Catalytic degradation of wastewater from the textile and tannery industries by green synthesized hematite (α-Fe2O3) and magnesium oxide (MgO) nanoparticles

Current Research in Biotechnology, Journal Year: 2021, Volume and Issue: 3, P. 29 - 41

Published: Jan. 1, 2021

The textile and leather industry produces large amounts of wastewater that contains high levels chemicals other pollutants, incorporated during the processing stages. We evaluated efficacy green synthesized iron oxide (α-Fe2O3) magnesium (MgO) nanoparticles (NPs) for treatment crude tannery effluents. Green synthesis α-Fe2O3-NPs MgO-NPs was conducted using newly obtained Aspergillus carbonarious strain D-1. optimization physicochemical parameters biosynthesis NPs, including incubation periods, contact time, pH, temperature, precursor concentrations, were assessed. characterization NPs under optimal conditions UV–visible spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD) patterns, dynamic light scattering (DLS), Fourier Transform Infrared (FT-IR) Spectroscopy. concentration efficient textile/tannery decolorization determined to be 100 mg after eight hours four MgO-NPs. Under these conditions, chemical oxygen deman (COD), pH value, total dissolved solids (TDS), suspended (TSS), conductivity greatly reduced as compared control wastewater. GC–MS analysis NPs-treated revealed some major compounds diminished, bio-transformed, or completely degraded. MgO α-Fe2O3 exhibited a capacity reduce COD by 97.5% 95.0%, respectively. Hematite higher removal TDS, TSS, hematite capacities remove Cr, with redcing Cr 87.06 reducing 75.4%. more effective than at removing Pb, Ni, Cd.

Language: Английский

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Multifunctional Silver Nanoparticles Based on Chitosan: Antibacterial, Antibiofilm, Antifungal, Antioxidant, and Wound-Healing Activities

Journal of Fungi, Journal Year: 2022, Volume and Issue: 8(6), P. 612 - 612

Published: June 8, 2022

The purpose of this study is to create chitosan-stabilized silver nanoparticles (Chi/Ag-NPs) and determine whether they were cytotoxic also their characteristic antibacterial, antibiofilm, wound healing activities. Recently, the development an efficient environmentally friendly method for synthesizing metal based on polysaccharides has attracted a lot interest in field nanotechnology. Colloidal Chi/Ag-NPs are prepared by chemical reduction ions presence Chi, giving Chi/Ag-NPs. Physiochemical properties determined Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), scanning with energy-dispersive (SEM-EDX) analyses. TEM pictures indicate that generated nearly spherical shape thin chitosan covering around Ag core had sizes range 9-65 nm. In vitro antibacterial activity was evaluated against Staphylococcus aureus Pseudomonas aeruginosa resazurin-mediated microtiter plate assay. highest observed lowest concentration Chi/Ag-NPs, which 12.5 µg/mL both bacterial strains. Additionally, showed promising antifungal features Candida albicans, Aspergillus fumigatus, terreus, niger, where inhibition zones 22, 29, 20, 17 mm, respectively. Likewise, revealed potential antioxidant 92, 90, 75% at concentrations 4000, 2000, 1000 µg/mL, IC50 261 µg/mL. Wound results illustrated fibroblasts advanced toward opening close scratch roughly 50.5% after 24-h exposure greatly accelerating process. conclusion, nanocomposite AgNPs successfully exhibited antifungal, antioxidant, activities can be used medical field.

Language: Английский

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Ecofriendly synthesis of silver nanoparticles using Kei-apple (Dovyalis caffra) fruit and their efficacy against cancer cells and clinical pathogenic microorganisms

Arabian Journal of Chemistry, Journal Year: 2022, Volume and Issue: 15(7), P. 103927 - 103927

Published: April 21, 2022

Green fabrication has become a safe approach for producing nanoparticles. Plant-based biogenic synthesis of silver nanoparticles (AgNPs) emerged as possible alternative to traditional chemical production. In this paper, we provide low-cost, green AgNPs utilizing using Kei-apple (Dovyalis caffra) fruit extract. Ultraviolet–visible (UV–Vis) spectroscopy, Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), X-Ray Diffraction (XRD), Scanning-Electron Microscope (SEM), and Dynamic Light Scattering (DLS) analyses were used characterize produced AgNPs. The formation was shown have surface resonance peak 415 nm in UV–visible spectra, FTIR spectra verified the participation biological molecules Synthesis TEM revealed that biosynthesized mostly spherical form, with size range 12–53 nm. XRD diffractogram demonstrate face cubic centre (fcc) character Excellent anticancer activity recorded where more than 80% Prostate Cancer (PC-3) cell lines inhibited by 100–150 µg/mL AgNPs, while 38% only AgNO3 55.62% D. caffra extract at 150 µg/mL. Destructions PC-3 observed result exposed followed extract, minor alterations AgNO3. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) scavenging three fold 100 indicating good antioxidant activity. inhibitory against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans Aspergillus fumigatus inhibition diameter zone 28.22 ± 0.25 mm, 23.21 0.35 27.25 0.03 28.40 0.15 29.23 0.44 9.52 0.5 respectively compared fruits considered promising source multi-biological functions.

Language: Английский

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Antibacterial Activity of Green Synthesized Silver Nanoparticles Using Lawsonia inermis Against Common Pathogens from Urinary Tract Infection

Applied Biochemistry and Biotechnology, Journal Year: 2023, Volume and Issue: 196(1), P. 85 - 98

Published: April 26, 2023

Abstract New and creative methodologies for the fabrication of silver nanoparticles (Ag-NPs), which are exploited in a wide range consumer items, significant interest. Hence, this research emphasizes biological approach Ag-NPs through Egyptian henna leaves ( Lawsonia inermis Linn.) extracts analysis prepared Ag-NPs. Plant extract components were identified by gas chromatography mass spectrometry (GC-mass). The analyses carried out UV–visible (UV–Vis), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning (SEM), Fourier transform infrared (FTIR) analysis. UV–Vis reveals that have maximum peak at 460 nm visible light. Structural characterization recorded peaks corresponded to Bragg’s diffractions nano-crystal, with average crystallite sizes varying from 28 60 nm. Antibacterial activities examined, it is observed all microorganisms very sensitive biologically synthesized

Language: Английский

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Baker’s Yeast-Mediated Silver Nanoparticles: Characterisation and Antimicrobial Biogenic Tool for Suppressing Pathogenic Microbes

BioNanoScience, Journal Year: 2022, Volume and Issue: 12(4), P. 1220 - 1229

Published: Aug. 18, 2022

Language: Английский

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