The aim of this study is to calculate the through-plane thermal conductivity commercial polymeric ion-exchange membranes. Different membranes were considered influence membrane properties on values. In particular we focused reinforcement, ion exchange capacity and density thickness. For purpose, use a simple experimental setup numerical simulation estimate from temperature profiles. Once system...

two poly(oxyethylene) derivatives 1.10-bis(2'-benzoic acid)-1,4,7,1-tetradecane (l1) and 1,7-bis(2'-benzoic acid)-1,4,7-trioxaheptane (l2) were used as suitable ionophores for the preparation of potassium-selective pvc-membrane electrodes. the resulting electrodes based on l1 and l2 exhibit linear responses to the activity of k+ ions within the concentration ranges of 3.1´10-5 -2.7´10-2 m and 2...

Possible mechanisms for overlimiting current (OLC) through aqueous ion-exchange membranes (exceeding diffusion limitation) have been debated for half a century. Flows consistent with electro-osmotic instability have recently been observed in microfluidic experiments, but the existing theory neglects chemical effects and remains to be quantitatively tested. Here, we show that charge regulation a...

a total of 148 groundwater samples were collected from bore wells from thirumanimuttar sub-basin for two seasons to identify major geochemical process activated to alter groundwater chemistry. the study revealed relationships with the lithology and anthropogenic process. groundwater in the region was dominated by na – ca – mg and cl and hco3 types. the (ca +mg) versus tz+ plot for both seas...

Urban landfill leachate is a high strength wastewater characterized by high concentrations of recalcitrant organic compounds, ammonia and, increasingly, arsenic. The aims of this study were the review on membrane bioreactor, ion exchange and adsorption method for landfill leachate treatment. Membrane bioreactor (MBR) can be used for wastewater and landfill leachate treatment. The most important...

The modulation of the ion-fluxes across a polymeric membrane is important for designing attractive methodologies. As an alternative to commonly used dynamic electrochemistry approaches, light can be as external stimulus and provides very convenient way manipulate ions release and/or extraction into membrane. Herein, we designed solid-contact ion-selective sensor that exhibits response by irradi...

The hydrophobic proteins of plant plasma membrane still remain largely unknown.  For example in the Arabidopsis genome, receptor-like kinases (RLKs) are plasma membrane proteins, functioning as the primary receptors in the signaling of stress conditions, hormones and the presence of pathogens form a diverse family of over 610 genes. A limited number of these proteins have appeard in pr...

For the first time, based on joint application of fine-porous and cell models, a theoretical analysis changing transport structural characteristics heterogeneous polymeric ion-exchange membranes (IEMs) MK-40, MA-40, MA-41 after exposure to elevated temperatures in water aggressive media (H2SO4 NaOH solutions), as well long-term processing electrodialyzers various types, was carried out. The stu...