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An Experimental Study On The Buoyancy-Driven Motion Of Air Bubbles In Square Channels, Vinod Bulusu
An Experimental Study On The Buoyancy-Driven Motion Of Air Bubbles In Square Channels, Vinod Bulusu
Master's Theses and Capstones
The motion of drops and bubbles in confined domains is encountered in several applications such as oil recovery, solvent extraction, paper-making, and microfluidics, among others. In this thesis, the motion of air bubbles in square capillaries moving under the influence of gravity is studied at finite Reynolds numbers. The steady shapes, deformations, film thickness, and velocities of the bubbles as a function of the bubble size are determined experimentally. The bulk fluid phase is either Newtonian, viscoelastic, or a surfactant solution. Bubbles rising in a Newtonian fluid are nearly spherical at lower bubble volumes and become prolate losing their fore …
Degradation Of Methyl Tert Butyl Ether, Priya Saripalli
Degradation Of Methyl Tert Butyl Ether, Priya Saripalli
Master's Theses and Capstones
Methyl tertiary butyl ether (MTBE) is the most common oxygenated fuel additive used in gasoline to improve combustion and reduce air emissions. MTBE is commonly found in natural water as contaminate from gasoline spills. Remediation of the contaminated water is difficult by traditional treatments. In this thesis, degradation of MTBE using Fenton's reaction was studied. The effect of pH, concentration of ferric ammonium sulfate and hydrogen peroxide on the removal efficiency of MTBE was studied and optimum conditions were determined experimentally. A maximum conversion of 90% was achieved when 0.14 M MTBE was reacted with 1.1 g/L ferric ammonium sulfate …
Transesterification Of Triolein By Solid Catalysts, Robert Coggon
Transesterification Of Triolein By Solid Catalysts, Robert Coggon
Master's Theses and Capstones
In this thesis, biodiesel was produced by the transesterification of triolein. Initially a method utilizing gas chromatography was developed to monitor the Novozym 435 catalyzed transesterification. After the procedure was established, experiments were conducted to determine the effect and existence of interactions between reaction parameters including catalyst mass, agitation speed, methanol to triolein ratio, and temperature on yield. A split plot design showed that all single parameters were significant except methanol to triolein ratio. Several two way interactions were found including temperature over ratio, temperature over catalyst mass, and extent of agitation over catalyst mass. The extent of agitation over …