Fundamental investigation of the drying of solid suspensions

Osman, A., Goehring, L. ORCID: 0000-0002-3858-7295, Patti, A., Stitt, H. and Shokri, N., 2017. Fundamental investigation of the drying of solid suspensions. Industrial & Engineering Chemistry Research, 56 (37), pp. 10506-10513. ISSN 0888-5885

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Abstract

In this work, a comprehensive series of experiments is conducted to investigate the drying behaviour of micro- and nano-sized particle dispersions. To this end, an acoustic levitator was used to study the drying kinetics of single droplets. The temporal evolution of the actual droplets was recorded using a CMOS camera and the solid grains produced at the end of drying were investigated by SEM imaging. At the end of drying, the grains show different morphologies as a function of the particle size, concentration and initial droplet volume. We combine these experimental data to show the drying behaviour is dependent on all the parameters and that the data all collapses when plotted against Péclet number. This resulted in a novel characteristic diagram which allows one to predict the shape of the dried colloidal droplet based on Pé. Our results extend the fundamental understanding of the mechanisms controlling drying of droplet suspensions.

Item Type:	Journal article
Publication Title:	Industrial & Engineering Chemistry Research
Creators:	Osman, A., Goehring, L., Patti, A., Stitt, H. and Shokri, N.
Publisher:	American Chemical Society
Date:	23 August 2017
Volume:	56
Number:	37
ISSN:	0888-5885
Identifiers:	Number Type 10.1021/acs.iecr.7b02334 DOI
Rights:	Copyright © 2017 American Chemical Society
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	05 Oct 2017 09:08
Last Modified:	23 Aug 2018 03:00
URI:	https://irep.ntu.ac.uk/id/eprint/31789

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