|
KMID : 1007520130220061773
|
|
Food Science and Biotechnology
2013 Volume.22 No. 6 p.1773 ~ p.1778
|
|
|
Aqueous Degradation of Imidacloprid and Fenothiocarb using Contact Glow Discharge Electrolysis: Degradation Behavior and Kinetics
|
|
Hong Su-Myeong
Min Zaw-Win
Mok Chul-Kyoon
Kwon Hye-Young
Kim Taek-kyum
Kim Doo-Ho
|
|
|
Abstract
|
|
|
|
Degradation of the pesticides fenothiocarb and imidacloprid in water using contact glow discharge electrolysis (CGDE) achieved rates of 57.8 and 43.2% respectively. Degradation was enhanced using citric or hydrochloric acid to lower the pH to 3.0. Both acids enhanced both the degradation rate and the amount. Fenothiocarb degradation was 77.14% at pH 3 with citric acid, and 100% with HCl. Degradation of imidacloprid at pH 3 was 70.18% with citric acid and 93.02% with HCl. Acidic conditions favor either production of ?OH radicals or enhancement of the degradation of organic compounds by ?OH. Both the degradation rates and amounts for fenothiocarb and imidacloprid were reduced in the presence of methanol due to competition between pesticides and MeOH for ?OH. Degradation of pesticides was not completely inhibited by MeOH. Degradation of both fenothiocarb and imidacloprid using CGDE obeys a first-order rate law with high regression coefficient values (R2>0.99).
|
|
|
KEYWORD
|
|
|
CGDE, fenothiocarb, imidacloprid, degradation, pesticide
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|