dc.creator | Barba Brioso, Cinta | es |
dc.creator | Martín García, Domingo | es |
dc.creator | Romero Baena, Antonio | es |
dc.creator | Campos Díaz de Mayorga, Paloma | es |
dc.creator | Delgado Rodríguez, Joaquín María | es |
dc.date.accessioned | 2024-03-11T11:58:17Z | |
dc.date.available | 2024-03-11T11:58:17Z | |
dc.date.issued | 2023-07-31 | |
dc.identifier.citation | Barba Brioso, C., Martín García, D., Romero Baena, A., Campos Díaz de Mayorga, P. y Delgado Rodríguez, J.M. (2023). Revalorisation of Fine Recycled Concrete in Acid Mine Water Treatment: A Challenge to a Circular Economy. Minerals, 13 (8), 1028. https://doi.org/10.3390/min13081028. | |
dc.identifier.issn | 2075-163X | es |
dc.identifier.uri | https://hdl.handle.net/11441/156080 | |
dc.description.abstract | Currently, only 50% of concrete produced from construction and demolition waste is being
recycled in Europe. This falls short of the European Union’s target of 70% by 2020. Moreover, this
figure only considers coarse fractions (>4 mm), as technical issues arise when using fine fractions. In
pursuit of a complete circular life for recycled concrete, this investigation explores the potential use
of fine fractions to enhance the physicochemical conditions and reduce the element concentration
of acid mine drainage. Two trickling sets were prepared using a filter holder, with acidic waters
passing through a layer of recycled concrete aggregates. Results revealed an immediate increase in
water pH to neutral levels, a reduction in solution oxidation, and the complete, or near-complete
retention, of potentially toxic elements by the substrate (with retention percentages of over 99.9% for
Al and Fe, between 43.1% and 61.1% for S, over 91.1% for Zn, and over 99.1% for Cu). The experiment
also showed a significant increase in Ca levels (tripling the initial value) and some Mg in the water,
which could promote the subsequent precipitation of carbonates and the retention of trace metals.
In summary, this study demonstrates the effectiveness of using recycled concrete aggregates in a
laboratory setting. Further investigation is necessary to evaluate the feasibility of implementing this
technique at the pilot scale | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | MDPI | es |
dc.relation.ispartof | Minerals, 13 (8), 1028. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | construction and demolition wastes | es |
dc.subject | C&DW | es |
dc.subject | recycled concrete aggregate | es |
dc.subject | acid mine drainage | es |
dc.subject | AMD | es |
dc.subject | passive treatment | es |
dc.subject | trace elements | es |
dc.subject | alkalinisation | es |
dc.subject | circular economy | es |
dc.title | Revalorisation of Fine Recycled Concrete in Acid Mine Water Treatment: A Challenge to a Circular Economy | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Cristalografía, Mineralogía y Química Agrícola | es |
dc.relation.publisherversion | https://doi.org/10.3390/min13081028 | es |
dc.identifier.doi | 10.3390/min13081028 | es |
dc.journaltitle | Minerals | es |
dc.publication.volumen | 13 | es |
dc.publication.issue | 8 | es |
dc.publication.initialPage | 1028 | es |