the effluent could be used for unrestricted irrigation. Microalgal technology can serve as a tertiary treatment in countries with tropical climates, promoting the reintegration of water into the production cycle, which aligns with circular economy principles.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionBauru College of Engineering Department of Civil and Environmental Engineering São Paulo State University (UNESP), Av. Engenheiro Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, SP-
Descrição: dc.descriptionScience and Technology Institute of São José dos Campos Department of Environmental Engineering São Paulo State University (UNESP), Av. Engenheiro Francisco José Longo, 777, Jardim São Dimas, SP-
Descrição: dc.descriptionBauru College of Engineering Department of Civil and Environmental Engineering São Paulo State University (UNESP), Av. Engenheiro Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, SP-
Descrição: dc.descriptionScience and Technology Institute of São José dos Campos Department of Environmental Engineering São Paulo State University (UNESP), Av. Engenheiro Francisco José Longo, 777, Jardim São Dimas, SP-
Descrição: dc.descriptionFAPESP: 2018/18367-1-
Descrição: dc.descriptionCNPq: 309064/2018-0-
Descrição: dc.descriptionCNPq: 427936/2018-7-
Idioma: dc.languageen-
Relação: dc.relationHeliyon-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectEffluent reuse-
Palavras-chave: dc.subjectMicroalgae-
Palavras-chave: dc.subjectNutrient removal-
Palavras-chave: dc.subjectTropical climate-
Palavras-chave: dc.subjectWastewater treatment-
Título: dc.titleImpacts of tropical climate on outdoor treatment of anaerobically digested sanitary wastewater using native microalgae-
Tipo de arquivo: dc.typelivro digital-
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