• Refractometry models for compositional analysis of binary and ternary mixtures 

  Pretorius, Franco (University of Pretoria, 2024-01-26)

  A review of existing compositional binary mixture models for refractive indices was undertaken and showed that they can be recast in forms that are linear in mole or volume fraction. Typically, mole fractions proved to be ...
• Poly(lactic acid) filament filled with layered double hydroxide for fused deposition modelling; optimisation of additive fraction and material extrusion parameters 

  De Bruin, Philip (University of Pretoria, 2024-07-31)

  The optimum layered double hydroxide (LDH) loading in poly(lactic acid) (PLA) filament, layer height, nozzle temperature and infill density levels were determined by statistically maximising the ultimate tensile stress of ...
• Multispecies bacterial attachment to A106 GB industry-finished steel used in heat exchangers 

  Prithiraj, Alicia (University of Pretoria, 2024-06-19)

  Multispecies bacterial attachment to industrial-finished alloys is not understood. It is not well understood as to why certain bacterial species selectively attach to differently finished steel surfaces. It is also a matter ...
• Plasma-vernietiging van rubberskroot : teoretiese en eksperimentele onderbou 

  Jansen, Arnold Alexander (University of Pretoria, 2023-12)

  Afrikaans: Die oorhoofse doelwit van hierdie navorsing was die onwikkeling van ʼn reaktorkonsep en vloeidiagam vir ʼn vervoerbare plasma-gebaseerde eenheid vir die prosesering van skrootrubber. Die projek het voor die ...
• Novel solid phase synthesis of a visible-light-active p-n heterojunction CuS/ZnS photocatalyst for wastewater treatment applications 

  Mugumo, Rachel (University of Pretoria, 2023-12-21)

  Water contamination by toxic organic chemicals is a major global environmental concern leading to photocatalytic technologies applied in wastewater treatment. The aim of this work was to investigate a new, simple one-pot ...
• Microbial fuel cells : the effect of granular activated carbon and graphite as growth substrates on bioelectrogenesis by Geobacter sulfurreducens 

  Van Heerden, Xandra (University of Pretoria, 2019-12)

  There is an increasing demand for environmentally sustainable alternative energy sources as the supply of fossil fuels dwindles and the concern about our carbon footprint continues to increase. Bioelectrogenesis is a process ...
• Simultaneous pH and EC control in hydroponics through real-time manipulation of the ammonium-to-nitrate ratio in the nutrient solution 

  Bosman, Roger Clive (University of Pretoria, 2024-03)

  A control algorithm was developed and tested on a hydroponic ebb-and-flow system to assess the efficacy of the proposed control scheme. Three experimental runs were conducted with the purpose of testing the proposed control ...
• Inactivation of Critically Ranked Carbapenem Resistant Bacteria and Genes in a Batch Atmospheric Plasma Reactor. 

  Mosaka, Thabang B.M. (University of Pretoria, 2023-12-31)

  Wastewater treatment plants (WWTPs) have been observed to be direct key reservoir of both antibiotic resistant bacteria (ARBs) and antibiotic resistant genes (ARGs) associated with human infection as high concentrations ...
• Characterisation of fischer-tropsch wax/LLDPE blends 

  Mhlabeni, Thobile Lillian (University of Pretoria, 2023-08-17)

  Wax is often used as a processing additive in polymer compounding, particularly in thermoplastic processing, due to its ability to improve processability. Wax acts as an external lubricant in the polymer melt, reducing the ...
• Assessment of a continuous-flow atmospheric air dielectric barrier discharge in the degradation of tramadol, cefixime, and carbamazepine in aqueous solutions 

  Babalola, Samuel Olatunde (University of Pretoria, 2024-02-26)

  Active pharmaceutical contaminants which are constantly released into both surface and ground water through wastewater treatment plants (WWTP), run-off from agricultural fields, excretion, and disposal of unused or expired ...
• Promoting circular economy and sustainable construction practices : investigating the integration of waste upcycling for a greener future, with a focus on eggshell and eggshell membrane utilization 

  Aina, Samuel Tomi (University of Pretoria, 2023-09-20)

  As climate change continues to take the centre stage among issues of global discuss, carbon heavy industries including construction and agriculture continue to discover possible ways to foster the implementation of cleaner ...
• Performance measures of an active, small scale solar basin still in terms of production cost an energy efficiency 

  Adu-Awuku, Emmanuel (University of Pretoria, 2024-01-31)

  The research investigated the characterisation of a cost-effective active solar still by implementing active solar still recommendations suggested by Marais (2018) and external condenser design improvements identified in ...
• Empirical modelling in non-linear predictive control : a coffee roaster application 

  Bolt, Cameron E. (University of Pretoria, 2023-12-12)

  This dissertation presents the development and implementation of a model predictive control (MPC) system for a coffee roasting process, to optimise roasting quality while minimising energy consumption. The study involved ...
• Dried Xanthan Gum/Nanocellulose for Thermoplastic Starch Reinforcement 

  Hoek, Zian (University of Pretoria, 2024-02-05)

  Nanocellulose fibres are known to enhance the mechanical properties of biopolymers by acting as a reinforcing additive. However, the formation of irreversible hydrogen bonds and subsequent agglomeration upon drying means ...
• Aerobic polishing of liquid digestate for the preparation of hydroponic fertiliser 

  Mathe, Lebani Oarabile Joy (University of Pretoria, 2024-01-29)

  Nitrogen and phosphorus form the backbone of most lifeforms on earth, however, improper management of these nutrients has devastating effects on the environment. These effects can be lessened by the use of the anaerobic ...
• Plantwide control of an SO2 abatement plant 

  Crafford, Minèt (University of Pretoria, 2023)

  This study focused on an SO2 abatement plant for a platinum group metal (PGM) smelting electric furnace. A systematic approach, using a simulated model of the plant, was followed to investigate plantwide control measures ...
• Nickel Ferrite/Polyaniline Nanocomposite doped with 2-Naphthalene sulfonic acid as aqueous chromium adsorbent 

  Kasavo, Ruth Nzisi (University of Pretoria, 2023)

  Chromium is one of the most toxic heavy metals found in many industrial effluents due to its ability to easily enter the human body and cause serious health problems. In this study, the ability of a nanocomposite of nickel ...
• Comparative screening study on the adsorption of Aqueous Pb(II) using different metabolically inhibited bacterial cultures from industry 

  Kpai, Yawo Patrick (University of Pretoria, 2023)

  The current study aimed at investigating the bioremediation removal effectiveness of Pb(II) by metabolically inhibited microbial cultures: a) Waste activated sewage sludge obtained from a local wastewater treatment plant ...
• The effect of pH control on ammonium release in anaerobic digestion 

  Gonde, Lonestar (University of Pretoria, 2023)

  Anaerobic digestion is a process whereby microorganisms break down waste material into simpler compounds, while simultaneously producing biogas that is generally high in methane and carbon dioxide content (60 –70 % and 30 ...
• Combustion performance of self-assembly ternary pyrotechnic time-delay compositions 

  Guo, Shasha (University of Pretoria, 2022-12)

  Pyrotechnic compositions are usually employed in time delay detonators to facilitate controlled initiation of explosive charges in mining and quarrying operations. Traditional fast and slow-burning formulations are ...

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