Copper multifaceted interferences during swine wastewater treatment in high-rate algal ponds: alterations on nutrient removal, biomass composition and resource recovery

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorOliveira, Adriana Paulo de Sousa-
Autor(es): dc.creatorAssemany, Paula-
Autor(es): dc.creatorCovell, Lidiane-
Autor(es): dc.creatorCalijuri, Maria Lúcia-
Data de aceite: dc.date.accessioned2026-02-09T12:19:06Z-
Data de disponibilização: dc.date.available2026-02-09T12:19:06Z-
Data de envio: dc.date.issued2023-06-30-
Data de envio: dc.date.issued2023-06-30-
Data de envio: dc.date.issued2023-05-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/58021-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0269749123003664-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1158880-
Descrição: dc.descriptionMicroalgae cultivation in swine wastewater (SW) allows the removal of nutrients and biomass production. However, SW is known for its Cu contamination, and its effects on algae cultivation systems such as high-rate algal ponds (HRAPs) are poorly understood. This gap in the literature limits the proposition of adequate concentrations of Cu to optimise SW treatment and resource recovery in HRAPs. For this assessment, 12 HRAPs installed outdoors were operated with 800 L of SW with different Cu concentrations (0.1–4.0 mg/L). Cu's interferences on the growth and composition of biomass and nutrient removal from SW were investigated through mass balance and experimental modelling. The results showed that the concentration of 1.0 mg Cu/L stimulated microalgae growth, and above 3.0 mg Cu/L caused inhibition accompanied by an accumulation of H2O2. Furthermore, Cu affected the contents of lipids and carotenoids observed in the biomass; the highest concentration was observed in the control (16%) and 0.5 mg Cu/L (1.6 mg/g), respectively. An innovative result was verified for nutrient removal, in which increased Cu concentration reduced the N–NH4+ removal rate. In contrast, the soluble P removal rate was enhanced by 2.0 mg Cu/L. Removal of soluble Cu in treated SW reached 91%. However, the action of microalgae in this process was not associated with assimilation but with a pH increase resulting from photosynthesis. A preliminary evaluation of economic viability showed that the commercialisation of biomass considering the concentration of carotenoids obtained in HRAPs with 0.5 mg Cu/L could be economically attractive. In conclusion, Cu affected the different parameters evaluated in this study in a complex way. This can help managers consort nutrient removal, biomass production, and resource recovery, providing information for possible industrial exploitation of the generated bioproducts.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceEnvironmental Pollution-
Palavras-chave: dc.subjectChlorella sp.-
Palavras-chave: dc.subjectAgroindustrial effluent-
Palavras-chave: dc.subjectNitrogen removal-
Palavras-chave: dc.subjectPhosphorus removal-
Palavras-chave: dc.subjectCopper removal-
Palavras-chave: dc.subjectResource recovery-
Título: dc.titleCopper multifaceted interferences during swine wastewater treatment in high-rate algal ponds: alterations on nutrient removal, biomass composition and resource recovery-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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