Kwan San (Oscar) Hui is a Full Professor in the Department of Mechanical Engineering at Prince Mohammad Bin Fahd University in the Kingdom of Saudi Arabia. Dr. Hui has been recognized among the world’s top 2% of scientists in the fields of Materials, Energy, and Nanoscience & Technology since 2020.

He has published 273 peer-reviewed SCI papers in leading journals, including Nature Communications, Energy & Environmental Science, Advanced Materials, and Advanced Energy Materials. His research focuses on advanced functional materials, electrochemistry, and next-generation energy-storage technologies, with particular interests in high-capacity electrode materials, fast-charging lithium-ion batteries, and sustainable energy materials.

Dr. Hui serves on several international expert panels, including the Slovak Research and Development Agency, and reviews proposals for the Newton International Fellowships at the Royal Society, UK. He is a Fellow of the Royal Society of Chemistry (FRSC, UK), a Fellow of the Higher Education Academy (FHEA, UK), and a Senior Member of the IEEE (USA).

Her research addresses critical environmental challenges in the Mediterranean region, specifically targeting olive mill wastewater. This wastewater is among the most significant agricultural and industrial wastes requiring treatment, characterized by high concentrations of dissolved salts, organic matter, phenolic compounds, and heavy metal ions.

Her recent work investigates the high adsorption capacity and low cost of natural Jordanian kaolinite, specifically focusing on how hydrochloric acid activation (PK-HCl) improves its structural and surface properties.

Through systematic adsorption experiments, her study demonstrated that PK-HCl achieved an approximately 54% removal efficiency for total phenolic compounds (compared to 32% for untreated kaolinite), alongside high efficiency in removing zinc, iron, and manganese ions. Her findings confirm that this cost-effective and environmentally friendly acid-activated adsorbent exhibits immense potential for advanced wastewater treatment.