REMOVAL OF ISOPROPYL ALCOHOL FROM WASTEWATER USING MODIFIED BENTONITE BY Fe, Cu, AND Fe-Cu
Original scientific paper
DOI:
https://doi.org/10.2298/CICEQ241227016MKeywords:
Isopropyl alcohol oxidation, Pillared clays, Cu, Fe, Fe-CuAbstract
Catalysts based on purified bentonite (Be) pillared with Fe3+ (BeFe), Cu2+ (BeCu), and Fe-Cu (BeFe/Cu) were synthesized from Algerian bentonite and used to treat isopropyl alcohol (IPA) by catalytic wet peroxide oxidation (CWPO) with H2O2 at 298 K. The BeFe showed higher activity than the BeFe/Cu one for IPA removal, although the second was more active for H2O2 decomposition. The reaction kinetics were examined with both catalysts using the pseudo-first-order reaction model. The mechanism of H2O2 decomposition was known through different values of apparent activation energy (Ea) were determined from the Arrhenius equation 46 kJ/mol for BeFe with abundant formation of •OH radicals and
67 kJ/mol for BeFe/Cu with mainly production of O2 which has a low oxidation capacity at 298 K.
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