S
S.P. du Preez
Researcher at North-West University
Publications - 23
Citations - 561
S.P. du Preez is an academic researcher from North-West University. The author has contributed to research in topics: Catalysis & Ferrochrome. The author has an hindex of 11, co-authored 22 publications receiving 298 citations. Previous affiliations of S.P. du Preez include Northwest University (China) & Swansea University.
Papers
More filters
Journal ArticleDOI
Review of Cr(VI) environmental practices in the chromite mining and smelting industry: relevance to development of the Ring of Fire, Canada
Johan P. Beukes,S.P. du Preez,P. G. van Zyl,Dogan Paktunc,Timo Fabritius,M. Päätalo,M. Cramer +6 more
TL;DR: In this paper, relevant mining and/or smelting processes were considered within the context of possible prevention and mitigation of hexavalent chromium, Cr(VI), formation, and the treatment of possible Cr (VI) containing waste materials.
Journal ArticleDOI
Hydrogen generation by the hydrolysis of mechanochemically activated aluminum-tin-indium composites in pure water
S.P. du Preez,Dmitri Bessarabov +1 more
TL;DR: In this article, a series of bi-and ternary Al, Sn, and/or In composites were mechanochemically prepared and their reactivities towards neutral pH water at ambient conditions determined.
Journal ArticleDOI
Evaluation of emissions and exposures at workplaces using desktop 3-dimensional printers
Aleksandr B. Stefaniak,Alyson Johnson,S.P. du Preez,Duane R. Hammond,J.R. Wells,Jason E. Ham,Ryan F. LeBouf,K.W. Menchaca,Stephen B. Martin,Matthew G. Duling,Lauren N. Bowers,Alycia K. Knepp,Feng-Chiao Su,D.J. de Beer,J.L. Du Plessis +14 more
TL;DR: Evaluated atmospheres in four workplaces utilizing desktop "3-dimensional" (3-d) printers for production, prototyping, or research found variability in emission rate values reflected variability from the printers as well as differences in printer design, operating conditions, and feedstock materials among printers.
Journal ArticleDOI
Hydrogen generation of mechanochemically activated Al-Bi-In composites
S.P. du Preez,Dmitri Bessarabov +1 more
TL;DR: The individual and combined effects of Bi and In on the morphology change and reactivity towards hydrogen release of Al during mechanochemical preparation of binary and ternary Al composites were determined.
Journal ArticleDOI
The effects of bismuth and tin on the mechanochemical processing of aluminum-based composites for hydrogen generation purposes
S.P. du Preez,Dmitri Bessarabov +1 more
TL;DR: In this article, the microstructural properties and hydrolysis reactivities of activated Al-Bi-Sn composites were investigated using a high-energy mechanochemical processing route and their reactivities towards pure water under standard ambient conditions were determined.