Artículo
Paracetamol mineralization by Photo Fenton process catalyzed by a Cu/Fe- PILC under circumneutral pH conditions
Autor
Hurtado Alva, María de Lourdes; 368065
ROMERO ROMERO, RUBI; 121454
MENDOZA ZEPEDA, ARISBEHT; 553229
Brewer, Sharon;#0000-0002-4577-3539
Donkor, Kingsley;x1350388
GOMEZ ESPINOSA, ROSA MARIA; 121920
NATIVIDAD RANGEL, REYNA; 87755
Hurtado Alva, María de Lourdes
ROMERO ROMERO, RUBI
MENDOZA ZEPEDA, ARISBEHT
Brewer, Sharon
Donkor, Kingsley
GOMEZ ESPINOSA, ROSA MARIA
NATIVIDAD RANGEL, REYNA
Institución
Resumen
This study presents an iron-pillared clay (Fe-PILC) ion-exchanged with copper (Cu/Fe-PILC), as an efficient catalyst to conduct the mineralization of paracetamol through photo-Fenton process at near to neutral pH without precipitation of Fe complexes and without adding any chemicals to modify the initial pH. The specific surface area of the catalyst was of 110m2 g−1 and with the following phases FeO, Fe3O4, Cu2O, CuO determined by XPS analyses. Around 80% of mineralization was reached either by conducting the process at acidic and circumneutral pH conditions, and the efficiency was not significantly higher at pH=2.7. The intermediate reaction products generated at both pH conditions essayed and detected by LC–MS were hydroquinone, acetamide and oxamic acid. Catalyst Cu/Fe-PILC showed an iron leaching of about 3% after reaction while the reusability of the catalyst involved a decrease in mineralization of only 3% under circumneutral conditions. The final TOC of about 20% can be ascribed to the presence of acetamide that was found to be the most reluctant towards oxidation. CONACYT 269093 PRODEP (511-6/178590) CONACYT (Estancia sabática) 266149