Author, as appears in the article.: Amin MSA; Stüber F; Giralt J; Fortuny A; Fabregat A; Font J
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: Textile dye Membrane Graphene oxide Azo dye Anaerobic decolorization triazo dyes strain reduction performance nanosheets monoazo membrane facile degradation biodegradation azo dye anaerobic decolorization
Abstract: A continuous compact membrane bioreactor consisted of ceramic-supported graphene oxide membrane (CSGoM) was implemented for the first time for anaerobic biodecolorization of monoazo Acid Orange 7 (AO7), diazo Reactive Black 5 (RB5), and triazo Direct Blue 71 (DB71) solutions, showing excellent decolorization potential. The membrane was prepared by vacuum filtration of various graphene oxide solutions using a UF ceramic flat element. The decolorization efficiency of the CSGoM bioreactor, made from 1 mg·mL?1 of GO solution (B-CSGoM-1), was investigated for several structurally distinct azo dyes, initial feed concentrations, and permeate fluxes. Maximum color removal was achieved under low feed concentration (50 mg·L?1) and permeate flux (0.05 L·m?2·h?1), reaching 99% for AO7, 96% RB5, and 92% for DB71. At this low permeate flux, the biodecolorization was stable for all azo dye solutions irrespective of the feed concentration. In a subsequent experiment under higher feed concentration and permeate flux (100 mg·L?1 and 0.10 L·m?2·h?1), the decolorization slightly fell to 93%, 85%, and 81% for monoazo, diazo, and triazo solutions, respectively. The existence of anaerobic bacteria (Geobacter and Pseudomonas guangdongensis) in the B-CSGoM-1 biofilm confirms that they could perform efficient biodegradation of azo dye molecules in association with the graphene oxide membrane. © 2021 The Authors
Thematic Areas: Water science and technology Water resources Waste management and disposal Safety, risk, reliability and quality Química Process chemistry and technology Materiais Farmacia Engineering, environmental Engineering, chemical Engenharias iii Engenharias ii Engenharias i Ciências ambientais Ciências agrárias i Ciência de alimentos Biotechnology Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: agustin.fortuny@urv.cat mohammadshaifulalam.amin@estudiants.urv.cat frankerich.stuber@urv.cat afabrega@urv.cat jose.font@urv.cat
Author identifier: 0000-0001-6966-9229 0000-0001-9424-1400 0000-0002-5525-5401 0000-0002-4007-7905
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Journal Of Water Process Engineering. 45
APA: Amin MSA; Stüber F; Giralt J; Fortuny A; Fabregat A; Font J (2022). Ceramic-supported graphene oxide membrane bioreactor for the anaerobic decolorization of azo dyes. Journal Of Water Process Engineering, 45(), -. DOI: 10.1016/j.jwpe.2021.102499
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV