Degradation of Paracetamol Adsorbed on Inorganic Supports Under UV Irradiation

PATRICIO FRANCISCO BAEZA CHANDIA, Paulina Aballay, Camila Matus, Esteban Camú, M. Fernanda Ramirez, Johanna Eyzaguirre, Juan Ojeda

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The purpose of this piece of work is to study the process of adsorption of paracetamol on activated carbon, silica and alumina and their degradation using UV radiation. The results demonstrate a higher adsorption of paracetamol on alumina and activated carbon, while a minor value was observed in the case of silica. The H-bonding and π-stacking interactions between paracetamol and supports can be explained by the variation in the adsorption capacity values. When the paracetamol adsorbed was irradiated with two different UV irradiance values (59.78 mW cm −2 and 119.56 mW cm −2 ) for 120 min, the higher degradation percentage was observed on activated carbon with a value of 79%. In the case of alumina and silica, the maximum percentages obtained were 65% and 77%, respectively. The incorporation of H 2 O 2 in the reaction medium increases the rate of degradation, mainly at higher irradiance, reaching the maximum values in less time.

Original languageEnglish
Article number34
JournalWater, Air, and Soil Pollution
Volume230
Issue number2
DOIs
StatePublished - 1 Feb 2019
Externally publishedYes

Keywords

  • Adsorption
  • Emerging contaminant
  • Inorganic supports
  • Paracetamol
  • UV irradiation

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