STUDY OF SOME PARAMETERS RESPONSIBLE FOR GLYPHOSATE HERBICIDE MINERALIZATION BY ELECTRO - FENTON PROCESS

Thanh Son Le

Abstract


Glyphosate (C3H8NO3P) is a highly effective broad-spectrum, post-emergence, non- selective organophosphate herbicide and commonly applied in Viet Nam. The removal of glyphosate in aqueous solution has been investigated by electro - fenton process which is based on the continuous production of OH radicals by reaction between Fe2+ catalyst and H2O2 electrochemical generated on cathode. The carbon felt (60 cm2) and Pt gauze (45 cm2) were used as cathode and anode of the electro-fenton system, successively. Monitoring the total organic carbon (TOC) during the electrolysis proved that pH, current intensity, electrolysis time and catalyst concentration influenced the glyphosate mineralization efficiency. At the optimal conditions: [Fe2+] = 0.1 mM; pH = 3; [Na2SO4] = 0.05M ;  I = 0.5A and the compressed air was bubbled through the solutions, the experiment results showed that 84.4 % Glyphosate was mineralized to CO2, H2O and inorganic acid after 50 min.


Keywords


electro-fenton, glyphosate, felt carbon, mineralization.

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DOI: https://doi.org/10.15625/2525-2518/55/4C/12158 Display counter: Abstract : 83 views. PDF : 68 views.

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Published by Vietnam Academy of Science and Technology