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EFFECTS OF NITROGEN AND PHOSPHORUS ON BIOCHEMICAL COMPOSITION OF MICROALGAE POLYCULTURE HARVESTD

EFFECTS OF NITROGEN AND PHOSPHORUS ON BIOCHEMICAL COMPOSITION OF MICROALGAE POLYCULTURE HARVESTD

BIBLIOTECA - Trabalhos Acadêmicos
  • 3 horas de carga horária
  • 1 aula
  • 1 módulo de conteúdo
  • Última atualização 29/06/2023
  • 1 arquivo para download

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TÍTULO

EFFECTS OF NITROGEN AND PHOSPHORUS ON BIOCHEMICAL COMPOSITION OF MICROALGAE POLYCULTURE HARVESTD FROM PHYCOREMEDIATION OF PIGGERY WASTEWATER DIGESTATE


DOCUMENTO - ARTIGO CIENTÍFICO  


AUTORES - WILLIAM MICHELON, MARCIO LUIS BUSI DA SILVA, MELISSA PAOLA MEZZARI, MATEUS PIROLLI, JEAN MICHEL PRANDINI, HUGO MOREIRA SOARES


RESUMO/ABSTRACT

The effects of nitrogen (N) and/or phosphorus (P) starvation on the biochemical composition of native microalgae Chlorella spp. polyculture obtained from the phycoremediation of swine wastewaters were investigated. Microalgae-specific growth rate of 1.2 day−1 was achieved (30.3 mg L−1 day−1). PO4−2 and NH3 were completely removed from swine digestate effluent after 3 and 11 days, respectively. Microalgae harvested immediately after nutrient removal showed high protein (56–59 %) and carbohydrate (25–34 %) but low lipid (1.8–3 %) contents. Depletion of N or P alone stimulated carbohydrate production at the expenses of proteins. Significant lipid accumulation from 3 % ± 0.5 to 16.3 % ± 0.8 was reached only after 25 days following N and P starvation as demonstrated by Nile red-stained cells. Regarding to the effects of harvesting methods on cellular biochemical composition, circumstantial evidences indicate that coagulation–flocculation with tannin may lead to lower protein and lipid amounts but increased carbohydrate content (p < 0.01) as compared to centrifugation.

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  • EFFECTS OF NITROGEN AND PHOSPHORUS ON BIOCHEMICAL COMPOSITION OF MICROALGAE POLYCULTURE HARVESTD FROM PHYCOREMEDIATION OF PIGGERY WASTEWATER DIGESTATE

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EFFECTS OF NITROGEN AND PHOSPHORUS ON BIOCHEMICAL COMPOSITION OF MICROALGAE POLYCULTURE HARVESTD

  • 3 horas de carga horária
  • 1 aula
  • 1 módulo de conteúdo
  • Última atualização 29/06/2023
  • 1 arquivo para download

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