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Research Article Open access CC BY 4.0

Degradation of Amoxicillin in Water by Fenton, Photo-fenton and Photocatalysis Using Copper Oxide

Kambire Ollo, Manouan Wedjers Max Robin, Kouyaté Amadou, Kouakou Yao Urbain, Berté Mohamed, Gnamba Corneil Quand-Même, Koffi Konan Sylvestre, Kimou Kouakou Jocelin

Asian Journal of Chemical Sciences · pp. 84–97 · Published 30 Oct 2024

10.9734/ajocs/2024/v14i6336

Abstract

In recent years, the presence of drug residues in water has become a major environmental issue. Among these pollutants is amoxicillin. Our aim is to propose effective methods for decontaminating wastewater containing amoxicillin. This study was carried out using the chemical oxygen demand method. This work has shown that hydroxyl radicals can effectively degrade amoxicillin. The rate of hydroxyl radical production from hydrogen peroxide and iron (II) ions increases in the presence of sunlight. Amoxicillin oxidation is optimal at a pH of 3 and a [H2O2]/[Fe2+] ratio of 13.33. Amoxicillin degradation is faster at low concentrations than at high concentrations. The oxidation of amoxicillin by photo-Fenton results in degradation rates of up to 99%. A study of the adsorption of amoxicillin on copper oxides showed that amoxicillin adsorbs weakly to the amoxicillin surface, with an adsorption rate of 17%. However, in the presence of amoxicillin, hydrogen peroxide and sunlight, degradation rates of up to 99% were obtained. This work has shown that the degradation of amoxicillin is better with solar photo Fenton and solar photocatalysis in the presence of copper oxide than with the Fenton process.

Fenton photo-Fenton amoxicillin photocatalysis degradation sunlight

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