Seyedmehdi Sharifian received his PhD in chemical engineering from the Vienna University of Technology and then worked as a postdoctoral researcher at the University of Tehran. From 2018 to 2022, he worked as an assistant professor at the same university. He was the head of the Sustainable and Green Chemical Processes Research Laboratory. Now he is a postdoctoral research associate at Purdue University. His research interest is generally in separation processes in chemical processes. One of his major research interests is wastewater treatment systems by adsorption and oxidation processes. In addition to being the author of numerous scientific papers, he is also a reviewer for many relevant journals, mainly in the areas of wastewater treatment, water quality, oxidation processes, and processing of biowaste into value-added products. Mika Sillanpää is a professor at the University of Johannesburg, South Africa. His research centers on chemical treatment in environmental engineering, environmental monitoring, and resource recovery from waste streams.Sillanpää received his M.Sc. (Eng.) and D.Sc. (Eng.) degrees from the Aalto University where he also completed an MBA degree in 2013. Since 2000, he has been a full professor/adjunct professor at the University of Oulu, the University of Eastern Finland, the LUT University, the University of Eastern Finland and the University of Johannesburg.He has received numerous awards for research and innovation. He is the first Laureate of Scientific Committee on the Problems of the Environment (SCOPE)’s Young Investigator Award, which was delivered at the UNESCO Conference in Shanghai 2010 for his “significant contributions, outstanding achievements and research leadership in Environmental Technological Innovations to address present water pollution problems worldwide, especially with regard to wastewater treatment and reuse. In 2011, he was invited to act as a Principal Scientific Reviewer in the GEO-5 report of the United Nations Environmental Programme (UNEP). In 2012, he received Tapani Järvinen Environmental Technology Award and Publication Award of the Lappeenranta University of Technology. In 2014, he received the Science Award of the Lappeenranta University of Technology and Pro Mikkeli Award. In 2018, he was invited as a Member of the Finnish Academy of Sciences and Letters and Technology Academy of Finland. He also received Literature award from the Water Association of Finland in 2018. Neda Asasian-Kolur received her Ph.D. in Chemical Engineering from the Amirkabir University of Technology in 2013. She has been an assistant professor at the University of Tehran since 2017, and is currently working as a post-doc at Vienna University of Technology (TU Wien). She is the head of the adsorption research laboratory at the University of Tehran, and every year many graduates complete their studies under her supervision. To date, she has authored many peer-reviewed publications on environment-related topics. Her research interests include wastewater treatment, adsorption processes, preparation, surface functionalization, and characterization of adsorbents/catalysts for environmental purposes. She is the reviewer of many well-known journals in environmental chemistry research fields.