Modeling and Experimental Study of Electrochemical Oxidation of Organics on Boron-Doped Diamond Anode

Xu, Sikun George

doi:10.12943/cnr.2016.00018

Cited by 4 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Second, the application of the BDD anodes in the electrooxidation of contaminants includes several other accountable factors such as the degradation conditions used in the experiments (current density, type of EAOP, pH and type of electrolyte, active electrode area, volume of solution, type and concentration of the pollutant, electrochemical cell design, or fluid dynamics), and the water system itself (spiked water or real wastewater) (Sires et al, 2014;Cano et al, 2016;Xu, 2016;Ma et al, 2018).…”

Section: Bdd Electrodes From Different Sourcesmentioning

confidence: 99%

“…The mineralization efficiency is influenced by the applied current density, EAOP, pollutant concentration, properties of the degraded pollutant, pH of the solution, supporting electrolyte, temperature, the volume of solution, fluid dynamics, dissolved oxygen, electrode configuration, active electrode area, cell design, and agents added in the solution, e.g., chloride, sulfate, phosphate, carbonate, and oxygen (Brillas et al, 2005;Enache et al, 2009;Panizza and Cerisola, 2009;Macpherson, 2015;Cano et al, 2016;Rubí-Juárez et al, 2016;Xu, 2016;McLaughlin et al, 2020).…”

Section: Design Of Pollutant Degradation Experimentsmentioning

confidence: 99%

“…Various configurations and apparatus have been used in pollutant degradation with BDD electrodes, including simple electrochemical cells under static conditions and commercial multi-cell flow reactors. Thus, the influence of the electrode configuration and cell design on the intrinsic fluid dynamics (e.g., volumetric flow, Reynolds number, and mass transport) is an important factor (Cano et al, 2016;Xu, 2016).…”

Section: Cell Designmentioning

confidence: 99%

“…According to the literature, the adopted operating conditions to perform electrochemical oxidation of contaminants in wastewater are diverse. However, the removal of organic carbon from treated solutions is mainly influenced by the applied current density, mass transfer effects, and the properties of degraded pollutants (Xu, 2016).…”

Section: Operating Conditionsmentioning

confidence: 99%

“…The choice of electrolyte will affect the pH value, and acidic media is correlated to the improvement of pollutant degradation efficiency, benefiting the production of hydroxyl radicals at the anode surface (Zhou et al, 2011a;Daskalaki et al, 2013;Espinoza-Montero et al, 2013;Fabianska et al, 2014). However, in terms of pH effect, there are diverse and even contradictory results which are dependent on the pollutant chemistry (Brillas et al, 2005;Zhou et al, 2011b;Xu, 2016). Ideally, the electrochemical behavior of BDD electrodes should be evaluated in different pH and electrolyte solutions before the degradation experiments (Enache et al, 2009).…”

Section: Operating Conditionsmentioning

confidence: 99%

See 4 more Smart Citations

In-house vs. commercial boron-doped diamond electrodes for electrochemical degradation of water pollutants: A critical review

et al. 2023

View full text Add to dashboard Cite

Boron-doped diamond (BDD) electrodes are eco-friendly and widely used in efficient water remediation through electrochemical advanced oxidation processes (EAOPs). These anodes can completely mineralize a wide range of pollutants, only requiring electrical energy. Over the last 2 decades, numerous commercially available BDD electrodes have emerged, but little is known about their electrooxidation performance, particularly if compared to laboratory-produced anodes by different research groups. In this critical review, a comparison between in-house-made and commercially available BDD electrodes based on a systematic literature review (SLR) is carried out. SLR was quite useful in locating and selecting the scientific publications relevant to the topic, enabling information gathering on dissemination, growth, and trends in the application of BDD electrodes in the degradation of water pollutants. More specifically, data concerning the origin of the employed BDD electrodes, and their physicochemical properties were extracted from a thorough selection of articles. Moreover, a detailed analysis of the main parameters affecting the BDD electrodes’ performance is provided and includes selection and pre-treatment of the substrate material, chemical vapor deposition (CVD) method, deposition parameters, characterization methods, and operational conditions. This discussion was carried out fully based on the numerous performance indicators found in the literature. Those clearly revealed that there are only a few analogous points across works, demonstrating the challenge of establishing an accurate comparison methodology. In this context, we propose a figure-of-merit equation which aims at normalizing BDD degradation results for a specific contaminant, even if working under different experimental conditions. Two case studies based on the degradation of solutions spiked with phenol and landfill leachate treatment with commercial or in-house-made BDD electrodes are also presented. Although it was not possible to conclude which electrode would be the best choice, we propose a set of guidelines detailing a consistent experimental procedure for comparison purposes in the future.

show abstract

Section: Bdd Electrodes From Different Sourcesmentioning

confidence: 99%