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|Title:||Tratamento biologico de efluentes : parametros otimos na utilização de um bioreator de leito recheado modificado|
|Advisor:||Mei, Lúcia Helena Innocentini, 1953-|
|Abstract:||Resumo: O tratamento biológico de efluentes é um processo promissor para a redução do impacto ambiental ocasionado pela liberação dos efluentes|
Abstract: Biological treatment of effluent is a promissing process for reduction of the environmental impact due to the effluent discharge from the pulp and paper industry. Two fungal strais, Lentinula (=Lentinus) edodes UEC-209 and UEC-2021, previously selected for this purpose were studied. The principal aim of this study was to determine the optimal conditions for the effluent treatment from pulp and paper industry with the selected fungi in a modified air-lift-packed bed reactor. The condictions for the lignin peroxidase (LiP) and for manganese peroxidase (MnP) production, L. edodes free and immobiljzed system at Erlenmeyer and bioreactor scale with different nature of organochloride compounds were studied. The oxygen transfer coefficient ('K IND. L¿a) in free and immobilized system at the flow rate of 400, 600, and 800 mL/min of oxygen, which is an essential information of aerobic treatment was also studied. The results showed that the best conditions for the enzymatic production were 1.25% of malt extract, without any extra nitrogen source and in free micelial growth. L. edodes UEC-2021 appeared as the most efficient fungus for effluent decontamination of different nature, reaching 100% of acute toxicity reduction. The kLamore adequate in the bioreactor studied was the free system (0.18 min-I). In this condition a 63% of phenoI reduction, 32% of chIorolignin degradation and 37.5% of AOX removal after 3 days of treatment were obtained ...Note: The complete abstract is available with the full electronic digital thesis or dissertations
Industria de celulose
|Appears in Collections:||FEQ - Dissertação e Tese|
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