The presence of pollutants in water systems is a universal threat. In this study, ZnO based materials and enzyme hybrid materials were evaluated for their ability to remove six emerging wastewater pollutants (namely diclofenac, naproxen, iopamidol, imidacloprid, bisphenol A and 2,4-dichlorophenol). These materials were tested in their free form as well as supported on poly(styrene-co-maleic anhydride) (SMA) nanofibre mats fabricated through the process of electrospinning. The SMA nanofibres were fully characterized using Attenuated Total Reflectance-Fourier Transform InfraRed spectroscopy (ATR-FTIR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Degradation profiles of the activity of these and the Ce-doped ZnO materials in their free form showed good removal efficacy of all the contaminants even in a mixed matrix environment which mimics a real scenario. By combining Soybean peroxidase (SBP) attached to the SMA nanofibres and oxide nanoparticles into the polymer nanofibers, a synergic effect was observed and it was particularly marked for the Ce-doped ZnO in wastewater treatment. Supporting these materials on the SMA nanofibre mats did not compromise on the effectiveness of the materials. These supported materials offer a potentially easier and more practical application of the materials in water treatment applications.

ZnO-based materials and enzymes hybrid systems as highly efficient catalysts for recalcitrant pollutants abatement

Sarro, Marco;Laurenti, Enzo;Paganini, Maria Cristina;Calza, Paola
2018-01-01

Abstract

The presence of pollutants in water systems is a universal threat. In this study, ZnO based materials and enzyme hybrid materials were evaluated for their ability to remove six emerging wastewater pollutants (namely diclofenac, naproxen, iopamidol, imidacloprid, bisphenol A and 2,4-dichlorophenol). These materials were tested in their free form as well as supported on poly(styrene-co-maleic anhydride) (SMA) nanofibre mats fabricated through the process of electrospinning. The SMA nanofibres were fully characterized using Attenuated Total Reflectance-Fourier Transform InfraRed spectroscopy (ATR-FTIR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Degradation profiles of the activity of these and the Ce-doped ZnO materials in their free form showed good removal efficacy of all the contaminants even in a mixed matrix environment which mimics a real scenario. By combining Soybean peroxidase (SBP) attached to the SMA nanofibres and oxide nanoparticles into the polymer nanofibers, a synergic effect was observed and it was particularly marked for the Ce-doped ZnO in wastewater treatment. Supporting these materials on the SMA nanofibre mats did not compromise on the effectiveness of the materials. These supported materials offer a potentially easier and more practical application of the materials in water treatment applications.
2018
334
2530
2538
https://www.sciencedirect.com/science/article/pii/S1385894717320685?via=ihub
Electrospinning, Photocatalysis, ZnO, Emerging pollutants, Wastewater
Sarro, Marco; Gule, Nonjabulo P.; Laurenti, Enzo; Gamberini, Roberta; Paganini, Maria Cristina; Mallon, Peter E.; Calza, Paola
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1687274
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