Waste (By-products) At-a-Glance
Waste by-products are chemicals produced and released unintentionally into the environment by combustion or some chemical processes. Dioxins, a class of POPs, are by-products of waste incineration, chemical and pesticide manufacturing, and pulp and paper bleaching. The most potent dioxin, 2,3,7,8-TCDD, is a known human carcinogen.