Browsing by Subject zeta potential

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  • 4213-97-8270-1-10-20180320.pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh; Rudolf, Sprik (2018)

  • The streaming potential coefficient of liquid-rock systems is theoretically a very complicated function depending on many parameters including temperature, fluid concentration, fluid pH, as well as rock parameters such as porosity, grain size, pore size, and formation factor etc. At a given porous media, the most influencing parameter is the fluid conductivity or electrolyte concentration. Therefore, it is useful to have an empirical relation between the streaming potential coefficient and electrolyte concentration. In this work, the measurements of the streaming potential for four unconsolidated samples (sandpacks) saturated with four monovalent electrolytes at six different electrol...

  • 4090-97-8197-1-10-20180103.pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh (2017)

  • The measurements of the zeta potential of five consolidated samples including natural and artificial ceramic rocks saturated with 5.0×10-3 M NaCl electrolyte at different temperatures have been reported. The zeta potential obtained in this work is always negative and increases in magnitude with increasing temperature for all samples (an average increase of the zeta potential of 0.4 mV/ oC in magnitude). The experimental results are in good agreement with previously published data. The experimental data is then explained by a theoretical model. It is shown that the model is able to reproduce the main trend of the experimental data from our work and from published articles.

  • document(7).pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh; Rudolf, Sprik (2015)

  • The zeta potential of a solid-liquid interface in porous media is an important surface characterization quantity for geophysical applications or environmental applications, for example. The zeta potential in porous media is normally measured by some techniques such as streaming potential, streaming current. In this work, we use electroosmosis to measure the zeta potential for consolidated porous samples including natural and artificial rocks saturated with NaCl solutions. The measurements show that the values of the zeta potential deduced from our electroosmosis measurements are always smaller than those of the corresponding samples deduced from the reliable streaming potential measur...

  • 45.pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh; Sprik, Rudolf (2015)

  • Electrokinetic phenomena are induced by the relative motion between a fluid and a solid surface and are directly related to the existence of an electric double layer between the fluid and the solid grain surface. Electrokinetics in porous media plays an important role in geophysical applications and environmental applications. The zeta potential is one of the key parameters in electrokinetics. The zeta potential of liquid-rock systems depends on many parameters such as mineral composition of rocks, fluid properties etc. Therefore, the zeta potential is different for various rocks and liquids. In order to measure the zeta potential for fluid saturated porous rocks, streaming potential ...

Browsing by Subject zeta potential

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 4 of 4
  • 4213-97-8270-1-10-20180320.pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh; Rudolf, Sprik (2018)

  • The streaming potential coefficient of liquid-rock systems is theoretically a very complicated function depending on many parameters including temperature, fluid concentration, fluid pH, as well as rock parameters such as porosity, grain size, pore size, and formation factor etc. At a given porous media, the most influencing parameter is the fluid conductivity or electrolyte concentration. Therefore, it is useful to have an empirical relation between the streaming potential coefficient and electrolyte concentration. In this work, the measurements of the streaming potential for four unconsolidated samples (sandpacks) saturated with four monovalent electrolytes at six different electrol...

  • 4090-97-8197-1-10-20180103.pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh (2017)

  • The measurements of the zeta potential of five consolidated samples including natural and artificial ceramic rocks saturated with 5.0×10-3 M NaCl electrolyte at different temperatures have been reported. The zeta potential obtained in this work is always negative and increases in magnitude with increasing temperature for all samples (an average increase of the zeta potential of 0.4 mV/ oC in magnitude). The experimental results are in good agreement with previously published data. The experimental data is then explained by a theoretical model. It is shown that the model is able to reproduce the main trend of the experimental data from our work and from published articles.

  • document(7).pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh; Rudolf, Sprik (2015)

  • The zeta potential of a solid-liquid interface in porous media is an important surface characterization quantity for geophysical applications or environmental applications, for example. The zeta potential in porous media is normally measured by some techniques such as streaming potential, streaming current. In this work, we use electroosmosis to measure the zeta potential for consolidated porous samples including natural and artificial rocks saturated with NaCl solutions. The measurements show that the values of the zeta potential deduced from our electroosmosis measurements are always smaller than those of the corresponding samples deduced from the reliable streaming potential measur...

  • 45.pdf.jpg
  • Article


  • Authors: Luong, Duy Thanh; Sprik, Rudolf (2015)

  • Electrokinetic phenomena are induced by the relative motion between a fluid and a solid surface and are directly related to the existence of an electric double layer between the fluid and the solid grain surface. Electrokinetics in porous media plays an important role in geophysical applications and environmental applications. The zeta potential is one of the key parameters in electrokinetics. The zeta potential of liquid-rock systems depends on many parameters such as mineral composition of rocks, fluid properties etc. Therefore, the zeta potential is different for various rocks and liquids. In order to measure the zeta potential for fluid saturated porous rocks, streaming potential ...