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Water purification combines a number of methods to produce potable or drinking water. Downstream processing refers to purification of chemicals, pharmaceuticals and food ingredients produced by fermentation or synthesized by plant and animal tissues, for example antibiotics, citric acid, vitamin E, and insulin.
Lithium chloride is a chemical compound with the formula Li Cl.The salt is a typical ionic compound (with certain covalent characteristics), although the small size of the Li + ion gives rise to properties not seen for other alkali metal chlorides, such as extraordinary solubility in polar solvents (83.05 g/100 mL of water at 20 °C) and its hygroscopic properties.
Salting out (also known as salt-induced precipitation, salt fractionation, anti-solvent crystallization, precipitation crystallization, or drowning out) [1] is a purification technique that utilizes the reduced solubility of certain molecules in a solution of very high ionic strength.
In an aqueous solution, precipitation is the "sedimentation of a solid material (a precipitate) from a liquid solution". [ 1 ] [ 2 ] The solid formed is called the precipitate . [ 3 ] In case of an inorganic chemical reaction leading to precipitation, the chemical reagent causing the solid to form is called the precipitant .
For DNA purification, the pH is usually near 7, at which point all nucleic acids are found in the aqueous phase. Chloroform : Chloroform is stabilized with small quantities of amylene or ethanol , because exposure of pure chloroform to oxygen and ultraviolet light produces phosgene gas.
Solubility of LiCl in various solvents (g LiCl / 100g of solvent at 25 °C) H 2 O: 84.5 Liquid ammonia: 3.02 Liquid sulfur dioxide: 0.012 Methanol: 21 - 41 Formic acid: 27.5 Sulfolane: 1.5 Acetonitrile: 0.14 Acetone: 0.83 Formamide: 28.2 Dimethylformamide: 11 - 28 Reference: Burgess, J. Metal Ions in Solution (Ellis Horwood, New York, 1978 ...
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Lithium hydroxide and lithium peroxide are the salts most commonly used in confined areas, such as aboard spacecraft and submarines, for carbon dioxide removal and air purification. Lithium hydroxide absorbs carbon dioxide from the air by forming lithium carbonate, and is preferred over other alkaline hydroxides for its low weight.