Enzymatic Degradation of Micropollutants in Water: the Case of Tetracycline Degradation by Enzymes Immobilized on Monoliths - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Chemical Engineering Transactions Année : 2020

Enzymatic Degradation of Micropollutants in Water: the Case of Tetracycline Degradation by Enzymes Immobilized on Monoliths

Dégradation enzymatique de micropolluants dans l'eau: dégradation de la tétracycline par des enzymes immobilisées dans des monolithes

Résumé

Enzymatic monolithic reactors were applied for the degradation of micropollutants through flow-through reactor configuration. Silica monoliths with uniform macro-/mesoporous structures (20 µm and 20 nm macro-and mesopores diameters) high porosity (83%) and high surface area (370 m2 g-1) were prepared. The monoliths were cladded in steel tubing and laccase from Trametes versicolor was immobilized by covalent grafting. Enzymatic monoliths presented a very good oxidation activity and were used for the degradation of tetracycline (TC) in aqueous solutions in a tubular plug reactor with recycling configuration. TC degradation efficiency was found to be 40-50 % after 5 h of reaction at pH 7. The immobilized laccase on silica monoliths exhibited high operational stability during 75 hours of sequential operation.
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Dates et versions

hal-02930288 , version 1 (13-11-2020)

Identifiants

Citer

Sher Ahmad, Wassim Sebai, M-P. Belleville, Nicolas Brun, Anne Galarneau, et al.. Enzymatic Degradation of Micropollutants in Water: the Case of Tetracycline Degradation by Enzymes Immobilized on Monoliths. Chemical Engineering Transactions, 2020, ⟨10.3303/CET2079068⟩. ⟨hal-02930288⟩
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