Photocatalytic degradation of paracetamol using aluminosilicate supported TiO2

The continuous growth of the pharmaceutical drug industry has escalated the problem of pharmaceutical waste disposal, and subsequent contamination of aquatic bodies. Paracetamol is one of the most prescribed and purchased drugs that has been widely detected in wastewater and surface water. The prese...

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Détails bibliographiques
Publié dans:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 82(2020), 10 vom: 01. Nov., Seite 2114-2124
Auteur principal: Jayasree, Pyla (Auteur)
Autres auteurs: Remya, Neelancherry
Format: Article en ligne
Langue:English
Publié: 2020
Accès à la collection:Water science and technology : a journal of the International Association on Water Pollution Research
Sujets:Journal Article Aluminum Silicates Waste Water titanium dioxide 15FIX9V2JP aluminosilicate 1U9X05245H Acetaminophen 362O9ITL9D Titanium D1JT611TNE
Description
Résumé:The continuous growth of the pharmaceutical drug industry has escalated the problem of pharmaceutical waste disposal, and subsequent contamination of aquatic bodies. Paracetamol is one of the most prescribed and purchased drugs that has been widely detected in wastewater and surface water. The present study investigated paracetamol degradation by photocatalytic treatment in a batch system using TiO2 supported on aluminosilicate recovered from waste LED panel (ATiO2). The prepared ATiO2 catalyst was characterized for morphology, elemental composition and crystallinity using scanning electron microscope (SEM) with electron dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD), respectively. ATiO2 was spherical in morphology with a predominance of the anatase phase of TiO2 and an average size of ∼15 nm. Subsequently, the effects of operating parameters, viz., initial paracetamol concentration (1-10 mg/L), catalyst dosage (0.5-4.0 g/L) and pH (4-10) on paracetamol degradation were investigated using central composite design (CCD). A polynomial model was developed to interpret the linear and interactive effect of operating parameters on the paracetamol degradation efficiency. About 99% degradation efficiency of paracetamol was obtained at optimum conditions (Initial paracetamol concentration ∼2.74 mg/L, ATiO2 dosage ∼2.71 g/L and pH ∼ 9.5). The mechanism of paracetamol degradation was adsorption on aluminosilicate and subsequent degradation by TiO2. ATiO2 could be effectively reused up to 3 cycles, with <5% decrease in the degradation efficiency
Description:Date Completed 04.12.2020
Date Revised 07.12.2022
published: Print
Citation Status MEDLINE
ISSN:0273-1223
DOI:10.2166/wst.2020.484