Comparison between the degradation effect induced by low pressure air plasma and at atmospheric pressure of diethyl (3h-1-ethoxy-3-phenoxazinylidene) ammonium chloride solution
Year: 2024
Type: article
Abstract: The influence of the number of air molecules on the degradation process of a dye (diethyl (3H-1-ethoxy-3-phenoxazinylidene) ammonium chloride) in aqueous solution by plasma was determined. The concentration of the solution was 17.00 mg/L, and it was exposed to plasma treatments performed at two different pressure values (~24 Torr / ~760 Torr), with an exposure duration of 50 minutes per treatment. Four plasma generation conditions (10, 15, 20 and 30 mA) were used at a voltage of 1500 V. The degradation of the dye was determined by UV/VIS spectrophotometry (absorbance and percentage of degradation) and chemical oxygen demand (COD), pH and bioassays with lettuce (Lactuca sativa) seeds. The temperature change was analyzed for both pressures. The degradation of the dye is more significant at atmospheric pressure than at low pressure for all treatments. The higher the plasma power, the greater the degradation.
Authors: Fidel Benjamín Alarcón-Hernández, Bartolo Yáñez-Carrillo, María del Carmen Fuentes-Albarrán, José Luis Gadea-Pacheco
Institution: Universidad Autónoma del Estado de Morelos
Language: English
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W4405384396