Synergy of electrochemical oxidation using boron-doped diamond (BDD) electrodes and ozone (O3) in industrial wastewater treatment

García-Morales, M. A.; Roa‐Morales, Gabriela; Dı́az, Carlos; Bilyeu, Bryan; Rodrigo, Manuel A.

doi:10.1016/j.elecom.2012.10.028

Cited by 69 publications

(27 citation statements)

References 15 publications

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“…, cathode side, full line) . Electrochemical oxidation is also coupled with other processes, e.g., in combination with electrocoagulation , electrosorption , or ozonation (generated by a high‐voltage or UV/ozone generator) .…”

Section: Process Description Of Established Processes and Future Prosmentioning

confidence: 99%

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Electrochemical Reactors for Wastewater Treatment

et al. 2019

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Regarding the treatment of (waste)water, electrochemical processes have various advantages over other methods. They are robust, easy to operate and flexible in case of fluctuating wastewater streams. In addition, a relatively broad spectrum of organic and inorganic impurities can be removed. This contribution provides an overview of electrochemical reactors for water, process water, and wastewater treatment, which are already in technical‐scale operation or subject of research. Some essential basics of electrochemical processes for the treatment of water are presented and examples for applications are given. This is followed by a description of the reactors.

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Section: Process Description Of Established Processes and Future Prosmentioning

confidence: 99%

“…Subsequently, the generated ozone is transferred into the wastewater by a gas and liquid contact apparatus. In electrochemical reactors, ozone is generated directly in the water , , . While the generation of ozone is also used in situ in E‐AOP water treatment (see Sect.…”

Section: Process Description Of Established Processes and Future Prosmentioning

confidence: 99%

Electrochemical Reactors for Wastewater Treatment

et al. 2019

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“…This is not a new process with previous work being carried out on various different anodes such as Pt 13,14 , β-PbO 2 15-17 , BDD 18,19 and Ni/Sb-SnO 2 20-22 anode materials. The electrochemical splitting of water can occur through either a 4 or 6 step electron process shown in Reactions 2 and 3: …”

Section: Introductionmentioning

confidence: 99%

Insights into the mechanism of electrochemical ozone production via water splitting on the Ni and Sb doped SnO₂ catalyst

Gibson

Wang

Hardacre

et al. 2017

Phys. Chem. Chem. Phys.

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This is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication.Accepted Manuscripts are published online shortly after acceptance, before technical editing, formatting and proof reading. Using this free service, authors can make their results available to the community, in citable form, before we publish the edited article. We will replace this Accepted Manuscript with the edited and formatted Advance Article as soon as it is available.You can find more information about Accepted Manuscripts in the author guidelines. The H2O splitting mechanism is a very attractive alternative used in electrochemistry for the formation of O3. The most efficient catalysts employed for this reaction at room temperature are SnO2-based, in particular the Ni/Sb-SnO2 catalyst. In order to investigate the H2O splitting mechanism Density Functional Theory (DFT) was performed on a Ni/Sb-SnO2 surface with oxygen vacancies. By calculating different SnO2 facets, the (110) facet was deemed most stable, and further doped with Sb and Ni. On this surface, the H2O splitting mechanism was modelled paying particular attention to the final two steps, the formation of O2 and O3. Previous studies on β-PbO2 have shown that the final step in the reaction (the formation of O3) occurs via an Eley-Rideal style interaction where surface O2 desorbs before attacking surface O to form O3. It is revealed that for Ni/Sb-SnO2, although the overall reaction is the same the surface mechanism is different. The formation of O3 is found to occur through a Langmuir-Hinshelwood mechanism as opposed to Eley-Rideal. In addition to this the relevant adsorption energies (Eads), Gibb's free energy (ΔGrxn) and activation barriers (Eact) for the final two steps modelled in the gas phase have been shown; providing the basis for a tool to develop new materials with higher current efficiencies.

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“…Coupling ozone and EO treatment significantly improved COD removal from industrial park wastewater which was mixture of 144 different facilities [73]. The coupled process was efficient (99.9 % COD removal in an hour) at a relatively low current density (30 mA/cm 2 ) so the synergistic effect was easily recognized.…”

Section: Accepted Manuscriptmentioning

confidence: 95%