'Adsorption isotherm' presentation slideshows

SURFACE CHEMISTRY

SURFACE CHEMISTRY.

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Physical chemistry of surface phenomena. Basics of adsorptive therapy

Physical chemistry of surface phenomena. Basics of adsorptive therapy. SURFACE PHENOMENA. are phenomena associated with the existence of interphase boundaries. SURFACE PHENOMENA ARE STUDIED BY COLLOID CHEMISTRY. Surface phenomena. Inside the fluid forces are balanced

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Adsorption Lecture Notes

Adsorption Lecture Notes. ENVE542 Air Pollution Control Technologies By Dr. P?nar Ergenekon GYTE 2010 Fall. Useful When. The pollutant gas is noncombustible or difficult to burn The pollutant is sufficiently valuable to warrant recovery The pollutant is in very dilute concentration

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Measuring the specific surface area of snow using methane adsorption and IR reflectance

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OUTLINE: Short review of theory Experimental methods and machinery at the lab Case studies

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Isotherms and batch kinetics of the biosorption of cadmium onto pre-treated tridax procumbens

The ash obtained from Tridax procumbens leaves was used to adsorb cadmium from aqueous solution of Cadmium chloride. The sorption process with respect to its metal ion concentration, pH, contact time and particle size on adsorption were studied. The percentage removals with respect to the parameters were also studied. The most effective pH range was found to be 5.8-6.0 for sorption of metal ions. The first order rate equation by Lagergren was tested on the kinetic data and the adsorption process followed first order rate kinetics. Isotherms data were analyzed for possible agreement with Langmuir and Freundlich adsorption isotherms; the model for dynamics of metal ions uptake proposed in this work fitted the experimental data reasonably well for Freundlich adsorption isotherm than Langmuir adsorption isotherm. The correlation coefficients (R2 ) were 0.998 and 0.912 for Freundlich and Langmuir isotherms respectively.

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Adsorption

Adsorption. What is Adsorption?. Adsorption is the transfer of a material from one liquid or gaseous state to a surface. The substance that is transferred to the surafce is the adsorbate . The material on which the adsorbate deposits is the adsorbent .

1.18k views • 7 slides