Results 221 to 230 of about 339,684 (268)

Predicting Freundlich adsorption isotherm of atrazine on Japanese soils

Soil Science and Plant Nutrition, 2001
Abstract It was possible to predict the amounts of atrazine adsorption on Japanese soils by deriving predicting equations from the value of the initial concentration of atrazine applied to the soils containing less than 70 g kg-1 carbon. The equations predicted the values of Freundlich isotherm coefficients, log K F and 1/n.
Munehiro Ebato, Koyo Yonebayashi, Takashi Kosaki   +2 more
openaire   +1 more source

Derivation of the Freundlich Adsorption Isotherm from Kinetics

Journal of Chemical Education, 2009
The Freundlich adsorption isotherm is a useful description of adsorption phenomena. It is frequently presented as an empirical equation with little theoretical basis. In fact, a variety of derivations exist. Here a new derivation is presented using the concepts of fractal reaction kinetics. This derivation provides an alternative basis for interpreting
openaire   +1 more source

Isotherms and thermodynamics of CO2 adsorption on a novel carbon-magnetite composite sorbent

Chemical engineering research & design, 2018
In this work, CO2 adsorption on a novel composite material, CB-FM, obtained coating a low-cost carbon black (CB) with magnetite fine particles (FM), has been characterized from the thermodynamic point of view.
F. Raganati, M. Alfè, V. Gargiulo, R. Chirone, P. Ammendola   +4 more
semanticscholar   +1 more source

Pressure Swing Adsorption for a System with a Freundlich Isotherm

Separation Science and Technology, 1987
An analytical expression is obtained for the equilibrium relationship between the enrichment factor of the product stream and the ratio of the pressure in the feed stream to that in the product stream for a pressure-swing-adsorption system with a Freundlich isotherm.
Xiaochun Lu, Daniel Rothstein, Richard Madey, Jan-Chan Huang   +3 more
openaire   +1 more source

Poly(vinyl alcohol)/Vitamin C-multi walled carbon nanotubes composites and their applications for removal of methylene blue: Advanced comparison between linear and nonlinear forms of adsorption isotherms and kinetics models

Polymer, 2019
The fabrication of glutaraldehyde (Gl)-crosslinked poly(vinyl alcohol) (PVA)/Vitamin C (VC)-multi walled carbon nanotubes (VC-MWCNTs) composites and their adsorption capacity for removal of methylene blue (MB) are reported.
S. Mallakpour, Shima Rashidimoghadam
semanticscholar   +1 more source

ON THE BASIS FOR THE FREUNDLICH ADSORPTION ISOTHERM

Chemical Engineering Communications, 1990
Abstract The theoretical underpinnings of the Freundlich adsorption isotherm, an often useful empiricism, are discussed. It is shown that the Freundlich expression does not originate from a true exponential distribution of energies of adsorption for the adsorption sites.
openaire   +1 more source

A modified Langmuir-Freundlich isotherm model for simulating pH-dependent adsorption effects

Journal of Contaminant Hydrology, 2012
Analytical isotherm equations such as Langmuir and Freundlich isotherms are widely used for modeling adsorption data. However, these isotherms are primarily useful for simulating data collected at a fixed pH value and cannot be easily adapted to simulate pH-dependent adsorption effects. Therefore, most adsorption studies currently use numerical surface-
Gautham P, Jeppu, T Prabhakar, Clement
openaire   +2 more sources

Modeling adsorption in multicomponent systems using a Freundlich-type isotherm

Journal of Contaminant Hydrology, 1993
Abstract The suitability of a Freundlich-type isotherm, the Sheindorf-Rebuhn-Sheintuch (SRS) equation, to represent the competitive adsorption of Sr, Cs and Co in Ca-montmorillonite suspensions was investigated. Experimental adsorption data were obtained for systems containing these cations as single-component, binary and ternary mixtures.
Melida Gutierrez, Hector R. Fuentes
openaire   +1 more source

Separation of lignin from beech wood hydrolysate using polymeric resins and zeolites – Determination and application of adsorption isotherms

Separation and Purification Technology, 2019
Separation of lignin from hemicellulose sugar out of beech wood hydrolysate (BWH) by four polymeric and one zeolitic adsorbents was investigated. First, by means of single and binary model solutions (MS), consisting of 3.1 g/L phenol and/or 4.2 g/L ...
Roy Nitzsche, A. Gröngröft, M. Kraume
semanticscholar   +1 more source

Prediction of individual Freundlich isotherms from binary and ternary phenolic compounds mixtures

Chemosphere, 2008
Method for simultaneous determination of individual component's adsorption equilibrium parameters for binary and ternary phenolic compounds mixtures was investigated in this research. The Freundlich equilibrium parameters of binary and ternary component of phenolic compounds were determined from one fixed composition of phenolic wastewater.
Huan-Jung, Fan, Hsin-Sin, Yang, Yung-Sen, Tsai, Eiji, Furuya   +3 more
openaire   +2 more sources