Articles producció científica> Enginyeria Química

Comparative Anaerobic Decolorization of Azo Dyes by Carbon-Based Membrane Bioreactor

  • Dades identificatives

    Identificador: imarina:9207248
    Autors:
    Alam Amin, Mohammad ShaifulStuber, FrankGiralt, JaumeFortuny, AgustinFabregat, AzaelFont, Jose
    Resum:
    This study used a novel integrated technology of ceramic supported carbon membrane (CSCM) to degrade azo dyes through an anaerobic mixed culture. The CSCM worked simultaneously as biofilm support, redox mediator, and nano-filter to enhance the dye decolorization efficiency. The decolorization of Acid Orange 7 (AO7) was initially investigated with and without microorganisms in both ceramic support (CS) and CSCM reactors. The CSCM bioreactor (B-CSCM), operated with microorganisms, gave a maximum decolorization of 98% using a CSCM evolved from 10% weight (wt.) of Matrimid 5218 solution. To know the influence of permeate flow, feed concentration, and dye structure on the decolorization process, different B-CSCMs for dye removal experiments were studied over monoazo AO7, diazo Reactive Black 5 (RB5), and triazo Direct Blue 71 (DB71). The highest color removal, operated with 50 mg center dot L-1 feed solution and 0.05 L center dot m(-2)center dot h(-1) of permeate flux, was 98%, 82%, and 72%, respectively, for AO7, RB5, and DB71. By increasing these parameters to 100 mg center dot L-1 and 0.1 L center dot m(-2)center dot h(-1), the decolorization rate of dye solution still achieved 37% for AO7, 30% for RB5, and 26% for DB71. In addition, the system was run for weeks without apparent loss of activity. These findings make evident that the combined phenomena taking place in CSCM bioreactor result in an efficient, cost-effective, and ecofriendly azo dye decolorization method.
  • Altres:

    Autor segons l'article: Alam Amin, Mohammad Shaiful; Stuber, Frank; Giralt, Jaume; Fortuny, Agustin; Fabregat, Azael; Font, Jose;
    Departament: Enginyeria Química
    Autor/s de la URV: Amin, Mohammad Shaiful Alam / Fabregat Llangostera, Azael / Font Capafons, José / Fortuny Sanromà, Agustín / Giralt Marcé, Jaume / Stüber, Frank Erich
    Paraules clau: Toxicity Textile waste-water Separation performance Removal Reactive black 5 Plant effluent Photocatalytic degradation Operational parameters Decolorization Carbon-based membrane Biodegradation Azo dye Anaerobic biodegradation Acid orange 7
    Resum: This study used a novel integrated technology of ceramic supported carbon membrane (CSCM) to degrade azo dyes through an anaerobic mixed culture. The CSCM worked simultaneously as biofilm support, redox mediator, and nano-filter to enhance the dye decolorization efficiency. The decolorization of Acid Orange 7 (AO7) was initially investigated with and without microorganisms in both ceramic support (CS) and CSCM reactors. The CSCM bioreactor (B-CSCM), operated with microorganisms, gave a maximum decolorization of 98% using a CSCM evolved from 10% weight (wt.) of Matrimid 5218 solution. To know the influence of permeate flow, feed concentration, and dye structure on the decolorization process, different B-CSCMs for dye removal experiments were studied over monoazo AO7, diazo Reactive Black 5 (RB5), and triazo Direct Blue 71 (DB71). The highest color removal, operated with 50 mg center dot L-1 feed solution and 0.05 L center dot m(-2)center dot h(-1) of permeate flux, was 98%, 82%, and 72%, respectively, for AO7, RB5, and DB71. By increasing these parameters to 100 mg center dot L-1 and 0.1 L center dot m(-2)center dot h(-1), the decolorization rate of dye solution still achieved 37% for AO7, 30% for RB5, and 26% for DB71. In addition, the system was run for weeks without apparent loss of activity. These findings make evident that the combined phenomena taking place in CSCM bioreactor result in an efficient, cost-effective, and ecofriendly azo dye decolorization method.
    Àrees temàtiques: Water science and technology Water resources Interdisciplinar Geography, planning and development Geografía Geociências Fluid flow and transfer processes Environmental sciences Engenharias iii Engenharias i Ciencias sociales Ciências ambientais Ciências agrárias i Biochemistry Aquatic science
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: jaume.giralt@urv.cat agustin.fortuny@urv.cat mohammadshaifulalam.amin@estudiants.urv.cat frankerich.stuber@urv.cat afabrega@urv.cat jose.font@urv.cat
    Identificador de l'autor: 0000-0001-5917-8741 0000-0001-6966-9229 0000-0001-9424-1400 0000-0002-5525-5401 0000-0002-4007-7905
    Data d'alta del registre: 2024-07-27
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/2073-4441/13/8/1060
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Water. 13 (8):
    Referència de l'ítem segons les normes APA: Alam Amin, Mohammad Shaiful; Stuber, Frank; Giralt, Jaume; Fortuny, Agustin; Fabregat, Azael; Font, Jose; (2021). Comparative Anaerobic Decolorization of Azo Dyes by Carbon-Based Membrane Bioreactor. Water, 13(8), -. DOI: 10.3390/w13081060
    DOI de l'article: 10.3390/w13081060
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2021
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Aquatic Science,Biochemistry,Environmental Sciences,Fluid Flow and Transfer Processes,Geography, Planning and Development,Water Resources,Water Science and Technology
    Toxicity
    Textile waste-water
    Separation performance
    Removal
    Reactive black 5
    Plant effluent
    Photocatalytic degradation
    Operational parameters
    Decolorization
    Carbon-based membrane
    Biodegradation
    Azo dye
    Anaerobic biodegradation
    Acid orange 7
    Water science and technology
    Water resources
    Interdisciplinar
    Geography, planning and development
    Geografía
    Geociências
    Fluid flow and transfer processes
    Environmental sciences
    Engenharias iii
    Engenharias i
    Ciencias sociales
    Ciências ambientais
    Ciências agrárias i
    Biochemistry
    Aquatic science
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