Electrochemical ozone production in inert supporting electrolytes on a boron-doped diamond electrode with a solid polymer electrolyte electrolyzer

This study investigated how inert supporting electrolytes (SEs), which increase the electrical conductivity, affect electrochemical ozone production (EOP) on a boron-doped diamond (BDD) electrode. Regardless of the SE species, the EOP was suppressed about 60% in a SE concentration of 1 mM for which the conductivity is similar to that of tap water compared to deionized water. The production of H2O2, which is known to be generated by the combination of , was also suppressed. On the other hand, the formation of was not significantly affected by the presence of SEs, an intermediate for ozone production. Consequently, suppression of EOP by SE can be explained by physical interference from the diffusion or combination of by the SE anions concentrated near the electrode surface. This study contributes by providing a better mechanistic understanding of the effect of SEs on EOP in a solid polymer electrolyte/BDD system.clos

Simple and cost-effective fabrication of blue colored TiO2 nanotube array for replacing dimensional stable anode (DSA (R)) and boron doped diamond (BDD) electrode

11Nsci

Electroconductive Feed Spacer as a Tool for Biofouling Control in a Membrane System for Water Treatment

This study investigated the application of electrical potentials to an electroconductive feed spacer (ECFS) as a tool for controlling biofouling in a lab-scale cross-flow membrane system. When the ECFS was electrically polarized for 30 min after a 24 h biofouling occurrence, 33–44% of the permeate flux was recovered without any damage to the membrane. This recovery can be explained by the effective detachment of the attached bacteria or biofilms on the membrane surface as well as the ECFC. Overall, the results of this study suggest that an ECFS with a proper electrical potential is an effective method for biofouling control in membrane systems for water treatment