Engineering Commons^™

Adsorption On Activated Flyash, John William Kubarewicz

Theses

An experimental study was undertaken to compare the adsorptive characteristics of activated carbon, flyash, and activated flyash. Due to the contradictory evidence available in the literature, emphasis was placed on the effect of acid activation on the physical properties of the adsorbent. The experiment consisted of two parts; batch isotherm studies, and continuous column operations. An artificial sewage composed of a mixture of deionized water and beef broth was used as the adsorbate. This solution was prepared daily and exerted a COD of 225 ± 30 mg/l. Flyash activation was found to increase the degree of adsorption indirectly rather than …

The Chemical Effect Of Ultrasound On Cyanide Solutions, Nabil R. Zaki

Theses

An experimental study was undertaken to investigate the chemical effects of high intensity ultrasonic radiation on cyanide solutions. The effects of aeration, concentration of cyanide and temperatures on the reaction rate are investigated. The experiment was preformed in a 30 mm pyrex tube immersed at a fixed height in a constant volume water bath. Ultrasonic energy was applied through the use of a transducer epoxied at the bottom of the water bath. The power inputs to the transducer were 40W (27KHz) and 100W (21KHz).

At a power of 40W, ultrasound had no chemical effect on cyanide solutions. At 100W, hydrogen …

Computer Program For Binary Distillation Using The Method Of Pochon-Savarit With Enthalpy Data Calculated By Lagrange Interpolation, Joseph J. Rogus

Theses

This thesis presents a Fortran Computer Program to solve binary distillation problems. The solution is obtained by the method of Pochon-Savarit which is based upon graphical use of an enthalpy-concentration diagram. The enthalpy data in this program is calculated using Lagrange interpolation. This is accomplished by utilizing the Lagrange interpolation to get values for the enthalpy of the vapor until we find that value which lies on the same line as the enthalpy of the liquid from the preceding tray and its corresponding del point.

The required input data consist of liquid-vapor equilibrium data, heat of solution data with the …

The Synthesis Of New Maleimide Addition Polymer Precursors, Richard B. Brown

Chemistry & Biochemistry Theses & Dissertations

1H-2,3-dimethylpyrrolo(1,2-a) benzimidazol-l-one (27) and 1H,9H- 2,3,7,8-tetramethyl-bispyrrolo(1,2-a:6,7-a')benzodiimidazo1-1,9-dione (32) have been synthesized from dimethylmaleic anhydride and o-phenylenediamine and 1,2,4,5-tetraaminobenzene, respectively. The presence of reactive olefinic double bonds in the synthesized compounds was of interest as a site for possible addition polymerization.

The synthetic route involved, in both cases, a simple nucleophilic substitution reaction between the diamine(or tetraamine) and the anhydride to form an intermediate amide-acid-amine which rapidly cyclized to the imide amine. The final ring closure required more rigorous conditions and occurred at melt reaction temperatures.

Separation Of Isomers Via Thermal Parametric Pumping, Vincent J. D'Emidio

Theses

Continuous and semicontinuous thermal parametric pumps for separating isomers were experimentally investigated using the model system glucose-fructose-water on a cation exchange resin adsorbent. A comparison was made between the experimental data and the calculated results by a method based on an equilibrium theory. The method invokes the assumptions that a multicomponent mixture contains a series of pseudo binary systems. Each binary system consists of one of the solutes as one component and the common inert solvent as the other component. It has been shown that under certain conditions, the pump with feed at the enriched end has the capacity for …

The Thermal Dehydration Of Magnesium Sulfate Hexahydrate (Mgso3.6h2o) And Magnesium Sulfite Trihydrate (Mgso3.3h2o), Raafat F. Abdel-Malek

Theses

The thermal dehydration of MgSO₃.3H₂O and MgSO₃.6H₂O have been studied by differential thermal analysis, differential scanning calorimetry and thermal gravimetric analysis.

Similar studies by other groups led to contradictory conclusions. In this investigation, these results were reconciled and it was concluded that MgSO₃.6H₂O, under equilibrium conditions, dehydrates in two steps through the intermediate formation of MgSO₃.3H₂O.

One consequence of this work is the development of a simple analytical procedure, using TGA, for the quantitative determination of both hydrates in mixtures and in the presence …

Transient Phenomena Of Polymer Solutions, Nikolaus Zwetkow

Theses

With the aid of a rotational viscometer, several transient phenomena were studied with different polymer solutions. In order to be acquainted with the operations of the rotational viscometer, viscosity measurements were made on polystyrene solution of a 7.14 wt. % NBS-2-35967 in a 35 - 65 mixture of aroclor and TCP, polyisobutylene (16.5% in mineral spirits), Indopol H-1900 (polyisobutylene) and 4.5% polyisobutylene in Primol 355. All these were done at a temperature of 77°F, except for Indopol H-1900 which was done at different temperatures. The results are listed in the section of tables and graphs.

Viscosity was measured with a …

The Thermodynamics Of Electrolytic Solutions, Eric Robert Bixon

Theses

The thermodynamic properties of solutions of electrolytes may be accurately determined by the measurement of the activity of the s6lvent. when the. solute is nonvolatile, this quantity may be obtained from measurements of the lowering of the vapor pressure caused by the presence of the dissolved solute.

An experimental method has been devised to measure this effect using a semi-conventional Othmer Still. The experimental apparatus has been constructed. and evaluated. Data has been-obtained for the vapor pressure lowering of methanol due to the presence of dissolved electrolyte for five different electrolyte-methanol systems. An extrapolation technique was developed to make use …

A Preliminary Study Of The Thermodynamic Limitations Of The Nrtl/Lemf Equations, Robert Petrie

Theses

Analytical evaluations of the second and third derivatives of the molar Gibbs energy of mixing for the NRTL/LEMF equations indicate distinct zones of miscible and inmiscible prediction.

These calculations for a number of different α's have produced approximate miscibility limits for both NRTL/LEMF energy parameters and infinite dilution activity coefficients of a given system.

A Kinetic Study Of Lysine And Lysine Derivatives, Stephen Joseph Stanley

Theses

The kinetics of the reaction of iodoacetamide with lysine, polylysine, N-α-Acetyl lysine, and N-ε-Acetyl lysine, have been studied. The investigation was done at 23° C ± 123° C, as a function of pH, and concentration. In all cases it was noted that the rate of reaction increased as the pH increased. The rate data was analyzed in order to obtain the second order rate constants. In addition, the effects of the reactive site's environment on the rate was demonstrated.

Reactions Of Para-Nitroaniline With Acid Chlorides, Stephen Alan Zapoticzny

Theses

Para-nitroaniline was reacted with acid chlorides forming amides. Their structures were elucidated by the performance of various spectral analyses.

Steady State Heat Transfer From A Double Ring Of Identical Spheres In A Regular Orientation, Evelio A. Melo

Theses

Solutions to Laplace's equation are obtained by the method of reflections for the problem of heat transfer from two parallel rings of spheres arranged in regular polygonal arrays. The mathematical models developed describe the rate of heat transfer and spatial temperature distribution due to an arbitrary number of identical spheres of equal surface temperature correcting Fourier's heat transfer equation for the interference caused by a multiparticle array. Although the method of solution is quite rigorous and can be used to obtain as accurate a solution as desired, only the second reflection was obtained, yielding a first order correction. The model …

Inhibitors And Retarders For The Free Radical Polymerization Of Alpha-Methylstyrene, Alexander Accetta

Masters Theses

No abstract provided.