A systematic study and proposed model of the adsorption of binary metal ion solutes in aqueous solution onto activated carbon produced from pecan shells

Seyed A. Dastgheib, David A. Rockstraw

Research output: Contribution to journalArticlepeer-review

Abstract

Adsorption isotherms of a number of binary solute systems have been obtained. The adsorption behavior of these cations in the presence of other metal ions that display strong or intermediate affinities for adsorption sites has been systematically investigated. In this investigation the following factors have been considered: (1) metal ion site competition; (2) charge accumulation near the carbon surface; and (3) speciation of the metal ions. Two multicomponent adsorption models are proposed, and the results are compared to two models presented in the literature. The performance of these models is evaluated by an analysis of error. It is found that models with three interaction parameters generally provide a better fit of the data. In most cases, the proposed two-parameter model gives acceptable results.

Original languageEnglish (US)
Pages (from-to)1853-1861
Number of pages9
JournalCarbon
Volume40
Issue number11
DOIs
StatePublished - Sep 2002
Externally publishedYes

Keywords

  • A: Activated carbon
  • C: Adsorption, Modeling

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science

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