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Browsing Chemical Engineering by Issue Date
Now showing items 1-20 of 1017
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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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(South African Institute of Chemical Engineers, 1995)Please read abstract in the article.
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(Springer, 2000-04)Intumescent flame retardants form a foamed-char barrier layer when exposed to a flame. Conventional systems are based on the acid catalysed dehydration of carbonifics such as dipentaerythritol. Metal oxides also have utility ...
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(South African Institution of Civil Engineering, 2002)The aim of this paper is to present laboratory results on the effectiveness of a proprietary urea-formaldehyde (UF) resin as a soil stabiliser. The Indirect Tensile Strength (ITS) was used to characterise the soil ...
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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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(South African Institute of Chemical Engineers, 2003)The Indirect Tensile Strength (ITS) was used to characterise the soil stabilising properties of a urea-formaldehyde (UF) resin. The test soil was brown shale gravel. Synergistic strength improvements were obtained when ...
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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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(Springer, 2003-03)Calcium gluconate monohydrate is a member of a new class of base-catalysed intumescent compounds. It forms low-density closed-cell carbonaceous foam when exposed to heat. The volume expansion can be as high as two hundred ...
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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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(Cambridge University Press, 2003-06)The compound ammonium D-gluconate (C6H11O7−NH4+) has been studied by X-ray powder diffraction. The powder diffraction pattern and data obtained at room temperature are presented (cell data and powder data summary).
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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 ...
Now showing items 1-20 of 1017