Biodegradación de compuestos orgánicos persistentes (COP): I. el caso de los bifenilos policlorados (PCB)

Persistent organic pollutants are chemicals that are toxic to humans and wildlife, remain intact in the environment for long periods, accumulate in living organisms and can become widely distributed geographically by air, water or migrating species. As a result, these contaminants have been found all over the world including in places, such as the Polar Regions, which are very far from their application site. The Stockholm Convention was signed in 23/5/01 in order to cope with this international environmental problem. Although POPs were banned by most countries, there are still a lot of sites contaminated with these substances. The remediation of these sites is problematic and requires distinct considerations from those which are established for hydrocarbon remediation. This manuscript reviews the literature about anaerobic and aerobic biodegradation of polychlorinated biphenyls (PCB) and possible strategies to stimulate these processes. The degradation of the other POPs would be reviewed in additional texts.