Article: Integration of photocatalysis with biological process for removal of tetracycline from water Journal: International Journal of Environmental Engineering (IJEE) 2020 Vol.10 No.4 pp.393 - 408 Abstract: A combined process coupling photocatalysis and biological treatment was investigated for the removal of tetracycline (TC). The experiments were carried out in a reactor operating in batch mode with internal UV irradiation. PC500 was used in tetracycline degradation at different initial pollutant concentrations. The degradation process is efficient at low concentrations and the kinetic degradation of TC in the presence of PC500 exhibited pseudo second order kinetics. The pH of the solutions had no effect on the photocatalytic degradation of the antibiotic. The optimal values of the UV intensity radiation and the PC500 concentrations were 25 W.m−2 and 1 g.L−1, respectively. The biodegradability study of the photocatalysed TC solutions based on the evaluation of BOD5, COD, TOC, BOD5/COD ratio and AOS showed a biodegradability of the obtained by-products for initial TC concentrations in the range 20 to 60 mg.L−1. Therefore, the coupling of photocatalysis and biological treatment is possible. Inderscience Publishers - linking academia, business and industry through research

Title: Integration of photocatalysis with biological process for removal of tetracycline from water

Authors: Lamia Khenniche; Farida Benissad-Aissani; Abdeltif Amrane; Katia Madi-Azegagh

Addresses: Laboratoire de Génie de l'Environnement, Département de Génie des Procédés, Faculté de Technologie, Université de Bejaia, Bejaia, Algeria ' Laboratoire de Génie de l'Environnement, Département de Génie des Procédés, Faculté de Technologie, Université de Bejaia, Bejaia, Algeria ' École Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France ' Laboratoire de Génie de l'Environnement (LGE), Université de Bejaia, Bejaia 06000, Algeria; Faculté de Technologie, Université Saad Dahlab de Blida 1, Route de Soumaa, BP 270 Blida 09100, Algeria

Abstract: A combined process coupling photocatalysis and biological treatment was investigated for the removal of tetracycline (TC). The experiments were carried out in a reactor operating in batch mode with internal UV irradiation. PC500 was used in tetracycline degradation at different initial pollutant concentrations. The degradation process is efficient at low concentrations and the kinetic degradation of TC in the presence of PC500 exhibited pseudo second order kinetics. The pH of the solutions had no effect on the photocatalytic degradation of the antibiotic. The optimal values of the UV intensity radiation and the PC500 concentrations were 25 W.m⁻² and 1 g.L⁻¹, respectively. The biodegradability study of the photocatalysed TC solutions based on the evaluation of BOD5, COD, TOC, BOD5/COD ratio and AOS showed a biodegradability of the obtained by-products for initial TC concentrations in the range 20 to 60 mg.L⁻¹. Therefore, the coupling of photocatalysis and biological treatment is possible.

Keywords: photocatalysis; antibiotic; modelling; kinetics; mineralisation; biodegradability; PC500; degradation; tetracycline; removal; combined process.

DOI: 10.1504/IJEE.2020.110471

International Journal of Environmental Engineering, 2020 Vol.10 No.4, pp.393 - 408

Accepted: 08 Jun 2020
Published online: 20 Oct 2020 *

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Title: Integration of photocatalysis with biological process for removal of tetracycline from water

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