Prof Tobi Louw – A critique on the application of machine learning in chemical engineering

In his lecture, A critique on the application of machine learning in chemical engineering, Prof Tobi Louw reflected on the growing influence of machine learning across industries and its disruptive potential within chemical and minerals processing. While recognising the opportunities these technologies present, he critically examined the challenges that limit their sustainable application. He began by considering the unique characteristics of the industry, before addressing the conflicting ideas and assumptions that cloud decision-making and hinder implementation. He concluded by emphasising academia’s responsibility in enabling innovation through rigorous training and the dissemination of knowledge.

Tobi’s academic journey began at the University of Pretoria, where he completed his undergraduate degree in 2007. He went on to earn a PhD from the University of Nebraska-Lincoln in 2013 for his work on mathematical modelling of ultrasonic bioreactors. After a postdoctoral fellowship at the University of Cape Town, he joined Stellenbosch University in 2015, where he has since played an integral role in both teaching and research.

Throughout his career, Tobi has pursued the simulation of complex and dynamic processes, a path that naturally led him into the field of machine learning. At Stellenbosch, he is part of the Department’s Machine Learning research group, which applies advanced mathematical and statistical methods to process modelling, monitoring, and control. He also leads the Data Analytics for Process Engineers focus area of the structured MEng (Chemical Engineering) programme, ensuring that students are equipped with the latest tools and methods to meet industry needs. Beyond research and teaching, Tobi contributes to strengthening the profession through his leadership as president of the South African Council for Automation and Control (SACAC), where he has facilitated conferences, symposia, and industry-academic collaboration.

Prof Neill Goosen – The journey of becoming an accidental professor

Prof Neill Goosen’s lecture, The journey of becoming an accidental professor, traced his career path and highlighted the research themes that have defined his work. Rooted in a lifelong interest in agriculture and the food system, his research spans from recovering proteins from food processing by-products—such as fish off-cuts and spent brewing grains—back into the food chain, to extracting specialist compounds from seaweeds. He also explored how bioenergy production can unlock value from low-grade biomass, producing both renewable energy and fertiliser. A recurring theme in his lecture was the interconnectedness of systems: food, water, and energy. His research aims to identify synergies across these sectors to make better use of scarce natural resources.

Neill also addressed his work in catalysis research, focusing on optimising reaction conditions and developing new catalysts. His ongoing work investigates ways to produce renewable hydrogen from water using sunlight as an energy source—a field that could transform the global energy landscape. By weaving together his experiences, Neill demonstrated how his career has been shaped less by a straight path and more by following opportunities that link chemical engineering to agriculture and sustainability.

Raised on a farm in the Eastern Cape, Neill matriculated from Hangklip High School in Queenstown (now Komani) before enrolling at Stellenbosch University in 2002. What began as a traditional undergraduate path in chemical engineering quickly evolved when he pursued a master’s degree focused on aquaculture. After gaining experience on a trout farm in Scotland and in engineering design in London, he returned to Stellenbosch to complete his PhD in 2014. He joined the Department of Chemical Engineering as a lecturer in 2013, gradually building a career that now spans academic leadership, international collaboration, and industrial consulting.

Neill’s research continues to combine engineering expertise with agricultural challenges. His work has supported the development of protein and seaweed processing facilities, created biostimulants from fish and seaweed by-products, and even resulted in patents for cannabinoid recovery processes in medical applications. Between 2020 and 2023, he led the ARUA Centre of Excellence in Energy, extending his influence to pan-African collaboration in resource sustainability. With more than 65 journal publications, four patents, and the supervision of 40 postgraduate students, Neill embodies the role of an engineer committed to sustainability, innovation, and practical solutions for the future of food and energy systems.

To watch Professors Tobi Louw’s and Neill Goosen’s inaugural lectures, click here.