Ceramic-supported graphene oxide membrane bioreactor for the anaerobic decolorization of azo dyes

Amin, Mohammad Shaiful Alam; Giralt, Jaume; Fortuny, A.; Font, Josep

doi:10.1016/j.jwpe.2021.102499

Cited by 11 publications

(12 citation statements)

References 71 publications

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“…The surface and cross-sectional views of the carbon-based membranes were studied using FESEM, which shows crucial morphological features for their application in the anaerobic decolorization process. As illustrated in Figure 4a,b, the top view of these carbon membranes clearly exhibits a defect-free smooth and porous carbon layer that was quite similar to previous studies [21,26]. The pore size of the resulting carbon membrane differed between the two alternatives.…”

Section: Structural and Chemical Characterization Of Ceramic-supported Carbon Membranessupporting

confidence: 81%

“…Overall, it means that the carbon layer derived from the carbonization of the Matrimid and graphene oxide has no adverse effect on bacterial growth for the successive formation of active biofilm [51][52][53]. As with the results obtained from the earlier ceramic-supported carbon-based membrane bioreactor experiments [21,26], these membranes perform triple roles in anaerobic dye decolorization. The carbon membrane served as biofilm support, redox mediator, and pollutant immobilizer that also retain the degradation products.…”

Section: Role Of the Membrane Precursors On Anaerobic Decolorization Of Dye Moleculesmentioning

confidence: 88%

“…282863, Madrid, Spain) [27]. The porous graphene oxide layer was deposited over the ceramic support by vacuum-assisted filtration of 3-5 mL of 1 mg•mL −1 graphene oxide solution using the filtration cell [26]. The desired thickness of the uniform GO layer was formed within 15 min of vacuum filtration.…”

Section: Fabrication Of Ceramic-supported Carbon Membranementioning

confidence: 99%

“…Our recent work demonstrated the selection of the most appropriate precursor is critical to achieving a porous, permeable carbon-based membrane [21,26]. In CSGOM, this is essential because the carbon layer thickness on the membrane surface increases as the GO concentration increases, resulting in a decrease in membrane flux [47].…”

Section: Impact Of the Carbonaceous Layer On Flux And Resistancementioning

confidence: 99%

“…A nanostructured carbon membrane for wastewater treatment shows thermally and electrically conductive properties synthesized by graphitic oxide and carbon nanotubes [24,25]. In our previous work, we synthesized two types of ceramic-supported carbon membranes [21,26]. One of the membranes was fabricated by the carbonization of Matrimid 5218 and another one by the vacuum filtration of exfoliated graphene oxide solution.…”

Section: Introductionmentioning

confidence: 99%

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Compact Carbon-Based Membrane Reactors for the Intensified Anaerobic Decolorization of Dye Effluents

et al. 2022

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Carbon-based membranes integrated with anaerobic biodegradation are presented as a unique wastewater treatment approach to deal with dye effluents. This study explores the scope of ceramic-supported carbon membrane bioreactors (B-CSCM) and ceramic-supported graphene oxide membrane bioreactors (B-CSGOM) to decolorize azo dye mixtures (ADM) and other dyes. The mixture was prepared using an equimolar composition of monoazo Acid Orange 7, diazo Reactive Black 5, and triazo Direct Blue 71 dye aqueous solution. Afterwards, as in the ADM experiment, both compact units were investigated for their ability in the biodecolorization of Methylene Blue (MB) and Rhodamine B (RhB) dye solutions, which do not belong to the azo family. The obtained outcomes revealed that the conductive surface of the graphene oxide (GO) membrane resulted in a more efficient and higher color removal of all dye solutions than B-CSCM under a wide feed concentration and permeate flux ranges. The maximum color removal at low feed concentration (50 mg·L−1) and permeate flux (0.05 L·m−2·h−1) was 96% for ADM, 98% for MB and 94% for RhB, whereas it was 89%, 94% and 66%, respectively, for B-CSCM. This suggests that the robust, cost-effective, efficient nanostructures of B-CSGOM can successfully remove diverse azo dye solutions from wastewater better than the B-CSCM does.

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Section: Structural and Chemical Characterization Of Ceramic-supported Carbon Membranessupporting

confidence: 81%

Section: Role Of the Membrane Precursors On Anaerobic Decolorization Of Dye Moleculesmentioning

confidence: 88%

Section: Fabrication Of Ceramic-supported Carbon Membranementioning

confidence: 99%

Section: Impact Of the Carbonaceous Layer On Flux And Resistancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compact Carbon-Based Membrane Reactors for the Intensified Anaerobic Decolorization of Dye Effluents

et al. 2022

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Sustainable environment through using porous materials: A review on wastewater treatment

Al‐Jubouri

Al‐Batty

Al‐Hamd

et al. 2023

Asia-Pacific J Chem Eng

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Porous materials play an important role in creating a sustainable environment by improving wastewater treatment's efficacy. Porous materials, including adsorbents or ion exchangers, catalysts, metal–organic frameworks, composites, carbon materials, and membranes, have widespread applications in treating wastewater and air pollution. This review examines recent developments in porous materials, focusing on their effectiveness for different wastewater pollutants. Specifically, they can treat a wide range of water contaminants, and many remove over 95% of targeted contaminants. Recent advancements include a wider range of adsorption options, heterogeneous catalysis, a new UV/H2O2 procedure, ion exchange, Fenton oxidation, membrane activities, ozonation, membrane bioreactor, electrochemical treatment, wet air oxidation, and a carbon capture methodology utilizing various porous materials. A particular focus for innovative research is on developing technologies to synthesize porous materials and assess their performance in removing various pollutants from wastewater at varying experimental conditions. Porous materials can be essential in designing wastewater treatment systems to address the critical environmental issues of water stress and safe drinking water worldwide.

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Preparation of 1,8-dichloroanthraquinone/graphene oxide/poly (vinylidene fluoride) (1,8-AQ/GO/PVDF) mediator membrane and its application to catalyzing biodegradation of azo dyes

Ye,

Wu,

et al. 2023

Ecotoxicology and Environmental Safety

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Ceramic-supported graphene oxide membrane bioreactor for the anaerobic decolorization of azo dyes

Cited by 11 publications

References 71 publications

Compact Carbon-Based Membrane Reactors for the Intensified Anaerobic Decolorization of Dye Effluents

Compact Carbon-Based Membrane Reactors for the Intensified Anaerobic Decolorization of Dye Effluents

Sustainable environment through using porous materials: A review on wastewater treatment

Preparation of 1,8-dichloroanthraquinone/graphene oxide/poly (vinylidene fluoride) (1,8-AQ/GO/PVDF) mediator membrane and its application to catalyzing biodegradation of azo dyes

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