Cinetique de l’adsorption du phenol en couche fluidisee de charbon actif R. Ganho. Thèse Docteur-Ingénieur, Université Paul-Sabatier, Toulouse (). [17] . Etude de l’adsorption de complexes cyanures sur charbon actif .. They demonstrated that the removal of these metal ions followed the descending order : Cu\. Request PDF on ResearchGate | Modélisations des isothermes d’adsorption sur charbon actif de composés aromatiques en solution aqueuse | Models have.

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Molecules are adsorbed and immobilized onto sites of different energies They do, ej, have some interactions with other adsorbed molecules. Application of the intra-particle diffusion model to the adsorption of the basic red dye on sawdust. For the kinetics study, perfectly stirred batch experiments were carried out after adjustment of the parameters influencing the system, such as the pH, adsorbent dosage and initial dye concentration.

Revue des sciences de l’eau24 2— Basic red dye, cnarbon, adsorption, kinetics, mechanisms. Activated carbon is used as the adsorbent.

Low concentrations of organic chqrbon are not easily removed by conventional treatment methods, but activated carbon bas a good affinity for various organics and is used in batch or column reactors. Their is good agreement.

Étude cinétique et thermodynamique de l’adsorptio… – Revue des sciences de l’eau – Érudit

The percentage is constant alter 35 cm depth of the activated carton in agreement with the electon microscopy study that showed that the flora was only present in the 10 first centimeters. The linearized Clark equation 16 gives a good representation of experimental results fig.

Application of the pseudo-second order model to the adsorption of the basic red dye on sawdust. B value can be determined with the different columns fig. Have you forgotten your login?


Effect of contact time on the adsorption of the basic red dye on sawdust. Adsorption dynamique en phase liquide sur charbon actif: Effect of the sawdust dosage on the adsorption of the basic red dye in aqueous solution. These groups consist of the sites responsible for the complex adsorption.

Application of the external diffusion model to the adsorption of the basic red dye on sawdust. The point of zero charge pH PZC of sawdust.

Adsorption dynamique en phase liquide sur charbon… – Revue des sciences de l’eau – Érudit

Mohamed Zarrouki 1, 2 Details. From the difference in the area of the two curves, it is possible to calculate the supplementary biological degradation. In conclusion, nome of the tested models lead to different parameters by using low break-through curve concentrations or others with the whole arsorption of experimental points, but only one CLARK gives actjf good description of the break-through curves in our actual knowledge.

Revue des sciences de l’eau 6, n o 1 The general equation is equation As early as BOHART and Acti presented differential equations which govern the dynamics of the adsorption of vapours and gases on fixed beds and the final result, applied to the liquid-solid phase, yields the kinetic adsorption rate k and the maximum adsorption capacity No eq. The thermodynamic study has shown that the data tiken from adsorption of the dicyanoaurate ions onto the carbon can be fitted by LANGMUIR’s isotherm, which has been generalized for several types of sites.

The activated carbon efficiency No can be estimated and the adsorption rate constant calculated from the slope and the y-intercept. The limiting step is the diffusion through dharbon film at the start of the reaction, which is followed by the diffusion-adsorption into the porous structure in a region close to equilibrium. This has allowed us to understand the fundamental mechanism of adsorption in a model system which consists of a solution of dicyanoaurate ions and activated carbon.


The coefficients A and B table 1 are determined from the straight lines obtained with the low break-curve concentrations fig.

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The aim of this work is to study the recovery of precious metals by complexing them with a suitable reagent. Kinetic modeling of the adsorption of basic dyes by kudzu.

Langmuir and Freundlich parameters for the adsorption of the basicred dye on sawdust. The kinetic coefficient Sa, and the maximum capacity adsorption No are shown asdorption table 1.

Application of the Langmuir model to the adsorption of the basic red dye on sawdust. Tuesday, October 23, – 2: Effect of temperature on the adsorption of the basic red dye on sawdust.

The agreement is only for the low values of C in the break-through curves. Wednesday, April 5, – Values of the kinetic constants for the adsorption of the basic red dye on sawdust. Activated carbon-dicyanoaurate ion solution. Two parameters A and r are determined by regression equations ; we proposed a simple method to calculate A and r by a linearization of the preceding equation eq.

Solution d’ion dicyanoaurate-charbon actif. Revue des sciences de l’eau 24, n o 2 Mohamed Zarrouki 1, 2 AuthorId: By transposition to the liquid phase, we aadsorption calculated the concentration distribution in the bed eq.