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Evento

Decolorization of Reactive Black 5 by suspended growing yeasts and ca-alginate beads immobilized yeasts

Rosales Soro, Maria del MilagroIcon ; Bulacio Gil, Natalia MaríaIcon ; Nieto Peñalver, Carlos GabrielIcon ; Castellanos, Lucia InesIcon ; Pajot, Hipolito FernandoIcon
Tipo del evento: Congreso
Nombre del evento: International Specialized Symposium on Yeasts 34
Fecha del evento: 10/2018
Institución Organizadora: Universidad Nacional del Comahue; Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales; Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Agencia de Promoción Científica y Tecnológica;
Título del Libro: Book of abstacts: International Specialized Symposium on Yeasts ISSY 34
Editorial: Universidad Nacional del Comahue
Idioma: Inglés
Clasificación temática:
Otras Ciencias Biológicas

Resumen

An eco-friendly treatment of industrial dyes and effluents is the biggest environmental challenge for textile industries. Numerous bio-decolorization processes have been studied, but their industrial application is still marginal due to practical and economic obstacles. In this survey, we analyzed the immobilization of T. Akiyoshidainum HP-2023 in Ca-alginate beads to improve its practical effectiveness. The effects of different parameters on the decolorization of Reactive Black 5 by immobilized cells of T. akiyoshidainum HP-2023 were investigated under aerobic conditions. The analyzed factors included alginate concentration (1, 2 and 2.75%), initial dye concentration (200, 400, 600 and 800 mg/L) and rotation speed (150, 200 and 250 r/min). Under optimal conditions, (2% sodium alginate, 200mg/l, and 200 r/min), the immobilized yeast caused to 95% decolorization in 6 h, while free, suspended cells, achieved only 50% decolorization in the same period. In addition, immobilized yeast decolorizes a wider range of initial dyes. Immobilized cells could completely decolorize 600mg/l of Reactive Black 5 within 24 h, and caused 75% decolorization of 800 mg/L of the dye in 24 h. Furthermore, results of successive cycles of decolorization showed that insolubilized beads were reusable for at least four repeated cycles keeping a high efficiency in color removal. Results of decolorization tests suggested that Ca-alginate immobilized yeast may effectively be used for decolorization of dyes present in industrial effluents.
Palabras clave: BIO-DECOLORIZATION PROCESSES , IMMOBILIZATION , T. AKIYOSHIDAINUM HP-2023 , CA-ALGINATE BEADS
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/187652
URL: https://www.barilocheeventos.com/34o-international-specialized-symposium-on-yeas
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Eventos(PROIMI)
Eventos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Citación
Decolorization of Reactive Black 5 by suspended growing yeasts and ca-alginate beads immobilized yeasts; International Specialized Symposium on Yeasts 34; San Carlos de Bariloche; Argentina; 2018; 1-7
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