Pengaruh Volume Alir Udara terhadap Pola Sebaran Gelembung pada Bubble Plume


  • Prihanto Trihutomo State University of Malang



Bubbles, Gas Flowrate, Dispersion Pattern


Bubble plume is the effective way to generate bubbles by air injection from the bottom of bath. Bubble plumes is important for gas transfer process, turbulence generation, collecting the surface-floating substance, and also important to mixing effect in chemical process. This research aims to analyse effect of gas flowrate on bubble dispersion pattern in bubble plume. An experimental apparatus to investigating bubble dispersion consists of a transparent vertical bath is 500 mm length, 24 mm wide and 750 mm height. The bubble generator consists of 110 needles, each needle is 0.25 mm in diameter, installed at the bottom of bath. The experimental method was used in this research. Data were taken by high resolution digital camera. Bubble dispersion pattern was generated by air injection from the bottom of bath. The experiments was done at various gas flowrate that is 4.16 x 10-6m3/s, 6.67 x 10-6m3/s,  10.4 x 10-6m3/s, 18.83 x 10-6m3/s dan 31.6 x 10-6m3/det. Data analyse using ImageJ software to get number, dimension and position of bubble. The experimental results show that increase of gas flowrate causes the number and the diameter of bubble increase and also to widen of diameter interval and bubble dispersion. In each of gas flowrate the bubble trend coalescence intermittently. The intermittent coalescence decrease with the increase of gas flowrate.


Farmer D.M., C. L. MacNeil, dan B.D. Johnson, 1993. Evidence for the importance of bubbles in increasing air-sea gas flux, Nature, 361, 620-623.

Asher, W.E, L.M.Karle, B.J. Higgins, P.J.Farley, I.S.Leifer, dan E.C.Monahan, 1996. The influence of bubble plumes on air-seawater gastransfer velocities. J. Geophys. Res. 101 (C5), 12 027-12 041.

Woolf, D.K., 1997. Bubbles and their role in gas exchange. The Sea Surface and Global Change, P.S. Liss and R.A. Duce, Eds., Cambridge University Press, 17- 205.

Kawase, Y., B. Halard, dan Moo-Young, 1992. Liquid phase mass transfer coefficients in bioreactors. Biotechnol. Bioengng., 39, 1133-1140.

Asselin, C., Y. Comeau, dan Q.A. Ton-That, 1998. Alpha correction factors for static aerators and fine bubble diffusers used in municipal facultative aerated lagoons. Wat. Sci. Tech., 38, 79-85.

Liss, P.s, dan Coauthors, 1997. Physical processes in the microlayer and the air-sea exchange of trace gases. The Sea Surface and Global Change, P. Leifer, De Leeuw, and Cohen-Optical Bubble Measurement Sistem Design 21 Journal of Atmospheric and Oceanic Technology, In Press.

Blanchard, D.C., 1963. Electrification of the atmosphere by particles from bubbles in the sea. Progress in Oceanography, Vol. 1, Pergamon, 73 – 197.

Monahan, E.C., 1986. The ocean as a source for atmospheric particles. The Role of Air-Sea Exchange in Geochemical cycling, P. Buat-Menard, Ed., D. Reidel, 129-163.

De Leeuw, G., 1990. Spray droplet source function: from laboratory to open ocean. Workshop on modelling the fate and influence of marine spray. “Proceedings of a Workshop Held 6-8 june 1990, Luminy, Marseille, France, P.G. Mestayer, et al., Eds., Marine Sciences Institute, Uconn, Groton, 17-28.

Spiel, D., 1998. On the births of film drops from bubbles bursting on seawater surface. J.Geophys. Res., 103 (C11), 24 907-24 918.

Blanchard, D.C, 1989. The ejection of drops from the sea and their enrichment with bacteria and other materials: A review. Estuaries, 12, 127-137.

Thorpe, S.A, 1982. On the clouds of bubble formed by breaking wind-waves in deep water and their role in air-sea gas transfer. Phil.Trans. Roy.Soc.London, A304, 155-210.

Kitaigorodskii, S.A., 1984. Wind-wave effects on gas transfer. Gas Transfer at Water Surfaces, W. Brutsaert and G.H. Jirka, Eds., D. Reidel, 141-170.

Asher, W.E, L.M. Karle, dan B.J. Higgins, 1997. On the difference between bubble-mediated air-water transfer in freshwater and seawater. J.Mar.Res., 55, 1-34.

Colin .C, dan Legendre. D, 2004. Bubble distribution in turbulent shear flows: experiments and numerical simulations on single bubbles.

Khan, M.N.H., Qinglin He, Geoffry Evans, Anh Nguyen, 2004. Dispersion of particles injected through an impinging vertical round jet.