“Dr Ali Johra Said earns PhD at VUT for pioneering biodiesel research using steel slag. A story of grit, science, and academic triumph.”
19 September 2025 | Story By: Thabisang Thebeeapelo | Picture: Peter Masela
2 minutes read time.
Dr Ali Johra Said, originally from Kenya, was conferred with a Doctor of Philosophy (PhD) in Chemical Engineering on Tuesday, 16 September 2025, at the Vaal University of Technology (VUT). Her groundbreaking thesis, “Biodiesel Production from Waste Cooking Oil Using Iron and Steel Industry Slag as Heterogeneous Catalyst,” contributes significantly to the global push for renewable energy solutions.
As the world increasingly shifts towards sustainable alternatives to fossil fuels, Dr Said’s research highlights the potential of industrial waste, iron and steel slag as an efficient and eco-friendly catalyst in biodiesel production.
Reflecting on her journey, she described the feeling of earning her PhD as “very satisfying,” noting the countless nights spent in the lab. “Monday to Monday, with no weekends and no social life.” “I am so proud of myself,” she said. Her path underscores the importance of perseverance and self-belief.
Dr Said emphasised that a PhD is never a solo achievement. “Obtaining a PhD is not a single person journey, it’s a collaboration,” she shared, expressing gratitude for the support she received from her faculty, especially through mentorship and conference opportunities.
Despite the triumph, challenges were part of her story. The lack of advanced science facilities at VUT proved to be one of her biggest obstacles. However, she overcame this through strong networks that enabled her to carry out essential analyses.
Offering words of inspiration, Dr Said said, “In a world of Artificial Intelligence (AI) and people thinking AI is taking over everything, it cannot replace the intellect of the human brain. The best way to manifest that intellect is through education. So go out there, further your studies, and believe in yourself.”
She extended heartfelt thanks to her supervisor, Professor Hilary Rutto, her fiancé, and her beloved mother and son in Kenya, whose support and encouragement were instrumental throughout her academic journey.
Dr Said’s success is a beacon for young scholars, particularly women in STEM, demonstrating that with determination, support, and vision, no goal is out of reach.