Modified/Unmodified Nanoparticle Adsorbents of Cellulose Origin With High Adsorptive Potential for Removal of Pb(II) From Aqueous Solution

Azeh, Yakubu; Olatunji, Gabriel Ademola; Adekola, Folahan A.

doi:10.19044/esj.2017.v13n27p425

Cited by 4 publications

(4 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After the most stable binding sites are fully occupied, the amount of energy that is needed for adsorption begins to decrease at a pace that is exponential in nature [59,63,64]. Additionally, the Freundlich model was the most accurate representation of lead(II) sorption by a modified Jordanian zeolite [65], Chlorococcum aquaticum biomass [66], by a Guar gum/bentonite bionanocomposite [67], the sorption of other metal and radionuclides [68][69][70][71][72][73] and nanoparticle adsorbents of cellulose origin [74].…”

Section: Langmuir Isothermmentioning

confidence: 99%

Mercury Sorption onto Rice Husk Ash: An Isothermal Remodelling

Dan-Iya,

Ada,

Ubana

et al. 2023

Bioremed Sci Technol Res

View full text Add to dashboard Cite

The rice milling process produces rice husk as a by-product. It is one of the most important agricultural leftovers in terms of volume. The data of the sorption isotherm of Hg (II) (CV) sorption onto rice husk ash, which was plotted using linearized plots of isothermal models were reanalyzed using isothermal models using nonlinear regression. As the datapoints were small, nineteen isotherm models with parameters of only up to three were utilized to prevent overfitting. The models were Henry, Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Jovanovic, Redlich-Peterson, Sips, Toth, Hill, Khan, BET, Vieth-Sladek, Radke-Prausnitz, Brouers–Sotolongo, Fritz-Schlunder III, Unilan, Fowler-Guggenheim and Moreau. Statistical analysis based on error function analyses such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), accuracy factor (AF), bias factor (BF), Bayesian Information Criterion (BIC), corrected AICc (Akaike Information Criterion), and Hannan-Quinn Criterion (HQC) showed that Freundlich model was the best model. The value of the maximum monolayer adsorption capacity for Hg binding to rice husk ash according to the Langmuir’s parameter qmL was 3.998 mg g-1 (95% Confidence interval from 2.473 to 5.523), while bL (L mg-1), the Langmuir model constants was 0.067 L mg-1 (95% C.I. from 0.001 to 0.134). The Freundlich model is unable to forecast the maximal adsorption capacity. The Halsey rearrangement of the Freundlich equation gave the estimated maximum absorption of 3.39 mg g-1, which is very close to the experimental value. The nonlinear regression method provides parameter values within the 95% confidence interval, facilitating improved comparability with prior research.

show abstract

Section: Langmuir Isothermmentioning

confidence: 99%

Mercury Sorption onto Rice Husk Ash: An Isothermal Remodelling

Dan-Iya,

Ada,

Ubana

et al. 2023

Bioremed Sci Technol Res

View full text Add to dashboard Cite

show abstract

“…In other examples, the Freundlich model was also the best model for lead(II) sorption by a modified Jordanian zeolite [66], by a Guar gum/bentonite bionanocomposite [67], Chlorococcum aquaticum biomass [68] and nanoparticle adsorbents of cellulose origin [69] and the sorption of other metal and radionuclides [70][71][72][73][74][75].…”

Section: Freundlich Isothermmentioning

confidence: 99%

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Dan-Iya,

Khayat,

Shukor

2023

J Environ Bioremed Toxicol

View full text Add to dashboard Cite

Zn is a heavy metal often found at elevated concentrations in effluents as high as 300 ppm from the rubber processing industry as it is used for the vulcanization of rubber. The rice milling process produces rice husk as a by-product. It is one of the most important agricultural leftovers in terms of volume. The data of the sorption isotherm of Zn (II) (CV) sorption onto rice husk ash, which was plotted using linearized plots of isothermal models were reanalyzed using isothermal models using nonlinear regression. As the datapoints were small, isotherms with parameters of only up to three were utilized to prevent overfitting. The nineteen models were Henry, Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Jovanovic, Redlich-Peterson, Sips, Toth, Hill, Khan, BET, Vieth-Sladek, Radke-Prausnitz, Brouers–Sotolongo, Fritz-Schlunder III, Unilan, Fowler-Guggenheim and Moreau. Statistical analysis based on error function analyses such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), accuracy factor (AF), bias factor (BF), Bayesian Information Criterion (BIC), corrected AICc (Akaike Information Criterion), and Hannan-Quinn Criterion (HQC) showed that Freundlich, followed by Langmuir and the Jovanovic models as the best top three models. The value of the maximum monolayer adsorption capacity for Zn binding to rice husk ash according to the Langmuir’s parameter qmL was 7.33 mg g-1 (95% Confidence interval from5.464 to 9.187), while bL (L mg-1), the Langmuir model constants was 0.011 L mg-1 (95% C.I. from 0.030 to 0.182). As the Freundlich equation is unable to model the maximum adsorption, the Halsey rearrangement of the Freundlich equation was utilized and gave the estimated maximum absorption of 7.20 mg g-1, which is very close to the experimental value. The constant values obtained in this study, especially the Langmuir model are largely different from the previously reported linearized approach.

show abstract

“…Adsorption energy decreases exponentially after the strongest bonds are formed [24][25][26]. The Freundlich model was also the best model for lead(II) sorption by a modified Jordanian zeolite [27], by a Guar gum/bentonite bionanocomposite [28], Chlorococcum aquaticum biomass [29] and nanoparticle adsorbents of cellulose origin [30] and the sorption of other metal and radionuclides [31][32][33][34][35][36].…”

Section: Fig 9 Isotherm Of Biosorption Of Cadmium Onto Activated Carb...mentioning

confidence: 99%

Isothermal Modelling of the Adsorption of Cadmium onto Activated Carbon from Tridax procumbens

et al. 2022

View full text Add to dashboard Cite

There is currently no feasible method of recycling Cd compounds, despite the fact that Cd production, consumption, and environmental release have all skyrocketed in recent decades. This raises serious concerns about the potential dangers of Cd compounds to human health. This highlights the pressing need for cadmium pollution cleanup. Biosorption is one of several viable technologies with several advantages, including low operating costs, very efficient detoxification of toxicants at low concentrations, and a low amount of disposal materials. The biosorption of cadmium onto activated carbon from Tridax procumbens is remodeled using nonlinear regression and the optimal mode was determined by a series of error function assessments. The Freundlich model performed best in statistical tests including root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), and corrected Akaike Information Criterion (AICc). This is in contrast to the published work using a linearized form where the Langmuir model best represents the biosorption. The calculated Freundlich parameters kF value using nonlinear regression was 1.501 (1/g) (95% confidence interval from 1.223 to 1.778) and nF value of 4.943 (95% C.I. from 3.492 to 6.393). Confidence intervals for the uncertainty range can be calculated using nonlinear modeling and then used for model comparison and discriminant analysis.

show abstract

Modified/Unmodified Nanoparticle Adsorbents of Cellulose Origin With High Adsorptive Potential for Removal of Pb(II) From Aqueous Solution

Cited by 4 publications

References 44 publications

Mercury Sorption onto Rice Husk Ash: An Isothermal Remodelling

Mercury Sorption onto Rice Husk Ash: An Isothermal Remodelling

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Isothermal Modelling of the Adsorption of Cadmium onto Activated Carbon from Tridax procumbens

Contact Info

Product

Resources

About