Adsorption of fluoride by porous adsorbents: Estimating pore diffusion coefficients from batch kinetic data

Yuan, Gang; Zhao, Bin; Chu, Khim Hoong

doi:10.4491/eer.2019.205

Cited by 7 publications

(4 citation statements)

References 42 publications

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“…The rate is inversely proportional to particle size, distribution coefficient, and film thickness when it is controlled by film diffusion. If both reactants are present in the solution, then the rate-limiting phase of diffusion will be referred to as physisorption (physical exchange) [22][23][24][25].…”

Section: Resultsmentioning

confidence: 99%

Kinetic Analysis of the Adsorption of Malachite Green onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Sabó

Yahuza²,

Dan-Iya³

et al. 2021

J Biochem Microbiol Biotechnol

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Malachite green is extensively used in the textile dye industry and in agriculture as fish pests’ pesticide. Biosorption is a type of sorption technique that uses a biological sorbent. As of now, biosorption is viewed as a simple and cost-effective process that might be used as an alternative to traditional pollution treatment methods. Bioremediation is one of the branches of bioremediation that is used to minimise pollution in the context of incorrect textile waste disposal. The sorption isotherm of Malachite Green onto graphene oxide were analyzed using three models—pseudo-1st, pseudo-2nd and Elovich, and fitted using non-linear regression. The Elovich model was the poorest in fitting the curve based on visual observation and the best was pseudo-2nd order based on statistical analysis such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), Bayesian Information Criterion (BIC) and Hannan–Quinn information criterion (HQC). Nonlinear regression analysis using the pseudo-2nd order model gave values of equilibrium sorption capacity qe of 6.164 mg/g (95% confidence interval from 5.918 to 6.410) and a value of the pseudo-2nd-order rate constant, k2 of 0.034 (95% confidence interval from 0.024 to 0.045). Further analysis is needed to provide proof for the chemisorption mechanism usually tied to this kinetic.

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Section: Resultsmentioning

confidence: 99%

Kinetic Analysis of the Adsorption of Malachite Green onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Sabó

Yahuza²,

Dan-Iya³

et al. 2021

J Biochem Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

“…As film diffusion is in charge, the rate is inversely proportional to particle size, distribution coefficient, and film thickness. In the event that both reactants are present in a solution, the rate-limiting phase of diffusion will be called physisorption" (physical exchange) [26][27][28][29].…”

Section: Resultsmentioning

confidence: 99%

Kinetic Analysis of the Adsorption of Ethyl Violet onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Dan-Iya¹,

Basirun

Shukor

2021

Bioremed Sci Technol Res

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An example of biosorption is when the sorbent is made from a biodegradable material. Biosorption is now being seen as a simple, cost-effective, and environmentally acceptable alternative to traditional pollution treatment methods. Bioremediation is one of the branches of bioremediation that is used to minimise pollution in the context of incorrect dye waste disposal. The sorption isotherm of Ethyl Violet onto graphene oxide were analyzed using three models—pseudo-1st, pseudo-2nd and Elovich, and fitted using non-linear regression. Statistical analysis based on root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), Bayesian Information Criterion (BIC) and Hannan–Quinn information criterion (HQC) that showed that the pseudo-second-order model was the best which was the same finding from the original published work. The calculated evidence ratio was 11 with an AICc probability value of 0.91 indicating that the best model was at least 11 times better than the nearest best model, which was pseudo-1st. Further analysis is needed to provide proof for the mechanism usually tied to this kinetic. Nonlinear regression analysis using the pseudo-2nd order model for the highest concentration tested, which was 10 mM, gave values of equilibrium sorption capacity qe of 30.928 mg/g (95% confidence interval from 29.328 to 32.527) and a value of the pseudo-2nd-order rate constant, k2 of 0.020 (95% confidence interval from 0.011 to 0.028).

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“…When the rate is controlled through film diffusion, there is an inverse connection between the rate and the particle size, the distribution coefficient, and the thickness of the film. In this case, the label physisorption is used since the rate-limiting phase is diffusion, which is independent of the concentrations of both reactants in the solution (physical exchange) [47][48][49][50].…”

Section: Resultsmentioning

confidence: 99%

Kinetic Analysis of the Adsorption of Chromium onto Calcium Alginate Nanoparticles

Dan-Iya¹,

Yahuza²,

Sabó

2021

Bull Environ Sci Sust Manage

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The widespread use of chromium in industrial applications such as leather tanning, metallurgy, electroplating, and refractory materials has resulted in it being one of the most harmful trace elements to be introduced into surface and ground waters. The sorption isotherm of chromium sorption onto calcium alginate nanoparticles were analyzed using three models—pseudo-1st, pseudo-2nd and Elovich, and fitted using non-linear regression. The Elovich model was the poorest in fitting the curve based on visual observation followed by the pseudo-1st order. Statistical analysis based on root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), Bayesian Information Criterion (BIC) and Hannan–Quinn information criterion (HQC) that showed that the pseudo-1ST order model is the best model. Kinetic analysis using the pseudo-1st order model at 400 mg/L 4-BDE gave a value of equilibrium sorption capacity qe of 31.89 mg g-1 (95% confidence interval from 30.37 to 33.42) and a value of the pseudo-1st-order rate constant, k1 of 0.22 (95% confidence interval from 0.019 to 0.025). Further analysis is needed to provide proof for the chemisorption mechanism usually tied to this kinetic.

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Adsorption of fluoride by porous adsorbents: Estimating pore diffusion coefficients from batch kinetic data

Cited by 7 publications

References 42 publications

Kinetic Analysis of the Adsorption of Malachite Green onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Kinetic Analysis of the Adsorption of Malachite Green onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Kinetic Analysis of the Adsorption of Ethyl Violet onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Kinetic Analysis of the Adsorption of Chromium onto Calcium Alginate Nanoparticles

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