Regulation of Properties of Dispersions for Their Electrokinetic Treatment

Authors

  • Микита Юрійович Боровіцький A.V. Dumansky Institute of colloid and water che­mistry of the NASU, Ukraine
  • Лариса Леонідівна Лисенко A.V. Dumansky Institute of colloid and water che­mistry of the NASU, Ukraine
  • Олена Феліксівна Ринда A.V. Dumansky Institute of colloid and water che­mistry of the NASU, Ukraine
  • Наталія Олексіївна Міщук A.V. Dumansky Institute of colloid and water che­mistry of the NASU, Ukraine

DOI:

https://doi.org/10.20535/1810-0546.2014.3.52783

Keywords:

Disperse system, Electrokinetic potential, Electroosmosis, Electrophoresis, Ph regulation

Abstract

For efficient processing of disperse systems based on the use of external electric fields the highest possible velocities of electrophoresis and electroosmosis for a particular system should be ensured. In case of dispersion, which includes a clay component, the main factor that allows adjusting of its electrokinetic properties is pH of equilibrium solution. In this regard, in present work the kinetics of changes in pH of the pore solution with the introduction of acidic and alkaline solutions (NaOH and HCl) is studied. It is found that at given moisture over a wide concentration range of used electrolyte concentrations the equilibrium pH of the pore solution is achieved after 24 hours. The carried out investigations of electrophoresis velocities and the electrokinetic potentials calculated on their basis showed that the maximum value of the potential is achieved at 8 < pH < 12. The maximum values of stationary electroosmosis velocities correspond to the same range of pH values, however, due to the shape of the dispersion pores and external hydrodynamic resistance of the experimental cell their values are 20–30 % lower than estimated ones

Author Biographies

Микита Юрійович Боровіцький, A.V. Dumansky Institute of colloid and water che­mistry of the NASU

Borovitskii Mykyta Yu., postgraduate student 

Лариса Леонідівна Лисенко, A.V. Dumansky Institute of colloid and water che­mistry of the NASU

Lysenko Larysa L., candidate of sciences (chemistry), senior research fellow 

Олена Феліксівна Ринда, A.V. Dumansky Institute of colloid and water che­mistry of the NASU

Rynda Olena Ph., candidate of sciences (chemistry), research fellow

Наталія Олексіївна Міщук, A.V. Dumansky Institute of colloid and water che­mistry of the NASU

Mishchuk Nataliya O., doctor of chemistry, head of department, senior research fellow

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Published

2014-06-27

Issue

No. 3 (2014): Chemical and Biological Sciences and Technologies

Section

Art

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