discoloration of an azo dye Red Methyl by gas-liquid gliding arc discharge plasma of humid air

This paper reports on using non-thermal plasma provided by an electric gliding discharge in humid air to the treatment of Red Methyl. The main advantage of this system is that reactive species like OH produced by the Glidarc can be used for the treatment of wastewater. Additive amount of ferrous ions and titanium oxide increase the discoloration rate. The degradation efficiency is around 97,8 pour cent. This implies that the majority molecules of Red Methyl are destroyed. The hydroxylation reaction of Red Methyl can then be treated as a kinetic pseudo-first order.