Search Results - "Uwaoma, R. C"

Properties and reactivity of two oxidized and unoxidized South African Highveld fine coal rejects and their density-separated fractions by Mphahlele, K, Matjie, R. H., Bunt, J. R., Uwaoma, R.C.

“…Fine coal reject samples (FCRs) derived from the South African (SA) feed-coal preparation are unsuitable for gasification/combustion. In this novel…”
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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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Steam gasification kinetics of biochar at elevated pressures by Schroeder, J., Neomagus, H.W.J.P., Bunt, J.R., Everson, R.C., Uwaoma, R.C.

“…A waste product biomass sample was received and charred to produce the biochar sample. The char reactivity experiments were conducted in a high-pressure fixed…”
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The influence of the roof and floor geological structures on the ash composition produced from coal at UCG temperatures by Uwaoma, R.C., Strydom, C.A., Matjie, R.H., Bunt, J.R., van Dyk, J.C

“…The mineralogy of the ash and slag formed at typical UCG temperatures were investigated using a bituminous coal from the Theunissen UCG site in the Free State…”
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Gasification of chars from tetralin liquefaction of < 1.5 g cm−3 carbon-rich residues derived from waste coal fines in South Africa by Uwaoma, R. C., Strydom, C. A., Matjie, R. H., Bunt, J. R.

“…The float–sink density separation method was used to produce a < 1.5 g cm −3 coal density fraction. The sample was subjected to tetralin liquefaction…”
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Gasification of chars from tetralin liquefaction of carbon-rich residues derived from waste coal fines in South Africa by Uwaoma, R. C, Strydom, C. A, Matjie, R. H, Bunt, J. R

“…The float-sink density separation method was used to produce a < 1.5 g cm.sup.-3 coal density fraction. The sample was subjected to tetralin liquefaction…”
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The influence of calcium lignosulphonate addition on non-isothermal pyrolysis and gasification of demineralised bituminous coal fines by Uwaoma, R.C., Seheri, M.P., Strydom, C.A., Bunt, J.R., Matjie, R.H.

“…•Coal fines were demineralised using acid de-ashing treatment.•CaLS added to the coal fines and demineralised coal in different proportion showed an increase…”
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The catalytic effect of Benfield waste salt on CO.sub.2 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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A metallurgical coke replacement derived from torrefied wood chips pre-treated by wet oxidation by Uwaoma, R.C., Stokes, W.G., Bunt, J.R., Strydom, C.A., Matjie, R.H.

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Evaluation of sugar cane bagasse hydrothermal liquefaction products for co-gasification with coal as green coal pellet production by Marx, S., Laubscher, A.N.E., Bunt, J.R., Venter, R.J., Uwaoma, R.C., Strydom, C.A.

“…This study investigates the production and properties of green coal pellets formed by combining hydrochar and coal in different ratios (3,1, 1:1, and 1:3). It…”
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Kinetics, thermodynamics, and thermal decomposition characteristics of co-pyrolysis of municipality solid waste residue hydrochar and <1.5 g/cm3 fraction of South African discarded fine coal by Uwaoma, R.C., Schröer, B.J., Strydom, C.A., Bunt, J.R., Matjie, R.H., Mphahlele, K., Meyer, J.A.

“…The solid residues obtained after subjecting Municipality Solid Waste Residue (MSWR) to hydrothermal treatment were blended (50:50) with the <1.5 g/cm3…”
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Co-gasification reactivity and kinetics of municipality and coffee waste residue hydrochar and South African density separated coal blends by Uwaoma, R.C., Strydom, C.A., Bunt, J.R., Matjie, R.H., Okolo, G.N., Marx, S.

“…Residues obtained from hydrothermal liquefaction of municipality waste (MSWR) and coffee waste (CR) were blended with coal and charred at 1000 °C…”
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