Innovative hybrid system for wastewater treatment: High-rate algal ponds for effluent treatment and biofilm reactor for biomass production and harvesting

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorAssis, Letícia Rodrigues de-
Autor(es): dc.creatorCalijuri, Maria Lúcia-
Autor(es): dc.creatorAssemany, Paula Peixoto-
Autor(es): dc.creatorSilva, Thiago Abrantes-
Autor(es): dc.creatorTeixeira, Jamily Santos-
Data de aceite: dc.date.accessioned2026-02-09T12:04:17Z-
Data de disponibilização: dc.date.available2026-02-09T12:04:17Z-
Data de envio: dc.date.issued2021-12-05-
Data de envio: dc.date.issued2021-12-05-
Data de envio: dc.date.issued2021-11-14-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/48632-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.jenvman.2020.111183-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1153683-
Descrição: dc.descriptionThe use of algal biomass still faces challenges associated with the harvesting stages. To address this issue, we propose an innovative hybrid system, in which a biofilm reactor (BR) operates as an algal biomass production and harvesting unit connected to a high-rate algal pond (HRAP), a wastewater treatment unit. BR did not interfered with the biomass chemical composition (protein = 32%, carbohydrates = 11% and total lipids = 18%), with the wastewater treatment (removals efficiency: chemical oxygen demand = 59%, ammonia nitrogen = 78%, total phosphorus = 16% and Escherichia coli = 1 log unit), and did not alter the sedimentation characteristics of the biomass (sludge volume index = 29 mg/L and humidity content = 92%) in the secondary settling tank of the hybrid system. On the other hand, the results showed that this technology achieved a biomass production about 2.6x greater than the conventional system without a BR, and the efficiency of harvesting of the hybrid system was 61%, against 22% obtained with the conventional system. In addition, the BR promoted an increase in the density (~1011 org/m2) and diversity of microalgae in the hybrid system. Chlorella vulgaris was the most abundant species (>60%) from the 4th week of operation until the end of the experiment. Hence, results confirm that the integration of BR into a wastewater treatment plant optimised the production and harvesting of biomass of the hybrid system, making it a promising technology. The importance of economic and environmental analysis studies of BR is highlighted in order to enable its implementation on a large scale.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Environmental Management-
Palavras-chave: dc.subjectAlgal biofilm-
Palavras-chave: dc.subjectAttached growth-
Palavras-chave: dc.subjectDomestic sewage-
Palavras-chave: dc.subjectMicroalgae-
Palavras-chave: dc.subjectSecondary settling tank-
Palavras-chave: dc.subjectBiofilme de algas-
Palavras-chave: dc.subjectCrescimento anexado-
Palavras-chave: dc.subjectEsgoto doméstico-
Palavras-chave: dc.subjectTanque de sedimentação secundário-
Título: dc.titleInnovative hybrid system for wastewater treatment: High-rate algal ponds for effluent treatment and biofilm reactor for biomass production and harvesting-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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