TY - JOUR
T1 - Study of Photochemical and Sonochemical Processes Efficiency for Degradation of Acibenzolar-S-Methyl Fungicide in Aqueous Solution
AU - Lamkhanter, Hajar
AU - Frindy, Sana
AU - Park, Yuri
AU - Sillanpӓӓ, Mika
AU - Mountacer, Hafida
N1 - Funding Information:
This work is the fruit of research internship at Department of Separation Sciences, University of Technology LUT, Mikkeli, Finland. The first author would like to thank Pr Sillanpää for this collaboration. Dr Frindy would like to thank Maa- JA vesitekniikan tuki ry (MVTT) for her financial support.
Publisher Copyright:
© 2022, The Tunisian Chemical Society and Springer Nature Switzerland AG.
PY - 2022/6
Y1 - 2022/6
N2 - In this study, the catalytic performance of photo-Fenton and sono-Fenton processes were tested on Acibenzolar-S-methyl fungicide. UV light source and ultrasound irradiation source (20 kHz of the frequency with a maximum of 125 W power output) were used for Fenton-based processes. The sono-Fenton process revealed the higher efficiency in ASM degradation with a 100% degradation rate within 20 min compared to photo-Fenton, Fenton, photolysis, and sonolysis processes that achieved only 90%, 52%, 43% and 19%, respectively. The investigation shows that ultrasound irradiation has accelerated the efficiency of the Fenton process by increasing the hydroxyl radicals ∙OH generation. The kinetic study was carried out under different pH conditions, ferrous ions concentration and hydrogen peroxide dosages. The result showed that the optimum condition for acibenzolar-s-methyl degradation was the acidic medium, low concentration of hydrogen peroxide and low concentration of ferrous ions. The contaminant was monitored and analysed in duplicate with high-performance liquid chromatography. A transformation mechanism pathway of the sonochemical oxidation was suggested based on gas chromatography/mass spectra analysis.
AB - In this study, the catalytic performance of photo-Fenton and sono-Fenton processes were tested on Acibenzolar-S-methyl fungicide. UV light source and ultrasound irradiation source (20 kHz of the frequency with a maximum of 125 W power output) were used for Fenton-based processes. The sono-Fenton process revealed the higher efficiency in ASM degradation with a 100% degradation rate within 20 min compared to photo-Fenton, Fenton, photolysis, and sonolysis processes that achieved only 90%, 52%, 43% and 19%, respectively. The investigation shows that ultrasound irradiation has accelerated the efficiency of the Fenton process by increasing the hydroxyl radicals ∙OH generation. The kinetic study was carried out under different pH conditions, ferrous ions concentration and hydrogen peroxide dosages. The result showed that the optimum condition for acibenzolar-s-methyl degradation was the acidic medium, low concentration of hydrogen peroxide and low concentration of ferrous ions. The contaminant was monitored and analysed in duplicate with high-performance liquid chromatography. A transformation mechanism pathway of the sonochemical oxidation was suggested based on gas chromatography/mass spectra analysis.
KW - Acibenzolar-S-methyl
KW - Advanced oxidation processes
KW - Fenton-based treatments
KW - Fungicide
KW - Hydroxyl radicals
UR - http://www.scopus.com/inward/record.url?scp=85127431180&partnerID=8YFLogxK
U2 - 10.1007/s42250-022-00355-y
DO - 10.1007/s42250-022-00355-y
M3 - Article
AN - SCOPUS:85127431180
SN - 2522-5758
VL - 5
SP - 683
EP - 690
JO - Chemistry Africa
JF - Chemistry Africa
IS - 3
ER -
