Daniele Di Trapani graduated in “Environmental Engineering” at Palermo University in 2004. He has been Ph.D. Student in the period 2006-2008, spending almost one year as visitor Ph.D. student at the Norwegian University of Science and Technology in Trondheim (Norway), under the supervision of Professor Hallvard Ødegaard. The topic of his research focused on the use of advanced processes for wastewater treatment and in particular on hybrid MBBR (moving bed biofilm reactor) systems. He received the Ph.D. degree from the University of Palermo, after the Final Dissertation of his original thesis “Reattori ibridi a biomassa sospesa e adesa per il trattamento delle acque reflue”. The supervisor of his PhD thesis was Professor Gaspare Viviani. He got a Post Doctoral position at the Department of Hydraulic and Environmental Engineering of Palermo University, which research topic was the analysis of the biokinetic behaviour of hybrid moving bed biofilm reactors. At present he is a Post Doctoral Fellow at the Department of Civil, Environmental, Aerospace, Materials Engineering (DICAM), in a research project which focuses on biological treatment of saline slops contaminated by hydrocarbons. He also works in the fields of contaminated Soil Remediation and Municipal Solid Waste management, focusing in particular with uncontrolled methane emissions from the surface of sanitary landfills as well as with leachate production and distribution inside MSW landfills.