Naadhira Seedat is a senior lecturer in the department of chemical engineering technology at the University of Johannesburg. Her research and community work focuses on transforming waste materials into value-added products, which addresses environmental and societal needs. Her core research project focuses on the thermochemical conversion of food and yard waste through hydrothermal carbonisation to produce hydrochar. This project tackles the municipal waste crisis by offering a sustainable method of waste diversion from landfills, which reduces greenhouse gas emissions and foul odours. Hydrochar has significant potential as an adsorbent in water purification and biogas treatment, making clean water and sustainable energy more accessible. The enhanced surface area of the activated hydrochar proved effective in removing heavy metals such as chromium, copper and lead from water samples. And hydrochar can be commercialised. This project reflects a commitment to redesigning systems and processes to manage waste sustainably and extract value from it, thus supporting a circular economy and aligning with multiple United Nations sustainable development goals including: SDG 6 (clean water), SDG 7 (affordable and clean energy) and SDG 11 (sustainable cities and communities). This research also aligns with the national bioeconomy strategy, presenting opportunities for industry partnerships to support the biorefinery concept.
Educational Qualifications
- Doctor of Philosophy (Chemical Engineering), University of the Witwatersrand
- Master of Science (Chemical Engineering), University of the Witwatersrand
- Bachelor of Science (Chemical Engineering), University of the Witwatersrand
- Postgraduate Diploma in Higher Education (current), University of Johannesburg
- Professional Engineering Registration, Engineering Council of South Africa
Greatest achievements
- The results of the project have been internationally accepted in peer-reviewed international scientific journals.
- The successful conversion of food and yard waste into a value-added product to be commercialised.
- The value-added product, hydrochar, was enhanced through activation, which improved the adsorption capacity of the hydrochar.
- The enhanced surface area of the activated hyrdochar proved effective in removing heavy metals such as Chromium, Copper and Lead from water samples.
- Being nominated for the UJ vice-chancellor’s Distinguished Teacher Award 2024 for integrating the research findings into her teaching practices
What advice would you give to future generations?
Our planet’s resources are finite, and it’s up to you to use them wisely and protect the ecosystems that sustain life. Embrace the values of sustainability in your everyday choices, advocate for environmental protection and lead with empathy for people, animals and the planet. Remember, real change begins with small actions, and together, these add up to monumental shifts. By caring for our Earth, we ensure a future where biodiversity flourishes, climate stability is within reach, and all beings have the chance to thrive.