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Vesal, A., Rahbar-Kelishami, A., Mohammadi, T. (2017). Investigation of mass transfer coefficients in irregular packed liquid-liquid extraction columns in the presence of various nanoparticles. Journal of Particle Science & Technology, 3(2), 113-120. doi: 10.22104/jpst.2017.2233.1084
Ali Vesal; Ahmad Rahbar-Kelishami; Toraj Mohammadi. "Investigation of mass transfer coefficients in irregular packed liquid-liquid extraction columns in the presence of various nanoparticles". Journal of Particle Science & Technology, 3, 2, 2017, 113-120. doi: 10.22104/jpst.2017.2233.1084
Vesal, A., Rahbar-Kelishami, A., Mohammadi, T. (2017). 'Investigation of mass transfer coefficients in irregular packed liquid-liquid extraction columns in the presence of various nanoparticles', Journal of Particle Science & Technology, 3(2), pp. 113-120. doi: 10.22104/jpst.2017.2233.1084
Vesal, A., Rahbar-Kelishami, A., Mohammadi, T. Investigation of mass transfer coefficients in irregular packed liquid-liquid extraction columns in the presence of various nanoparticles. Journal of Particle Science & Technology, 2017; 3(2): 113-120. doi: 10.22104/jpst.2017.2233.1084

Investigation of mass transfer coefficients in irregular packed liquid-liquid extraction columns in the presence of various nanoparticles

Article 6, Volume 3, Issue 2, Spring 2017, Page 113-120  XML PDF (957 K)
Document Type: Research Paper
DOI: 10.22104/jpst.2017.2233.1084
Authors
Ali Vesal; Ahmad Rahbar-Kelishami ; Toraj Mohammadi
Department of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
Abstract
In the present study, the effect of various nanofluids on mass transfer coefficients in an irregular packed liquid-liquid extraction column was investigated. The chemical system of toluene–acetic acid–water was used. 10 nm SiO2, TiO2 and ZrO2 nanoparticles with various concentrations were dispersed in toluene-acid acetic to provide nanofluids. The influence of concentration and hydrophobicity/hydrophilicity of nanoparticle on mass transfer coefficient was discussed. The experimental results show that the mass transfer coefficient enhancement depends on the kind and the concentration of nanoparticles. The maximum enhancement of 35%, 245% and 207% was achieved for 0.05 vol% of SiO2, TiO2 and ZrO2 nanofluids, respectively. A new conceptual model was proposed for prediction of the effective diffusivity as a function of nanoparticle concentration, drop size and drop Reynolds number.

Highlights
  • In this study, the effect of various nanoparticles on the mass transfer coefficient was investigated.
  • Maximum enhancements in mass transfer coefficient of 35%, 245% and 207% were achieved in the presence of SiO2, TiO2 and ZrO2, respectively.
  • A new conceptual model was proposed for prediction of the effective diffusivity as a function of nanoparticle concentration, drop size and drop Reynolds number with a high accuracy. 
Keywords
Liquid-liquid extraction; nanoparticles; Mass transfer coefficient; Hydrophobic; Hydrophilic
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