Destruction Kinetics of 2,4 Dichlorophenol Aqueous Solutions in an Atmospheric Pressure Dielectric Barrier Discharge in Oxygen

Reducing the Toxicity of Tetracycline Solutions and the Kinetics of Decomposition under the Action of DBD in Oxygen

“…The decomposition kinetics was well described by the equation of the first kinetic order (the lines in Fig. 2, R 2 ≥ 0.98), which was obtained in the study (see Gushchin et al 16 ) of the plug flow reactor:…”

“…The given values of the energy yields are close to the results obtained when processing a solution of phenol (0.01 ÷ 0.03 molecules/100 eV) 17 and about 3 times less in comparison with 2,4-dichlorophenol (0.05 ÷ 0.17 molecules/100 eV) in the DBD in this concentration range. 16 When treating an aqueous solution of diclofenac (a pharmaceutical preparation with the formula C 14 H 11 Cl 2 NO 2 ) in a pulsed corona discharge with an initial concentration of 50 mg/l, the rate of decomposition was 0.39 μmol (l • s) -1 that is, almost 43 times less than in our case. 18 The energy yield at 50% of the degree of diclofenac decomposition was equal to 1 g (kWh) -1 and for tetracycline in DBD, it was 5 g (kWh) -1 ; that is, DBD with a flow-through system is more efficient than a pulsed corona discharge.…”

“…It should be noted that similar regularities (the sequence of formation of acids, aldehydes, and CO 2 ) were observed during the decomposition of aqueous solutions of phenol, 19 carboxylic acids, 20,21 and 2,4-dichlorophenol. 16 Apparently, these kinetics are common for derivatives of aromatic compounds.…”

Synergistic Effect of Dielectric Barrier Discharge Plasma and TiO2-Pillared Montmorillonite on the Degradation of Rhodamine B in an Aqueous Solution

“…A scheme of the DBD reactor is shown in Figure 13 [16]. The reactor is a coaxial system consisting of an outer Pyrex tube, 12 mm in diameter, which is the dielectric barrier of the discharge, and an inner aluminum-alloy electrode with a diameter of 8 mm.…”

“…One of the possible ways to intensify wastewater treatment processes is the dielectric barrier discharge (DBD), which has already found wide application in environmental protection systems [14][15][16]. High purification efficiency can be achieved by combining plasma-chemical and photocatalytic purification methods with the observation of a synergistic effect [17][18][19] costs [20].…”