**Meet the editor**

Hlanganani Tutu is an associate professor in environmental chemistry at the University of the Witwatersrand, South Africa. He obtained his PhD degree in Environmental Chemistry from the same university in 2006. His research interests include geochemical modelling of solute transport, designing remediation strategies for contaminated environments, recovering value from

waste and chemometric data modelling. He teaches courses in general chemistry, environmental chemistry and geochemical modelling and has supervised a number of research projects. He has published many articles in international scientific journals and chapters in books.
