Search Results - "Ahualli, S."

Adsorption of Anionic and Cationic Surfactants on Anionic Colloids: Supercharging and Destabilization by Ahualli, S, Iglesias, G. R, Wachter, W, Dulle, M, Minami, D, Glatter, O

“…We present herein a study on the adsorption of anionic (SDS), cationic (CTAB), and nonionic (C12E5) surfactants onto anionic silica nanoparticles. The effects…”
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Modification of the surface of activated carbon electrodes for capacitive mixing energy extraction from salinity differences by Marino, M., Misuri, L., Jiménez, M.L., Ahualli, S., Kozynchenko, O., Tennison, S., Bryjak, M., Brogioli, D.

“…[Display omitted] •CAPMIX is a technique for producing energy from solutions of different salinities.•The produced voltage depends on adsorption of charged…”
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Electrokinetic detection of the salt-free condition in colloids. Application to polystyrene latexes by Delgado, A.V., Ahualli, S., Arroyo, F.J., Jiménez, M.L., Carrique, F.

“…Because of their singular phenomenology, the so-called salt-free colloids constitute a special family of dispersed systems. Their main characteristic is that…”
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Predictions of the maximum energy extracted from salinity exchange inside porous electrodes by Jiménez, M.L., Fernández, M.M., Ahualli, S., Iglesias, G., Delgado, A.V.

“…Graphical abstract [Display omitted] •A study is presented of the electric double layer expansion in porous electrodes.•The energy production associated to sea…”
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Polyelectrolyte-versus membrane-coated electrodes for energy production by capmix salinity exchange methods by Fernández, M.M., Wagterveld, R.M., Ahualli, S., Liu, F., Delgado, A.V., Hamelers, H.V.M.

“…In this paper we analyze the energy and power achievable by means of a recently proposed salinity gradient technique for energy production. The method,…”
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Electrokinetics and stability of silica/clay mixtures at high copper concentration. Implications in the mining of copper by Valenzuela-Elgueta, J., Jimenez, Y.P., Delgado, A.V., Ahualli, S.

“…•The electroacoustic characterization of silica and kaolinite are well distinguishable.•The mobilities of the mixtures of silica and kaolinite behave as…”
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Multi-ionic effects on energy production based on double layer expansion by salinity exchange by Fernández, M.M., Ahualli, S., Iglesias, Guillermo R., González-Caballero, Fernando, Delgado, Ángel V., Jiménez, M.L.

“…[Display omitted] •Extracted energy from salinity exchange is experimentally and theoretically analyzed.•Suspended material is found to have little effect on…”
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Dynamic electrophoretic mobility and electric permittivity of concentrated suspensions of plate-like gibbsite particles by Ahualli, S., González, M.A., Delgado, A.V., Jiménez, M.L.

“…[Display omitted] In this paper we present experimental results on the electrokinetic behavior of planar gibbsite particles in concentrated suspensions. The dc…”
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Iron/Magnetite Nanoparticles as Magnetic Delivery Systems for Antitumor Drugs by Gómez-Sotomayor, Ricardo, Ahualli, S, Viota, Julián L, Rudzka, Katarzyna, Delgado, Angel V

“…In this study we investigate on the possible use of a new kind of magnetic nanostructures as drug delivery systems for anticancer drugs. The starting particles…”
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Dynamic Electrophoretic Mobility of Concentrated Dispersions of Spherical Colloidal Particles. On the Consistent Use of the Cell Model by Ahualli, S, Delgado, A, Miklavcic, S. J, White, L. R

“…This paper outlines a complete and self-consistent cell model theory of the electrokinetics of dense spherical colloidal suspensions for general electrolyte…”
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Use of a cell model for the evaluation of the dynamic mobility of spherical silica suspensions by Ahualli, S., Delgado, A.V., Miklavcic, S.J., White, L.R.

“…In this paper we evaluate the validity of a cell model for the calculation of the dynamic mobility of concentrated suspensions of spheres. The key point is the…”
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Consideration of polydispersity in the evaluation of the dynamic mobility of concentrated suspensions by Ahualli, S., Arroyo, F.J., Delgado, A.V.

“…An illustrative proof of the feasibility of this complete cell model accounting for polydispersity of concentrated suspensions shows an accurate description of…”
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A simple model of the high-frequency dynamic mobility in concentrated suspensions by Ahualli, S., Delgado, A.V., Grosse, C.

“…Because electroacoustic techniques are gaining interest in many fields of colloid science, a number of theories dealing with the phenomenon of electrophoresis…”
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Fundamentals of copper(II) adsorption on phyllosilicate minerals relevant to crud formation in solvent extraction from heap leach liquors by Valenzuela-Elgueta, J., Delgado, A.V., Ahualli, S.

“…Because of the common presence of different silicate minerals, like kaolinite, montmorillonite and muscovite as gangue minerals in the beneficiation of copper…”
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Nonstationary electro-osmotic flow in closed cylindrical capillaries. Theory and experiment by Mishchuk, N.A., Delgado, A.V., Ahualli, S., González-Caballero, F.

“…Both from the experimental and theoretical viewpoints it is of fundamental importance to know precisely which are the fluid flow characteristics in a…”
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Dynamic electrophoretic mobility of concentrated suspensions comparison between experimental data and theoretical predictions by DELGADO, A. V, AHUALLI, S, ARROYO, F. J, CARRIQUE, F

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Tunable pattern structures in dielectric liquids under high dc electric fields by Espin, M.J., Delgado, A.V., Ahualli, S.

“…This work focuses on the abrupt changes that the application of large enough electric fields provokes in the internal structure of hematite/silicone oil…”
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Electroacoustic and dielectric dispersion of concentrated colloidal suspensions by Ahualli, S., Jimenez, M.L., Delgado, A.V., Arroyo, F.J., Carrique, F.

“…The determination of the permittivity of colloidal dispersions has been demonstrated to be a very useful technique to characterize the electrical state of the…”
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Effect of cationic surfactant addition on the electrokinetics and stability of silica/kaolinite suspensions in copper hydrometallurgy conditions by Valenzuela-Elgueta, J., Delgado, A.V., Ahualli, S.

“…•Silica and clay particles in the crud interfere negatively in hydrometallurgy.•Surfactants can be used for promoting the sedimentation of these…”
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Electrical double layers as ion reservoirs: applications to the deionization of solutions by Delgado, A.V., Jiménez, M.L., Iglesias, G.R., Ahualli, S.

“…In this work, we briefly review the basics of the structure of the electrical double layer (EDL), with emphasis on the amount of neutral salt that can be…”
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