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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2017.27.1.43

Permeation Characteristics of the Tubular Membrane Module Equipped wtih the Air Injection Nozzle Tube  

Park, Mi Ja (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Chung, Kun Yong (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Publication Information
Membrane Journal / v.27, no.1, 2017 , pp. 43-52 More about this Journal
Abstract
The air injection nozzle tube was inserted inside of the tubular membrane module to reduce membrane fouling and improve the permeate flux. The average pore size of membrane was $0.1\;{\mu}m$ and the yeast was used as a foulant. All of permeate experiments were started without air injection for the module equipped with the nozzle tube, then carried out continuously with air injection. Finally, the nozzle tube was removed from the module and the permeate was measured without air injection. The measured permeate fluxes were compared to examine the effect of air injection. The fluxes for air injection were consistently maintained or increased. The fluxes of no-air injection with the nozzle tube were greater than those of the empty tubular module. As operating pressure decreased to 0.4 bar, the flux enhancement of air injection based on no-nozzle case increased to 21%. Flux enhancements of air injection were above 30% as the gas/liquid two-phase flow was changed from the stratified-smooth to the intermittent pattern due to increase of gas flowrate.
Keywords
injection nozzles; air injection; yeast solution; tubular membrane; permeate flux; fouling;
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Times Cited By KSCI : 3  (Citation Analysis)
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