Determination of limiting current density for different electrodialysis modules
-
Natália Káňavová
,
Lubomír Machuča
Abstract
Limiting current density of ammonium nitrate solution in laboratory-, pilot-, and industrial-scale electrodialysis modules were determined to provide a method for the prediction of the limiting current density of ammonium nitrate solutions at any conditions. The current-voltage curve was measured in each case and the limiting current density was evaluated using the dependence of the derivative, dI/dU, on the electric current, I. The limiting current was determined as a current at which the derivative dI/dU equals zero. The developed method enables not only the prediction of the limiting current density but the limiting cut and limiting flux can be determined concurrently at any linear flow velocity of the diluate and inlet ammonium nitrate concentration. It could help to prevent working in the overlimiting region and to avoid undesirable decrease of current efficiency and pH changes. The limiting cut is the maximal cut that can be obtained at certain linear flow velocity and module geometry irrespective of the inlet ammonium nitrate concentration and it is very useful information when designing a new electrodialysis unit for specific application.
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© 2013 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Analytical protocol for investigation of zinc speciation in plant tissue
- Assessment of waxy and non-waxy corn and wheat cultivars as starch substrates for ethanol fermentation
- Effect of quaternary ammonium silane coating on adhesive immobilization of industrial yeasts
- Modeling of supercritical fluid extraction of flavonoids from Calycopteris floribunda leaves
- Determination of limiting current density for different electrodialysis modules
- Dyeing of multiple types of fabrics with a single reactive azo disperse dye
- Physicochemical fractionation of americium, thorium, and uranium in Chernozem soil after sharp temperature change and soil drought
- Ultra-trace determination of Pb(II) and Cd(II) in drinking water and alcoholic beverages using homogeneous liquid-liquid extraction followed by flame atomic absorption spectrometry
- Synthesis, thermal stability, electronic features, and antimicrobial activity of phenolic azo dyes and their Ni(II) and Cu(II) complexes
- Inhibition of copper corrosion in acidic sulphate media by eco-friendly amino acid compound
- Formation of nanostructured polyaniline by dopant-free oxidation of aniline in a water/isopropanol mixture
- Total synthesis of cannabisin F
- Design and synthesis of novel thiopheno-4-thiazolidinylindoles as potent antioxidant and antimicrobial agents
- Microwave-assisted synthesis and antibacterial activity of derivatives of 3-[1-(4-fluorobenzyl)-1H-indol-3-yl]-5-(4-fluorobenzylthio)-4H-1,2,4-triazol-4-amine
- DFT study on [4+2] and [2+2] cycloadditions to [60] fullerene
- Efficient thioacetalisation of carbonyl compounds
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