Langmuir isotherm models applied to the multicomponent sorption of acid dyes from effluent onto activated carbon

Keith K.H. Choy; John F. Porter; Gordon McKay

doi:10.1021/je9902894

Langmuir isotherm models applied to the multicomponent sorption of acid dyes from effluent onto activated carbon

Keith K.H. Choy, John F. Porter, Gordon McKay

Hong Kong University of Science and Technology

Research output: Contribution to journal › Article › peer-review

253 Citations (Scopus)

Abstract

The adsorption of three acidic dyes, Acid Blue 80 (AB80), Acid Red 114 (AR114), and Acid Yellow 117 (AY117) onto activated carbon, filtrasorb 400, has been studied. Three single-component and three binary, AB80 + AR114, AB80 + AY 117, and AR114 + AY117, isotherms were determined. Four models for predicting the multicomponent equilibrium sorption isotherms have been compared in order to determine which is the best fit model to predict or correlate binary adsorption data. These were an extended Langmuir isotherm, a simplified model based on single-component equilibrium factors, a modified extended Langmuir isotherm with a constant interaction factor, and a modified extended Langmuir isotherm incorporating a surface coverage dependent interaction factor.

Original language	English
Pages (from-to)	575-584
Number of pages	10
Journal	Journal of Chemical and Engineering Data
Volume	45
Issue number	4
DOIs	https://doi.org/10.1021/je9902894
Publication status	Published - Jul 2000
Externally published	Yes

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title = "Langmuir isotherm models applied to the multicomponent sorption of acid dyes from effluent onto activated carbon",

abstract = "The adsorption of three acidic dyes, Acid Blue 80 (AB80), Acid Red 114 (AR114), and Acid Yellow 117 (AY117) onto activated carbon, filtrasorb 400, has been studied. Three single-component and three binary, AB80 + AR114, AB80 + AY 117, and AR114 + AY117, isotherms were determined. Four models for predicting the multicomponent equilibrium sorption isotherms have been compared in order to determine which is the best fit model to predict or correlate binary adsorption data. These were an extended Langmuir isotherm, a simplified model based on single-component equilibrium factors, a modified extended Langmuir isotherm with a constant interaction factor, and a modified extended Langmuir isotherm incorporating a surface coverage dependent interaction factor.",

author = "Choy, {Keith K.H.} and Porter, {John F.} and Gordon McKay",

year = "2000",

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AU - Choy, Keith K.H.

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AU - McKay, Gordon

PY - 2000/7

Y1 - 2000/7

N2 - The adsorption of three acidic dyes, Acid Blue 80 (AB80), Acid Red 114 (AR114), and Acid Yellow 117 (AY117) onto activated carbon, filtrasorb 400, has been studied. Three single-component and three binary, AB80 + AR114, AB80 + AY 117, and AR114 + AY117, isotherms were determined. Four models for predicting the multicomponent equilibrium sorption isotherms have been compared in order to determine which is the best fit model to predict or correlate binary adsorption data. These were an extended Langmuir isotherm, a simplified model based on single-component equilibrium factors, a modified extended Langmuir isotherm with a constant interaction factor, and a modified extended Langmuir isotherm incorporating a surface coverage dependent interaction factor.

AB - The adsorption of three acidic dyes, Acid Blue 80 (AB80), Acid Red 114 (AR114), and Acid Yellow 117 (AY117) onto activated carbon, filtrasorb 400, has been studied. Three single-component and three binary, AB80 + AR114, AB80 + AY 117, and AR114 + AY117, isotherms were determined. Four models for predicting the multicomponent equilibrium sorption isotherms have been compared in order to determine which is the best fit model to predict or correlate binary adsorption data. These were an extended Langmuir isotherm, a simplified model based on single-component equilibrium factors, a modified extended Langmuir isotherm with a constant interaction factor, and a modified extended Langmuir isotherm incorporating a surface coverage dependent interaction factor.

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Langmuir isotherm models applied to the multicomponent sorption of acid dyes from effluent onto activated carbon

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