TY  - JOUR
T1  - Water Remediation from Recalcitrant Pollution Using the Galvano-Fenton Process: A Modeling Approach of the Hydroxyl Radical Generation and the Energy Efficiency
AU  - Kerboua, Kaouther
AU  - Haddour, Naoufel
AU  - Gasmı, Intissar
AU  - Hamdaouı, Oualid
PY  - 2022
DA  - December
DO  - 10.55549/epstem.1227591
JF  - The Eurasia Proceedings of Science Technology Engineering and Mathematics
JO  - EPSTEM
PB  - ISRES Publishing
WT  - DergiPark
SN  - 2602-3199
SP  - 506
EP  - 516
VL  - 21
LA  - en
AB  - The hydroxyl radical is the most powerful oxidant after fluorine, and is the key reactant of theadvanced oxidation processes AOP. Monitoring the kinetics of formation and reaction of this short life speciesis one of the challenging tasks from an experimental point of view. Thus, modelling is suggested to be oneefficient tool for a comprehensive and predictive study of AOPs, particularly the Galvano-Fenton process. In thepresent study, mathematical modelling is used to describe the kinetics of hydroxyl radical 𝐻𝑂• generation andorganic substrate 𝑅𝑂 degradation within the Galvano-Fenton process, based on the spontaneous galvaniccorrosion of iron waste and in situ ferrous ion catalyst generation. A range of typical absolute kinetic constantsof 106 à 1010 M-1.s-1 is considered to characterize the attack of 𝑅𝑂 species by 𝐻𝑂•. Phenol is presented as amodel pollutant for a total mineralization model. The numerical simulations demonstration a quasi-linearevolution of hydroxyl radical production during the first stage of the Galvano-Fenton process. A comparison ofthe Galvano-Fenton process with the classic Fenton in terms of kinetics, and electro-Fenton in terms ofenergetic performance, revealed that the spontaneous galvanic generation of ferrous ions in the Galvano-Fentonprocess leads to a higher rate of the reaction a higher instantaneous concentration of ferric ions accompanyingthe release of hydroxyl radicals and hence a better oxidation efficiency, as well as a positive energy balance. Aparticular attention was given to the ratio of the degradation efficiency to the released energy.
KW  - Advanced oxidation
KW  - Spontaneous corrosion
KW  - Kinetics
KW  - Chemical mechanism
KW  - Energy efficiency.
UR  - https://doi.org/10.55549/epstem.1227591
L1  - https://dergipark.org.tr/en/download/article-file/2865387
ER  -