Degradation of sulfadiazine antibiotics by water falling film dielectric barrier discharge

Degradation of TAIC by water falling film dielectric barrier discharge – Influence of radical scavengers

“…6a). Rong et al, also used the same reactor to degrade the sulfadiazine antibiotics and found that the pH value of the solution decreased rapidly during the first 3 min and finally stayed around 1.40 [19]. When the ultrapure water containing nothing was used as the target solution, the pH value considerably decreased and finally stayed at around 1.50 (Fig.…”

“…1, which is similar to the one reported previously [19]. Briefly, an aluminum rod and an aluminum cylinder were used as two electrodes.…”

Degradation of methylene blue using double-chamber dielectric barrier discharge reactor under different carrier gases

“…The t-BuOH is a well-known ·OH-scavenger and widely used to confirm the presence of ·OH in plasma (Rong, 2014;Grabowski, 2007). It is able to deactivated ·OH by formation of inert radical ·CH 2 C(CH 3 ) 2 OH with the reaction rate of 6.010 8 mol·L -1 s -1 .…”

“…The NO x species was formed by discharge, when air was in the system (Manoj 2013). The resulting NO x (mainly NO and NO 2 ) dissolved in water forming strong HNO 2 (pK a 3.3) and HNO 3 (pK a -1.3) acidic, which were responsible for the pH decrease and the conductivity increase when using the air plasma (Rong, 2014;Brisset, 2015). The conductivity increased to 478 µS·cm -1 and 4150 µS·cm -1 when the discharge lasted for 40 min using the oxygen and air plasma.…”

Dielectric barrier discharge plasma induced degradation of aqueous atrazine

“…As one of the AOPs, dielectric barrier discharge (DBD) plasma generated at the gas-liquid interface has been attempted for the degradation of pollutants in water, such as diuron (Feng et al 2015;Feng et al 2008), sulfadiazine antibiotics (Rong et al 2014), 17β-estradiol (Gao et al 2013), and methylene blue (Huang et al 2010;Reddy et al 2013). DBD plasma generated at the gas-liquid interface could ignite various physical and chemical effects, such as ultraviolet (UV) radiation, shock waves, radicals (HO•, O•, and H•) and reactive molecules (H 2 O 2 and O 3 ), which diffused into the liquid and subsequently reacted with pollutants (Magureanu et al 2010).…”