The editors were actively involved in the 2022 4th International Conference on Environment Sciences and Renewable Energy (ESRE), as a conference chairman, the session chairpersons and the oral research presenters. They published over 500 peer-reviewed papers, with more than 30,000 citations. Their cumulative h-factor exceeds 130. Jan Baeyens studied nuclear engineering (Brussels-Belgium) and chemical engineering (Leuven-Belgium). He obtained his Ph.D. at the Postgraduate School of Powder Technology (Bradford-U.K.). He was employed in engineering divisions of various companies (1975-1988) and became a part-time professor at the University of Leuven, while also working as a process and project consultant in Europe and overseas. He joined the University of Antwerp as a full professor (2005-2007) and was the chair holder of the U.K. Royal Academy of Engineering at the University of Birmingham (UK) and at the University of Warwick (UK) (2007-2013). Since October 2011, he has been a visiting professor at the Beijing University of Chemical Technology (BUCT) and a principal investigator of the Beijing Advanced Innovation Centre for Soft Matter Science and Engineering (also BUCT) with research actions in environmental and renewable energy. He co-supervises Ph.D. and M.Eng. research at KU Leuven and at BUCT. He wrote numerous peer-reviewed papers in international journals, and he is the author and editor of 14 books and a regular speaker at international congresses. He is the guest editor for Elsevier journals and an editorial board member of various journals such as Energies, Standards and Frontiers of Chemical Science and Engineering. Raf Dewil studied chemical engineering (Leuven-Belgium) and obtained his Ph.D. at the University of Antwerp. He is a full professor at the Department of Chemical Engineering of KU Leuven and a visiting professor at the Engineering Science Department of the University of Oxford. Prof. Dewil's research interests are mainly in the field of resource recovery and the degradation of hazardous organic components from water and wastewater. In (waste)water treatment, most emphasis in his research is on the application of photochemical and electrochemical advanced oxidation processes (AOPs), including the application of novel photo- and electrocatalytic materials. He has co-authored numerous peer-reviewed papers in international top journals in the fields. He is the editor-in-chief of the Journal of Environmental Management and an editorial board member of various international journals such as Chemical Engineering Journal and Renewable Energy. Barbara Rossi studied civil engineering in Belgium. After having received the Arcelor Prize (2003) for her Master's thesis, she joined the National Fund for Scientific Research as a doctorate fellow and completed her Ph.D. on the structural behaviour of stainless steel profiles in 2009. During her doctorate study, she obtained competitive funding from Rotary International to collaborate with the University of Sydney and Imperial College London. As a postdoctoral researcher, she worked principally on the strength of hot cross sections and cold-formed profiles in view of a more rational exploitation of their material strengths in structures. As a full professor at the Department of Civil Engineering, KU Leuven (2013), she led a research group focusing on the development of design guidance for metallic structures. Between 2013 and 2019, her team's research projects led to the amendments of the EUROCODES on the stability of stainless steel structures and fatigue behaviour of hot-dip galvanised steel structures. In 2019, she started her new academic career at the University of Oxford and expanded her core research activities towards the study of hybrid structures in harsh environments and structures obtained via additive manufacturing. Over the last 10 years, she became a recognised expert into the area of