التفاصيل البيبلوغرافية
| العنوان: |
Experimental analysis on stabilization of zirconia microparticles suspension using nanoparticle halo mechanism. (English) |
| المؤلفون: |
Keramati, Hadi, Hassan Saidi, Mohammad, Zabetian, Mohammad |
| المصدر: |
Modares Mechanical Engineering; 2015, Vol. 15 Issue 5, p81-88, 8p |
| مصطلحات موضوعية: |
ZIRCONIUM oxide, NANOPARTICLES, STABILITY (Mechanics), TURBIDITY, ZETA potential |
| مستخلص: |
In many industrial processes, in the middle stages of production, the final product or residuals contain aqueous suspensions. The instability of suspensions is one of the main challenges towards the mentioned processes. The present study is the result of an experimental investigation that analyzed the effect of nanoparticles on the stabilization of microsuspension. The effect of electrostatic behavior of micro and nanoparticles on the performance of the stabilization method by generation of nanoparticle halos was studied experimentally. The turbidity of microparticle suspension was measured before and after addition of nanoparticles at different electrostatic conditions. The results of experiments show that for all situations, the addition of nanoparticles increases the repulsive force between particles. The pertinent stability is due to the formation of nanoparticle halos, which have been observed experimentally. Nanoparticle halos decrease the Wan der Waals attractive force and increase the electrostatic charge of microparticles, consequently increasing the stability of the resultant suspension. The strength of the stability varies with difference in electrostatic situations due to the difference in the electric charge. When microparticles have relatively low electric charge, the potential sink around them is deeper and thus more nanoparticles form halos. The minimum stabilization also occurs when the microparticles have relatively high electric charge that increases the repulsive force between micro and nanoparticles. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
