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|a eng
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|a Warren, Dallas B
|e verfasserin
|4 aut
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|a Effect of surfactants on the kinetics of nickel(II) extraction by 2-hydroxy-5-nonylacetophenone oxime (LIX 84) in an n-heptane/water system
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 18.04.2007
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|a Date Revised 27.12.2005
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The initial reaction rates of the extraction of nickel(II) by 2-hydroxy-5-nonylacetophenone oxime (HNAPO) in a two-phase oil/water system was measured using a total internal reflectance static transfer cell. A two-step reaction mechanism between nickel(II) and HNAPO was found to satisfactorily explain the observed initial reaction rate (R(int)). The addition of neutral surfactants, nonionic octaethylene glycol mono-n-dodecyl ether and zwitterionic n-dodecyldimethyl-3-ammonio-1-propanesulfonate, decreased R(int), which could be accounted for with a competitive surface adsorption model. The presence of the anionic surfactant sodium dodecyl sulfate accelerated and then decelerated R(int), while the cationic surfactant dodecyltrimethylammonium chloride caused a decrease. The effects of these charged surfactants were accounted for using a combination of a competitive surface adsorption model and the Boltzmann distribution of charged species
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|a Journal Article
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|a Grieser, Franz
|e verfasserin
|4 aut
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|a Perera, Jilska M
|e verfasserin
|4 aut
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|a Stevens, Geoff W
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 22(2006), 1 vom: 03. Jan., Seite 213-8
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|x 1520-5827
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|g volume:22
|g year:2006
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|g day:03
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|g pages:213-8
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|d 22
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|h 213-8
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