**About the Editor**

#### **Stanisław Wacławek**

Stan, during his scientific career, visited, among others, the University of Guelph (Canada) and the University of Cincinnati (USA), where he conducted research on sulfate radical-based processes. He is in 2% of the most-cited scientists in the world, according to Scopus and a Publons 2019 awardee: the top 1% of reviewers in Environment and Cross-Field. He serves on the editorial board of, e.g., {Chemical Engineering Journal} (IF: 13.273) and {Catalysts} (IF: 4.146). In 2022 he starts the Associate Professor position at the Technical University of Liberec.
