%0 Journal Article
%T BIODEGRADACI車N DE COMPUESTOS ORG芍NICOSPERSISTENTES (COP): I. EL CASO DE LOS BIFENILOSPOLICLORADOS (PCB)
%A ARBELI ZIV
%J Acta Biol車gica Colombiana
%D 2009
%I Universidad Nacional de Colombia
%X RESUMEN Los contaminantes org芍nicos persistentes poseen propiedades t車xicas, son resistentes a la degradaci車n, se bioacumulan y son transportados por el aire, el agua y las especies migratorias a trav谷s de las fronteras internacionales; en consecuencia se depositan lejos del lugar de su liberaci車n, acumul芍ndose en ecosistemas terrestres y acu芍ticos. Para atender a esta problem芍tica a nivel mundial se firm車 el 23 de mayo de 2001 el Convenio de Estocolmo. Aunque por ahora los COP estan prohibidos en la mayoria de los pa赤ses, todav赤a existen en el mundo muchos sitios contaminados con estas sustancias. La remediaci車n de sitios que presentan contaminantes org芍nicos persistentes requiere consideraciones distintas a las contempladas en la recupe-raci車n por contaminaci車n de hidrocarburos. El siguiente texto revisa la literatura sobre la biodegradaci車n anaer車bica y aer車bica de los bifeniles policlorados (PCB) y las posibles estrategias para estimular dicha biodegradaci車n. La degradaci車n de los dem芍s COP ser芍 descritas en textos adicionales. Palabras clave: contaminantes org芍nicos persistentes (COP); bifeniles policlorados (PCB); biodegradaci車n; biorremediaci車n. ABSTRACT 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. Key words: Persistent organic pollutants (POPs); Polychlorinated biphenyls (PCB); Biodegradation; Bioremediation.
%U http://revistas.unal.edu.co/index.php/actabiol/article/view/9769