Degradation of di-, tri-, tetra-, and pentachlorophenol mixtures in an aerobic biofilter
Por:
Torres L.G., Hernández M., Pica Y., Albiter V., Bandala E.R.
Publicada:
7 jun 2010
Resumen:
Chlorophenols are highly toxic xenobiotic compounds, normally found in the effluents of many industries. Due to the high toxicity of these compounds, it is difficult to treat effluent streams containing high concentrations of chlorophenols. The aim of this work is to demonstrate the capabilities of an aerobic submerged filter previously characterized in the degradation of phenol and chlorophenols in the treatment of highly toxic di-, tri-, tetra-and penta-chlorophenols mixtures (200 - 800 mgL(-1) as total phenols concentration). It is shown that the system is capable of treating up to 600 mgL(-1) of total chlorophenols with excellent reduction values, and biodegradation rates (BDRs) between 87-97%, and 34-157 mgL(-1) day(-1), respectively (total organic carbon, TOC degradations up to 80%). In the case of the 800 mgL(-1), a strong inhibition due to the high toxicity of the mixture was observed. The system reduced the influent toxicity (EC50 or toxic units) by 48-76%, even when the initi
Filiaciones:
Torres L.G.:
Unidad Profesional Interdisciplinaria en Biotecnologia, Instituto Politecnico Nacional, Av. Acueducto s.n. Colonia Barrio la Laguna Ticoman, Mexico 07340 D.F, Mexico
Hernández M.:
Instituto Mexicano de Tecnología del Agua, Paseo Cuahunahuac 8532, Jiutepec, Morelos, Mexico
Pica Y.:
Instituto Mexicano de Tecnología del Agua, Paseo Cuahunahuac 8532, Jiutepec, Morelos, Mexico
Albiter V.:
Univ Nacl Autonoma Mexico, Intituto Biotecnol, Cuernavaca 62271, Morelos, Mexico
Bandala E.R.:
Departamento de Ingeniería Civil y Ambiental, Universidad de Las Americas-Puebla. Sta. Catarina Martir, Cholula 72820 Puebla, Mexico
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