0000000000751038

AUTHOR

J.f. Pérez

showing 2 related works from this author

Effect of air pressure on the electro-Fenton process at carbon felt electrodes

2018

Abstract The effect of air pressure on electro-Fenton (PrEF process) was evaluated using two organic substances (maleic acid and Acid Orange 7) as model organic pollutants. First experiments were performed using a conventional carbon felt (CF) cathode. At room pressure, a slow removal of maleic acid was obtained, together with the generation of formic acid. Conversely, using pressurized air, the removal of maleic acid was dramatically accelerated and the formation of formic acid was not detected. The utilization of a carbon felt modified by the deposition of carbon black + PTFE mixture (MCF) and of pressurized air allowed to achieve even faster and almost total (>95%) removal of total organ…

PollutantTotal organic carbonPrEF Wastewater treatment Air pressure Electro-Fenton Carbon felt Organic pollutants Acid Orange 7 Maleic acidAtmospheric pressureMaleic acidFormic acidGeneral Chemical EngineeringCompressed air02 engineering and technology010501 environmental sciences021001 nanoscience & nanotechnology01 natural sciencesCathodelaw.inventionchemistry.chemical_compoundchemistrylawElectrodeElectrochemistry0210 nano-technology0105 earth and related environmental sciencesNuclear chemistry
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Effect of pressure on the electrochemical generation of hydrogen peroxide in undivided cells on carbon felt electrodes

2017

The electrochemical generation of H2O2can be performed in aqueous solutions by cathodic reduction at carbonaceous cathodes of oxygen coming from air. The performances of the process in terms of concentration of H2O2and current efficiency (CE) are limited by the low solubility of oxygen in water at atmospheric pressure. However, the solubility of oxygen can be increased upon enhancing the air pressure. The effect of pressure on the electrochemical generation of hydrogen peroxide was studied in undivided cells changing the pressure from 0 to 30 relative bar and the current density from 1 to 100 mA cm−2. Simple carbon felt and compact graphite cathodes were first used. A dramatic effect of…

carbon blackGeneral Chemical EngineeringInorganic chemistrychemistry.chemical_elementhydrogen peroxide02 engineering and technologyElectrolyte010402 general chemistryElectrochemistry01 natural sciencesOxygenchemistry.chemical_compoundcarbon feltmodified cathodeElectrochemistryChemical Engineering (all)GraphiteHydrogen peroxideElectro generationAtmospheric pressureCarbon blackSettore ING-IND/27 - Chimica Industriale E Tecnologica021001 nanoscience & nanotechnologyCompact graphite0104 chemical scienceschemistryair pressure0210 nano-technologyBar (unit)
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