Caroline Cristina Rubina Acuna

Dr. Caroline Cristina Rubina Acuna

orcid

Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 September 2025 in Chemical Engineering Journal Advances
Verified
Journal Article
Open access
CACaroline Cristina Rubina Acuna
Caroline Cristina Rubina Acuna
EOE.A. Oraby
E.A. Oraby
GBG.A. Bezuidenhout
G.A. Bezuidenhout
JBJane Beh
Jane Beh
JEJacobus Johannes Eksteen
Jacobus Johannes Eksteen

13 October 2025 in Separations
Verified
Journal Article
Open access
PDF file
CACaroline Cristina Rubina Acuna
Caroline Cristina Rubina Acuna
EOElsayed Oraby
Elsayed Oraby
GBG. A. Bezuidenhout
G. A. Bezuidenhout
JBJane Beh
Jane Beh
JEJacobus Johannes Eksteen
Jacobus Johannes Eksteen
Platinum’s unique properties, such as its high resistance to corrosion and high temperatures, are driving an increased use in modern technologies and advanced chemistry. However, the World Platinum Investment Council has projected, for the third consecutive year, a global deficit of platinum for 2025 and a negative forecast until 2029, highlighting the need for the development of new metallurgical methodologies to recover platinum but also to recycle product containing it. The use of alkaline amino acid (glycine) promises a highly selective and more environmentally friendly recovery methodology. Over the Platinum Group Metals, recovery studies have been performed only on palladium, but no published literature over platinum was found. This study investigated the feasibility of platinum adsorption from alkaline glycine solutions under various operational conditions using activated carbon. Results are demonstrating that platinum can be successfully recovered under the effects tested: 92.37–97.93% (carbon dosage), 70.00–95.72% (temperature), 94.08–97.39% (pH), 95.16–96.23% (platinum concentration), 95.72–96.53% (glycine concentration), and 95.72–97.12% (cyanide concentration). The scientific significance of this study lies in the confirmation for the potential use of a more environmentally friendly approach to recover platinum as opposed to the current cyanide and acidic chloride system.