Index Catalog // ScholarsArchive@OSU

Heat transfer between moving beds of solids and a vertical tube

Creator:: Obuskovic, Nevenka S.
Abstract:: Heat transfer to moving packed beds of solids has been studied extensively but predictions are usually specific to the experimenter's own equipment. In order to obtain a more general predictive equation, the heat transfer coefficient was measured for a single vertical tube immersed in a moving packed bed of glass...
Resource Type:: Dissertation
Full Text:: developed to predict the heat transfer coefficient between the wall and the flowing bed of solid particles

Modeling and control studies of a magnetically-staged fluidized bed

Creator:: Al-Zahrani, Abdulrahim
Abstract:: A column which contains a series of three fluidized beds for counter-current contacting of solid particles with a gas stream has been studied. Successful, independent control of solids holdup on each stage has been achieved by manipulating the field of a magnetic distributor-downcomer on each stage. Two methods to manipulate...
Resource Type:: Dissertation
Full Text:: Modeling and control studies of a magnetically-staged

A computer program to solve aqueous inorganic equilibrium systems using Pitzer's method to determine activity coefficients

Creator:: Kelly, Barry
Abstract:: Chemical equilibrium is a major factor in many natural and industrial systems. The ability to predict ionic equilibrium is extremely valuable in industry in solving problems without the costs involved in full scale experiments. An example of an application in the pulp and paper industry is the prediction of non-process...
Resource Type:: Masters Thesis
Full Text:: predicted the solid phase amount and chemical composition in each of the test cases. A parametric study

Iron oxidation by Thiobacillus ferrooxidans

Creator:: Kang, Sun Ki
Abstract:: The bacterium most frequently used in microbial leaching processes and studies is Thiobacillus ferrooxidans. Applications of this bacterium include the treatment of coal, low-grade ores and industrial solid wastes for the solubilization of pyrite and other trace metals associated with sulfides. The goal of this study was the development of...
Resource Type:: Masters Thesis
Full Text:: -grade ores and industrial solid wastes for the solubilization of pyrite and other trace metals

Dynamic modeling of thermal treatment of timber poles

Creator:: Sahle-Demessie, Endalkachew
Abstract:: The temperature-time-location relationships during steam conditioning and pressure treatment of timber poles have been studied and mathematical models that take into account both the thermal properties of the poles and the parameters of the treatment process have been developed. Although much work has been previously done in this area, the...
Resource Type:: Masters Thesis
Full Text:: level of study considers the solid as a non-homogeneous material and characterizes the actual structure

Bioleaching of coal in a fluidized bed

Creator:: Knott, John A.
Abstract:: Illinois coal ground to 80-200 mesh was leached with a low phosphate, high nitrogen medium containing a mixture of Thiobacillus ferrooxidans and thiooxidans in a fluidized bed. Coal slurries of 20-160 g/L were treated in a 5 cm ID, 9.5 m high continuous loop bioreactor with crossovers at top and...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF John Knott for the degree of Master of Science in Chemical Engineering presented on

Design of liquid-liquid contractor for the experimental studies of mass transfer : the evaluation of interface mass transfer coefficients on the binary system water-n-butanol

Creator:: Al Dahhan, Muthana H.
Abstract:: A contactor has been designed and constructed for experimental studies of mass transfer with or without chemical reaction between two fluid phases. The contactor is flexible enough to investigate a wide range of variables affecting mass transfer coefficients. It is easy to operate; it could be operated either as a...
Resource Type:: Masters Thesis
Full Text:: . In this case steady state is approached and k is independent of the surface age, T , where 0 is

The solubility of naphthalene in supercritical carbon dioxide : a comparison of the compressed-gas and expanded-liquid treatments

Creator:: Jones, Timothy J.
Resource Type:: Masters Thesis
Full Text:: parameter introduced by the equation of state. This study scrutinized the interaction parameter and

The effect of copolymer and iron on the fouling characteristics of cooling tower water containing corrosion inhibitors

Creator:: Abu-Al-Saud, Abdullah A.
Abstract:: Various antifoulant treatment programs and the considerations necessary for the effective use of such programs were examined. Two different groups of tests, with and without iron contamination, have been carried out on the effectiveness of several of the state-of-the-art copolymers (PA, HEDP, AA/HPA, AA/MA, SS/MA and AA/SA) in the inhibition...
Resource Type:: Dissertation
Full Text:: the effectiveness of several of the state-of-the-art copolymers (PA, HEDP, AA/HPA, AA/MA, SS/MA and

Fouling of heat transfer surfaces under forced circulation boiling condition

Creator:: Imdakm, Abdussalam Omar
Abstract:: Various conditions of heat flux in the range of 46600 to 93300 Btu/hr ft² and water velocity in the range of 1.44 to 2.16 ft/sec were tested under carefully controlled conditions to determine their effect on scale formation, and the characteristics of scale. Inlet temperature and bulk temperature were maintained...
Resource Type:: Masters Thesis
Full Text:: Oregon State University in partial fulfillment of the requirements for the degree of Master of Science

ScholarsArchive@OSU

Heat transfer between moving beds of solids and a vertical tube

Modeling and control studies of a magnetically-staged fluidized bed

A computer program to solve aqueous inorganic equilibrium systems using Pitzer's method to determine activity coefficients

Iron oxidation by Thiobacillus ferrooxidans

Dynamic modeling of thermal treatment of timber poles

Bioleaching of coal in a fluidized bed

Design of liquid-liquid contractor for the experimental studies of mass transfer : the evaluation of interface mass transfer coefficients on the binary system water-n-butanol

The solubility of naphthalene in supercritical carbon dioxide : a comparison of the compressed-gas and expanded-liquid treatments

The effect of copolymer and iron on the fouling characteristics of cooling tower water containing corrosion inhibitors

Fouling of heat transfer surfaces under forced circulation boiling condition

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