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This research aims to evaluate the efficiency of the cationic polyelectrolyte of Moringa oleifera in removing pollutants from wastewater. A completely randomized design was applied in a unifactorial arrangement, with four treatments and three repetitions. The cationic polyelectrolyte coagulant extracted from the moringa seed had a dose of 1, 2 and 4 mL and aluminum sulfate as a control. A sample of 9000 mL of residual water was taken, the physical characterization was carried out showing 120 mg/L of SST, 43.52 FAU of turbidity and 456 Pt / Co of color. There were no significant differences between treatments according to the ANOVA test (p: 0.707), so it is evidenced that the treatment based on moringa in its different concentrations is a good coagulant to remove contaminants in wastewater. [ABSTRACT FROM AUTHOR]

El artículo discute sobre las propiedades electroquímicas de POE-LiClO4-LLTO y el uso de los electrolitos en las baterías de ion-Licomercialesson. También se enfoca otros aspectos de las electroquímicas de POE-LiClO4-LLTO como electrolitos poliméricos, conductividades electroquímicas iónica de electrolito, Rendimiento electroquímico de prometedores compuestos poliméricos y el aumento de la conductividad de los compuestos poliméricos.

The electrosynthesis and the electroanalytic function of the poly-L-methionine-nano-Au composite were mathematically described and the first one of the processes was described stage by stage. The mathematical models were analyzed by linear stability theory and bifurcation analysis. Basing on the analysis, the stable steady-state conditions, like also oscillatory and monotonic instability conditions were inferred. [ABSTRACT FROM AUTHOR]

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Solid polymeric ionic conductors were sintered by solution casting method for diferent salt weight fractions, by adding the cesium trifluroacetate organometalic salt to PEO poly(oxide-ethilene) polymeric matriz.The ray-X patterns for the polimeric electrolyte membranes show PEO amorphous nature when the concentration and temperature salt increase. The DSC plots show that the melting point of the membrane crystalline part shift to lower temperature when the salt concentration is increased. The TG plots show that the membrane are thermally stable up to 423 K. The morphology study show that the membranes are texturized and homogeneus at a microscopic scale, thus presenting uniform topographic surfaces. The EDAX spectra show a chemical composition that is in concordance with the mixed componets and therefore a polymer salt complex formation. [ABSTRACT FROM AUTHOR]

In solid electrolytes phases of the gel-type, based on poly (vinyl alcohol) (PVOH) and hypophosphorous acid (H3PO2), we have examined the effect of water content and the ambient atmosphere on the phase equilibria and charge transport properties. The membranes were characterized my differential scanning calorimetry, X-ray diffraction and impedance spectroscopy. The membranes with the highest acid content show a stable phase up to approximately 60 °C, being the highest conductivity of the order of 0.1 Scm-1. We have found that the equations valid for electrolytic solutions of completely dissociated acids explain the result satisfactorily fit the experimental data satisfactorily. This separated phase coexists with a polymeric phase with composition PVOH+H3PO2+H2O for the highest acid and water contents. Initial tests of these membranes as proton transfers (PEM) in a hydrogen concentration cells, using ELAT® (E-Tek, Inc.) as catalyst and stainless steel as electrodes, show an open voltage of 400 mV. [ABSTRACT FROM AUTHOR]

Se presenta un estudio sobre la sintetización de un copolímero a partir de un monómero de origen natural (AlgNa) y uno de origen sintθtico (poli(Q9/VP)) y utilizando la tθcnica de coacervación compleja. Mediante Microscopía ¿ptica se constata la forma esfθrica del complejo y la existencia de canales lo cual contribuye a su permeabilidad y potencial como soporte para aplicaciones farmacθuticas.