Now showing items 1-15 of 15

    • Bioethanol from cassava for a community project 

      Marx, S.; Nquma, T.Y.; Obiero, G.O. (ETA-Florence Renewable Energies, 2010)
      Although the North-West Province of South Africa is renowned for its platinum industry, wildlife tourism and Casino resorts, its people are among the poorest in South Africa. The Thusanang community project concept was ...
    • Catalytic hydroprocessing of ground cottonseeds in a cottonseed oil and 1-octane solvent to produce renewable diesel. (Slide presentation) 

      Schabort, C.J.; Broodryk, Z.; Venter, R.; Marx, S. (ETA-Florence Renewable Energies, 2017)
    • A comparison of biodiesel purification methods 

      Schabort, C.J.; Van der Walt, P.J.; Marx, S. (ETA-Florence Renewable Energies, 2013)
      The purification of biodiesel is of cardinal importance to ensure the final product meets industry standards. This final step in the production stage contributes a large portion of the cost attributed to biodiesel production. ...
    • Effect of biomass feedstock composition on biochar properties produced through hydrothermal liquefaction 

      Bartlett, D.; Venter, R.; Marx, S. (EARET, 2018)
      The effect that 6 different biomass feedstocks have on biochar was investigated. The biochar was produced through hydrothermal liquefaction at temperatures of 260˚C and 300˚C. The effect of temperature was also investigated. ...
    • Enzymatic recovery of water from water hyacinth 

      Schabort, C.J.; Kühn, M.J.; Marx, S. (ETA-Florence Renewable Energies, 2013)
      This study sought to assess the viability of utilizing water recovered from a declared aquatic weed, Eichhornia crassipes, commonly known as the water hyacinth, for domestic, industrial and agricultural purposes. Celluclast, ...
    • Evaluation of bio-char based products as hydrotreating catalysts for the production of renewable fuel 

      Venter, R.J.; Booysen, J.G.; Marx, S.; Schabort, C. (2017)
      Increasing demand for alternative fuel from fossil fuel exists which has led to the development of new technologies for the production of bio-fuels. One such technology involves the hydrotreatment of vegetable oils such ...
    • The evaluation of spent coffee grounds as feedstock for continuous hydrothermal liquefaction 

      Von Wielligh, J.; Schabort, C.J.; Venter, R.; Marx, S. (EARET, 2018)
      This study looks at converting a low-value waste in a continuous hydrothermal liquefaction reactor to a high-value biocrude and biochar product. The feedstock chosen for this study was spent coffee grounds (SCG) as spent ...
    • Fermentation of lignocellulosic biomass using ultrasonic pretreatment 

      Schabort, C.J.; Faul, C.; Nagel, M.; Marx, S. (ETA-Florence Renewable Energies, 2014)
      The potential fermentation of the sugars derived from water hyacinth, sweet sorghum bagasse and amaranth using indirect ultrasonic pretreatment, was investigated. The optimum sugar and ethanol yield for the ultrasonic bath ...
    • Fuel ethanol production from sweet sorghum bagasse using microwave irradiation 

      Marx, S.; Chiyanzu, I.; Ndaba, B.; Schabort, C.J. (ETA-Florence Renewable Energies, 2013)
      Sweet sorghum is a hardy crop that can be grown on marginal land and can provide both food and energy in an integrated food and energy system. Lignocellulose rich sweet sorghum bagasse (solid left over after starch and ...
    • In-situ biodiesel production from municipal waste water treatment plant clarifier effluent stream 

      Schabort, C.; Van Tonder, G.C.; Venter, R.J.; Marx, S. (ETA-Florence Renewable Energies, 2015)
      The natural occurrence of micro-algal species in water treatment plants introduces many operational problems. If one, however, considers the high lipid, protein and carbohydrate content, micro-algae become attractive as ...
    • Predictive model for fuels from hydrothermal liquefaction of municipal solid waste 

      Marx, S.; Venter, R.J.; Stols, C.; Bartlett, D. (EUBCE, 2019)
      Effective management of the environmental impact of municipal solid waste (MSW) is a global issue linked to urbanization and a rapid increase in the global population. Although MSW has been evaluated as possible feedstock ...
    • Preparation of polyurethane from lignin and crude glycerol 

      Muller, L.C.; Marx, S.; Chiyanzu, I.; Vosloo, H. (ETA-Florence Renewable Energies, 2015)
      Polyurethane foam (PUF) was prepared by a novel approach, using a renewable polyol derived from only biofuel production by-products, lignin and crude glycerol. This could potentially be a high value bio-refinery application ...
    • Thermochemical liquefaction of water hyacinth 

      Schabort, C.J.; Van Tonder, G.C.; Marx, S. (ETA-Florence Renewable Energies, 2013)
      The use of non-edible biomass should be investigated as alternatives for biofuel production. Aquatic weeds like water hyacinth (WH) are classified as third generation crops. WH in South Africa is an invasive species that ...
    • Ultrasonic assisted biodiesel production 

      Schabort, C.J.; Marx, S.; Hövener, D. (ETA-Florence Renewable Energies, 2014)
      One of the biggest hurdles in the production of biodiesel is the high production cost compared to petroleum-derived diesel. Even though the mechanical agitation utilised during biodiesel production is effective, it is ...
    • Waste butter and margarine as feedstock for biodiesel production 

      Schabort, C.J.; Visser, H.P.; Hartzenberg, A.; Venter, R.; Marx, S. (ETA-Florence Renewable Energies, 2012)
      The resulting bio-waste from butter and margarine factories should be disposed of in an environmentally friendly manner. Currently the bio-waste is either flushed into the municipal sewerage system or moved to landfill ...