Chemical Engineering Commons^™

Absorption Of Carbon Dioxide In A Bubble Plate Tower, William Arthur Enderson

Masters Theses

"Gas absorption, one of the chief operations of chemical engineering, has occupied investigators for a long time. Results of many experiments on the general subject of gas absorption has been published. However, relatively few data have appeared in the literature on the use of bubble cap towers for gas absorption although they constitute one of the three major classifications of absorption equipment. Bubble cap towers are used extensively in the petroleum industry. More performance data would increase the versatility of existing equipment"--Introduction, page 1.

The Effect Of Addition Agents In Grinding Portland Cement Clinker, Eugene Farrell Hill

Masters Theses

"In the dry grinding of most materials in a ball mill or similar apparatus, a degree of fineness is eventually reached when a noticeable decrease in the efficiency of grinding occurs. The degree of fineness where this phenomenon occurs, as measured by the specific surface of the material being ground, varies greatly with different materials. The accompanying effect in all cases, however, is the formation of a coating upon the balls; this coating in the case of cement adheres tightly to the balls and increases in thickness as grinding progresses after the initial "coating' fineness has been reached. Usually an …

A Comparison Of Methods For The Determination Of Iron In Clays And Related Ceramic Materials, Hoyt Gillum Thompson

Masters Theses

"Iron is always present in clay and ceramic products. This element has a definite effect upon the properties of substances containing it, hence it is important for the ceramist to know the exact amount of this element present in a ceramic material. Many methods have been devised for the precise determination of iron, both in large and small amounts. Of the many methods used, the American Society for Testing Materials has listed only two for the examination of clays, refractories, and similar material...However the amounts of iron for which these methods are most suitable are not given. Nor does the …

The Sorption Of Metallic Ions By Wood Pulp During Purification, Harold Edgar Boyd

Masters Theses

"The cost of producing cellulose acetate, and the difficulties attending its dissolving, plasticizing, and application to specific uses are problems which must be investigated before the ultimate commercial development of the material can be realized. The price of the cellulose used as raw material for acetylation is one of the primary factors influencing the cost of the finished product. At present, cotton linters constitutes the chief practical souce [sic] of acetate, being almost pure alpha-cellulose, and cheaper than staple cotton, our other source of high alpha-cellulose, Wood pulp is the only other material offering promise as a substitute for cotton, …

Manufacture And Application Of Rubber Belting, Lynn Harbison

Professional Degree Theses

"Rubber belting is one of the major products manufactured by the rubber companies and a wide variety of applications is found among many industries. These applications require belts which will meet the needs of the purchasing party both from a cost and a maintenance viewpoint. Belts are installed and operated for two basic purposes, namely, transmission of power and conveyance of level...Transmission and conveyor belting are fundamentally the same for one important factor; this factor is power transmission. Other data are necessary to make and select a belt of the proper type, construction and size. The subject of rubber being …

The Fluorine And Manganese Content Of Certain Missouri Waters, Erwin Charles Hoeman

Masters Theses

"Since early in 1931, considerable attention has been brought to bear upon the subject of fluorides in drinking water supplies, following the discovery of high fluoride concentrations in waters consumed by persons afflicted with the dental defect known as mottled enamel. Analyses have been made, in the course of this study, of a comparatively large number of Missouri waters. The waters analyzed have been collected and made available by the Missouri Geological Survey and Water Resources. They have been secured from diverse sources and include surface waters and underground waters from different geological formations, throughout the State of Missouri"--Introduction, page …

The Bromine And Iodine Content Of Certain Saline Ground Waters Of Missouri, Erwin Carl Meckfessel

Masters Theses

"This report on the saline waters of Missouri covers a preliminary investigation carried on in cooperation with the Geological Survey of Missouri and through the funds appropriated for an F E R A project.

The information contained herein will give the bromine content of the saline waters of Missouri from those districts from which samples were obtainable. The samples were obligingly furnished by the Missouri Geological Survey together with a complete geological, geographical, and chemical analysis of each sample.

The relationship between the occurrence of bromine in saline waters of other parts of the country and those saline waters investigated …

The Photobromination Of Azobenzene, Oden Cass Garst

Masters Theses

"The purpose of this thesis is to make a study of the photobromination of azobenzene. The effect of various variables has been studied. The factors considered were, temperature, frequency of light, and concentration. Information on photobrominations is of great scientific importance, as it opens up a comparatively new field of research, and also contributes further data which helps to establish the quantum theory, if indeed this theory is still in controversy"--Introduction, page 3.

A Study Of The Effects Of Paraffin Wax Upon The Viscosities Of Lubricating Oils, Charles Leo William Hunze

Masters Theses

"The determination of the mean molecular weight of oils and paraffin waxes may have significance as: (1) an important property from a purely research point of view; (2) a step towards structure determination; (3) a study of molecular association with viscosity, making possible the application of well established viscosity binary mixture formulas to oil blends and oil and paraffin wax blends; (4) an aid in the calculations of latent heats for refinery engineering purposes (see A.A. Ashworth's applications of this property); (5) a possible means for identifying bitumens of unknown origin, and determining the approximate proportion of each type in …

The Study And Solution Of A Corrosion Problem Induced By Air Conditioning, Frederick William Hoertel

Professional Degree Theses

"A recent personal investigation conducted by the writer has disclosed the extremely interesting fact that almost every large air conditioning plant in operation in St. Louis is experiencing serious difficulty in operation due to corrosion of some component part. With the ever increasing number of installations of large air conditioning plants the problem of corrosion prevention is becoming one of major economic importance"--Introduction, page 7.

A Study Of The Evaporation Of Organic Liquids And Mixtures Of Organic Liquids, George Walter Eckert

Masters Theses

"The purpose of this thesis is to make a study of the evaporation of organic solvents. The relative rates of evaporation of the single substances and binary and ternary mixtures are to be considered. A study of the changes in composition of binary and ternary mixtures that occur on evaporation are to be made. Information on the evaporation of organic liquids is important in relation to lacquers, and for that reason the solvents used in this work are liquids commonly used in making lacquers"--Introduction, page 2.

A Method For Increasing The Iodine Value Of The Saturated Fatty Acids, Richard Groves Holmes

Masters Theses

"The work covered by this thesis was undertaken with the idea of finding a method whereby unsaturated oils, of the drying type (those having iodine values of one hundred fifty or above), could be made from the saturated fatty acids. After an exhaustive search of the literature no evidence was found that this means of producing the unsaturated acids had ever been developed. Work has been done on the chlorination products of the fatty acids, the processes being covered by patents. No evidence however was given as to the possible structure of these compounds"--Introduction, page 1.

The Relation Between The Mean Molecular Weight And The Absolute Viscosity Of Lubricating Oils, John Isler Moore

Masters Theses

"Of all the properties required of a good lubricant the most important is that of the viscosity at the temperature of its use. Most lubricants consist of oils blended or compounded together in such a way as to produce an oil of a desired viscosity, falling in the special group of viscosities expressed by the Society of Automotive Engineers in their tabulations.

There have been several methods developed to enable the refiner to blend quickly and efficiently although Bell stated that the methods were largely that of trial and error. Herschel formed a chart for blending by the logarithmic rule …

A Relationship Between The Mole Fractions And The Absolute Viscosities Of Blended Lubricating Oils, Ernest Reginald Epperson

Masters Theses

"The viscosity of binary liquid mixtures has been a subject of much investigation, but most of the work has been done with mixtures of substances other than lubricating oils. Lubricating engineers have found viscosity to be the most important property of a good lubricant, though up to the present time no one has succeeded in deducing a satisfactory expression by which the viscosity of a blended lubricant may be calculated from a knowledge of the physical properties of its components. This investigation has been an attempt to find a relationship between the absolute viscosity of a blended lubricating oil and …

The Solubility Of Calcium Sulfate In Sodium Chloride Solutions, Edward Walter Mockobey

Masters Theses

"The purpose of this investigation was to determine the effect of sodium chloride on the solubility of calcium sulfate, and also, if possible, the effect of sodium chloride on the transition temperature for gypsum and anhydrite"--Purpose of the Investigation, page 4.

A Study Of Some Methods Of Concentrating Uranium And Radium In Carnotite Ore, H. L. Gibbs

Masters Theses

"Carnotite ore is a source of radium and it is the recovery of this element which is chiefly sought in its treatment. The radium results from the radioactive disintegration of uranium which is one of the constituents of the yellow mineral carnotite. The ores are largely low grade. Higher grade pockets occur scattered in the deposits and because of their irregular occurrence are not easily located. The larger low grade deposits which are more easily accessible contain considerable quantities of calcium carbonate and oxide minerals. These cause a high consumption of the acid used in the chemical treatment of the …

A Qualitative Study Of Arsine And Stibine Reactivity Toward Inorganic Salts In Certain Solvents, John Edgar Antener

Masters Theses

"The effects of arsine and stibine on some substances have been investigated by various workers and recorded without any attempt at systematic classification. In this work a more comprehensive study of the precipitating effect of arsine and stibine on common inorganic salts in certain solvents, namely, water, ethyl alcohol, ethyl ether, acetone, carbon disulphide, carbon tetrachloride, chloroform, and benzene has been made, with an attempt at reactivity classification"--Introduction, page 1.

Chemical Control -- Influence On Manufacture And Quality Of Cement, Joseph Owen Hunt

Professional Degree Theses

"Definition:- Portland cement may be defined as the product obtained by finely pulverizing clinker produced by calcining to incipient fusion an intimate and properly proportioned mixture of argillaceous and calcareous materials with no additions subsequent to calcination excepting water and calcined or uncalcined gypsum. While a review of Portland cement analysis would show a wide variation in chemical composition, it must not be supposed that such latitude in proportioning the raw material really exists. If the resulting Portland cement is to be sound, normal setting, and of good strength it is imperative that the raw materials shall be correctly proportioned …

Gas Analysis By Measurement Of The Thermal Conductivity, Bertie Lee Browning

Professional Degree Theses

"Types of gas analysis. Methods for the analysis of gases may be divided into two general classes, physical and chemical. In chemical methods, a constituent of the gas mixture undergoes chemical reaction and the amount of the constituent is determined by change in volume or by supplementary chemical methods such as titration. The physical methods of analysis differ in that no chemical change takes place in the gas. Instead, a determination is made of some physical property which is related to the composition of the gas mixture. Some of the physical properties which have been used for purposes of analysis …

The Solubilities Of Alkali Chlorides And Sulfates In Anhydrous Alcohols, Emmet Rudolph Kirn

Masters Theses

"A search of the literature for data on the solubilities of inorganic salts in various anhydrous alcohols will show that comparatively little work has been recorded. Most of the work has been done on salts in aqueous normal alcohols and practically all of this data concerns only methyl and ethyl alcohols. This information shows a wide divergence in results with different workers. Perhaps these differences in data may be attributed to an error in that the alcohols may not have been absolutely anhydrous, for even small traces of water greatly affect the solubility of the salts. Again, the methods of …

A Study Of The Electrolytic Determination Of Lead, Philip Hall Delano

Masters Theses

"The electrolytic determination of lead is one of the most used methods, particularly for control work and where large numbers of analyses have to be run each day. The method is adopted because of its simplicity and because of the small amount of the chemist's time required. It is particularly suited for the determination of small amounts of lead. However, it has been noted that deviations from certain conditions produce results which vary widely from the actual amount of lead present, though results which check with each other may be obtained. Certain elements interfere with the determination and must be …

A Study Of The Iodine Content Of Missouri Vegetables And Soils, Charles Jackson Potter

Masters Theses

"Investigations have shown that the iodine content of vegetables, water, and soils has a direct relationship to the goiter incidence of a given region. A few countries, notably New Zealand and Switzerland have made a rather complete survey. In the United States, South Carolina has made the most progress in this direction.

At the present time there are no available records of vegetable and soil analysis for iodine in Missouri. Hunze determined the amount of iodine in waters in Missouri. The connection of his results with the author's results will be seen later.

The present investigation was carried out at …

The Change In The Order Of Catalytic Action Of Lithium Chloride, Sodium Chloride, Magnesium Chloride, And Calcium Chloride In The Ketonic Splitting Of Ethyl Acetoacetate, Richard Dwight Duff

Masters Theses

"The catalytic action of neutral salts on many reactions has been investigated under various conditions, and a large number of explanations have been put forward. In this work the catalytic action of normal solutions of lithium chloride, sodium chloride, magnesium chloride, and calcium chloride in the presence of .1 N. hydrochloric acid on the ketonic splitting of ethyl acetoacetate has been investigated at several temperatures between 80⁰C. and 95⁰C. An attempt has been made to explain the results obtained"--Introduction, page 1.

A Study Of The Determination Of Fluorine And Other Constituents In Fluorspar, Robert Knowlton Grantham

Masters Theses

"A method for the determination of certain constituents in fluorspar has been studied. Fluorspar can be complete decomposed by fuming with perchloric acid. Agitation and boiling is essential to a rapid and quantitative decomposition. Lead, ferric oxide, titanium oxide, aluminum oxide and total calcium have been quantitatively determined in the solution obtained by the perchloric acid method of decomposition. Silica cannot be determined quantitatively by the use of perchloric acid alone. Preferential solution of calcium carbonate by means of very dilute perchloric acid cannot be used as a method for determining calcium in carbonates in the presence of calcium fluoride"--Summary, …

The Manufacture Of Airtight Leather Gaskets, W. Kedzie Teller

Professional Degree Theses

"Wherever gaskets are used in conjunction with any type of mechanism operated by compressed air, of course, it is essential that the gaskets be air tight. Whereas it is possible to use rubberized fabric for this purpose with a degree of satisfaction, treated leather has certain advantages which make its use preferable. Leather is readily available and can be cut and molded into various shapes with less difficulty than is encountered in fabricating similar designs from reinforced rubber. Then, too, leather withstands wear much better than rubberized fabric. The problem then arises to treat leather to make it airtight, for …

Electrolytic Board For The Determination Of Lead, And Some Comments On The Procedure For Lead In Low-Grade Tailings Of The Southeast Missouri Lead District, O. W. Holmes

Professional Degree Theses

"Recent improvements in the practice of milling lead ores of the Southeast Missouri Lead Mining District has resulted in the production of low-grade mill tailings. The tenor of the lead in the tailings is often between 0.05 and 0.25 per cent. In view of the fact that large tonnages are handled daily and that further improvements are under way, it is imperative that the lead content of these tailings be accurately determined.

For this purpose an electrolytic board, which speeds up the electrolytic determination of lead in low-grade mill tailings, has been devised at the Mississippi Valley Experiment Station of …

A Study Of Petroleum Emulsions, Howard Halcomb Gross

Masters Theses

"The producer of crude oil experiences a continuous source of trouble and loss in the emulsion problem. These emulsions cannot be entirely discarded for several reasons: First because it is a waste of natural resource and second because there are such large quantities that no feasible outlet could be found on account of fire hazard and stream polution [sic]. Further to keep these emulsions in storage for slow settling puts a storage burden on the producers. To handle the emulsions most economically many producers are treating them and a large number of methods for treating have been devised. The object …

The Solubility Of Inorganic Salts In Ether, Clarence Bernard Weiss

Masters Theses

"The data on the solubility of inorganic salts in ether is scarce. Eder made a study of this subject and found few salts whose solubility could be called high. He used both hydrated and dehydrated salts. Neumann mentions the great solubility of aluminum chloride in ether, but did no work to find its exact proportions. It was thought that perhaps with this particular salt, a solubility curve might be obtained that would be both instructive and interesting. Therefore the major portion of this work was spent in determining the solubility of aluminum chloride in ether. Other salts whose solubilities were …

The Solubility Of Inorganic Salts In Carbon Disulfide: The Case Of Aluminum Bromide, Herman Henry Kaveler

Masters Theses

"Since about 1890, the interest in solubility has turned to a large extent to the investigation of the solubility of compounds in organic solvents. This has resulted in a great deal of work being done on the solubility of inorganic salts in non-aqueous solvents. As this mass of data steadily accumulated, the theoretical considerations of solubility and the ideal solution made rapid advances, as Hildebrand has pointed out. We express as much wonder over these theoretical advances as chemists did over the discover "that salts do dissolve in organic compounds". To add some useful data to that already accumulated on …

Solubility Of Solid Paraffins In Lower Molecular Weight Hydrocarbons, Ruth Veino Goodhue

Masters Theses

"The solubility of solid paraffins in the lower molecular weight liquid hydrocarbons offers a problem of some considerable commercial importance since it is by use of these low boiling hydrocarbons that the undesirable paraffin waxes are removed from lubricating oils in the Sharples process. Little data is to be found in the literature on the solubility of the paraffin waxes, and that which is available is of a very general nature...This work was undertaken for the purpose of finding if possible, what effect this "cracking" or "telescoping" process has on the solubility of the paraffins in the liquid hydrocarbons"--Introduction, page …