Artículo
Potential for water and metal recovery from acid mine drainage by combining hybrid membrane processes with selective metal precipitation
Autor/es | León Venegas, Elena
Vilches Arenas, Luis Francisco Fernández Baco, Custodia Arroyo Torralvo, Fátima |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Química y Ambiental |
Fecha de publicación | 2023-01 |
Fecha de depósito | 2022-11-21 |
Publicado en |
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Resumen | Acid mining drainage has a serious impact on the environment. Forward osmosis allows the concentration of acid mine waters to favor the formation of enrichment sludges and subsequent selective metal precipitation. In this ... Acid mining drainage has a serious impact on the environment. Forward osmosis allows the concentration of acid mine waters to favor the formation of enrichment sludges and subsequent selective metal precipitation. In this work, a methodology was proposed to treat mining effluents from the Iberian Pyrite Belt. Forward osmosis experiments were performed using different osmotic pressures from 0.5M to 2.5M NaCl to evaluate water fluxes and recovery. The water recovery obtained was in the range of 50-80%, and the flux remained above 5 (L•m−2•h−1). Four combined processes were modelled to determine the feasibility of eliminating water and precipitating metals. Furthermore, a new hybrid membrane process was proposed to recover at least 75% of water with recovery yields of Al, Fe, Cu, Zn and Mn of greater than 70%. A water production cost of 2.01 $/m3 and a specific energy consumption of 8.03 kWhe/m3 were estimated for the hybrid process. |
Agencias financiadoras | Junta de Andalucía P18-RT-1666 |
Identificador del proyecto | P18-RT-1666 |
Cita | León-Venegas, E., Vilches-Arenas, L.F., Fernández-Baco, C. y Arroyo-Torralvo, F. (2023). Potential for water and metal recovery from acid mine drainage by combining hybrid membrane processes with selective metal precipitation. Resources, Conservation and Recycling, 188 (January), 106629. https://doi.org/10.1016/j.resconrec.2022.106629. |
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