TY - JOUR

T1 - Hydrodynamic performance of a pulsed extraction column containing ZnO nanoparticles

T2 - drop size and size distribution

AU - Amani, Pouria

AU - Amani, Mohammad

AU - Rahman, Saidur

AU - Yan, Wei-Mon

N1 - This is the author’s version of a work that was accepted for publication in Chemical Engineering Research and Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemical Engineering Research and Design, 121, 2017 DOI: 10.1016/j.cherd.2017.03.017

PY - 2017/5

Y1 - 2017/5

N2 - This article concerns the influence of different ZnO nanoparticle concentrations (0.001, 0.003, 0.005 and 0.01 wt%) along with operating parameters (i.e., pulsation intensity and flow rate of dispersed and continuous phases) and physical properties on mean drop size and drop size distribution in a horizontal pulsed perforated-plate extraction column for the toluene-acetone-water and butyl acetate-acetone-water systems (mass transfer direction from the dispersed phase to the continuous phase). According to the results, it is observed that the addition of nanoparticles has a remarkable influence on breakage and coalescence of drops and consequently their size distribution. Accordingly, adding nanoparticles reduces the interfacial tension due to internal turbulence caused by nanoparticles’ Brownian motion inside each drop. It is found that drop size distribution will shift to the left and the density of small droplets will increase in the presence of ZnO nanoparticles in the column. Furthermore, new correlation is proposed to predict mean drop size in terms of operating parameters, physical properties and nanoparticle concentration. It is also found that the maximum entropy principle is suitable to predict drop size distribution in a horizontal extraction column.

AB - This article concerns the influence of different ZnO nanoparticle concentrations (0.001, 0.003, 0.005 and 0.01 wt%) along with operating parameters (i.e., pulsation intensity and flow rate of dispersed and continuous phases) and physical properties on mean drop size and drop size distribution in a horizontal pulsed perforated-plate extraction column for the toluene-acetone-water and butyl acetate-acetone-water systems (mass transfer direction from the dispersed phase to the continuous phase). According to the results, it is observed that the addition of nanoparticles has a remarkable influence on breakage and coalescence of drops and consequently their size distribution. Accordingly, adding nanoparticles reduces the interfacial tension due to internal turbulence caused by nanoparticles’ Brownian motion inside each drop. It is found that drop size distribution will shift to the left and the density of small droplets will increase in the presence of ZnO nanoparticles in the column. Furthermore, new correlation is proposed to predict mean drop size in terms of operating parameters, physical properties and nanoparticle concentration. It is also found that the maximum entropy principle is suitable to predict drop size distribution in a horizontal extraction column.

KW - Mean drop size

KW - Drop size distribution

KW - Horizontal extraction column

KW - ZnO nanoparticles

U2 - 10.1016/j.cherd.2017.03.017

DO - 10.1016/j.cherd.2017.03.017

M3 - Journal article

VL - 121

SP - 275

EP - 286

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

SN - 0263-8762

ER -