Browsing Research Output by Author "10059571 - Waanders, Frans Boudewijn"
Now showing items 1-20 of 122
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Acid leaching of heavy metals from bentonite clay, used in the cleaning of acid mine drainage
Enslin, F.; Van der Mey, L.; Waanders, F. (SAIMM, 2010)Heavy metals and sulphates in acid mine drainage (AMD) can be adsorbed onto bentonite clay, leaving clean water and a heavy metal loaded clay precipitate as products. Due to the toxicity of heavy metals, the clay could ... -
Adsorption of Congo Red by surfactant-impregnated bentonite clay
Fosso-Kankeu, Elvis; Waanders, Frans; Fourie, Charissa Laurette (Taylor & Francis, 2016)Due to an ever-changing climate and invasive foreign plant species increase, South Africa struggles with limited water resources. Water is important for the sustenance of all living organisms and it has to be protected. ... -
Adsorption of metal ions from fine coal tailings dump waste water using bio-char
Fosso-Kankeu, Elvis; Weideman, Reinhardt; Moyakhe, Dumisane; Campbell, Quentin; Waanders, Frans (EARET, 2018)Coal mining operations produce large amounts of tailings which contains heavy metals. Heavy metals such as cadmium (Cd) can cause environmental problems. The adsorption capacities of biochars produced from spent coffee ... -
Adsorption potential of bentonite and attapulgite clays applied for the desalination of sea water
Nel, Monica; Waanders, Frans B.; Fosso-Kankeu, Elvis (PSRC, 2014)A possible new process for the partial desalination of seawater is to use bentonite clay or attapulgite as an adsorbent. The ion exchange property of these clays, which is a result of the characteristic t-o-t layer ... -
Assessment of the performance of SDS-impregnated brewery waste as suitable adsorbent for the removal of Pb and Cd from water
Fosso-Kankeu, Elvis; Leamy, Meiklejohn; Akinpelu, Enoch; Waanders, Frans (EARET, 2018)— Due to increasing populations and an ever-changing climate, limited water resources are South Africa’s burden. Clean water is important for all living organisms’ health and environmental sustainability. To achieve ... -
Behaviour of calcium-containing minerals in the mechanism towards in situ CO2 capture during gasification
Van Dyk, J.C.; Waanders, F.B.; Hack, K. (Elsevier, 2008)Mineral matter transformation and the behavior of mineral matter in the coal during gasification, provide more information on the suitability of a specific coal source for combustion or gasification purposes. Therefore, ... -
Behaviour of calcium-containing minerals in the mechanism towards in situ CO2 capture during gasification
Van Dyk, J.C.; Waanders, F.B.; Hack, K. (Elsevier, 2008)Mineral matter transformation and the behavior of mineral matter in the coal during gasification, provide more information on the suitability of a specific coal source for combustion or gasification purposes. Therefore, ... -
Behaviour of selected major elements during fixed-bed gasification of South African bituminous coal
Bunt, J.R.; Waanders, F.B.; Schobert, H. (Elsevier, 2012)The Sasol–Lurgi Fixed Bed Dry Bottom gasifier (S–L FBDB) treats a feed coal containing c.a. 30% ash forming minerals, which means that there are complex mineralogical processes occurring simultaneously with each other, ... -
Bentonitc clay adsorption affinity for anionic and cationic dyes
Fosso-Kankeu, Elvis; Waanders, Frans; Fraser, Corinne (PSRC, 2014)The incidence of dye pollution in South Africa is quite alarming, requesting effective and affordable techniques to curb further degradation of the limited water resource. Adsorption is an attractive technique due to a ... -
Biological reduction of COD and sulphate by SRB in anaerobic moving bed biofilm reactor under high metal loading conditions
Akinpelu, Enoch A.; Fosso-Kankeu, Elvis; Waanders, Frans; Ntwampe, Seteno K.O. (EARET, 2018)The performance of an anaerobic moving bed biofilm reactor (MBBR) containing AnoxKaldnesTM K5 model for the treatment of raw acid mine drainage (AMD) was investigated for the reduction of sulphate and chemical oxygen ... -
Biosorption of cadmium from water using surfactant impregnated eggshell
Fosso-Kankeu, Elvis; Steenekamp, Gerhard; Akinpelu, Enoch; Waanders, Frans (EARET, 2018)Cadmium (Cd) is regarded as one of the most toxic elements and it causes water pollution when it exceeds the permissible limit. It is currently present in the Mooi River above these permitted levels, and must therefore ... -
Biosorption of Fe (II) from aqueous solution by brewing waste: equilibrium and kinetic studies
Akinpelu, Enoch Akinbiyi; Fosso-Kankeu, Elvis; Waanders, Frans (Japan Society on Water Environment, 2019)The physicochemical analysis of surface water of Mooi and Vaal rivers network indicated that the concentration of iron was far above the required limit by the South Africa water regulation. In this study, brewing waste was ... -
Brewery effluent sludge characterization and dewatering to increase potential water recycling capabilities
Fosso-Kankeu, Elvis; Van der Vyver, Christiaan; Moyakhe, Dumisane; Waanders, Frans; De Klerk, Corli (EARET, 2018)In this study various coagulants and flocculants were tested for optimum removal of COD from brewery wastewater. The coagulants used were ferric chloride and an organic coagulant mixture obtained from the brewery company. ... -
Carbon particle type characterization of the carbon behaviour impacting on a commercial-scale Sasol-Lurgi FBDB gasifier
Bunt, J.R.; Waanders, F.B.; Wagner, N.J. (Elsevier, 2009)Char-form analysis, whilst not yet an ISO standard, is a relatively common characterization method applied to pulverized coal samples used by power utilities globally. Fixed-bed gasification coal feeds differ from pulverized ... -
CO2 reactivity of briquettes derived from discard inertinite-rich Highveld coal using lignosulphonate and resin as binders
Leokaoke, N.T.; Bunt, J.R.; Neomagus, H.W.J.P.; Waanders, F.B.; Strydom, C.A. (SAIMM, 2019)South African collieries generate approximately 31 Mt of fine and ultrafine coal annually, with the majority of the ultrafine fraction discarded in slurry ponds and underground workings. Use can be made of this energy ... -
Coagulation/flocculation potential of polyaluminium chloride and bentonite clay tested in the removal of methyl red and crystal violet
Fosso-Kankeu, E.; Webster, A.; Ntwampe, I.O.; Waanders, F.B. (Springer, 2017)This study investigated the influence of the physico-chemical properties of methyl red (MR) and crystal violet (CV) on their removal by bentonite clay and polyaluminium chloride (PACl). Different dosages of bentonite clay, ... -
Coal and coal ash characteristics to understand mineral transformations and slag formation
Van Dyk, J.C.; Waanders, F.B.; Benson, S.A.; Laumb, M.L. (Elsevier, 2009)A knowledge of the composition and structure of minerals in coal is necessary in order to understand the mineral transformations and agglomerate or slag formation during combustion or gasification. Coal ash fusibility ... -
Coal char temperature profile estimation using optical reflectance for a commercial-scale Sasol-Lurgi FBDB gasifier
Bunt, J.R.; Waanders, F.B.; Joubert, J.P. (Elsevier, 2008)In the Sasol-Lurgi fixed-bed dry-bottom (FBDB) gasifier the temperature in the combustion zone should not exceed the melting point of the ash-forming minerals, causing them to melt/flow and agglomerate. Sintering of ash ... -
Coal cleaning rejects and sulphide oxidation by Fenton’s reaction
De Medeiros, Diego; Waanders, F.; Pires, A.; Oliveira, M.; Lima, B. (International Pittsburgh Coal Conference, 2016) -
Coal cleaning residues and Fe-minerals implications
Silva, Luis F.O.; Waanders, Frans; Macias, Felipe; Oliveira, Marcos L.S.; Da Boit, M. Kátia (Springer, 2011)In the present investigation, a study was undertaken to understand the origin of Fe-minerals presents in Brazilian coal mining and to understand the environmental implication and the chemical heterogeneity in the study ...