Photocatalytic degradation of Congo red dye using zinc oxide nanoparticles prepared using Carica papaya leaf extract

Materials Today Sustainability, Journal Year: 2023, Volume and Issue: 22, P. 100339 - 100339

Published: Feb. 8, 2023

Language: Английский

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Environmental remediation by hydroxyapatite: Solid state synthesis utilizing waste chicken eggshell and adsorption experiment with Congo red dye

Journal of Saudi Chemical Society, Journal Year: 2023, Volume and Issue: 27(5), P. 101690 - 101690

Published: July 18, 2023

This study reports the adsorption efficacy of hydroxyapatite (HAp) for removing Congo Red (CR) dye from aqueous solution. HAp was synthesized utilizing chicken eggshell as a precursor Ca source. Solid state synthesis method implemented which comprised calcination at 950°C (E-HAp950). XRD analysis confirmed formation bi-phasic with 15.5% β-TCP. Elemental composition evaluated by XPS and EDX analysis. FESEM revealed particles are plate spherical shaped also TEM images. DLS particle size, zeta potential, BET surface area point zero charge were evaluated. Adsorption E-HAp950 CR batch experiment. Maximum capacity (qmax) found to be 9.64 mgg-1 best explained non-linear fitting (R2 = 0.98) Langmuir isotherm. kinetics profusely followed pseudo second order kinetic model 0.999) qe (experimental) being very much closer (calculative) this model. Thus, prepared waste through solid has potential remove toxic dyes.

Language: Английский

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Eggshell waste materials-supported metal oxide nanocomposites for the efficient photocatalytic degradation of organic dyes in water and wastewater: A review

Bioresource Technology Reports, Journal Year: 2024, Volume and Issue: 26, P. 101865 - 101865

Published: May 19, 2024

Language: Английский

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Investigating the feasibility of using waste eggshells in cement-based materials for sustainable construction

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 23, P. 4059 - 4074

Published: Feb. 15, 2023

To investigate the effect of eggshell powder on water-absorption capacity cement mortar, this research employed experimental testing followed by machine learning (ML) modeling techniques. On mortar specimens, was partially substituted for and sand in concentrations ranging from 0% to 15% with a 2.5% increment, water absorption tests were conducted. Experimental used generate dataset, which then train ML algorithms construct ML-based prediction models. The integration lowered as determined test findings. highest reduction seen at 5% replacement, resulting up 41.7% decrease, 7.5% 45.8% decrease compared control sample. In addition, constructed models exhibited good agreement actual results may be utilized determine incorporating powder. Nevertheless, based R2 value, disparity between predicted results, error analysis, it that random forest model more accurate than decision tree model.

Language: Английский

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Greener fabrication of metal nanoparticles using plant materials: A review

Chemical Physics Impact, Journal Year: 2023, Volume and Issue: 7, P. 100255 - 100255

Published: June 25, 2023

The production of assorted metal nanoparticles based on greener synthesis approaches has garnered immense attention, which influences most humans and the environment. Metal are becoming increasingly useful in many areas our everyday lives including medical sciences. In this context, deployment advantageous methodology open new avenues for researchers to generate adhering green chemistry principles exploiting locally available abundant resources rather than toxic chemicals. Various plant materials can be utilized synthesize as they easy access, inexpensive, safe, good environment, readily deployed biosynthesis diverse sizes well shapes, incorporate unique properties constituents their assembly. This review article provides a comprehensive discussion different using renewable sustainable eco-friendly entities. Finally, future outlook fabrication by means method been discussed.

Language: Английский

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A response surface methodology approach for the removal of methylene blue dye from wastewater using sustainable and cost-effective adsorbent

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 184, P. 129 - 150

Published: Feb. 3, 2024

Potable water availability is becoming increasingly challenging due to increasing level of global population and industrial revolution. The disproportionate use methylene blue (MB), particularly in applications, a growing concern its high resistance biodegradation propensity taint aquatic environments. In this study, we developed novel eco-friendly calcium oxide nanoparticles from eggshells fishbones (CaONPs-ES CaONPs-FB) decorated them on graphene (GO) surfaces. Both nanocomposites (CaONPs-ES@GO CaONPs-FB@GO) were characterized using state-art-instruments used for the removal MB aqueous solutions. transmission electron. Additionally, adsorptive performance CaONPs-ES@GO CaONPs-FB@GO their mechanisms interaction with investigated. BET, SEM/EDX, XPS results revealed that predominantly mesoporous, surface areas 112 m²/g 108 m²/g, respectively. temperature-dependent adsorption isotherms kinetics towards consistent Redlich-Peterson pseudo-second-order models, model demonstrated an similarity Freundlich more than Langmuir model, suggesting dominance heterogeneous multilayer mechanism. synthesized exhibited reusability stability (>70%) even after 10 successive adsorption-desorption cycles. Thermodynamic evaluations process was spontaneous, endothermic, physically driven. outstanding selective behaviour mixture containing MB/RhB MB/MO separation efficiency 99.10% 77.34% CaO-ES@GO, 61.23% 47.81% CaO-FB@GO particulate within primarily involved π-π interaction, hydrogen bonding, pore-filling, electrostatic attraction. cost analysis are economical treating large-scale application. Based statistical response methodology (RSM), contributing effects temperature adsorbent dosage, as well single effect pH, had most significant impact removal. demonstrate promising potential sustainable treatment.

Language: Английский

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Biosynthesis of PbO nanoparticles via Adhatoda vesica (Justicia adhatoda) leaves extract for antimicrobial and photocatalytic applications

Journal of King Saud University - Science, Journal Year: 2024, Volume and Issue: 36(5), P. 103169 - 103169

Published: March 20, 2024

Research applications in biology and the environment can benefit greatly from nanoscience nanotechnology. Aqueous leaf extract of Adhatoda vesica (AV) mediated formation lead oxide (PbO) nanoparticles this study. A XRD analysis confirmed that (PbO NPs) synthesized leaves have a crystalline structure. UV–vis spectroscopy study colloidal PbO absorption revealed greatest bands, photoluminescence (PL) emission spectrum broad nature visible peaks with high surface defects. By analyzing using fourier transform infrared method (FTIR), demonstrated presence functional peaks. It was evident SEM images most NPs had spherical, irregular sponge-like shape. Additionally, nanostructures were tested for their antibacterial activity against Escherichia Coli, level observed, indicating suitability antimicrobial applications. been evaluated photocatalytic degradation methylene blue dye (MB) under UV irradiation produced indications material is suitable degradation. The used as medicine enhances nanomaterials' properties. research focused on focusing environmental pollution control treatment different diseases such asthma, bronchitis, tuberculosis, other through Ayurveda, Siddha, Homeopathy, Unani. based these findings (Justicia adhatoda) be utilized cost-effective environmentally friendly alternative to producing nanoparticles.

Language: Английский

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DFT Theoretical Analysis, Experimental Approach, and RSM Process to Understand the Congo Red Adsorption Mechanism on Chitosan@Graphene Oxide Beads

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: unknown, P. 140090 - 140090

Published: Sept. 1, 2024

Language: Английский

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Acid assisted-hydrothermal carbonization of solid waste from essential oils industry: Optimization using I-optimal experimental design and removal dye application

Arabian Journal of Chemistry, Journal Year: 2023, Volume and Issue: 16(8), P. 104872 - 104872

Published: April 1, 2023

Solid waste (SW) generated from extracting of essential oils medicinal and aromatic plants (MAPs) is an abundant renewable resource, but proper recycling necessary to prevent negative environmental impacts improper disposal. This study focused on converting SW oil (EO) extraction industry by citric acid-catalyzed hydrothermal carbonization (c-HTC) coupled with chemical activation into a carbonaceous material remove organic pollutants. For this purpose, I-optimal design response surface methodology (RSM) was developed investigate the relationship between severity factor (SF) c-HTC process acid dose (HTCcat) carbon retention rate (CRR) hydrochar mass yield (MY). Under optimal conditions (5.32 2 g for SF HTCcat, respectively), optimized (HCop) characterized CRR MY 71.02% 56.14%, respectively. HCop chemically activated KOH solution (AHCop) specific area 989.81 m2.g−1, pore volume 0.583 cm3.g−1, higher heating value (HHV) 37.3 MJ/Kg, oxygenated functions such as –OH, –COOH, C-O methylene blue (MB) removal 90.71%. In addition, modelling adsorption isotherms found that Freundlich isotherm better describes experimental data, second-order model regulates kinetics well. Furthermore, The maximum capacity AHCop 588.24 mg.g−1, separation 0.625 under operating (t = 6 h, T 25 °C, m(AHCop) 0.2 g, [MB]0 300 mg.L-1, pH 7), indicating its potential effectively removing Together, these results provide crucial information using convert biomass functional materials pollutants efficiently. Therefore, several studies must be conducted out discover other application fields material.

Language: Английский

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Biosynthesizing Cassia fistula Extract-Mediated Silver Nanoparticles for MCF-7 Cell Lines Anti-Cancer Assay

ACS Omega, Journal Year: 2023, Volume and Issue: 8(19), P. 17317 - 17326

Published: May 1, 2023

The unique consequence of green synthesis is that the mediator plant able to release chemicals are efficacious as reducing well stabilizing agents. In this work, fruit pulp and leaf essences Cassia fistula have been used manufacture silver nanoparticles through technique. sculpturing was accomplished by utilizing reduction phenomenon ensued due reaction between precursor solution. These biosynthesized were examined, where we scanning electron microscopy, UV-vis spectroscopy, X-ray diffraction techniques means analyze structure, optical properties, crystalline behavior, respectively. absorption spectra for extracts obtained from analyses peaked at 401 397 nm, these peaks imply appearance energy gaps 2.12 2.58 eV, accompanying spherical shapes particles with diameters in ranges 12-20 50-80 together adopted technique a vast array applications, specifically biomedical realm. particular, they being treat several diseases manifested strong anti-tumor agents medicate MCF-7 breast cancer cell lines order minimize growth rate depending on their concentrations.

Language: Английский

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