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

Journal of Particle Science and Technology

Toraj Mohammadi¹  Ali Vesal¹  Ahmad Rahbar-Kelishami¹ 

[1] Department of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran;

关键词: Liquid-liquid extraction;    nanoparticles;    Mass transfer coefficient;    Hydrophobic;    Hydrophilic;   

DOI  :  10.22104/jpst.2017.2233.1084

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown