Author, as appears in the article.: Alam Amin, Mohammad Shaiful; Stuber, Frank; Giralt, Jaume; Fortuny, Agustin; Fabregat, Azael; Font, Jose;
Department: Enginyeria Química
URV's Author/s: Amin, Mohammad Shaiful Alam / Fabregat Llangostera, Azael / Font Capafons, José / Fortuny Sanromà, Agustín / Giralt Marcé, Jaume / Stüber, Frank Erich
Keywords: 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
Abstract: 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.
Thematic Areas: 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
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: jaume.giralt@urv.cat agustin.fortuny@urv.cat mohammadshaifulalam.amin@estudiants.urv.cat frankerich.stuber@urv.cat afabrega@urv.cat jose.font@urv.cat
Author identifier: 0000-0001-5917-8741 0000-0001-6966-9229 0000-0001-9424-1400 0000-0002-5525-5401 0000-0002-4007-7905
Record's date: 2024-07-27
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.mdpi.com/2073-4441/13/8/1060
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Water. 13 (8):
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
Article's DOI: 10.3390/w13081060
Entity: Universitat Rovira i Virgili
Journal publication year: 2021
Publication Type: Journal Publications