Atenuación de la oxidación del lodo pirítico de la balsa de lodos de Cueva de la Mora (Almonaster, Huelva): ensayos de laboratorio

• Autores: Carlos Ayora Ibáñez, José Miguel Nieto Liñán, Rafael Pérez López, J. Cama
• Localización: Geogaceta, ISSN 0213-683X, Nº. 37, 2004, págs. 239-242
• Idioma: español
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• Resumen

  • The addition of alkaline substances is a technique commonly used to prevent acid production generated by the weathering of sulphide-rich sludge. In this work, we show the effectiveness of fly ash, a waste of coal combustion, as an acid neutralizing residue, by means of the construction of a leaching saturated column fills with sulphide sludge and fly ash. In addition, in order to understand the behaviour of both wastes inside the column, a fly ash leaching test (leachates reach a pH>10) and two flow-through experiments at pH 9 were carried out to calculate oxidative dissolution rates of pyritic sludge in presence of the fly ash.