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: Font Capafons, José / Fortuny Sanromà, Agustín / Giralt Marcé, Jaume / Stüber, Frank Erich
Keywords: Waste-water Tubular membrane Color removal Azo dyes Anaerobic process tubular membrane design color removal biodegradation azo dyes
Abstract: This research investigates a highly efficient compact tubular ceramic-supported carbon-based membrane reactor integrated with anaerobic biodegradation to decolorize the azo dyes. Two carbon-based membranes, produced using Matrimid 5218 polyimide and graphene oxide solutions, are evaluated for the comparative color removal of three structurally different azo dyes, Acid Orange 7 (AO7), Reactive Black 5 (RB5), and Direct Blue 71 (DB71). Based on FESEM microscopic images, the average pore size of the tubular ceramic-supported carbonized membrane (TCSCM) was approximately 25 nm, while for the tubular ceramic-supported graphene oxide membrane (TCSGOM), it was 12 nm. Additionally, TCSCM had a thinner layer at only 1.10 µm, while TCSGOM was slightly thicker at 2.11 µm. These features influenced the permeate flux of the membrane, in which the TCSGOM exhibited lower permeate flux (18.2 L·m−2·h−1) than the TCSCM (45.6 L·m−2·h−1). However, the anaerobic decolorization results indicated that the TCSGOM bioreactor (B-TCSGOM) was more efficient and effective at removing color from all dye solutions than the TCSCM bioreactor (B-TCSCM) over a wide range of feed concentrations. In both reactors, the highest decolorization was achieved at low feed concentration (50 mg·L−1), and removal was 94 % for AO7, 90 % for RB5, and 88 % for DB71 in B-TCSGOM, whereas 88 %, 85 %, and 69 %, respectively, in B-TCSCM. These suggest that the robust conductive nanoporous surface of B-TCSGOM makes it more effective at removing different azo dye solutions from wastewater.
Thematic Areas: Waste management and disposal Química Process chemistry and technology Pollution Materiais Matemática / probabilidade e estatística Interdisciplinar Farmacia Engineering, environmental Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemical engineering (miscellaneous) Biotecnología Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: jaume.giralt@urv.cat agustin.fortuny@urv.cat frankerich.stuber@urv.cat jose.font@urv.cat
Author identifier: 0000-0001-5917-8741 0000-0001-9424-1400 0000-0002-4007-7905
Record's date: 2024-08-03
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.sciencedirect.com/science/article/pii/S2213343723013726
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Journal Of Environmental Chemical Engineering. 11 (5):
APA: Amin, MSA; Stüber, F; Giralt, J; Fortuny, A; Fabregat, A; Font, J (2023). Compact tubular carbon-based membrane bioreactors for the anaerobic decolorization of azo dyes. Journal Of Environmental Chemical Engineering, 11(5), -. DOI: 10.1016/j.jece.2023.110633
Article's DOI: 10.1016/j.jece.2023.110633
Entity: Universitat Rovira i Virgili
Journal publication year: 2023
Publication Type: Journal Publications