This special issue of the Process Safety and Environmental Protection Journal contains articles that were presented at the 8th International Conference on Environmental Engineering and Management, ICEEM08 held between 9-12 September 2015, in Iasi, Romania. The series of International Conferences on Environmental Engineering and Management (ICEEM) was initiated and organized every 2 years, since 2002, by the Department of Environmental Engineering and Management of the "Gheorghe Asachi" Technical University of Iasi, aiming to bring together international researchers, academics, professionals and students, activating in the fields of environmental engineering and management. of the previous editions were organised in Hungary (ICEEM06) and Austria (ICEEM07), the ICEEM conference language being exclusively English. The 8th ICEEM edition co-organiser was the Environmental Biotechnology section of the European Federation of Biotechnology. ICEEM08 included 8 plenary conferences held by renowned scientific personalities, 12 oral parallel sessions and 10 poster sessions, all grouped on the conference themes alowing the interaction of 209 international researchers, academics, professionals and young researchers from 22 countries. This special issue contains 14 articles with authors from five countries (France, Portugal, Romania, Republic of Moldova, Spain) that bring interdisciplinary research approaches to the following major conference themes: environmental monitoring, water and wastewater treatment, air pollution, soil pollution as well as improvement of process efficiency through synthesis and testing of new materials and process modeling.