Abstract
The number of substances listed in the Stockholm Convention on Persistent Organic Pollutants (POPs) has increased constantly since the Convention was enacted in 2004. Under the Convention, POPs are classified into three categories: Annex A (Elimination), Annex B (Restriction), and Annex C (Unintentional production). This article focuses on some of the new/candidate POPs of the Convention, including polychlorinated naphthalenes (PCNs), hexachlorobutadiene (HCBD), hexabromocyclododecane (HBCDD), and per- and polyfluoroalkyl substances (PFAS). The paper also outlines what types of waste contain these substances, actual waste treatment conditions, and a few of the basic concepts related to waste management in the circulation and disposal processes.