Energy consumption and reaction rate optimization combining turbulence promoter and current modulation for electrochemical mineralization

Faria, Lúrima Uane Soares; Oliveira, Kaíque S.G.C.; Veroli, Alyne B.; Aquino, José M.; Ruotolo, Luís A.M.

doi:10.1016/j.cej.2021.129363

Chemical Engineering Journal

2021

DOI: 10.1016/j.cej.2021.129363

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Energy consumption and reaction rate optimization combining turbulence promoter and current modulation for electrochemical mineralization

Lúrima Uane Soares Faria

Kaíque S.G.C. Oliveira

Alyne B. Veroli

et al.

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Cited by 8 publications

References 19 publications

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Oxygen Reduction Reaction Coupled Electro‐Oxidation for Highly‐Efficient and Sustainable Water Treatment

Ran,

Qin,

Liu

et al. 2024

Angewandte Chemie

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Electro‐oxidation (EO) technology demonstrates significant potential in wastewater treatment. However, the high energy consumption has become a pivotal constraint hindering its large‐scale implementation. Herein, we design an EO and 4‐electron oxygen reduction reaction coupled system (EO‐4eORR) to replace the traditional EO and hydrogen evolution reaction (HER) coupled system (EO‐HER). The theoretical cathodic potential of the electrolytic reactor is tuned from 0 V (vs. RHE) in HER to 1.23 V (vs. RHE) in 4eORR, which greatly decreases the required operation voltage of the reactor. Moreover, we demonstrate that convection can improve the mass transfer of oxygen and organic pollutants in the reaction system, leading to low cathodic polarization and high pollutant removal rate. Compared with traditional EO‐HER system, the energy consumption of the EO‐4eORR system under air aeration for 95 % total organic carbon (TOC) removal is greatly decreased to 2.61 kWh/kgTOC (only consider the electrolyzer energy consumption), which is superior to previously reported EO‐based water treatment systems. The reported results in this study offer a new technical mode for development of highly efficient and sustainable EO‐based treatment systems to remove organic pollutants in waste water.

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Oxygen Reduction Reaction Coupled Electro‐Oxidation for Highly‐Efficient and Sustainable Water Treatment

Ran,

Qin,

Liu

et al. 2024

Angewandte Chemie

View full text Add to dashboard Cite

show abstract

Oxygen Reduction Reaction Coupled Electro‐Oxidation for Highly‐Efficient and Sustainable Water Treatment

Ran,

Qin,

Liu

et al. 2024

Angew Chem Int Ed

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Embedding wasted hairs in Ti/PbO2 anode for efficient and sustainable electrochemical oxidation of organic wastewater

Shao

Wang

Zhang

et al. 2022

Chinese Chemical Letters

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Energy consumption and reaction rate optimization combining turbulence promoter and current modulation for electrochemical mineralization

Cited by 8 publications

References 19 publications

Oxygen Reduction Reaction Coupled Electro‐Oxidation for Highly‐Efficient and Sustainable Water Treatment

Oxygen Reduction Reaction Coupled Electro‐Oxidation for Highly‐Efficient and Sustainable Water Treatment

Oxygen Reduction Reaction Coupled Electro‐Oxidation for Highly‐Efficient and Sustainable Water Treatment

Embedding wasted hairs in Ti/PbO2 anode for efficient and sustainable electrochemical oxidation of organic wastewater

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