Comparison of optimised isotherm models for basic dye adsorption by kudzu

Allen, Stephen; Gan, Quan; Matthews, Ronan; Johnson, Pauline A.

doi:10.1016/s0960-8524(02)00281-x

Cited by 357 publications

(200 citation statements)

References 24 publications

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“…Previous research on determining isotherm parameters (Ho et al 2002;Allen et al 2003) reported that the MPSD and HYBRID error function provided the best fit. This trend was observed in part in this study.…”

Section: Resultsmentioning

confidence: 90%

“…Similar error functions were used by Allen et al (2003). These equations will be evaluated using the dimensionless numbers derived from fluid and soil properties as the independent variables (Eqns.…”

Section: Error Functionsmentioning

confidence: 99%

“…This technique has been used to determine isotherm parameters (Allen et al, 2003;Ho et al, 2002;Khan et al, 1997;Malek and Farooq, 1996;Seidel-Morgenstern and Guiochon, 1993;Seidel and Gelbin, 1988). The use of optimization allowed for a choice of the error function and consequently a broader mathematical approach to model development.…”

Section: Introductionmentioning

confidence: 99%

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Use of optimization to develop a correlation model for predicting residual NAPL saturation

Chevalier

2006

Civil Engineering and Environmental Systems

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Predicting the residual saturation of a trapped non-aqueous phase liquid contaminant is critical to estimating the region of contamination, the design of remediation strategies, and risk assessment. Models were developed to predict residual NAPL saturation utilizing optimization and non-linear error functions, consequently allowing for a broader mathematical approach to model development. The input parameters evaluated represent soil and fluid properties: the uniformity coefficient (C u ), the coefficient of gradation (C c ), the capillary number (Nc), the bond number (Nb) and the total trapping number (Nt). Overall, the model that performed best was based on a second-order equation with the independent variables C u and Nt 1 using the sum of the squares of the errors. The nonlinear error function based on a derivative of Marquardt's Percent Standard Deviation performed best for three other cases.

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Section: Resultsmentioning

confidence: 90%

Section: Error Functionsmentioning

confidence: 99%

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Use of optimization to develop a correlation model for predicting residual NAPL saturation

Chevalier

2006

Civil Engineering and Environmental Systems

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“…Sorption is assumed to occur at specific homogeneous sites within the adsorbent. 25 Once an HgCl 2 molecule has occupied a site, no further adsorption can occur there. The Langmuir isotherm is given by eq 1.…”

Section: Langmuir Isothermmentioning

confidence: 99%

“…The R-P isotherm model combines elements from both the Langmuir and the Freundlich equations; the mechanism of adsorption is hybrid rather than ideal monolayer adsorption. 25,30 …”

Section: Redlich-peterson Isothermmentioning

confidence: 99%

Determination of the Adsorption Isotherm of Vapor-Phase Mercury Chloride on Powdered Activated Carbon Using Thermogravimetric Analysis

Lin

Yuan

Chen

et al. 2006

Journal of the Air & Waste Management Association

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This study investigated the use of thermogravimetric analysis (TGA) to determine the adsorptive capacity and adsorption isotherm of vapor-phase mercury chloride on powdered activated carbon (PAC). The technique is commonly applied to remove mercury-containing air pollutants from gas streams emitted from municipal solid waste incinerators. An alternative form of powdered activated carbon derived from a pyrolyzed tire char was prepared for use herein. The capacity of waste tire-derived PAC to adsorb vapor-phase HgCl 2 was successfully measured using a self-designed TGA adsorption system. Experimental results showed that the maximum adsorptive capacities of HgCl 2 were 1.75, 0.688, and 0.230 mg of HgCl 2 per gram of powdered activated carbon derived from carbon black at 30, 70, and 150°C for 500 g/m 3 of HgCl 2 , respectively. Four adsorption isotherms obtained using the Langmuir, Freundlich, Redlich-Peterson, and BrunauerEmmett-Teller (BET) models were used to simulate the adsorption of HgCl 2 . The comparison of experimental data associated with the four adsorption isotherms indicated that BET fit the experimental results better than did the other isotherms at 30°C, whereas the Freundlich isotherm fit the experimental results better at 70 and 150°C. Furthermore, the calculations of the parameters associated with Langmuir and Freundlich isotherms revealed that the adsorption of HgCl 2 by PAC-derived carbon black favored adsorption at various HgCl 2 concentrations and temperatures.

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Recovery of Valuable Bioactives from Residues Arising from Fruit Processing

Saleh

Carle

2013

Bioactives in Fruit

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Comparison of optimised isotherm models for basic dye adsorption by kudzu

Cited by 357 publications

References 24 publications

Use of optimization to develop a correlation model for predicting residual NAPL saturation

Use of optimization to develop a correlation model for predicting residual NAPL saturation

Determination of the Adsorption Isotherm of Vapor-Phase Mercury Chloride on Powdered Activated Carbon Using Thermogravimetric Analysis

Recovery of Valuable Bioactives from Residues Arising from Fruit Processing

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