Continuous ion exchange for hydrometallurgy: Purification of Ag(I)–NaCl from divalent metals with aminomethylphosphonic resin using counter-current and cross-current operation
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Purification of Sesquiterpenes from Saussurea LappaRoots by High Speed Counter Current Chromatography
Sesquiterpenes lactones including costunolide and dehydrocostus lactone, were isolated from Saussurea lappa roots, which had exhibited a wide range of biological activities such as anti-cancer, anti-inflammatory, antiulcer, and immunomodulatory activities. High-speed counter-current chromatography (HSCCC) was applied for the rapid preparative isolation of sesquiterpenes lactones from <...
متن کاملPurification of Sesquiterpenes from Saussurea LappaRoots by High Speed Counter Current Chromatography
Sesquiterpenes lactones including costunolide and dehydrocostus lactone, were isolated from Saussurea lappa roots, which had exhibited a wide range of biological activities such as anti-cancer, anti-inflammatory, antiulcer, and immunomodulatory activities. High-speed counter-current chromatography (HSCCC) was applied for the rapid preparative isolation of sesquiterpenes lactones from <...
متن کاملIon Exchange Recovery of Metals from Waste Water of Complex Sulfide Hydrometallurgy
Mijangos, F. and Diaz, M., 1990. Ion exchange recovery of metals from waste water of complex sulfide hydrometallurgy. Hydrometallurgy. 23: 365-375. The treatment by ion exchange ol' waste water from comples sulfide hydrometallurgy has Iwen studied. Several commercial resins have been tested for a range of pH in solution. The equilibrium results with an iminodiacetic resin for the multicomponent...
متن کاملFractal counter-current exchange networks
We construct a general analysis for counter-current exchange devices, linking their efficiency to the (potentially fractal) geometry of the exchange surface and supply network. For certain parameter ranges, we show that the optimal exchanger consists of densely packed pipes which span a thin sheet of large area, which may be crumpled into a fractal surface and supplied with a fractal network of...
متن کاملPurification of two triterpenoids from Schisandra chinensis by macroporous resin combined with high-speed counter-current chromatography.
A method for preparative purification of corosolic acid and nigranoic acid from Schisandra chinensis (SC) was established using a combination of macroporous absorption resin column separation and high-speed counter-current chromatography (HSCCC). The crude extracts obtained from SC using 70% ethanol were separated on a macroporous resin column and then eluted with a graded ethanol series. The 7...
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ژورنال
عنوان ژورنال: Hydrometallurgy
سال: 2014
ISSN: 0304-386X
DOI: 10.1016/j.hydromet.2013.11.012