Ali Khadir is an environmental engineer and a member of the Young Researcher and Elite Club, Islamic Azad University of Shahre Rey Branch, Tehran, Iran. He has published/prepared several articles and book chapters in reputed international publishers, including Elsevier, Springer, Taylor & Francis and Wiley. His articles have published in journals with IF > 4, including Journal of Environmental Chemical Engineering and International Journal of Biological Macromolecules. He also has been the reviewer of journals and international conferences. His research interests center on emerging pollutants, dyes and pharmaceuticals in aquatic media, advanced water and wastewater remediation techniques and technology. At present, he is editing other books for Springer in the field of nanocomposites, advanced materials, and the remediation of dye – containing wastewaters. Dr. Khum Gurung is a post-doctoral researcher in the Department of Separation Science at LUT University, Finland. He holds a PhD in Green Chemical Technology from LUT University in 2019. He has an excellent research experiences on various R&D works related to environmental engineering. He has published several peer-reviewed articles in internationally acknowledged publishers, such as Elsevier, Springer, MDPI etc. Most of his articles have published in high ranked international journals with impact factor of more than 5 since 2015, leading to his current h-index of 7, which are cited more than 230 times. Moreover, he has been the reviewer for many international journals and conference papers actively since 2016. His research mainly focuses on state-of-the-art as well as cutting-edge solutions for water/wastewater treatment (industrial and municipal), recovery of value-added resources from wastewater, energy sustainability in wastewater treatment plants, remediation of emerging pollutants from water/wastewater etc. 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.
