Produção Nacional
Revisado por pares
Vinasse degradation using Pleurotus sajor-caju in a combined biological – Electrochemical oxidation treatment
2017; Elsevier BV; Volume: 192; Linguagem: Inglês
10.1016/j.seppur.2017.10.017
ISSN1873-3794
AutoresDébora da Silva Vilar, Giovana O. Carvalho, Marilia M. S. Pupo, Mario Aguiar, Nádia Hortense Torres, Juliana Heloisa Pinê Américo‐Pinheiro, Eliane Bezerra Cavalcanti, Katlin I.B. Eguiluz, Giancarlo R. Salazar‐Banda, Manuela Souza Leite, Luiz Fernando Romanholo Ferreira,
Tópico(s)Advanced oxidation water treatment
ResumoIndustrial wastewater treatment, by combined processes, has recently been seen as a novel and economically attractive strategy. The use of Pleurotus sajor-caju, followed by electrochemical oxidation (EO) for sugarcane vinasse degradation was investigated. Vinasse degradation treatment with P. sajor-caju yielded efficient color removal (97%), turbidity (99%), chemical oxygen demand (COD) (50.6%), and total organic carbon (TOC) (57.3%). Ligninolytic enzyme production was seen, and the highest laccase activity were obtained after 12th day of fermentation (varying between 341–400 UI L–1) and for peroxidase manganese the highest activity was seen between the 9th and 12th day of fermentation (varying between 1400–1494 UI L–1). Concomitantly, the mycelial biomass presented a high concentration (13.63 g L–1) on the 15th day of growth. In optimized conditions, the EO using as anode Ti/(RuO2)0.7(IrO2)0.1(Sb2O3)0.2 further degraded vinasse, reaching a final color removal of 100%, COD of 66% and TOC of 61%. This additional procedure allowed the elimination of vinasse toxicity reaching 0% lethality for Lactuca sativa and Raphidocelis subcapitata.
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