Single and multicomponent equilibrium studies for the adsorption of acidic dyes on carbon from effluents

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

The ability of activated carbon to adsorb three acidic dyes, namely, Acid Blue 80 (AB80), Acid Red 114 (AR114), and Acid Yellow (AY117), from wastewater has been studied at 20°C. The three single-component systems and the three binary equilibrium systems have been measured experimentally. The three single-component isotherms were analyzed using the Langmuir, Freundlich, Redlich-Peterson, and Sips equations. The Redlich-Peterson equation gave the lowest errors using the sum of the squares of the errors closely followed by the Sips and Langmuir equations; the Freundlich fits were significantly worse. The three bisolute experimental equilibrium sets of data were analyzed by incorporating the previous four single-component isotherm equations into the ideal adsorbed solution theory (IAST). The solution methods for each of the four isotherm equations are presented in the paper, and the predicted results for the three bisolute systems, using the four isotherm equations, are compared. For the three bisolute systems (AB80 + AR114, AB80 + AY117, and AR114 + AY117), the Redlich-Peterson isotherm gives the best correlation with the experimental isotherm data.

Original languageEnglish
Pages (from-to)9646-9656
Number of pages11
JournalLangmuir
Volume20
Issue number22
DOIs
Publication statusPublished - 26 Oct 2004
Externally publishedYes

Fingerprint

Dive into the research topics of 'Single and multicomponent equilibrium studies for the adsorption of acidic dyes on carbon from effluents'. Together they form a unique fingerprint.

Cite this