**About the Editors**

#### **Heike Lorenz**

Heike Lorenz studied Chemistry at Freiberg University of Mining and Technology and received her Ph.D. from the Otto von Guericke University Magdeburg. After research periods there and at the Max Planck Institute for Dynamics of Complex Technical Systems in Magdeburg, she obtained her habilitation with a thesis on heterogeneous processes based on the example of the combustion of solids and crystallization from solution. Since 1998, she has been Senior Researcher at the mentioned Max Planck Institute and is heading the crystallization research team. In 2010, she was appointed as apl. Professor at Otto von Guericke University. Heike Lorenz has authored or co-authored more than 180 papers, 11 book contributions, and has edited 2 international conference books. She is a member of the European Federation of Chemical Engineering's (EFCE) Working Party on Crystallization and the Crystallization Board of DECHEMA/VDI-GVC's ProcessNet in Germany. Her research interests include crystallization for separation process and product design, process monitoring, and purification of fine chemicals, large-scale industrial and natural products. Since 2019, she is a member of the Editorial Board of *Crystals* and Editor-in-Chief of its *Industrial Crystallization* section.

#### **Alison Emslie Lewis**

Alison Emslie Lewis is Dean of the Faculty of Engineering and the Built Environment at the University of Cape Town. She has undergraduate, Master's and PhD degrees in Chemical Engineering from the University of Cape Town and more than 25 years of teaching and research experience. She founded the Crystallisation and Precipitation Research Unit at the University of Cape Town, a University-accredited Research Unit that focusses on Industrial precipitation and crystallization, particularly water treatment and recovery of value from effluent streams and Eutectic Freeze Crystallization.

There is a strong focus on precipitation in hydrometallurgy, particularly Rare-Earth Element recovery, metals and metal salts production and recovery and design and optimisation of precipitation processes.

She has supervised postgraduate degrees on a range of academic and industrially applied research projects and is the author of 81 peer-reviewed journal publications, a patent and 12 book contributions, including being the lead author on Lewis et al (2015)\*.

Professor Lewis has been a Visiting Professor at the Swiss Federal Institute of Technology (EPFL), Sion, Valais, Switzerland; the University of Sheffield and the University of Mauritius. She is a Professional Engineer and a Fellow of the Institute of Chemical Engineers (FIChemE). \*Lewis, A E, M M Seckler, H Kramer, and G M van Rosmalen. 2015. *Industrial Crystallization: Fundamentals and Applications* (Cambridge University Press).

#### **Erik Temmel**

Erik Temmel studied chemical process engineering at the Otto von Guericke University and received his Ph.D. for research on continuous crystallization at the Max Planck Institute in Magdeburg. After several post-doctoral fellowships, e.g., at DSM (Switzerland), he is now heading the R&D team for crystallization at Sulzer Chemtech Ltd (Switzerland) and lectures on melt crystallization at the Technical University Dortmund.
