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Liquid-Liquid Extraction (Paperback)
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Liquid-Liquid Extraction (Paperback)
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The high prices of precious metals like platinum group metals
(PGM's) have ensured that there is continued interest in the
development of new extractants for the commercial concentration and
separation of these metals. The PGM's platinum, palladium, rhodium,
iridium, osmium and ruthenium together with silver, and gold
generally occur in nature with the major base metals like iron,
copper, nickel and cobalt and wide range of minor elements such as
lead, tellurium, selenium and arsenic and both technical and
commercial considerations demand that the indusial PGM's be
separated from the other metals and each other to high purity, with
high yield and with a high percentage recovery. Liquid- liquid
extraction (LLE), also called solvent extraction (SX), is a process
that allows the separation of two or more components due to their
unequal solubility's in two immiscible liquid phases. In LLE
processes, there are many cases both in analytical and industrial
chemistry where the main objective of separation is achieved by
extraction using a chemical extractant. In analytical and
separation science, this method enjoys a favored position among
separation techniques because of its simplicity.
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