Evolvulus alsinoides plant mediated synthesis of Ag2O nanoparticles for the removal of Cr(VI) ions from aqueous solution: modeling of experimental data using artificial neural network

Balasubramani, Kavitha; Raja, Deepa; Subburam, S.

doi:10.1016/j.mtsust.2022.100124

Cited by 4 publications

(3 citation statements)

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“…(7) (8) where ε is the porosity, c is the solute concentration [M L -3 ], t is the time [t], ρ b is the density of the porous medium [M L -3 ], cp is the concentration of the solute sorbed in the biomass (the mass amount of solute sorbed per unit of biomass), v is the velocity [L t -1 ], D L is the hydrodynamic dispersion tensor, KF and N are constants of Freunlich isotherms (COMSOL 2008). The equation used for flow and transport in porous medium in this simulation is obtained from equation (7), which is written as follows: (9) where the reaction terms are removed if there are no chemical reaction.…”

Section: Generating Of the Geometrymentioning

confidence: 99%

“…A variety of methods and materials have been developed for the Cr(VI) removal including precipitation, membrane separation, or solvent extraction, neutralization and adsorption [6,7]. Among these techniques, biosorption using agricultural waste such as maize cane, has gained considerable attention because of high efficiency, low cost, more availability, and ease of handling [1,8].…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Comparison of Dispersion and Sorption of Cr(VI) on Maize Cane Biomass

Marín-Allende,

Romero-Guzmán,

Alvarado-Rodríguez

et al. 2024

J. Mex. Chem. Soc.

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Abstract. Computational and theoretical modelling has become an important tool for the characterization, development, and validation of packed beds. Relevant breakthrough curves would provide much valuable information on designing a fixed bed adsorption process in field applications. In this study, the hydrodynamic properties involved in the Navier–Stokes flow equation, such as velocity, pressure, and permeability, in a packed bed were investigated. Experiments in natural porous media such as maize cane biomass for determining the sorption of Cr(VI) are compared with numerical simulations. The relevant ordinary partial equations were solved in COMSOL Multiphysics Software friendly and efficiently. The close agreement between the experimental and numerical results suggests that the theoretical model of advection-hydrodynamic dispersion can be used to model the transport of Cr(VI) in unsaturated porous media composed of maize cane biomass. Resumen. El modelado computacional y teórico se ha convertido en una herramienta importante para la caracterización, desarrollo y validación de lechos empacados. Las curvas de avance relevantes proporcionarían información muy valiosa sobre el diseño de un proceso de adsorción de lecho fijo en aplicaciones de campo. En este estudio, se investigaron las propiedades hidrodinámicas involucradas en la ecuación de flujo de Navier-Stokes, como la velocidad, la presión y la permeabilidad, en un lecho empacado. Los experimentos en medios porosos naturales como la biomasa de caña de maíz para determinar la sorción de Cr(VI) se comparan con simulaciones numéricas. Las ecuaciones parciales ordinarias relevantes se resolvieron en COMSOL Multiphysics Software de manera amigable y eficiente. La estrecha concordancia entre los resultados experimentales y numéricos sugiere que el modelo teórico de dispersión hidrodinámica por advección puede usarse para modelar el transporte de Cr(VI) en medios porosos no saturados compuesta por biomasa de caña de maíz.

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Section: Generating Of the Geometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Comparison of Dispersion and Sorption of Cr(VI) on Maize Cane Biomass

Marín-Allende,

Romero-Guzmán,

Alvarado-Rodríguez

et al. 2024

J. Mex. Chem. Soc.

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“…Although excessive amounts of Cr(VI) impact the health of humans, fertility problems, penetrate the dietary supply chain, and trigger malignancies, kidney faults, vomiting, severe constipation, and hemorrhage it is critical to eliminate Cr(VI) before discarding. The amount of Cr(VI) that can be released from industrial effluents into surface water varies by country, ranging from 0.05 to 0.1mg l -1 from this result, simple inexpensive techniques for extracting excessive metallic ions from aquatic adsorbents are required [10][11][12]. Among many nanoparticles (NPs), silica is one nanomaterial this highly used for the elimination of toxic metal ions in the purest form or when clipped with other components to increase capacity [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: Isotherm and kinetic studies

Ramesh,

Deivayanai,

Yaashikaa

et al. 2023

Preprint

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Disposing industrial wastewater and by-products from numerous segments has recently increased its demands in the ecological, methodological, economic, technological, and community spheres where the dispersed water isn’t treated before release. Rice husk is a waste agro field product from rice milling, an abundant source of silica and many other minerals. Rice husk ash is generated by combustion and deep burning out techniques at 600℃. To make 100% pure silica xerogels from RHA, a process involving alkaline separation accompanied by precipitation with acid was performed. Silica-coated Fe3O4 magnetic nanoparticles were produced via microwave practice and used for the complete elimination of Cr(IV) ions from water samples that is lab prepared solutions. The synthesized magnetic nanoparticles were characterized using Scanning electron microscopy (SEM) showing the structure of formed particles, X-ray diffraction (XRD) owns amorphous nature, Energy-dispersive X-ray (EDX) spectroscopy showing peaks of silica 45.36%, Ferrous 49.07%, and oxides in traces. Fourier- transform infrared spectroscopy (FT-IR), Dynamic Light Scattering (DLS), and Zeta Potential. Uniquely the pH value, heat, exposure duration, and dosage all have an impact on the target metal ion has been studied using Atomic Absorption Spectroscopy (AAS) to obtain optimum conditions. Langmuir isotherm seems to be the very greatest fit with the R2 value of 0.9791 and the qm is 102.8 mg/g this study also has great curve fitting in the pseudo-first-order model that supports the top physical adsorption.

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Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: isotherm and kinetic studies

Deivayanai,

Yaashikaa,

Saravanan

et al. 2024

Environ Dev Sustain

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Evolvulus alsinoides plant mediated synthesis of Ag2O nanoparticles for the removal of Cr(VI) ions from aqueous solution: modeling of experimental data using artificial neural network

Cited by 4 publications

References 64 publications

Experimental and Numerical Comparison of Dispersion and Sorption of Cr(VI) on Maize Cane Biomass

Experimental and Numerical Comparison of Dispersion and Sorption of Cr(VI) on Maize Cane Biomass

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: Isotherm and kinetic studies

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: isotherm and kinetic studies

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