Concentración total y biodisponibilidad de plomo en lodos residuales provenientes de una ptar urbano-municipal del estado de Guanajuato.

• Autores: María González, José Segoviano, José García
• Localización: Ciencias Naturales y Exactas Handbook T-II: Congreso Interdisciplinario de Cuerpos Académicos / coord. por Vicente Pérez García, José Luis Mínguela Ramírez, José Luis Rodríguez Muñoz, 2014, ISBN 978-607-8324-18-7, págs. 73-80
• Idioma: español
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• Resumen

  • In this paper a study of the total concentration and bioavailability of lead in urban municipal sewage sludge is shown. The sludge samples analyzed were collected from a wastewater treatment plant (WWTP) in the state of Guanajuato. In order to determine the total concentration and bioavailability of heavy metals in the sludge samples, analytical methods of the atomic absorption spectroscopy and BCR (European Community Reference) sequential extraction were used respectively. Based on the total concentration of heavy metals was found that the sludge samples did not meet with the maximum permissible limits of the lead containing according to the provisions of Official Standard NOM-004-SEMARNAT-2002 exceeded these limits by approximately 32-35 % , classified as hazardous waste. According to the results of the BCR sequential extraction, the lead distribution was set as 24 % for reducible and interchangeable fraction which are more available and easier to remove. While the oxidizable fraction occupies 30% and the residual fraction 45% being the most stable and bit available.