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dc.creatorOliveira, Adriana Paulo de Sousa-
dc.creatorAssemany, Paula-
dc.creatorCovell, Lidiane-
dc.creatorCalijuri, Maria Lúcia-
dc.date.accessioned2023-06-30T20:08:07Z-
dc.date.available2023-06-30T20:08:07Z-
dc.date.issued2023-05-
dc.identifier.citationOLIVEIRA, A. P. de S. et al. Copper multifaceted interferences during swine wastewater treatment in high-rate algal ponds: alterations on nutrient removal, biomass composition and resource recovery. Environmental Pollution, [S.l.], v. 324, May 2023.pt_BR
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0269749123003664pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/58021-
dc.description.abstractMicroalgae 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.pt_BR
dc.languageen_USpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceEnvironmental Pollutionpt_BR
dc.subjectChlorella sp.pt_BR
dc.subjectAgroindustrial effluentpt_BR
dc.subjectNitrogen removalpt_BR
dc.subjectPhosphorus removalpt_BR
dc.subjectCopper removalpt_BR
dc.subjectResource recoverypt_BR
dc.titleCopper multifaceted interferences during swine wastewater treatment in high-rate algal ponds: alterations on nutrient removal, biomass composition and resource recoverypt_BR
dc.typeArtigopt_BR
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