Dr. Stephanus P. Du Preez

Stephanus du Preez completed his BSc Chemistry, Mathematics and Applied Mathematics and a BSc (Honors) in Chemistry in 2012.  In 2014, he completed a MSc in Chemistry (cum laude), focusing on the oxidation of chromium present in chromite dust as it passes through off-gas flaring stacks.  In 2017, he obtained his PhD in Chemistry, titled “Ferrochromium waste management – addressing current gaps” from the North-West University (NWU), Potchefstroom Campus, South Africa.  His PhD studies focused on environmental, waste management and process related aspects of the ferrochromium production process, with the main focus on lowering electrical consumption of the smelters, reducing the carbon footprint, rehabilitation of hazardous process residues and recovery of valuables from various process residue streams.  In 2018, he completed a MEng in Chemical Engineering (cum laude), were his studies focused on the mechanochemical activation of aluminum for hydrogen generation purposes using neutral pH water.  Up to date, he has published 21 internationally accredited, peer-reviewed papers in scientific and engineering journals and holds a Netherlands patent, titled “Activation compounds for hydrogen generation“.

He is currently enrolled with HySA Infrastructure at the NWU in a post-doctoral research program in the area of hydrogen-related technologies under the mentorship of Dr. Dmitri Bessarabov.

Stephanus was a visiting Rutherford Fellow from 01/2019 to 04/2019, under the supervision of Dr. Charles Dunnill as part of the Strategic partnership grant from BEIS and the HYENA Network.  He was tasked with developing a flame-less hydrogen burner for domestic applications.  The idea behind the device is to minimize the use of indoor solid fuel combustion as a means to prepare food.  By doing so, the ambient household air-quality will improve significantly, which will likely alleviate health issues relating to poor-air quality exposure/inhalation.

During his four month fellowship, he published two papers on the development of materials for catalytic hydrogen combustion.


A surface micrograph of the in-house developed and produced catalytic system.


An example of our specialized material in action.


Scopus author ID: 56808338200

ORCID ID: 0000-0001-5214-3693 Google Scholar HYSA

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