Thermodynamically Derived Relationships between the Modified Langmuir Isotherm and Experimental Parameters Article

Polzer, WL, Gopala Rao, M, Fuentes, HR et al. (1992). Thermodynamically Derived Relationships between the Modified Langmuir Isotherm and Experimental Parameters . Environmental Science and Technology, 26(9), 1780-1786. 10.1021/es00033a011

cited authors

  • Polzer, WL; Gopala Rao, M; Fuentes, HR; Beckman, RJ

abstract

  • The modified Langmuir isotherm parameters and the thermodynamic ion-exchange properties are developed from theoretical considerations leading to the derivation of a relationship between the two. For the binary ionexchange system, the relationship indicates that a unique set of isotherm parameters can be defined by a minimum set of experimental parameters. Those parameters are the solid-liquid ratio and the initial concentration of the competing solute in the liquid and exchanger phases. In principle, unique sets of isotherm parameters can be predicted for different conditions from a known set of experimentally determined parameters. The effect of experimental parameters (e.g., solid-liquid ratio and competing solute concentration) on isotherm parameters (e.g., linear Kd) have been documented in the literature. Experimental data are used to illustrate the derived relationships. © 1992, American Chemical Society. All rights reserved.

authors

publication date

  • September 1, 1992

published in

Digital Object Identifier (DOI)

start page

  • 1780

end page

  • 1786

volume

  • 26

issue

  • 9