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- Browsing Theses and Dissertations (Chemical Engineering) by Issue Date
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Browsing Theses and Dissertations (Chemical Engineering) by Issue Date
Now showing items 1-20 of 343
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(University of Pretoria, 1972)The effective mean temperature difference (M.T.D.) in a heat exchanger depends on the terminal temperatures of the two streams, the distributions of flows over the transfer area with the associated local mixing effects ...
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(University of Pretoria, 1981)Afrikaans: Dit is bekend dat aluminiumallooie wat meer as 4,5% koper bevat korrosieprobleme ondervind wanneer dit in kontak met enkelfasige petrol-alkoholmengsels is, mits die tempe= rature hoer as 60°c is. Hierdie ...
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(University of Pretoria, 1994)The main investigation consisted of determining corrosion rates of mild steel (A lSI 1 020) exposed to de-aerated stagnant solutions of fatty acids in water at different acid numbers and temperatures, with the aid of ...
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(University of Pretoria, 2002-09-06)The genus Lippia Houst. (family Verbenaceae Juss.) has been used medicinally for centuries in various cultures. Numerous traditional medicinal applications of the South African Lippias are known, and among these is Lippia ...
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(University of Pretoria, 2003)The control of batch pulp digesters is hampered by insufficient measurements as well as nonlinearity and weak correlation between consecutive cooks. This makes a model-based approach to control attractive. Due to the age ...
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(University of Pretoria, 2003-05-03)The pHauxostat technique for process control was proposed in the late nineteen fifties with a theoretical explanation done by Martin and Hempfling in 1976. The theory was extended in 1985 (Rice&Hempfling), but concluded ...
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(University of Pretoria, 2005)The Lawrence Livermore National Laboratory (LLNL), in Berkley, California, developed a laboratory scale non-membrane electrosorption process known as Capacitive Deionization Technology™ (CDT™) for the continuous removal ...
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(University of Pretoria, 2005-02-27)It is known that when water is a product in reactions catalysed by cation exchange resins, it inhibits the reaction rate much more than predicted by the reverse reaction or dilution effects. In this work the inhibiting ...
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(University of Pretoria, 2005-04-16)Fire presents a great risk to humans and their possessions. Polymeric compounds are highly flammable and compounds are added to increase their fire resistance. These additives are referred to as flame retardants. Intumescent ...
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(University of Pretoria, 2005-04-20)Fedmis Pty (Ltd) situated in Palaborwa, South Africa produces phosphoric acid using the wet process production process. For this study, two main areas of concern in the wet process phosphoric acid production were investigated. ...
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(University of Pretoria, 2005-05-18)
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(University of Pretoria, 2005-07-05)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2005-09-21)The purpose of the investigation was the design and development of an oxygen carrier system for oxygenation of liver cells (hepatocytes) in a bio-artificial liver support system. Acute liver failure is a devastating condition ...
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(University of Pretoria, 2005-11-01)The handling and disposal of hot tarry liquid residues can be problematic in industry, in this case, a phthalic anhydride plant using naphthalene as feed stock. The residue from the plant contains an appreciable amount of ...
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(University of Pretoria, 2006-01-11)This research project aimed at evaluating four internationally accepted leachate extraction tests to determine their applicability on sewage sludge samples. Furthermore, the present analytical method to determine the ...
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(University of Pretoria, 2006-02-17)Gravity driven trickle flow of a liquid over a fixed bed in the presence of a gaseous phase is widely encountered throughout the process industry. It is one of the most common ways of contacting multi-phase fluids for ...
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(University of Pretoria, 2006-03-08)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2006-05-11)The control of flotation circuits is a complicated problem, since flotation circuits are nonlinear multivariable processes with a significant degree of interaction between the variables. Isolated PID controllers usually ...
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(University of Pretoria, 2006-05-19)Granular gas bed filters have been used in industry for a considerable period and mathematical descriptions of dust capture have allowed rigorous design of static beds. Provision for bed movement and electrostatic augmentation, ...
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(University of Pretoria, 2006-05-19)In order to understand the impact from a point source of pollution a comprehensive air quality monitoring programme must be in place. Measurement stations are at fixed locations and can only measure the relevant concentration ...
Now showing items 1-20 of 343