TY - JOUR
T1 - Fluidized-bed Fenton treatment of imidacloprid
T2 - Optimization and degradation pathway
AU - Lacson, Carl Francis Z.
AU - de Luna, Mark Daniel G.
AU - Dong, Chengdi
AU - GARCIA SEGURA, Sergio
AU - Lu, Ming Chun
N1 - Funding Information:
The authors would like to thank the Ministry of Science and Technology, Taiwan , for financially supporting this research under Contract No. 106-2221-E-041-001 and the Department of Science and Technology of Philippines through the Engineering Research and Development for Technology (ERDT).
Publisher Copyright:
© 2018 Chinese Institute of Environmental Engineering, Taiwan
PY - 2018/11
Y1 - 2018/11
N2 - Environmental impact of pesticides is one of the great concerns being addressed by water-food nexus research. Imidacloprid is one of the most used insecticides as an alternative for carcinogenic organochloride insecticides. Even though Imidacloprid has lower toxicity for mammals, its fate and incomplete degradation by conventional wastewater treatment technologies are worrisome when considering continuous environmental exposure. Application of fluidized-bed Fenton process is proposed as an alternative treatment to mitigate the impact of imidacloprid in water. The consequence of different experimental parameter variations such as Fe2+ catalyst concentration, H2O2 concentration and propylene glycol (a common excipient in commercial pesticides) was evaluated. Experimental results under optimized conditions demonstrate almost complete removal of imidacloprid and abatement of chemical oxygen demand and total organic carbon. The intermediates of oxidized imidacloprid yield during fluidized-bed Fenton treatment were identified using GC–MS and a reaction sequence for imidacloprid degradation was proposed.
AB - Environmental impact of pesticides is one of the great concerns being addressed by water-food nexus research. Imidacloprid is one of the most used insecticides as an alternative for carcinogenic organochloride insecticides. Even though Imidacloprid has lower toxicity for mammals, its fate and incomplete degradation by conventional wastewater treatment technologies are worrisome when considering continuous environmental exposure. Application of fluidized-bed Fenton process is proposed as an alternative treatment to mitigate the impact of imidacloprid in water. The consequence of different experimental parameter variations such as Fe2+ catalyst concentration, H2O2 concentration and propylene glycol (a common excipient in commercial pesticides) was evaluated. Experimental results under optimized conditions demonstrate almost complete removal of imidacloprid and abatement of chemical oxygen demand and total organic carbon. The intermediates of oxidized imidacloprid yield during fluidized-bed Fenton treatment were identified using GC–MS and a reaction sequence for imidacloprid degradation was proposed.
KW - Advanced oxidation processes
KW - Contaminants of emerging concern
KW - Fluidized-bed Fenton
KW - Pesticides
KW - Wastewater treatment technologies
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U2 - 10.1016/j.serj.2018.09.001
DO - 10.1016/j.serj.2018.09.001
M3 - Article
AN - SCOPUS:85056314094
VL - 28
SP - 309
EP - 314
JO - Sustainable Environment Research
JF - Sustainable Environment Research
SN - 1022-7636
IS - 6
ER -