Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Freundlich's Isotherm Extended by Statistical Mechanics

Rocha1, Iha, Faleiros

  • 1Instituto de Quimica, USP, CP 26077, Sao Paulo, SP, 05599-970, Brazil

Journal of Colloid and Interface Science
|January 15, 1997
PubMed
Summary

This study derives an analytical expression for Freundlich

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

In vivo storage of oocytes leads to lower survival, increased abnormalities and may affect the ploidy status in the yellowtail tetra Astyanax altiparanae.

Zygote (Cambridge, England)·2018
Same author

Application of an Electronic Aroma Sensing System to Cork Stopper Quality Control.

Journal of agricultural and food chemistry·2001
Same author

Stenting of unprotected left main coronary artery in a patient with cardiogenic shock.

Arquivos brasileiros de cardiologia·2001
Same author

Evaluation of Secnidazole Gel and Tinidazole Suspension in the Treatment of Giardiasis in Children.

The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases·2000
Same author

Impact of Antimicrobial Resistance on the Treatment of Invasive Pneumococcal Infections.

Current infectious disease reports·2000
Same author

The First Microporous Framework Cerium Silicate This work was supported by PRAXIS XXI, FEDER, and FCT.

Angewandte Chemie (International ed. in English)·2000

Area of Science:

  • Physical Chemistry
  • Surface Science
  • Materials Science

Background:

  • Freundlich's isotherm is widely used to describe gas and solute adsorption.
  • Heterogeneous surfaces present challenges in accurately modeling adsorption behavior.
  • Existing models may lack analytical solutions for complex adsorption systems.

Purpose of the Study:

  • To derive a new analytical expression for the Freundlich isotherm.
  • To provide a theoretical framework compatible with heterogeneous surface theory.
  • To facilitate the accurate identification of Freundlich parameters from experimental data.

Main Methods:

  • Developed an asymptotic expansion for the adsorption isotherm.
  • Assumed an exponential distribution of adsorption sites.
  • Incorporated the Langmuir homogeneous isotherm for individual sites.
  • Solved the fundamental integral equation for adsorption.

Main Results:

  • Obtained an analytical expression for the Freundlich isotherm (θ = KCm).
  • Successfully identified the Freundlich parameters K and m from the derived expression.
  • The expression is an analytical solution within correct integration limits.
  • The model aligns with heterogeneous surface theory.

Conclusions:

  • The derived expression offers a robust method for analyzing adsorption on heterogeneous surfaces.
  • This approach provides a clear pathway to determine Freundlich parameters.
  • Validated the model by fitting experimental data for CO2 adsorption on BPL-activated carbon.

Related Experiment Videos