Abstract: The degradation of
cypermethrin in insecticide Ripcord 5EC by photolysis has been done. Photolysis
of cypermethrin was carried out by using UV light (λ 365 nm) with the addition
of different catalyst amount including 20 mg TiO2/Zeolit​​; 0.8 mg TiO2-anatase
and 19.2 mg zeolites. The remaining cypermethrin in the solution after
illumination was analyzed by
spectrophotometer UV-Vis at 265 nm wavelength. Results of the experiment
showed that only 11 % of cypermethrin was reduced from its solution without the
addition of the catalysts in 120 minutes illmunitation. Interestingly, when the
catalysts added into the solution of cypermethrin in the same period of
illumination time, these following result observed respectively for zeolite,
TiO2 anatase and TiO2/zeolite were 19 %, 28 % and 64 %. It can be concluded
that by means the combination of the two catalysts, photocatalystic behavior
can be improved drammatically.
Keywords: photolysis,
degradation, cypermethrin, TiO2/zeolite
Penulis: Lola Kumala Sari,
Safni, dan Zilfa
Kode Jurnal: jpkimiadd120011
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