G04. Editor: R.O. Abdel Rahman, M.I. Ojovan, G.Z. Kyzas, Y.-T. Hung; Special Issue title: Environmental Chemistry: Remediation of Radioactively Contaminated Sites; Journal: Journal of Chemistry; Publisher: Hindawi.
G03. Editor: G.Z. Kyzas; Special Issue title: Green activated carbons; Journal: Materials; Publisher: MDPI.
G02. Editors: K.A. Matis, G.Z. Kyzas; Special Issue title: Advances in bioseparation engineering; Journal: Processes; Publisher: MDPI.
G01. Editors: G.Z. Kyzas, S. Azizian, M. Kostoglou; Special Issue title: Novel approaches in designing natural/synthetic materials for environmental applications; Journal: Advances in Materials Science and Engineering; Publisher: Hindawi.