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Three Output Membrane Hydrocyclone: Classification and Filtration

Department of Chemical and Materials Engineering, Tamkang University, 151 Ying-chuan Road, Tamsui, Taipei 25137, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Teresa Poerio
Molecules 2019, 24(6), 1116;
Received: 5 March 2019 / Accepted: 19 March 2019 / Published: 21 March 2019
(This article belongs to the Special Issue Sustainability in Membrane Production and Membrane Operations)
PDF [4607 KB, uploaded 21 March 2019]


In this study, through simulation and experimental verification, we proposed a novel hydrocyclone in which a tubular ceramic membrane passed through the overflow outlet to the underflow outlet. The centers of overflow and underflow outlets were tubular membranes equipped with an exit of outside-in filtration, and the overflow the underflow outlets were shaped into annular (donut shape) exits. Thus, this novel hydrocyclone has three outlets, namely the overflow dilute liquid, the underflow concentrated liquid, and clear filtrate. This system enabled higher dilution of hydrocyclone overflow concentration than that in the traditional system. Furthermore, underflow was more concentrated, and we obtained a clear filtrate. Therefore, this device can simultaneously perform classification and filtration, which is valuable for special liquid recycling. For instance, in wafer cutting fluid recovery in solar energy processes, the fluid with more silicon can function as the overflow, the fluid with more silicon carbide can function as the underflow, and the polyethylene glycol (PEG) organic solvent can function as the clear filtrate. View Full-Text
Keywords: classification; filtration; membrane; hydrocyclone; three outputs classification; filtration; membrane; hydrocyclone; three outputs

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Lin, J.-Y.; Wu, R.-M. Three Output Membrane Hydrocyclone: Classification and Filtration. Molecules 2019, 24, 1116.

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