Search Results - "Strydom, C. A"

Changes to the organic functional groups of an inertinite rich medium rank bituminous coal during acid treatment processes by Strydom, C.A., Bunt, J.R., Schobert, H.H., Raghoo, M.

“…A South African inertinite rich medium rank bituminous coal was subjected to a series of acid treatment steps using concentrations of HF and HNO 3 ranging…”
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Influence of hydration time on the hydration of MgO in water and in a magnesium acetate solution by Aphane, M. E., van der Merwe, E. M., Strydom, C. A.

“…The time required for maximum hydration of MgO obtained from the calcination of magnesite was determined. The MgO samples were hydrated for different time…”
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An investigation into the effect of various chemical and physical treatments of a South African phosphogypsum to render it suitable as a set retarder for cement by Potgieter, J.H., Potgieter, S.S., McCrindle, R.I., Strydom, C.A.

“…The work describes various physical and chemical treatments to eliminate the deleterious effects of impurities in phosphogypsum on the delayed setting time and…”
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Preparation of a magnesium hydroxy carbonate from magnesium hydroxide by Botha, A., Strydom, C.A.

“…The preparation of a magnesium hydroxy carbonate from magnesium hydroxide and carbon dioxide is described. The procedure involves the formation of a magnesium…”
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Validation of Using a Modified BET Model to Predict the Moisture Adsorption Behavior of Bituminous Coal by Strydom, C. A., Campbell, Q. P., le Roux, M., du Preez, S. M.

“…A good correlation exists between the amount of moisture adsorbed and the oxygen content of medium-rank B vitrinite-rich and medium-rank C inertinite-rich…”
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FTIR and XPS study of the adsorption of probe molecule used to model alkyd resin adhesion to low carbon aluminum killed steel by Mohlala, P.J., Strydom, C.A.

“…An important factor in achieving maximum adhesion of a particular coating system to the substrate lies in the proper pre-treatment of the substrate prior to…”
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An investigation of phosphate ion adsorption from aqueous solution by fly ash and slag by Agyei, N.M., Strydom, C.A., Potgieter, J.H.

“…The removal of phosphate ions from aqueous solution by fly ash and slag has been investigated. The chemical composition of each adsorbent has been determined…”
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Oxidation of Sodium Thiocyanate (NaSCN) in Stretford Aqueous Liquor using Air and Commercial Hydrogen Peroxide (H2O2) by Matjie, R. H, Singh, R, Strydom, C. A

“…Stretford processes are most widely utilized for the absorption of H2S from gaseous streams from the coal gasification process and converting the absorbed H2S…”
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The catalytic effect of Benfield waste salt on CO2 gasification of a typical South African Highveld coal by Uwaoma, R. C., Strydom, C. A., Bunt, J. R., Okolo, G. N., Matjie, R. H.

“…The possible catalytic effect of a 5% loading by mass of crystallized salt from spent Benfield solution (SBFS) was investigated and compared with the catalytic…”
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Pyrolysis of Tetralin Liquefaction Derived Residues from Lighter Density Fractions of Waste Coals Taken from Waste Coal Disposal Sites in South Africa by Uwaoma, R. C, Strydom, C. A, Matjie, R. H, Bunt, J. R, Okolo, G. N, Brand, D. J

“…The lighter density (<1.5 g/cm3) fractions produced from two waste coals sampled from the waste coal disposal sites at thermochemical plants situated in South…”
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Hydration of medium reactive magnesium oxide using hydration agents by VAN DER MERWE, E. M, STRYDOM, C. A

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The effect of calcining conditions on the rehydration of dead burnt magnesium oxide using magnesium acetate as a hydrating agent by STRYDOM, C. A, VAN DER MERWE, E. M, APHANE, M E

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Production of sodium-based zeolites and a potassium-containing leach liquor by alkaline leaching of South African coal fines ash by Collins, A.C., Strydom, C.A., Matjie, R.H., Bunt, J.R., van Dyk, J.C.

“…South African coal discards derived from feed coal for thermoprocesses pose human health and environmental problems and incur high disposal costs. These issues…”
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Mineralogical, chemical, and petrographic properties of selected South African power stations' feed coals and their corresponding density separated fractions using float-sink and reflux classification methods by Rautenbach, R., Strydom, C. A., Bunt, J. R., Matjie, R. H., Campbell, Q. P., Van Alphen, C.

“…Three South African feed coal samples for the combustion process were beneficiated to produce carbon-rich and mineral-rich fractions. The mineralogical,…”
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Recovery of sulphur and calcium carbonate from waste gypsum by Maree, J.P., Oosthuizen, S., Nengovhela, N.R., Theron, D.J., Strydom, C.A.

“…Gypsum is produced as a waste product by various industries, e.g. the fertiliser industry, the mining industry and power stations. Gypsum waste disposal sites…”
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Utilisation of fly ash in a geopolymeric material by Swanepoel, J.C., Strydom, C.A.

“…Finding means of utilising waste products is a very important field of research at the moment. In this study, fly ash, a waste product of the electricity and…”
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FACTSAGE™ thermo-equilibrium simulations of mineral transformations in coal combustion ash by Collins, A.C., Strydom, C.A, van Dyk, J.C., Bunt, J.R.

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Groundwater monitoring during underground coal gasification by van Dyk, J.C., Brand, J., Strydom, C.A., Waanders, F.B.

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Dehydration behaviour of a natural gypsum and a phosphogypsum during milling by Strydom, C.A., Potgieter, J.H.

“…The paper describes an investigation into the dehydration behaviour of a natural and a phosphogypsum under isothermal conditions. The purpose of the work was…”
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Response surface models for synthetic jet fuel properties by Coetzer, R. L. J., Joubert, T. S., Viljoen, C. L., Nel, R. J. J., Strydom, C. A.

“…Jet fuel is a mixture of different hydrocarbon groups, and the mass contribution of each of these groups toward the overall chemical composition of the fuel…”
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