Integration of anodic and cathodic processes for the synergistic electrochemical production of peracetic acid

Reactor design as a critical input in the electrochemical production of peroxoacetic acid

“…First, we presented a prototype in which we performed the production of PAA from CH 3 COOH aqueous solutions combining the oxidation of CH 3 COOH by boron-doped diamond (BDD) anodes and the cathodic production of H 2 O 2 using a carbon-based gas diffusion electrode (GDE). 13,14 With this design, we observed a clear synergistic effect when combining both the anodic and the cathodic processes in the production of PAA, resulting in the highest concentration reported so far in the literature for the electrochemical production of PAA. Moreover, in those works, we demonstrated that the flow direction (from cathode to anode or vice versa) played an important role in the efficiency of the process.…”

“…Two different electrochemical cells were used and compared in the present work. The first cell (referred to in this manuscript as GDE reactor or GDE device), described in detail in previous works, consisted of an electrochemical reactor with three chambers: anode, cathode and gas chamber. The total volume of the raw solution was varied from 0.4 to 0.8 L in the first part of the work (section 3.1).…”

“…First, it can be formed by the reaction between CH 3 COOH and H 2 O 2 (reaction (1), the latter being produced by reduction of dissolved O 2 at the cathode (reaction 2). 13,18 A clear result of the influence of the chemical equilibrium described by Eqn ((1) is that the concentration of H 2 O 2 increases with the rate of PAA production. Once the concentration of H 2 O 2 decreases, the production of PAA reaches its plateau.…”

“…Based on this fact, our research group recently proposed two advances in the design of electrochemical reactors that can be used in the electrochemical production of PAA. First, we presented a prototype in which we performed the production of PAA from CH 3 COOH aqueous solutions combining the oxidation of CH 3 COOH by boron‐doped diamond (BDD) anodes and the cathodic production of H 2 O 2 using a carbon‐based gas diffusion electrode (GDE) . With this design, we observed a clear synergistic effect when combining both the anodic and the cathodic processes in the production of PAA, resulting in the highest concentration reported so far in the literature for the electrochemical production of PAA.…”

Electrochemical Synthesis of Peroxyacetic Acid on Pt/PtO and PbO2 Anodes

“…Electrochemical methods of PAA synthesis are divided into two directions: i) production of РАА by the cathodic generation of hydrogen peroxide with the 1 National Technical University "Kharkiv Polytechnic Institute", 2, Kyrpychova St., 61002 Kharkiv, Ukraine * beloustany@ukr.net Ó Bilous T., Tulskaya A., Ryshchenko I., Chahine I., Bairachnyi V., 2020 presence of acetic acid [7,8]; ii) production of РАА through the anodic oxidation [9][10][11][12][13][14]. The advantages of electrochemical synthesis are production of PAA directly in situ and synthesis of diluted PAA and acetic acid.…”