Physical insights of salt transfer through solvent polymeric membranes by means of electrochemical methods
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Abstract:
A combined voltammetric study of the joint transfer of the two constituting ions of a water-soluble salt has been carried out using normal-pulse voltammetry, linear-sweep voltammetry and square-wave voltammetry in a system with two liquid–liquid polarized interfaces. As a result, we have explained the voltammetric features that allow us to distinguish this uptake from that corresponding to two equally charged ions, in spite of the appearance in both situations of two current peaks with the same sign in both square-wave and linear-sweep voltammograms, and we have found that linear-sweep voltammetry and square-wave voltammetry complement each other excellently.Keywords:
Polymeric membrane
Nanofiltration
Polymeric membrane
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Foamed Polystyrene was dissolved in natural organic solvents and was settled by liquid precipitant,the natural organic solvents and precipitant are mutual solvent.A sort of additives was selected to separate solvent and precipitant.Solvent,precipitant,additive are all recycable.The percent recovery of the three solvents can get to above 96%.
Polystyrene
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Organic synthesis using biocatalysis has been possible by performing reactions in predominantly water-free media, or in water-organic biphasic systems. If whole cells are used for water-organic biphasic systems, organic solvent tolerance is required. Several methods were used for the estimation of organic solvent tolerance in microorganisms. We considered whether the concentration of an organic solvent could be varied in the evaluation of organic solvent tolerance on the solid medium. For this, a method of dilution with a low cytotoxic organic solvent was employed and the cytotoxicity of the organic solvent was decreased with the dilution.
Dilution
Hexadecane
Organic Synthesis
Organic acid
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Polystyrene
Hildebrand solubility parameter
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Nanofiltration
Polymeric membrane
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A model is proposed to represent the enzyme activity ratios in water – organic solvent mixtures at various temperatures. The prediction capability of the model was evaluated employing aldehyde oxidase as a model enzyme in seven water – organic solvent mixtures at 25, 35 and 45 °C by using mean percentage deviation (MPD). The MPD obtained for each water – organic solvent mixture was 6.2%. A general model was also proposed employing the Abraham solvent parameters with MPD as 19.5%. The proposed models could be used in industry for speeding up the process designs where water – organic solvent mixtures at various temperatures were employed.
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Correction for 'Proving and interpreting the spontaneous formation of bulk nanobubbles in aqueous organic solvent solutions: effects of solvent type and content' by Ananda J. Jadhav et al., Soft Matter, 2020, 16, 4502-4511, DOI: 10.1039/D0SM00111B.
Content (measure theory)
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The present paper reports an organic solvent-induced controllable crystallization of a water-soluble inorganic salt Na3[Au(SO3)2] into ultralong nanobelts and hierarchical microstructures of one-dimensional (1D) nanowires. It was found that the morphology of the resulting crystals can be fine tuned by simply varying the experimental parameters, such as the ratios of water to organic solvent and gold salt to organic solvent, as well as the type of organic solvent.
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