Abstract

VISITACION FIGUEROA, Lizardo; ROJAS, Freddy J; MEZA CONTRERAS, Víctor  and  FLORES DEL PINO, Lisveth. Polycyclic aromatic hydrocarbon degradation from waste street sweep by compost. Rev. Soc. Quím. Perú [online]. 2016, vol.82, n.2, pp.162-174. ISSN 1810-634X.

In this study the degradation of polycyclic aromatic hydrocarbons (PAHs) present in waste street sweeping by aerobic treatment was assessed using four different samples of compost quality. It was possible to reduce the concentration in the samples ∑HAPs reaching removal rates of greater than 80% within 120 days of aerobic treatment, samples of compost with anaerobic pretreatment promote further degradation of PAHs reaching higher removals than 90%, this may influenced by the presence of microorganisms capable of degrading organic matter and humic substances produce. The toxic effect evaluated as BaPeq is reduced by over 66% in the first30 days oftreatment for wasteshows similar percentages sweep streets can be achieved in more than 90 days of treatment. The ecotoxicological effects assessed on Daphnia magna and Lactuca sativa, indicate that PAH metabolites being produced cometabolizados more ecotoxicological effect mainly between 30 and 60 days, reducing its effect over 90 days of treatment.

Keywords : PAHs; compost; humic acids residues streets.

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