The Influence of NTP Reactor Geometry on H2 O2 Generation in Water

The aim of this paper is to present the influence of the geometry of non-thermal plasma reactors on plasma activated water parameters. The plasma activated water can be successfully used in agricultural applications due to the fact the generation technology is environmentally friendly and it contributes to the reduction and minimization of pesticides or fertilizers currently required in the plant cultivation process. This work is focused on the analysis of the influence of different parameters on the formation of hydrogen peroxide and energy efficiency of two non-thermal plasma reactors for plasma-activated water generation: a T-shaped reactor and an I-shaped reactor. For the two types of reactors, it was also considered the influence of the polarity of the DC pulse power supply for different input parameters such the frequency (60, 150, 250 Hz), gas flow rate (1 and 2 L/min Ar) and water flow rate (5, 10, 15 and 20 mL/min). The concentration of hydrogen peroxide generated into plasma activated water acts as a disinfection agent and it was considered as an indicator of energy efficiency.