Separation Characteristics of the Hollow Fiber Membrane Module Using Water Mixed with Small Sized Bubbles Composed of Synthesized Exhalations

Authors: Pil Woo Heo, Hyunse Kim

Abstract:

Fish can breathe freely under water using dissolved oxygen and survive for a long time without going out of the water. A human can also survive under water using dissolved oxygens, if properly used. He needs more dissolved oxygens than the fish, so efficient separation device is required. Since the amount of oxygen contained in water is weak, a person needs a lot of surface area to breathe in water, which leads to a large-sized device. It can be applied to various fields if it is developed as a device which is advantageous to carry in small size. In this paper, we have carried out a study on the effective use of exhalations and proposed the separation characteristics of the gas containing dissolved oxygen in the state of mixed gas considering the components of exhalation. The system was configured to have a fine bubble when the gas mixture injected into the front end of the separator. While the fluid containing the fine bubbles was supplied to the separator, the dissolved gas contained in water was separated using a vacuum pump. The gas separation amount of the separating apparatus with respect to the supplied mixed gas was measured. The amounts of separation of dissolved gas were increased as the amounts of mixed gas supplied were increased.

Keywords: Small sized bubbles, synthesized exhalations, separation, hollow fiber module.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1317322

References:

[1] N.J. Shirtcliffe, G. McHale, M.I. Newton, C.C. Perry and F.B. Pyatt, "Plastron properties of a superhydrophobic surface," Applied Physics Letters, pp.　104106-1-104106-2, 2006.
[2] I. Ieropoulos, C. Melhuish and J. Greenman, "Artificial gills for robots: MFC behaviour in water," Bioinsp. Biomim., pp.　S83-S93, 2007.
[3] J.K. Lee, H.H. Kung and L.F. Mockros, "Microchannel Technologies for Artificial Lungs: (1) Theory," ASAIO Journal, pp.　372-382, 2008.
[4] M.C. Kung, J.K. Lee, H.H. Kung and L.F. Mockros, "Microchannel Technologies for Artificial Lungs: (2) Screen-filled Wide Rectangular Channels," ASAIO Journal, pp.　383-389, 2008.
[5] J.K. Lee, M.C. Kung, H.H. Kung and L.F. Mockros, "Microchannel Technologies for Artificial Lungs: (3) Open Rectangular Channels," ASAIO Journal, pp.　390-395, 2008.
[6] J.H. Park, I.S. Park, S.N. Yun, Y.B. Ham, P.W. Heo and S.C. Jang, “A collector of dissolved air using centrifugal separation for underwater breathing,” International Journal of Automation Technology, vol. 9, no. 1, pp. 76-82, 2015.
[7] P.W. Heo, “Separation characteristics of dissolved gases from water using a portable separation system with hollow fiber membrane modules,” International Journal of Science and Engineering Investigations, vol. 4, no. 46, pp. 71-74, 2015.
[8] P.W. Heo, “Increasing separation of dissolved gases using a portable system with hollow fiber membrane modules including two inlets,” International Research Journal of Engineering and Technology, vol. 2, no. 8, Nov., 2015.
[9] P.W. Heo, "Separation characteristics of separation devices using inlet water mixed with exhalation gases without a compressor," Journal of the Korean Society of Marine Engineering, vol. 40, pp. 842-846, 2016.
[10] P.W. Heo, "Separation characteristics of dissolved gases from water concurrently variable mixed with exhalations for the hollow fiber membrane,” International Journal of Chemical, Molecular," Nuclear, Materials and Metallurgical Engineering, vol. 11, no. 8, pp. 567-570, 2017.