I am working on Electro-Fenton System using Air Diffusion Cathode. I am not able to produce enough amount of H2O2 in my system. My objective is to generate H2O2 at Neutral pH
Dear Ayushi,
I strongly recommend this document
http://pubs.acs.org/doi/abs/10.1021/ez500178p?journalCode=estlcu
Abstract : The feasibility of the electrogeneration of H2O2 and degradation of an organic pollutant by a novel electro-Fenton (EF) process was demonstrated using dual rotating graphite felt disks to supply oxygen instead of the traditional aeration method, with methyl orange (MO) as the model pollutant. The effects of rotating speed, current density, and pH on the generation of hydrogen peroxide (H2O2) were investigated. At a current density of 50 A/m2, a rotating speed of 10 rpm, and a pH of 3, the concentration of H2O2 reached 116 mg/L in 1 h, which was much higher than that at 0 rpm (37 mg/L). The complete removal of 25 mg/L MO was achieved within 15 min, while the total organic carbon removal efficiency reached 58.7% at 2 h, which was almost 3-fold higher than that at 0 rpm (14.9%). The rotation of disk cathodes resulted in the efficient production of H2O2 without oxygen aeration, offering a potentially cost-effective EF method for degrading organic pollutants.
With my best regards
Prof. Bachir ACHOUR
I recommend this document:
On-site hydrogen peroxide production at pilot flow plant: application to electro-Fenton process
Or
Mineralization of the drug β-blocker atenolol by electro-Fenton and photoelectro-Fenton using an air-diffusion cathode for H 2 O 2 electrogeneration combined with a carbon-felt cathode for Fe 2+ regeneration
Dear Prof. ACHOUR,
I apologise to provide half information. I am working on Electro-Fenton at Neutral pH.
Pls. Guide
regards.
I am not an expert on this topic, but my view is to use pure oxygen instead of air which may solve your problem but the operating cost will be higher due to generation of oxygen. Not sure about whether it will operate at neutral pH.
I think electrode material is very critical for H2O2 yield. Please check the related references.
Dear Ayushi,
Could you briefly describe the conditions (specially the material) you are using to conduct your experiments?
This way, it will be easier for us to help you.
I let you know my scopus profile where you will find different works related to H2O2 production. In an about-to-be published article, we emphasize the fact that a mixture of carbon black and PTFE is the responsible for the efficient production of H2O2 (up to 100% efficiency at 100 mA cm-2 in a pressurized system at 30 bar)
https://www.scopus.com/authid/detail.uri?origin=AuthorProfile&authorId=56305851100&zone=
Hope it proves helpful,
Best regards
Hi Ayushi,
Our research group found that applying pulsed current could drastically enhance the H2O2 production in EF process, especially for porous cathode materials, such like graphite felt, carbon felt, carbon foam, etc.
Below are links of our recent research, hope they are helpful to you:
Article Highly efficient H2O2 electrogeneration from O2 reduction by...
Article Drastic Enhancement of H2O2 Electro-generation by Pulsed Cur...
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