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Encyclopedia > Solvent extraction
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In chemistry, liquid-liquid extraction (or more briefly, solvent extraction) is a useful method to separate components (compounds) of a mixture. The success of this method depends upon the difference in solubility of a compound in various solvents. Chemistry (in Greek: χημεία) is the science of matter that deals with the composition, structure, and properties of substances and with the transformations that they undergo. ... A mixture is a chemical substance which is a homogeneous or heterogeneous association without chemical bonding of elements and/or compounds in varying proportions and that retain their own individual properties and makeup. ... Jump to: navigation, search It has been suggested that this article or section be merged with Solution. ... A solvent is a liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. ...


Liquid-liquid extraction is based on the transfer of a solute substance from one liquid phase into another liquid phase according to the solubility. Extraction becomes a very useful tool if you choose a suitable extraction solvent. You can use extraction to separate a substance selectively from a mixture, or to remove unwanted impurities from a solution. A substance is soluble in a fluid if it dissolves in the fluid. ...


In the practical use, usually one phase is a water or water-based (aqueous) solution and the other an organic solvent (i.e. vegoil) which is immiscible with water. A vegetable oil or vegoil is an oil extracted from oilseeds or another plant source. ... A substance is soluble in a fluid if it dissolves in the fluid. ...


Many solvents can effectively extract uranium, plutonium, or thorium from acid solutions. One solvent used for this purpose is the organophosphate tri-n-butyl phosphate. Jump to: navigation, search General Name, Symbol, Number uranium, U, 92 Chemical series actinides Group, Period, Block ?, 7, f Appearance silvery gray metallic Atomic mass 238. ... General Name, Symbol, Number plutonium, Pu, 94 Chemical series actinides Group, Period, Block ?, 7, f Appearance silvery white Atomic mass (244) g/mol Electron configuration [Rn] 5f6 7s2 Electrons per shell 2, 8, 18, 32, 24, 8, 2 Physical properties Phase solid Density (near r. ... General Name, Symbol, Number thorium, Th, 90 Chemical series transition metals Group, Period, Block ?, 7, f Appearance silvery white Atomic mass 232. ... An organophosphate (sometimes abbreviated OP) is the general name for any organic compound containing phosphorus. ... An effective process to recover, purify, or separate metals is liquid-liquid extraction, or more briefly, solvent extraction. ...


  Results from FactBites:
 
Solvent Extraction (568 words)
The problem with using solvents to extract essential oils is that most of the time, residual solvents or impurities remain in the end product.
This rapid extraction method uses lower temperatures and higher pressure to transform carbon dioxide, a gas, into a liquid.
When the extraction process is complete, the carbon dioxide is returned back to a gaseous state therefore, no residual remains.
  More results at FactBites »


 

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