Dr Pardeep Singh is presently working as an Assistant Professor at the Department of Environmental Science, PGDAV College, University of Delhi, India. He obtained his master's degree from the Department of Environmental Science at Banaras Hindu University, Varanasi India in 2011. He obtained his doctorate from the Indian Institute of Technology (Banaras Hindu University) Varanasi in the year 2017. The area of his doctoral research is the degradation of organic pollutants through various indigenous isolated microbes and by using various types of photocatalytic. He has published more than 35 papers in international journals in the field of waste management. Dr. Suruchi Singh is presently working as Faculty in the Department of Botany, Sunbeam College for Women, India. She obtained her PhD from Banaras Hindu University, India in Botany with Environmental Science as major field. Dr Singh received her postdoctoral experiences in Department of Botany, Banaras Hindu University under Council of Scientific and Industrial Research and Department of Science and Technology. She has published articles in various international journals and books series (>40 peer reviewed articles). In her research, she has identified processes and activities where environmental efficiencies of selected crop plants must be increased against UV-B and tropospheric Ozone. Mika Sillanpää’s research work centers on chemical treatment in environmental engineering and environmental monitoring and analysis. The recent research focus has been on the 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.