Theoretical Investigation on Particle Brownian Motion on Micro-air-bubble Characteristic in H2O Solvent

2nd Materials Research Society of Indonesia Meeting

Putri, Irana Eka^1 ; Redhyka, Grace Gita^1

Technical Implementation Unit of Instrumentation Development, Indonesia Institute of Sciences, Bandung

40135, Indonesia^1

关键词: Air bubbles;    Bubble velocities;    High potential;    Random motions;    Spherical shape;    Submicron scale;    Surfactant molecules;    Theoretical investigations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/214/1/012003/pdf
DOI  :  10.1088/1757-899X/214/1/012003

来源: IOP

【 摘 要 】

Micro-air-bubble has a high potential contribution in waste water, farming, and fishery treatment. In this research, submicron scale of micro-air-bubble was observed to determine its stability in H2O solvent. By increasing its stability, it can be used for several applications, such as bio-preservative for medical and food transport. The micro-air-bubble was assumed in spherical shape that in incompressible gas boundary condition. So, the random motion of particle (Brownian motion) can be solved by using Stokes-Einstein approximation. But, Hadamard and Rybczynski equation is promoted to solve for larger bubble (micro scale). While, the effect of physical properties (e.g. diffusion coefficient, density, and flow rate) have taken important role in its characteristics in water. According to the theoretical investigation that have been done, decreasing of bubble velocity indicates that the bubble dissolves away or shrinking to the surface. To obtain longevity bubble in pure water medium, it is recomended to apply some surfactant molecules (e.g. NaCl) in micro-air-bubble medium.