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A Soxhlet extractor is a piece of laboratory apparatus [1] invented in 1879 by Franz von Soxhlet. [2] It was originally designed for the extraction of a lipid from a solid material. Typically, Soxhlet extraction is used when the desired compound has a limited solubility in a solvent , and the impurity is insoluble in that solvent.
Extraction in chemistry is a separation process consisting of the separation of a substance from a matrix. The distribution of a solute between two phases is an equilibrium condition described by partition theory.
The extraction cell is filled with the solid sample to be examined and placed in a temperature-controllable oven. After adding the solvent, the cell is heated at constant pressure (adjustable between 0.3 and 20 MPa) up to a maximum temperature of 200°C and kept at constant conditions for a while so that equilibrium can be established.
2: Still pot (extraction pot) - still pot should not be overfilled and the volume of solvent in the still pot should be 3 to 4 times the volume of the soxhlet chamber. 3: Distillation path 4: Soxhlet Thimble
Supercritical Fluid Extraction - Principles and Practice. Butterworth Heinemann series in chemical engineering (2nd ed.). Butterworth Heinemann. ISBN 978-0-7506-9244-1. Taylor, Larry T (1996). Supercritical Fluid Extraction. Techniques in analytical chemistry. John Wiley and Sons, Inc. ISBN 978-0-471-11990-6
Distillation setup using a retort and tube condenser, from a 1921 book. [5] The simplest type of condenser is a straight tube, cooled only by the surrounding air. The tube is held in a vertical or oblique position, and the vapor is fed through the upper end. The heat of condensation is carried away by convection.
Soxhlet extraction This has been a standard extraction method with organic solvents since its creation over a century ago. This technique consists of placing the MIP particles into a cartridge inside the extraction chamber, and the extraction solvent in poured into a flask connected to the extractor chamber.
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