A novel electrochemical setup for wastewater treatment-rotating electrochemical disc process(RECDP)was developed in this article. The anode and cathode are distributed alternatively and evenly on a flat round disc,whi...A novel electrochemical setup for wastewater treatment-rotating electrochemical disc process(RECDP)was developed in this article. The anode and cathode are distributed alternatively and evenly on a flat round disc,which was designed to improve mass transfer of organics from bulk solution to electrode surface,while at the same time increasing oxygen transfer from air to the liquid to benefit the organics oxidization.The color removal of dye Reactive Brilliant Orange X-GN(RBO)was experimentally investigated u...展开更多
An electrochemical-activated denitrifying bio-film system consisting of activated carbon fiber electrodes immobilized with denitrifying bacteria film as cathode was studied.A revised model for an electrochemical-activ...An electrochemical-activated denitrifying bio-film system consisting of activated carbon fiber electrodes immobilized with denitrifying bacteria film as cathode was studied.A revised model for an electrochemical-activated denitrifying biofilm was developed and validated by electro-chemical analysis of cathodal polarization curves and nitrate consumption rate.The cathodal polarization curve and nitrate consumption rate were introduced to verify the rate of electrochemical reaction and the activity of denitrifying bacteria,respectively.It was shown that the denitrification process effectively strengthened the electrochemical reaction while the electron also intensified denitrification activity.Electron was transferred between electrochemical process and biological process not only by hydrogen molecule but also by new produced active hydrogen atom.Additionally,a parameter of apparent exchange current density was deprived from the cathodal polarization curve with high overpotential,and a new bio-effect current density was defined through statistical analysis,which was linearly dependent to the activity of denitrification bacteria.Activated carbon fiber(ACF)electrode was also found to be more suitable to the electrochemical denitrifying system compared with graphite and platinum.展开更多
文摘A novel electrochemical setup for wastewater treatment-rotating electrochemical disc process(RECDP)was developed in this article. The anode and cathode are distributed alternatively and evenly on a flat round disc,which was designed to improve mass transfer of organics from bulk solution to electrode surface,while at the same time increasing oxygen transfer from air to the liquid to benefit the organics oxidization.The color removal of dye Reactive Brilliant Orange X-GN(RBO)was experimentally investigated u...
文摘An electrochemical-activated denitrifying bio-film system consisting of activated carbon fiber electrodes immobilized with denitrifying bacteria film as cathode was studied.A revised model for an electrochemical-activated denitrifying biofilm was developed and validated by electro-chemical analysis of cathodal polarization curves and nitrate consumption rate.The cathodal polarization curve and nitrate consumption rate were introduced to verify the rate of electrochemical reaction and the activity of denitrifying bacteria,respectively.It was shown that the denitrification process effectively strengthened the electrochemical reaction while the electron also intensified denitrification activity.Electron was transferred between electrochemical process and biological process not only by hydrogen molecule but also by new produced active hydrogen atom.Additionally,a parameter of apparent exchange current density was deprived from the cathodal polarization curve with high overpotential,and a new bio-effect current density was defined through statistical analysis,which was linearly dependent to the activity of denitrification bacteria.Activated carbon fiber(ACF)electrode was also found to be more suitable to the electrochemical denitrifying system compared with graphite and platinum.
