Plasma-Activated Tap Water by Gliding Arc Discharge Through Bubbles Using an Inverted Reactor Approach

Resumo

© 1973-2012 IEEE.This study employed an inverted reactor approach to activate tap water (TW) using effluent bubbles derived from a gliding arc discharge (GAD). Optical emission spectroscopy (OES) analysis revealed the dominant presence of nitrogen species and oxygen radicals within specified spectral ranges. The physicochemical attributes of the plasma-activated TW (PATW) remained consistent, highlighting the efficacy of the reactor's bubbling system. Through UV-Vis spectrophotometry and pH analysis, the notable observation was the stabilizing influence of hydrogen peroxide (H2O2) and positive hydrogen ions (H+) during the initial activation phases (75 min), which played a significant role in maintaining mildly alkaline pH. Energy efficiency metrics demonstrated a decline up to 1.25 h of activation, with subsequent stabilization. Our research outcomes further emphasize the efficacy of GAD, shedding light on its significant potential in optimizing the water activation process.

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