Contents • Introduction • Preparation of Extraction columns • Results • Conclusion HYDROMETALLURGY SEMINAR, MARCH 2015 Introduction Extraction chromatography: • Combination: – Selectivity of liquid-liquid extraction – Multistage character & rapidity of chromatographic processes • Extractant is adsorbed on the surface of an inert support • Separation of the metals is based on the distribution of the cations of interest between an organic and an aqueous phase Include the possibility to use mineral acid as mobile phase Amount of ...
Using a graphical method for counter-current cascades in a partially miscible system, streams exiting the same stage (such as E1 and R1) are connected by __________. E E extract 1 2 1 2 R raffinate 1 R 2 A. the difference point B. equilibrium curve C. neither of these Given a constant liquid-liquid extraction partition coefficient, the flow rates of solute (B) and liquid carrier (A), how can one decrease the concentration of B in the raffinate stream? Assume equilibrium ...
Definition of Mass Transfer Q2. Define Mass Transfer? The transference of a component in a mixture from a region where its concentration is high to a region where the concentration is lower. Q2. Where do Mass transfer can occur? • Ans. Mass transfer process can take place in a gas or vapour or in a liquid. Q3. What are the types of mass transfer? Ans. it can result from the random velocities of the molecules (molecular diffusion) or from the ...
Solvent 1+sample Some of the sample Sample become distributed +impurities moves to solvent between 1 and 2 Immiscible solvents are mixtures of liquids that are insoluble in each other. Such solvents will form two layers; the upper layer is for the liquid with the lower density and the lower layer is for the liquid with the higher density. The process of extraction with immiscible solvents is generally employed for the isolation of dissolved compounds from solutions, isolation of solid compounds ...
Announcements • Homework Set 3 – Posted – new due date for collected homework: 5/9 • Last Quiz – Thursday – on Mass Spectrometry Calculations • Today’s Lecture – Chromatography • Overview • Partitioning and Retention • Selectivity (if time) Chromatography Overview • Chromatography is an area of “Separation Science” • Separation Science also includes other separation techniques (both instrumental, like capillary electrophoresis, and non- instrumental, like liquid-liquid extraction) • Main Purposes of Separations – Quantitative or qualitative ...
PPT - Power Point | 0.94 MB | Free Download
