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Application of microalgal-ZnO-NPs for reusing polyester/cotton blended fabric wastes after modification by cellulases enzymes

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Waste Disp.sal and Sustainable Energy 2023年第4期5卷 471-482页

作者： Osama M.Darwesh Naser G.Al-Balakocy Ahmed Ghanem Ibrahim A.Matter Agricultural Microbiology Department National Research Centre33 EL-Buhouth St.DokkiCairo12622Egypt Protenic and Manmade Fibers Department National Research CentreDokkiCairo12622Egypt Packaging Materials Department National Research CentreCairo12622Egypt

Polyester/cotton(PET/C)blended fabric wastes are produced daily in huge amounts,which constitutes an economic loss and an environmental threat if it is not reused *** textile waste recycling technologies put much effort into developing fabric materials with unique properties,such as bioactivity or new optical goods based on modern technologies,esp.cially *** this study,zinc oxide nanoparticles(ZnO-NPs)were biosynthesized using the aqueous extract of dunaliella *** immobilized on PET/C waste fabrics after enzymatically activated with *** produced dunaliella-ZnO-NPs(10–20 nm with a sp.erical shape)were characterized by High-resolution transmission electron microscopy(HRTEM),Fourier-transform infrared sp.ctroscopy(FTIR),X-Ray diffraction analysis(XRD),and Scanning electron microscopy-energy disp.rsive X-ray analyzer(SEM-EDAX),and some functional groups,such as CH,CO,NH,and CN(due to the presence of carboxyl,proteins and hydroxyl groups),were detected,revealing the biosynthesis of *** analysis showed that the resulting ZnO-NPS had potent antimicrobial effects,Ultraviolet(UV)protection capabilities,and no cytotoxic effects on the normal human fibroblast cell line(BJ1).On the other hand,enzymatic treatments of PET/C fabric waste with cellulases enhanced the immobilization of biosynthetic nanoparticles on their *** PET/C fabrics loaded with dunaliella-ZnO-NPs showed antibacterial and UV protection capabilities making them an eco-friendly and cost-effective candidate for numerous *** applications can include the manufacture of active packaging devices,wastewater treatment units,and many other environmental applications.

关键词： Wastewater remediation Polyester/cotton wastes Cytotoxicity Microalgal-ZnO-NPs dunaliella sp. Microbial nanotechnology

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