Nitrogen-Doped Graphene Iron-Based Particle Electrode Outperforms Activated Carbon in Three-Dimensional Electrochemical Water Treatment Systems

Ghanbarlou, Hosna; Pedersen, Nikoline Loklindt; Simonsen, Morten Enggrob; Muff, Jens

doi:10.3390/w12113121

Cited by 6 publications

(3 citation statements)

References 49 publications

(81 reference statements)

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“…Although this process reduced the overall volume and sludge, it is quite expensive due to the high operating cost associated with the generation of ozone [21]. Electrochemical oxidation [22] and Fenton peroxidation [23] are the most used advanced oxidation processes, all of them efficiently able to decrease COD, color, and toxicity [24]. However, excess sludge formation later requires its disposal or secondary treatment.…”

Section: Introductionmentioning

confidence: 99%

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

Amin

Giralt

Fortuny

et al. 2021

Water

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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·L−1 feed solution and 0.05 L·m−2·h−1 of permeate flux, was 98%, 82%, and 72%, respectively, for AO7, RB5, and DB71. By increasing these parameters to 100 mg·L−1 and 0.1 L·m−2·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.

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Section: Introductionmentioning

confidence: 99%

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

Amin

Giralt

Fortuny

et al. 2021

Water

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“…However, there were no significant differences between the other systems. The results for the tested activated carbon may be explained by the possibility that polarized activated carbon increases the total active electrode surface when exposed to an electric field [60,61].…”

Section: Discussionmentioning

confidence: 97%

Three-dimensional Electrocoagulation Process Optimization Employing Response Surface Methodology that Operated at Batch Recirculation Mode for Treatment Refinery Wastewaters

Theydan,

Mohammed,

Haque

2024

IJCPE

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The performance of a three-dimensional electrocoagulation process operated at a batch recirculation mode for treating petroleum refinery wastewater using aluminium as a sacrificial anode, stainless steel as a cathode, and granular activated carbon with metal impregnated carbon (GACMI (Al: Fe)) with mass ratio (2:1) as a third particle electrode was investigated. Effects of operating factors such as the applied voltage (15-30 v), flow rate (50-175 mL/min), pH (4-10), and GACMI dosage (5-10) g/L on the chemical oxygen demand removal were investigated. Using Box-Behnken design (BBD), a mathematical model relating the essential operational parameters to chemical oxygen demand (COD) reduction was constructed. Results showed that the effect of GACMI dosage on the efficiency of COD removal was the major one, where COD removal increased as GACMI dosage increased. However, increasing applied voltage would enhance the performance of the electrocoagulation reaction. Experimental chemical oxygen demand removal of 96.25 % was attained at the optimized conditions (applied voltage=27.7 v, flow rate=128 mL/min, pH=5.6, GACMI dosage= 8.7 g/L). BET-specific surface area, total pore volume, X-ray fluorescence (XRF), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) were employed for the characterization of GACMI particle electrodes.

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“…The institutions that frequently appeared in scientific publications related to the research area are presented in the network map and table (refer to Figure 3 and Table S3). Based on the node size, it can be observed that the most productive institutions were from the People's Republic of China, with the Chinese Academy of Sciences having the highest publication count (22) followed by Tianjin University (publication count 19). Additionally, the Chinese Academy of Sciences (centrality 0.12), the Egyptian Knowledge Bank (EKB) (centrality 0.09), and Zhejiang University (centrality 0.05) It is interesting to note that Great Britain and France showed significant cooperation in the investigated field, although their productivity was not at the top (production 7 and 7, centrality 0.21 and 0.09, respectively, see Table S1).…”

Section: The Contributions Of Institutionsmentioning

confidence: 99%

Bibliometric Analysis of Nanostructured Anodes for Electro-Oxidative Wastewater Treatment

Brdarić,

Aćimović,

Savić Rosić

et al. 2024

Sustainability

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Last decade, a growing emphasis on developing sustainable and environmentally friendly technologies for electro-oxidative wastewater treatment has catalyzed innovation and spurred research efforts worldwide. Researchers may explore the use of renewable energy sources to drive electrochemical processes, as well as the development of eco-friendly electrode materials for wastewater treatments. The integration of nanostructured anodes into the electrolytic system for wastewater treatment has led to significant advancements in the removal of pollutants via electro-oxidation. Despite the great number of research articles related to the development and use of nanostructured anodes for electro-oxidative wastewater treatment, to our knowledge, no bibliometric analysis has been published in this domain. Therefore, this work presents a bibliometric study of publications on the designated theme, retrieved from the Web of Science Core Collection database, which were published over the last decade. The visual and network analysis of co-authorship among authors, organizations, countries, co-citation of authors, citation of documents and sources, as well as the co-occurrence of author keywords was performed using two compatible pieces of scientometric software, namely VOSviewer (version 1.6.18) and CiteSpace (version 6.2.R4). From 2013 to 2023, there has been a gradual increase in the number of publications regarding the development and use of nanostructured anodes for electro-oxidative wastewater treatment. It suggests a steady advancement in this field. The People’s Republic of China emerges as the most productive country, and it is a leader in international collaborations. Also, the United States of America, South Korea, and European Union countries have significant impacts on the research in this domain. The development and application of nanostructured materials for urea electro-oxidation is a main and prospective research theme. This bibliometric analysis allowed for the visualization of the present landscape and upcoming trends in this research field, thereby facilitating future collaborative research endeavors and knowledge exchange.

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Nitrogen-Doped Graphene Iron-Based Particle Electrode Outperforms Activated Carbon in Three-Dimensional Electrochemical Water Treatment Systems

Cited by 6 publications

References 49 publications

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

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

Three-dimensional Electrocoagulation Process Optimization Employing Response Surface Methodology that Operated at Batch Recirculation Mode for Treatment Refinery Wastewaters

Bibliometric Analysis of Nanostructured Anodes for Electro-Oxidative Wastewater Treatment

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