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Association of cationic surfactants to humic acid - Effect on the surface activity
(ELSEVIER, 2006-04-20)
Surface properties of aqueous solutions of mixtures of humic acid, HA, and a series of cationic surfactants, C(n)TAB, have been studied. For a fixed amount of HA, the concentration of surfactant at which micelle-like ...
Extraction of cadmium from aqueous solutions by emulsion liquid membranes using a stirred transfer cell contactor
(SOC BRASILEIRA QUIMICA, 2006-12)
It is studied the extraction of cadmium( II) ions from acidic aqueous solutions using a stirred transfer cell-type emulsion liquid membrane ( ELM) prepared by dissolving in kerosene, with D2EHPA ( an alkylphosphoric acid) ...
Copper Electrodeposition Kinetics Measured by Alternating Current Voltammetry and the Role of Ferrous Species
(Electrochemical Soc, 2016)
Impurities and additives play a key role in copper electrodeposition, in particular in upstream processes such as electrowinning or electrorefining. One common impurity is iron, mostly present as iron species Fe(II) in ...
Semiempirical SCF-MO calculations on the tautomeric equilibrium of histamine in gas phase and in aqueous solution
(Sociedad Chilena de Química, 1998)
The potential energy surface of hstamine monocation is calculated by MNDO types methodologies and by the Reaction Field model at CNDO/2 level, in order to rationalize the experimental findings about the relative abundance ...
Recovery and separation of rhenium and molybdenum from aqueous solutions that simulate mine waters using magnetite nanoparticles functionalized with amine-derivative groups
(Elsevier Ltd, 2019)
© 2019 Elsevier Ltd The recovery and separation of rhenium and molybdenum from acidic aqueous solutions that simulate mine waters is studied through an adsorption process using magnetite nanoparticles functionalized with ...
Apparent molar volume and modeling of volumetric properties of ionic liquid aqueous solutions 1-butyl-3-metilmidazolium chloride [bmim+][cl-] at various temperatures
(Universidad Nacional de Colombia Sede Medellín, 2014-08-26)
Densities of the aqueous solutions of ionic liquid 1-butyl-3 metilmidazolium chloride [Bmim+][Cl-] were determined using a vibrating tube densitometer Anton Paar DMA 5000 at a temperature range between (283.15 - 218.15) ...
Near critical and supercritical fluid extraction of Cu(II) from aqueous solutions using a hollow fiber contactor
(Elsevier, 2013)
The aim of this work is the experimental and theoretical characterization of the mass transfer in a
membrane-based dense gas extraction of metal ions from aqueous solutions using a hollow fiber contactor.
Extractions of ...
Removal of chromium(VI) and chromium(III) from aqueous solution by grainless stalk of corn
(TAYLOR & FRANCIS INC, 2008)
Grainless stalk of corn (GLSC) was tested for removal of Cr(VI) and Cr(III) from aqueous solution at different pH, contact time, temperature, and chromium/adsorbent ratio. The results show that the optimum pH for removal ...
Partial molar volume of anionic polyelectrolytes in aqueous solution
(2007)
In this work the partial molar volumes (V) of different anionic polyelectrolytes and hydrophobically modified polyelectrolytes (PHM) were measured. Polymers like polymaleic acid-co-styrene, polymaleic acid-co-1-olefin, ...
The effects of gamma radiation on aqueous solutions of 2'-3' uridylic acid
(1968)
The free radicals induced by gamma radiation in deaerated aqueous solutions of 2′‐3′ uridylic acid at 77°K have been studied by electron spin resonance techniques. The annealing at 193°K of the OH radical trapped at 77°K ...