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      Evaluación de la capacidad de adsorción del trametes villosa residual del proceso remoción del colorante triactive navy pn2r Translated title: Evaluation of the adsorption capacity of the fungi trametes villosa residual from the removal process of the dye triactive navy pn2r

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          Abstract

          La biomasa fúngica empleada para la decoloración por degradación enzimática, una vez inactivada, se convierte en un residuo que puede ser reutilizado como biosorbente en los procesos de remoción de colorantes. Las paredes celulares fúngicas contienen gran cantidad de polisacáridos y proteínas. Estos biopolímeros ofrecen grupos funcionales como carboxilos, hidroxilos, sulfatos, fosfatos y grupos amino, los cuales pueden unirse a otros iones. El presente trabajo tiene por objetivo evaluar la capacidad de adsorción de la biomasa fúngica residual en el proceso de la remoción del colorante Triactive Navy PN2R de disoluciones acuosas. La biomasa fúngica se obtuvo como residuo a partir del empleo de hongos Trametes villosa en un estudio de remoción de colorante de aguas simuladas a nivel de laboratorio. El colorante empleado para preparar las muestras fue Triactive Navy PN2R, ampliamente empleado en la industria textil. Se logró remover la quinta parte de la coloración inicial de la solución. No se encontró diferencia estadísticamente significativa en la remoción al variar la concentración inicial del colorante. Con los datos de la adsorción aparente del colorante por la biomasa y concentraciones de equilibrio, se ajustó el modelo de la isoterma de Freundlich, adecuada para explicar el caso estudiado, obteniéndose el valor "n" de 0,9904. Se determinó experimentalmente que la capacidad de adsorción de la biomasa fúngica inactiva en las condiciones de trabajo es 3,26 mg de color/g de biomasa. Se corroboró la posibilidad de reuso de la biomasa residual del proceso de tratamiento de residuales líquidos de la industria textil.

          Translated abstract

          The fungal biomass used for bleaching by enzymatic degradation, once inactivated, becomes a residue that can be reused as biosorbent in the processes of removal of dyes. Fungal cell walls contain a large amount of polysaccharides and proteins. These biopolymers offer functional groups such as carboxyl, hydroxyl, sulphate, phosphate and amino groups, which can join other ions. The present work has the objective to evaluate the adsorption capacity of the residual fungal biomass in the process of the removal of the dye Triactive Navy PN2R of aqueous solution. The fungal biomass was obtained as a residue from the use of fungi Trametes villosa in a study of removal of simulated water dye at the laboratory level. The dye used to prepare the samples was the Triactive Navy PN2R, widely employed in the textile industry. It was removed the fifth part of the initial coloring of the solution. No statistically significant difference was found in the removal to vary the initial concentration of the dye. With the data of the apparent adsorption of the biomass and concentrations of equilibrium, it was adjusted the model of Freundlich isotherm, adequate to explain the case studied, obtaining the "n" value of 0,9904. It was determined experimentally that the capacity of biosorption fungal biomass inactive in the conditions of work is 3,26 mg of color/g of biomass. It was corroborated the possibility of giving a reuse to the residual biomass of the treatment process of liquid residuals of the textile industry.

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          Physiological regulation of laccase and manganese peroxidase production by white-rot Basidiomycetes.

          This review integrates recent literature and our own data on the physiology of laccase and manganese peroxidase synthesis, focusing on the common characteristics and unique properties of individual fungi as well as on several approaches providing enhanced enzyme secretion. Firstly, the enzyme yield is species-dependent and strain-dependent and selection of new organisms with tremendous synthesis of these enzymes is possible. For example, in screening program the laccase activity of tested basidiomycetes varied from 0.5Uml(-1) to 75Uml(-1). Secondly, the carbon source and lignocellulosic substrate play a crucial role in enzyme production. Thus, laccase activity of Pseudotrametes gibbosa varied from 0.3Uml(-1) (Avicel) to 13.7Uml(-1) (lactose), while the substitution of wheat bran with walnut pericarp increased Cerrena unicolor manganese peroxidase yield from 0.7Uml(-1) to 8.3Uml(-1). Thirdly, aromatic compounds regulate the ligninolytic enzyme synthesis although their effect is very specific depending on fungi physiological peculiarities. 2,4,6-trinitrotoluene (TNT) supplemented to the medium at appropriate concentration significantly accelerated C. unicolor laccase production and 4-fold increased laccase specific activity. Fourthly, co-cultivation of appropriate fungi shows considerable promise as a strategy to highly enhance the enzyme production. For example, pairing of C. unicolor and Phellinus robustus 2-fold increased the total laccase yield.
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            Decolouration of azo dyes by Phanerochaete chrysosporium immobilised into alginate beads

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              Enzymology and molecular genetics of wood degradation by white-rot fungi

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                Author and article information

                Journal
                caz
                Centro Azúcar
                cen. az.
                Editorial Feijóo (Santa Clara, , Cuba )
                0253-5777
                2223-4861
                September 2016
                : 43
                : 3
                : 1-9
                Affiliations
                [01] Villa Clara orgnameUniversidad Central Marta Abreu de las Villas orgdiv1Facultad de Química y Farmacia orgdiv2Departamento de Ingeniería Química Cuba
                Article
                S2223-48612016000300001 S2223-4861(16)04300300001
                3bc150d5-224e-4b24-85a7-db87d2b9f260

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 04 February 2016
                : 15 February 2016
                : 14 March 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 16, Pages: 9
                Product

                SciELO Cuba

                Categories
                ARTÍCULO

                biosorción,colorantes textiles,The fungi Trametes villosa,Biosorption,textile dyes,Trametes villosa

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