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

1. Ayora Ibáñez, Carlos
2. Nieto Liñán, José Miguel
3. Pérez López, Rafael
4. Cama, J.

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Andere Publikationen in: Geogaceta

Zusammenfassung

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.

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