Browsing Chemical Engineering by UP Author "Du Toit, Elizabeth Louisa"

Browsing Chemical Engineering by UP Author "Du Toit, Elizabeth Louisa"

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  • Axial variation of wetting efficiency and liquid-solid mass transfer in long trickle bed columns 
    Du Toit, Elizabeth Louisa; Joubert, Rita; Saayman, Francois; Nicol, Willie (American Chemical Society, 2014-01)
    The wetting efficiency and solid liquid mass transfer coefficient was measured separately and simultaneously using the electrochemical cell technique while varying the superficial liquid velocity and hydrodynamic state ...
  • Breakdown mechanisms of oil-in-water emulsions stabilised with Pluronic F127 and co-surfactants 
    Kabong, M.A. (Mwamb); Focke, Walter Wilhelm; Du Toit, Elizabeth Louisa; Rolfes, Heidi; Ramjee, Shatish (Elsevier, 2020-01-20)
    Please read abstract in the article.
  • Correlating multicomponent physical property data with Padé approximants : Part II. Projecting pure component behaviour 
    Pretorius, Franco; Dzingai, Pethile; Du Toit, Elizabeth Louisa; Focke, Walter Wilhelm (Elsevier, 2024-03)
    Physical property data obtained for binary mixtures are conventionally fitted in excess form using the Redlich-Kister equation. The ternary data is then estimated using projections of the binary behaviour on the basis of ...
  • Deep eutectic solvents for solid pesticide dosage forms 
    Phillips, Justin; Focke, Walter Wilhelm; Du Toit, Elizabeth Louisa; Wesley‑Smith, James (Nature Publishing Group, 2020-11-26)
    Deep eutectic solvents aid the formulation of solid pesticide dosage forms for water-insoluble actives. This was demonstrated by encapsulating Amitraz powder in a low-melting matrix based on the eutectic mixture of urea ...
  • Dextrin nanocomposites as matrices for solid dosage forms 
    Phillips, Justin; Venter, Jaco-Louis; Atanasova, Maria Todorova; Wesley-Smith, James; Oosthuizen, Hester; Emmambux, Mohammad Naushad; Du Toit, Elizabeth Louisa; Focke, Walter Wilhelm (American Chemical Society, 2020-03)
    Safe application of water-insoluble acaricides requires fast release from solid dosage systems into aquatic environments. Dextrin is a water-soluble form of partially hydrolyzed starch, which may be used as matrix material ...
  • Effect of fines content on bubble properties in a two-dimensional fluidized bed by digital image analysis 
    Van Biljon, C.; Du Toit, Elizabeth Louisa; Nicol, Willie (South African Institute of Chemical Engineers, 2012)
    The effect of fines content in fluid catalytic cracking (FCC) catalyst on bubble properties was investigated by considering two catalyst batches. One contained fewer fines and had a Sauter mean diameter of 83 μm while the ...
  • Extruded cellulose/ionic liquid carbon scaffolds 
    Oosthuizen, Hester; Du Toit, Elizabeth Louisa; Focke, Walter Wilhelm (American Institute of Physics, 2020-11)
    Monolithic carbon scaffolds were obtained by pyrolysis of regenerated cellulose. First, microcrystalline cellulose was compounded, at a 1:1 mass ratio, with 1-ethyl-3-methylimidazolium acetate, choline chloride or a mixture ...
  • Kinetic model for the dimerisation of 1-hexene over a solid phosphoric acid catalyst 
    Schwarzer, Renier Bernhard; Du Toit, Elizabeth Louisa; Nicol, Willie (Elsevier, 2008-05)
    Batch kinetic experiments at 150 °C, 200 °C and 250 °C showed that the reaction can be modeled with a three step sequential reaction scheme. This involves firstly linear isomerisation of 1-hexene followed by skeletal ...
  • Mosquito repellent thermal stability, permeability and air volatility 
    Mapossa, António Benjamim; Sitoe, Alcides Everildo José; Focke, Walter Wilhelm; Izadi, Homa; Du Toit, Elizabeth Louisa; Androsch, Rene; Sungkapreecha, Chanita; Van der Merwe, E.M. (Elizabet Margaretha) (Wiley, 2020-03)
    Please read abstract in the article.
  • Spontaneous microencapsulation of geraniol by zein 
    Ferreira, I.V.W. (Ignatius); Focke, Walter Wilhelm; Du Toit, Elizabeth Louisa (Budapest University of Technology, 2018)
    Geraniol was successfully micro-encapsulated with zein in a one-step phase separation process in which the zein and geraniol were both initially dissolved in a water-ethanol mixture. Microcapsules were only formed at ...