Potentialities of active membranes with immobilized laccase for Bisphenol A degradation.

Autor: Barrios-Estrada C; Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, NL, CP 64849, Mexico., Rostro-Alanis MJ; Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, NL, CP 64849, Mexico., Parra AL; Insitut Européen des Membranes (IEM), UMR 5635 (CNRS-ENSCM-UM'), Université de Montpellier, Place Eugène Battaillon, 34095 Montpellier, France., Belleville MP; Insitut Européen des Membranes (IEM), UMR 5635 (CNRS-ENSCM-UM'), Université de Montpellier, Place Eugène Battaillon, 34095 Montpellier, France., Sanchez-Marcano J; Insitut Européen des Membranes (IEM), UMR 5635 (CNRS-ENSCM-UM'), Université de Montpellier, Place Eugène Battaillon, 34095 Montpellier, France., Iqbal HMN; Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, NL, CP 64849, Mexico. Electronic address: hafiz.iqbal@my.westminster.ac.uk., Parra-Saldívar R; Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, NL, CP 64849, Mexico. Electronic address: r.parra@itesm.mx.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2018 Mar; Vol. 108, pp. 837-844. Date of Electronic Publication: 2017 Oct 31.
DOI: 10.1016/j.ijbiomac.2017.10.177
Abstrakt: Herein, we report the development of immobilized laccase based membrane bioreactor as a novel bio-catalytic system for the degradation of emerging endocrine disruptor i.e., Bisphenol A. Two laccase forms i.e. (1) in-house isolated and purified from an indigenous white-rot fungi Pycnoporus sanguineus (CS43) and (2) Trametes versicolor (commercial laccase from Sigma-Aldrich ® ) were immobilized on a multi-channel ceramic membrane (1.4μm in diameter) using 4% glutaraldehyde as a cross-linking agent. The immobilization yield and bisphenol A degradation activities of immobilized laccases were recorded at various pH levels. The surface topographies of immobilized-laccase membranes were accessed by scanning electron microscopy. In this study, 100% degradation of bisphenol A (20mg/L) was achieved in less than 24h in the presence of laccase from P. sanguineus (CS43) (620.55±14.85U/L) and T. versicolor (620.55±14.85U/L). The enzymes showed an optimal activity at pH 5 and 5.4 with a degradation rate of 204.8±1.8 and 79.0±0.1μmol/min/U for P. sanguineus (CS43) and T. versicolor, respectively. In conclusion, the highest immobilization of unit per square centimeter and efficient degradation potentiality strongly recommend the newly developed immobilized laccase based membrane bioreactor as a novel tool to tackle emerging contaminants degradation issues.
(Copyright © 2017 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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