Enhancing chromium removal and recovery from industrial wastewater using sustainable and efficient nanomaterial: A review

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 263, P. 115231 - 115231

Published: July 8, 2023

Water contamination can be detrimental to the human health due higher concentration of carcinogenic heavy metals such as chromium (Cr) in wastewater. Many traditional methods are being employed wastewater treatment plants for Cr removal control environmental impacts. Such include ion exchange, coagulation, membrane filtration, and chemical precipitation microbial degradation. Recent advances materials science green chemistry have led development nanomaterial that possess high specific surface areas multiple functions, making them suitable removing from Literature shows most efficient, effective, clean, long-lasting approach involves adsorbing onto nanomaterial. This review assesses wastewater, advantages disadvantages using remove potential negative impacts on health. The latest trends developments strategies adsorption also explored present review.

Language: Английский

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Tanning Wastewater Sterilization in the Dark and Sunlight Using Psidium guajava Leaf-Derived Copper Oxide Nanoparticles and Their Characteristics

ACS Omega, Journal Year: 2023, Volume and Issue: 8(42), P. 39680 - 39689

Published: Oct. 9, 2023

Employing Psidium guajava (P. guajava) extract from leaves, copper oxide nanoparticles (CuO NPs), likewise referred to as cupric and renowned for their sustainable harmless biogenesis, have the possibility of being useful purification pollutants well medicinal purposes. The current study examined generated CuO NPs physical qualities by using ultraviolet-visible (UV) spectroscopy. distinctive peak at 265 nm NP production was originally seen. Additionally, an X-ray diffraction (XRD) investigation conducted identify crystalline arrangement produced NPs, a Fourier transform infrared (FTIR) spectroscopy examination performed validate functional compounds NPs. synthesized nanoparticles' catalytic activities (wastewater treatment) were analyzed in dark sunlight modes. properties total darkness resulted 64.21% discoloration, whereas exposure sunshine increased nanomaterials' catalyst performance 92.31%. By lowering Cr(VI), Ni, Pb, Co, Cd sewage proportions 91.4, 80.8, 68.26, 73.25, 72.4% accordingly, demonstrated its effectiveness nanosorbent. Total suspended solids (TSS), dissolved (TDS), chemical oxygen demand (COD), biological (BOD), conductance all successfully reduced nanotreatment tanning effluents, with proportion reductions 93.24, 88.62, 94.21, 87.5, 98.3%, correspondingly.

Language: Английский

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Green Synthesis of Zinc Oxide Nanoparticles Using an Aqueous Extract of Punica granatum for Antimicrobial and Catalytic Activity

Journal of Functional Biomaterials, Journal Year: 2023, Volume and Issue: 14(4), P. 205 - 205

Published: April 7, 2023

The peel aqueous extract of Punica granatum was utilized to fabricate zinc oxide nanoparticles (ZnO-NPs) as a green approach. synthesized NPs were characterized by UV-Vis spectroscopy, Fourier transform infrared (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning microscopy, which attached an energy dispersive (SEM-EDX). Spherical, well arranged, crystallographic structures ZnO-NPs formed with sizes 10-45 nm. biological activities ZnO-NPs, including antimicrobial catalytic activity for methylene blue dye, assessed. Data analysis showed that the against pathogenic Gram-positive Gram-negative bacteria, unicellular fungi, observed occur in dose-dependent manner, displaying varied inhibition zones low minimum inhibitory concentration (MIC) values ranges 6.25-12.5 µg mL-1. degradation efficacy (MB) using is dependent on nano-catalyst concentration, contact time, incubation condition (UV-light emission). maximum MB percentages 93.4 ± 0.2% attained at 20 mL-1 after 210 min presence UV-light. there no significant difference between 210, 1440, 1800 min. Moreover, high stability degrade five cycles decreasing 4%. Overall, P. granatum-based are promising tools inhibit growth microbes UV-light emission.

Language: Английский

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The Fate and Occurrence of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes during Advanced Wastewater Treatment and Disinfection: A Review

Water, Journal Year: 2023, Volume and Issue: 15(11), P. 2084 - 2084

Published: May 31, 2023

Antimicrobial resistance (AMR) is a serious problem for modern society, not only associated with clinical environments, but also the natural environment. Conventional wastewater treatment plants (WWTPs) are important nodes dissemination of antibiotic to aquatic environment since they reservoirs antibiotic-resistant bacteria (ARB), genes (ARGs), and residues. WWTPs designed remove these determinants from wastewater, as result, present in treated effluent, leading environmental public health concerns regarding disposal reuse. Additional treatments combined conventional can be barriers spread AMR In order understand effect methods on removal ARB ARGs, an extensive bibliographic study was conducted. This review summarizes efficiency disinfection methods, tertiary treatment, advanced oxidation processes (AOPs) ARGs wastewater. context revised Urban Wastewater Treatment Directive 91/271/EEC, further studies needed potential AOPs full-scale, offer great low formation toxic by-products compared methods.

Language: Английский

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Recent Advances in Copper-Based Materials for Sustainable Environmental Applications

Sustainable Chemistry, Journal Year: 2023, Volume and Issue: 4(3), P. 246 - 271

Published: July 15, 2023

In recent years, copper-based nanomaterials have gained significant attention for their practical applications due to cost-effectiveness, thermal stability, selectivity, high activity, and wide availability. This review focuses on the synthesis extensive of copper in environmental catalysis, addressing knowledge gaps pollution management. It highlights advancements using remediation heavy metals, organic pollutants, pharmaceuticals, other contaminants. Also, it will be helpful young researchers improving suitability implementing correctly establish achieve sustainable goals remediation.

Language: Английский

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Metallic nanoparticles unveiled: Synthesis, characterization, and their environmental, medicinal, and agricultural applications

Talanta, Journal Year: 2024, Volume and Issue: 280, P. 126790 - 126790

Published: Aug. 29, 2024

Language: Английский

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Unveiling sustainable, greener synthesis strategies and multifaceted applications of copper oxide nanoparticles

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1305, P. 137788 - 137788

Published: Feb. 11, 2024

Language: Английский

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Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C₃N₄/ZnO Ternary Composites

ACS Omega, Journal Year: 2024, Volume and Issue: 9(14), P. 16187 - 16195

Published: March 26, 2024

Methylene blue (MB) is a toxic contaminant present in wastewater. Here, we prepared various composites of graphene oxide (GO) with graphitic carbon nitride (g-C3N4) and zinc (ZnO) for the degradation MB. In comparison to ZnO (22.9%) g-C3N4/ZnO (76.0%), ternary GO/g-C3N4/ZnO showed 90% photocatalytic MB under light source after 60 min. The experimental setup parameters were varied examine process effectiveness degradation. Based on results experiments, proposed that explains roles GO, ZnO, g-C3N4 improving efficacy newly was explored. Notably, nanocomposite's surface uniformly covered nanorods. images samples clearly demonstrated porous nature photocatalysts, even being mixed composite retained layered structure original material. catalyst's plausibly enhanced contaminants. high-clarity production synthesis protocol later validated by absence any trace contamination energy-dispersive X-ray spectroscopy (EDS) results. composition elements their spectra revealed EDS nanorods, g-C3N4/ZnO, GO/g-C3N4/ZnO. outcomes indicated nanocomposites highly uncontaminated contained all necessary facilitate transformative process. this experiment could be applied at large scale, thus proving photocatalysts removal dyes.

Language: Английский

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Advanced nanomaterials and dendrimers in water treatment and the recycling of nanomaterials: A review

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112643 - 112643

Published: March 29, 2024

Herein an extensive review of the use nanomaterials and dendrimers for water treatment is presented. The included in tackling various challenges, including achieving dye removal, antibacterial effects, photocatalysis, heavy metal nanomaterial recycling, nanowaste removal. highlights existing literature bottlenecks suggests potential remedies, with a focus on availability low-cost, recyclable, bimetallic nanomaterials. Moreover, significance taking into account practical sample collection analysis, such as industrial effluents samples analysis. provides valuable insights advances development nanomaterial-based technologies by critically examining research.

Language: Английский

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Exploring the Antimicrobial, Antioxidant, and Antiviral Potential of Eco-Friendly Synthesized Silver Nanoparticles Using Leaf Aqueous Extract of Portulaca oleracea L.

Pharmaceuticals, Journal Year: 2024, Volume and Issue: 17(3), P. 317 - 317

Published: Feb. 28, 2024

Herein, the prospective applications of green fabricated silver nanoparticles (Ag-NPs) within biomedical field were investigated. The leaf aqueous extract Portulaca oleracea L., a safe, cheap, and method, was used to fabricate Ag-NPs. maximum plasmon resonance synthesized NPs has appeared at 420 nm. various biomolecules present in plant assemble spherical Ag-NPs with sizes 5–40 nm analyzed using Fourier transform infrared transmission electron microscopy. Ag major content formed an atomic percent 54.95% weight 65.86%, as indicated by EDX. crystallographic structure confirmed diffraction X-ray. dynamic light scattering exhibits homogeneity mono-dispersity nature polydispersity index 0.37 colloidal fluid zeta potential value –36 mV. exhibited promising antimicrobial efficacy toward prokaryotic eukaryotic pathogenic microorganisms low MIC values 12.5 µg mL−1 6.25 mL−1, respectively. Additionally, P. oleracea-formed showed optimistic antioxidant activity assessed DPPH H2O2 assay methods highest scavenging percentages 88.5 ± 2.3% 76.5 1.7%, respectively, concentration 200 mL−1. Finally, biosynthesized high antiviral properties hepatitis A virus Cox-B4 inhibition 79.16 0.5% 73.59 0.8%, Overall, additional research is essential explore Ag-NP-based for human health. In current investigation use antimicrobial, antioxidant, agents protect against microbes, degenerative diseases caused oxidative stresses, deadly viruses recommended.

Language: Английский

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