Skills and Expertise Water Treatment Environment Wastewater Treatment Water and Wastewater Treatment Water Engineering Adsorption Civil Engineering Energy Sustainable Development Water Quality Awards and honours 2021: top 0.15% (46th out of 30530) of scholars on the topic of disinfection in the last 10 years, according to Expertscape (PubMed database); 2021: 8306-th most cited author in the world and 82-th (out of 77304, second Italian in the ranking), for the Environmental Science category according to the "Top 100,000 scientists in the world on a single year (2020)" ranking (also known as Stanford's rank), by Baas et al., 2021, Scopus database (https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw/3); 2021: 55389-th most cited author in the world and 285-th (out of 77304) for the Environmental Science category according to the ranking of the "Top 100,000 scientists in the world on career", by Baas et al., 2021, Scopus database (https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw/3)