Regular Article – Plasma Physics
Design and development of dielectric barrier discharge setup to form plasma-activated water and optimization of process parameters
Atmospheric Plasma Division, Institute for Plasma Research (IPR), 382428, Gandhinagar, Gujarat, India
2 Homi Bhabha National Institute, Training School Complex, Anushaktinagar, 400094, Mumbai, India
Accepted: 6 April 2022
Published online: 5 May 2022
In the present work, a co-axial cylindrical plasma device has been designed and developed to generate dielectric barrier discharge to form plasma-activated water (PAW). The voltage–discharge current characteristics and optical emission spectroscopy are performed to characterize the plasma and identify the formed plasma species. The impact of process parameters on physicochemical properties of PAW and on the concentration of reactive oxygen–nitrogen species is studied using a design of experiment methodology. The obtained results are analyzed using analysis of variance, effect estimation, marginal means, and regression analysis. The optimum values of process parameters to form PAW are determined using MATLAB fmincon function. The obtained results show that plasma–water exposure time and plasma discharge power significantly influence the physicochemical properties of PAW and the concentration of NO3‾ and NO2‾ ions in plasma-activated water.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022