Modeling and Optimization of p-Benzoquinone Degradation via Flow-By Electro-Oxidation on Boron-Doped Diamond Electrodes

Ever Peralta-Reyes; Alejandro Regalado-Méndez; Frida A. Robles; Carlos Méndez-Durazno; Patricio J. Espinoza-Montero

doi:10.3390/pr13040942

Modeling and Optimization of p-Benzoquinone Degradation via Flow-By Electro-Oxidation on Boron-Doped Diamond Electrodes

Ever Peralta-Reyes
, Alejandro Regalado-Méndez^*
, Frida A. Robles
, Carlos Méndez-Durazno
, Patricio J. Espinoza-Montero^*

^*Autor correspondiente de este trabajo

Producción científica: Revista › Artículo › revisión exhaustiva

Resumen

The electro-oxidation of p-Benzoquinone (p-BQ) was investigated in a flow-by reactor (FM01-LC) without separation, with two boron-doped diamond (BDD) electrodes as both the anode and cathode, in batch recirculation mode. The optimal operating conditions were determined using response surface methodology, specifically a face-centered central composite design. The initial pH (pH₀) and applied current density (j) were evaluated as factors, while the p-BQ (η (%)) served as the response variable. The optimal conditions, a pH₀ of 6.52 and a j of 0.124 A/cm², achieved a maximum removal efficiency of 97.32% after 5 h of electrolysis. The specific energy consumption and total operating cost were 127.854 kWh/m³ and USD 3.7 USD/L, respectively.

Idioma original	Inglés
Número de artículo	942
Publicación	Processes
Volumen	13
N.º	4
DOI	https://doi.org/10.3390/pr13040942
Estado	Publicada - 22 mar. 2025

Nota bibliográfica

Publisher Copyright:
© 2025 by the authors.

Financiación

The authors thank the Pontificia Universidad Cat\u00F3lica del Ecuador for financial support through the project: \u201CPreparation of boron-doped diamond (BDD) photoelectrodes modified with bismuth semiconductors and their application in photoelectrocatalysis\u201D PEP element: QIPR0027-IBYA103281090.

Financiadores	Número del financiador
Pontificia Universidad Católica del Ecuador	QIPR0027-IBYA103281090

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title = "Modeling and Optimization of p-Benzoquinone Degradation via Flow-By Electro-Oxidation on Boron-Doped Diamond Electrodes",

abstract = "The electro-oxidation of p-Benzoquinone (p-BQ) was investigated in a flow-by reactor (FM01-LC) without separation, with two boron-doped diamond (BDD) electrodes as both the anode and cathode, in batch recirculation mode. The optimal operating conditions were determined using response surface methodology, specifically a face-centered central composite design. The initial pH (pH₀) and applied current density (j) were evaluated as factors, while the p-BQ (η (\%)) served as the response variable. The optimal conditions, a pH0 of 6.52 and a j of 0.124 A/cm2, achieved a maximum removal efficiency of 97.32\% after 5 h of electrolysis. The specific energy consumption and total operating cost were 127.854 kWh/m3 and USD 3.7 USD/L, respectively.",

keywords = "BDD electrodes, electrochemical degradation, flow-by reactor, optimization, p-Benzoquinone",

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T1 - Modeling and Optimization of p-Benzoquinone Degradation via Flow-By Electro-Oxidation on Boron-Doped Diamond Electrodes

AU - Peralta-Reyes, Ever

AU - Regalado-Méndez, Alejandro

AU - Robles, Frida A.

AU - Méndez-Durazno, Carlos

AU - Espinoza-Montero, Patricio J.

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N2 - The electro-oxidation of p-Benzoquinone (p-BQ) was investigated in a flow-by reactor (FM01-LC) without separation, with two boron-doped diamond (BDD) electrodes as both the anode and cathode, in batch recirculation mode. The optimal operating conditions were determined using response surface methodology, specifically a face-centered central composite design. The initial pH (pH₀) and applied current density (j) were evaluated as factors, while the p-BQ (η (%)) served as the response variable. The optimal conditions, a pH0 of 6.52 and a j of 0.124 A/cm2, achieved a maximum removal efficiency of 97.32% after 5 h of electrolysis. The specific energy consumption and total operating cost were 127.854 kWh/m3 and USD 3.7 USD/L, respectively.

AB - The electro-oxidation of p-Benzoquinone (p-BQ) was investigated in a flow-by reactor (FM01-LC) without separation, with two boron-doped diamond (BDD) electrodes as both the anode and cathode, in batch recirculation mode. The optimal operating conditions were determined using response surface methodology, specifically a face-centered central composite design. The initial pH (pH₀) and applied current density (j) were evaluated as factors, while the p-BQ (η (%)) served as the response variable. The optimal conditions, a pH0 of 6.52 and a j of 0.124 A/cm2, achieved a maximum removal efficiency of 97.32% after 5 h of electrolysis. The specific energy consumption and total operating cost were 127.854 kWh/m3 and USD 3.7 USD/L, respectively.

KW - BDD electrodes

KW - electrochemical degradation

KW - flow-by reactor

KW - optimization

KW - p-Benzoquinone

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