Wet Peroxide Oxidation of Paracetamol Using Acid Activated and Fe/Co-Pillared Clay Catalysts Prepared from Natural Clays

Wet Peroxide Oxidation of Paracetamol Using Acid Activated and Fe/Co-Pillared Clay Catalysts Prepared from Natural Clays

Many pharmaceuticals have been recently identified at trace levels worldwide in the aquatic environment. Among them, the highly consumed paracetamol (PCM), an analgesic and antipyretic drug, is largely being accumulated in the aquatic environment due to inefficient removal by conventional sewage tre...

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Bibliographic Details
Published in:Catalysts 2019-09, Vol.9 (9), p.705
Main Authors: Santos Silva, Adriano, Seitovna Kalmakhanova, Marzhan, Kabykenovna Massalimova, Bakytgul, G. Sgorlon, Juliana, Jose Luis, Diaz de Tuesta, T. Gomes, Helder
Format: Article
Language:eng
Subjects:
Acids
Activated clay
advanced oxidation process
Analgesics
Aquatic environment
Catalysts
Catalytic activity
Chemical reactions
Clay
Cobalt
Contaminants
contaminants of emerging concern
environmental catalysis
Iron
Nitrogen
Oxidation
Pharmaceuticals
Pollutants
Quartz
Sewage treatment plants
wastewater treatment
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Summary:Many pharmaceuticals have been recently identified at trace levels worldwide in the aquatic environment. Among them, the highly consumed paracetamol (PCM), an analgesic and antipyretic drug, is largely being accumulated in the aquatic environment due to inefficient removal by conventional sewage treatment plants. This work deals with the treatment of PCM, used as a model pharmaceutical contaminant of emerging concern, by catalytic wet peroxide oxidation using clay-based materials as catalysts. The catalysts were prepared from natural clays, extracted from four different deposits using acid-activated treatment, calcination, and pillarization with Fe and Co. Pillared clays show the highest catalytic activity owing to the presence of metals, allowing to remove completely the PCM after 6 h under the following operating conditions: CPCM = 100 mg L−1, CH2O2 = 472 mg L−1, Ccat = 2.5 g L−1, initial pH = 3.5 and T = 80 °C. The prepared materials presented high stability since leached iron was measured at the end of reaction and found to be lower than 0.1 mg L−1.
ISSN:2073-4344
2073-4344