Browsing Research Output by Subject "Biodiesel"

Now showing items 1-10 of 15

    • Biofuel production from spent coffee grounds via lipase catalysis 

      Karmee, Sanjib Kumar; Swanepoel, Wian; Marx, Sanette (Taylor & Francis, 2018)
      Lipases namely Mucor miehei, Pseudomonas cepacia, Rhizopus delemar, Geotrichum candidum, Candida rugosa, Porcine pancreas-II, Pseudomonas fluorescence, and Candida antarctica lipase-B (Novozyme-435) were employed for ...

    • Biofuels from spent coffee grounds: comparison of processing routes 

      Marx, Sanette; Venter, Roelf; Karmee, Sanjib Kumar; Louw, Jaco; Truter, Chantelle (Taylor & Francis, 2020)
      Bulk fuel was produced from spent coffee grounds (SCG) using different oil extraction and fuel production methods. The highest oil yield (30.2%) and energy efficiency (50%) from continuous hydrothermal liquefaction (CHTL) ...

    • 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. ...

    • Conceptual cost of an integrated micro-algal biomass-to-liquids facility 

      Brink, Jaco; Marx, Sanette (ETA-Florence Renewable Energies, 2011)
      An order­of­magnitude cost estimate was conducted on a new integrated biomass­to­liquids (BtL) process that produces 2.6 million litres of biodiesel per year from micro­algal biomass harvested from the Hartbeespoort Dam. ...

    • Conceptual design of an integrated micro-algal biomass-to-liquids process 

      Brink, Jaco; Marx, Sanette (ETA-Florence Renewable Energies, 2011)
      A new integrated biomass­to­liquids conceptual process was developed to produce 2.6 million litres of biodiesel per year from harvested micro­algal biomass. Three unconventional harvesting methods, a thermochemical ...

    • Enzymatic biodiesel production from Manilkara Zapota (L.) seed oil 

      Karmee, Sanjib Kumar (Springer, 2017)
      Oil obtained from the seeds of Manilkara zapota (L.) was transesterified with methanol using lipases as biocatalysts. Four commercially available lipases, such as, porcine pancreas, Candida rugosa, Pseudomonas cepacia and ...

    • Feasibility of cultivating Hartbeespoort Dam microalgae 

      Brink, Jaco; Marx, Sanette (ETA-Florence Renewable Energies, 2011)
      Three cultivation experiments were conducted to grow microalgae in three consecutively scaled-up laboratory systems, which consisted of one, five and 135-litre bioreactors. The highest productivity achieved under optimum ...

    • Four novel methods for the harvesting of micro-algal biomass 

      Brink, Jaco; Marx, Sanette (ETA-Florence Renewable Energies, 2011)
      The harvesting of micro-algal biomass is one of the most inefficient and costly steps in the whole biomass-to-liquids (BtL) value chain. Harvesting costs may contribute between 20–30% of the total cost of micro­algal BtL ...

    • 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 ...

    • In-situ biodiesel production from sunflower seeds using liquefaction 

      De la Rey, Jaco; Marx, Sanette; Venter, Roelf (ETA-Florence Renewable Energies, 2015)
      One of the most expensive steps in the bio-diesel value chain is the extraction of oil from the seeds. Simultaneous extraction and transesterification will lower the overall capital costs of the process while enhancing ...