Low voltage bubble discharge in the water using metal clutched porous ceramic electrode for environmental application

So far, there have been many plasma methods developed for wastewater treatment but being expensive processes, none of them has actually replaced the conventional wastewater treatment methods. So, the current focus of research in this field is to develop a plasma process which is efficient for the purpose but at the same time cost-effective for industrial and commercial applications. In our experiment we used a porous ceramic electrode clutched by a hollow metal frame having a gas hoarse inlet. The gas can be passed through this metal-ceramic electrode forming bubbles in the surrounding water medium. We made a parallel-plate DBD-like configuration using t h e metal-ceramic electrode and a punched metal electrode in order to have bubbles between them. Applying the pulsed voltage across these electrodes, discharge was observed inside the gas bubbles. The frequency and pulse width of the pulsed voltage device used were 5 kHz and 1□s respectively.