Concentration polarization
Investigation of concentration polarization in a cross-flow nanofiltration membrane: Experiment and CFD modelling
... Numerous researches have been investigated on the mass transfer phenomena and hydrodynamics for the fluid in the vicinity of the membrane surface by the mathematical modelling and simulation. Due to complexities involved ...
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Concentration Polarization pdf
... centration polarization modulus is smaller than 1 (boundary layer depletion) if the permeating com- pound is enriched in the permeate and larger than 1 (boundary layer build-up) if the permeating com- pound is ...
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Concentration Polarization to Measure the Nanopore Accessibility of Fluid Catalytic Cracking Particles
... ionic concentration polarization: the electrical double layers of the nanopores of the FCC par- ticle get thinner for higher concentrations of KCl, decreasing the surface conductivity of the EDLs and making ...
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Paper-based ion concentration polarization device for selective preconcentration of muc1 and lamp-2 genes
... Recently, novel biomolecules separation and detection methods based on ion concentration polarization (ICP) phe- nomena have been extensively researched due to its high amplification ratio and high-speed ...
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The Estimation of Feed Solution Composition Influence on Concentration Polarization Layer Resistance during Reverse Osmosis | Journal of Engineering Sciences
... on concentration polarization layer resistance value under experimental conditions in particularly considered salts and their concentrations was lower than the influ- ence of hydrodynamic conditions which ...
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Crossflow Filtration of Sodium Chloride Solution by A Polymeric Nanofilter: Minimization of Concentration Polarization by a Novel Backpulsing Method
... The tests were classified in three parts. At first, the effect of the feed concentration on the permeate flux and the removal efficiency was evaluated. To this purpose, in different feed concentrations (0.1, 0.3, ...
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Synthesis and Characterization of Ni-Co Electrocatalyst for Hydrogen Evolution Reaction in Acidic Media
... Fig. 5 shows that the resistance of the solution is very small, and there is no straight line at a 45° angle in the low frequency region, illustrating no concentration polarization of reactive ions occurs. ...
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Exploring the pore charge dependence of K+ and Cl permeation across a graphene monolayer:a Molecular Dynamics study
... The atomistic level insight provided by molecular dynamics not only sheds light on the details of the des- olvation process, but it also reveals a rich picture not fore- seen by simplied physical models. Our simulations ...
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The Research of the Flow Characteristics in Spiral Membrane Separator
... Abstract: The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits ...
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Single-electrolyte isotachophoresis : on-chip analyte focusing and separation
... of concentration polarization regimes could be achieved just by tuning the microvalve pressure, while only requiring a single fluidic channel and a single electrolyte ...as concentration ...
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Investigations of the influence of dextran on sugar cane quality and sugar cane processing in Kenana sugar factory
... the concentration of dextran in sugar cane and other factory ...the concentration of dextran in crusher juice (from filed), crusher juice from factory, mixed juice, lime juice and clarified ...the ...
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Laboratory evaluation of five assay methods for vancomycin: bioassay, high pressure liquid chromatography, fluorescence polarization immunoassay, radioimmunoassay, and fluorescence immunoassay
... We compared the precision and accuracy of five methods used to measure the concentration of vancomycin in bioassay, high-pressure liquid chromatography, fluorescence polarization immunoa[r] ...
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Influence of pH and Chloride Ions on Electrochemical Behavior of Brass in Alkaline Solution
... The parameters presented in Table 2 are obtained by the analysis of the polarization curves shown in Fig 3. It can be seen that Tafel slopes are very similar (83.8-87.9mVdecade -1 ) in pH interval from 8.0 to ...
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Effect of Ferrous Gluconate Inhibition on the Electrochemical Behaviour of Mild Steel in 3.5% NaCl
... The mild steel coupons with dimensions 12 x 12 x 2 mm were cut from a sheet. The chemical composition (wt %) of the mild steel coupons is given in Table 1. Before use, the samples were polished successively by using ...
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Effects of Water Soluble Rosin on the Corrosion Inhibition of Carbon Steel
... concentration indicating that the additive compound can be used as corrosion inhibitor of mild steel. The values of inhibition efficiency increased markedly with increase of inhibitor concentration ...
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Degradation Behaviour of Aluminium in 2M HCl/HNO3 in the Presence of Arachis hypogeae Natural Oil
... potentiodynamic polarization was used to characterize the corrosion rate of the aluminium in Arachis hypogeae-acidic ...solution. Polarization test were carried out in two different solutions consisting of ...
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Investigation of Novel Gemini Surfactant with Long Chain Alkyl Ammonium Headgroups as Corrosion Inhibitor for Copper in 3.5% NaCl
... polarization curves move directly to lower current densities, and the corrosion rate of copper has been decreased significantly. Anode curves are nearly overlap and each cathode curve is exactly parallel with the ...
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Enhanced Performanced Of Circular Polarized Antenna By Using Metasurface
... AMC - Artificial Magnetic Conductor EBG - Electromagnetic Band Gap PRS - Partial Reflective Surface RIS - Reactive Impedance Substrates FSS - Frequency Selective Structure LHCP - Left Hand Circular Polarization ...
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Synthesis of Polyaspartic Acid/Chitosan Graft Copolymer and Evaluation of Its Scale Inhibition and Corrosion Inhibition Performance
... the concentration increased. When the PASP/CS concentration is at 25 mg/L, the corrosion inhibition efficiency reached to the maximum 82%, and the inhibition efficiency of PASP was 47%, which may be due to ...
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Standing Wave Effects in Microwave Ellipsometry
... Figure 5. Polar plot of the source irradiance distribution in the horizontal plane where kx = 0.7 radian. Diamonds indi- cate vertical electric polarization; crosses indicate horizontal electric ...
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