Adsorption Isotherms (Lecture 02) || Langmuir, Freundlich & BET theory || By Muneeb

Freundlich Adsorption Isotherm Freundlich adsorption gives the variation in the quantity of gas adsorbed by a unit mass of solid adsorbent with the change in pressure of the system for a given temperature. Where x is the mass of the gas adsorbed, m is the mass of the adsorbent, P is the pressure and n is a constant which depends upon the nature of the adsorbent and the gas at a given temperature. Langmuir Adsorption Isotherms The Freundlich adsorption isotherm is followed by another two isotherms, Langmuir adsorption isotherms and BET theory. The Langmuir adsorption isotherms predict linear adsorption at low adsorption densities and a maximum surface coverage at higher solute metal concentrations. BET Adsorption Isotherm The theory of multilayer adsorption proposed by Brunauer, Emmett and Teller in 1938 (BET Theory) assumes that physisorption results in the formation of multilayer adsorption. The theory also assumes that the solid surface has uniform sites of adsorption and that adsorption at one site does not affect adsorption at neighbouring sites. #AdsorptionIsotherms #SurfaceChemistry #LangmuirAdsorption #FreundlichAdsorption #BETIsotherm #SorptionProcess #AdsorptionEquilibrium #AdsorptionTheory #SurfaceAreaMeasurement #AdsorbentMaterials #SurfaceAdsorption #GasAdsorption #LiquidAdsorption #AdsorptionCapacity #AdsorptionKinetics #AdsorptionThermodynamics #IsothermModels #AdsorptionExperiments #AdsorptionParameters #EnvironmentalAdsorption #CatalyticAdsorption #PharmaceuticalAdsorption #WaterTreatmentAdsorption #GasSeparationAdsorption #AdsorptionExplained #AdsorptionTechniques #FactorsInAdsorption #AdsorptionAnalysis #AdsorptionApplications #ChemistryVideos