Degradation of pesticides present in water using non-thermal plasmas (NTP) at atmospheric pressure
Résumé
The intensive use of pesticides in agriculture generates a contamination of surface water and groundwater. However, conventional methods used in wastewater treatment plant remain partially effective for persistent organic pollutants (POPs). Advanced oxidation processes are implemented to degrade these pollutants [1]. This research deals with the degradation by non-thermal plasmas (NTP) process at atmospheric pressure of the micropollutants present in the water. The first part of this study aims to compare the treatment of a target pesticide: Chlortoluron using two kinds of reactors: a plasma jet and a gliding arc discharge (GlidArc). For this, qualitative and quantitative analyses of the treated solutions were carried out. The second part of this works concerns the testing of a new NTP reactor on the degradation of chlortoluron in order to know if it is interesting to add this reactor to our study of pesticides degradation. [1] F. Zaviska et al, Journal of Water Science (2009), 22(4), 535–564.