Unprecedented roles of submillimetric interelectrode distances and electrogenerated gas bubbles on mineral cathodic electro-precipitation: Modeling and interface studies

Electrosorption of phenolic compounds from olive mill wastewater: Mass transport consideration under a transient regime through an alginate-activated carbon fixed-bed electrode

“…The internal ohmic resistances were determined according to Eq. 3 (Adnan et al, 2022;Miller et al, 2019):…”

Roles of H2 evolution overpotential, materials porosity and cathode potential on mineral electro-precipitation in microfluidic reactor – New criterion to predict and assess interdependency

“…Electrochemical impedance spectroscopy (EIS) was conducted in galvanostatic mode in frequencies ranging between 100 kHz to 100 mHz to characterize the electrochemical behavior of electrolyte at the interface of the investigated cathodes during electrolysis (i.e., charge transfer resistance (RCT), double layer capacitance (CDL), resistance of porous non-conductive precipitation film (RF)), by following the protocol and the equivalent electrical circuit model defined in a previous study [36].…”

“…Galvanostatic electrolysis using flow-by parallel-plate configuration was used to run the electrolysis according to a setup detailed elsewhere [27,36]. Two values of applied current were investigated: 20 (0.4 mA cm -2 ) and 200 mA (4 mA cm -2 ) using a HMP4040 power supply (Rohde & Schwarz, Meudon-la-Forêt, France).…”

“…The electrolysis was carried out using 500 mL solution containing 150 mg L -1 Ca 2+ , 5 mg L -1 Mg 2+ and 60 mg-C L -1 of total inorganic carbon (TIC), which was representative of the properties of reclaimed municipal wastewater [27]. The solutions were recirculated at flow rates of 20, 100 and 600 mL min -1 using 100, 500 and 3000 µm delec respectively, to ensure an equivalent residence time (0.025 min) under each condition, while staying under similar hydrodynamic regime (laminar) [36].…”

Recent advances in electro-Fenton process and its emerging applications

“…For example, FeOx nanoparticles embedded in N-doped hierarchically porous carbon (FeOx/NHPC) allow enhanced H2O2 electro-generation and Fe(II) regeneration, leading to higher EF treatment efficiency (Fig.3b)(Cao et al, 2020).Though promising, further long-term stability and cost effectiveness studies of these catalysts will be required for testing the viability at industrial-scale. Moreover, the influence of those catalysts on alkalization rate at the cathode surface should be carried out to avoid cathode passivation, when dealing with real wastewater containing magnesium and/or calcium and carbonates(Adnan et al, 2022).4.4. Degradation of perhalogenated organics: ipso-substitutionAll AOPs, particularly EF process, rely on the generation of • OH, whose reactivity is quasi non-selective towards organic molecules(Mousset et al, 2018).…”