Flow-through integration of FeOCl/graphite felt-based heterogeneous electro-Fenton and Ti4O7-based anodic oxidation for efficient contaminant degradation

Efficient Chloroquine Removal by Electro-Fenton with FeS2-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms

“…As delineated in Figure 2b, the diffraction pattern of the raw GF exhibited two peaks at 26.33°and 43.05°, corresponding to the (002) and (100) crystal facets of carbon with the graphite structure. 44,45 The detected diffraction peaks of FeS 2 /GF in Figure 2c directly into the solution. Such a phenomenon might result from the higher effective reaction area with FeS 2 fixed on the cathode which was conducive to the improved catalytic efficiency of FeS 2 , thus promoting the generation of • OH for removing CLQ.…”

“…Similar observations have been documented when exploring the effect of • OH on cyanides and oxytetracycline removal. 44,52 To further confirm the existence of • OH in EF-FeS 2 /GF, the EPR analysis was performed with DMPO as the trapping agent for S11). The degradation processes could be divided into two main paths.…”

Treatment of aqueous solutions of oxytetracycline by different electrochemical approaches: anodic oxidation, pressurized electro‐Fenton and oxidation by electrogenerated active chlorine

“…), can occur from the electro-oxidation of sulfate species, by both direct [Eqn (16)] or indirect [Eqn (17)] mechanisms considering that SO4 •− can be generated via reaction with heterogeneous free •OH, which is formed via water discharge [Eqn (1)]. 20 These species also can aid the organic's mineralization.…”

“…However, few data on mineralization were reported in these studies. Moreover, the possibility of coupling EF and anodic oxidation was studied using an iron oxychloride‐integrated graphite felt cathode and a sub‐stoichiometric titanium oxide (Ti 4 O 7 )‐based porous reactive electrochemical membrane (REM) anode 16 . Conversely, fewer studies have reported on the treatment of OTC by EAC.…”

“…Moreover, the possibility of coupling EF and anodic oxidation was studied using an iron oxychloride-integrated graphite felt cathode and a sub-stoichiometric titanium oxide (Ti 4 O 7 )-based porous reactive electrochemical membrane (REM) anode. 16 Conversely, fewer studies have reported on the treatment of OTC by EAC. However, it was shown that the addition of chlorides at different anodes enhanced the removal of OTC, even if a low removal of TOC was observed.…”