About the operation of the cold plasma GlidArc type reactors with rotary discharge and auxiliary electrodes

The cold plasma type electrochemical reactors are more often used for different applications such air or solutions decontamination, surfaces treatment and in some cases for bio-decontamination or even sterilization [1]. In the last decade, in the medicine field, several applications have been developed which assure bio-compatibility of the implant materials or even are used to treat living tissues (postsurgical or for skin disorders). The utilizations of the auxiliary electrodes in the construction of the GlidArc reactors confer on them the possibility to command and to control the main discharge, obtaining in this way certain benefits for the applications which use such devices [2], [9], [11]. Following the innovative solutions of the GlidArc type electrochemical reactors with auxiliary electrodes and planar discharge, volumic discharge or rotary discharge proposed by our research team, [3], [4], this paper aims are to present a appropriate mathematical model regarding the operation of the reactors with rotary discharge and auxiliary electrodes. In this way can be defined the fact that there is only one possible position of the auxiliary electrodes for which the command and the control of the discharge can be assured in the case of the reactors with rotary discharge comparing with the case of the reactors with planar symmetry where there are two possible positions of the auxiliary electrodes. Using the proposed mathematical model can be highlighted the influence of different constructive factors on the discharge evolution. The practice experience in implementation of the GlidArc type reactors with auxiliary electrodes is fully confirmed by the results offered by the mathematical model proposed in this paper.