Removal of Transition Metals from Contaminated Aquifers by PRB Technology: Performance Comparison among Reactive Materials
| Autor: | Carlos Ayora, Adalgisa Tavolaro, José Luis Cortina, A. Molinari, Oriol Gibert, María Fernanda Rivera-Velasquez, Celia Margarita Mayacela-Rojas, Carmine Fallico |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Iron
Health Toxicology and Mutagenesis 0211 other engineering and technologies zeolites 02 engineering and technology 010501 environmental sciences Aquifers remediation column tests 01 natural sciences Mordenite Article transition metals Enginyeria química [Àrees temàtiques de la UPC] Permeable reactive barriers Vegetable fibers permeable reactive barriers Fiber Zeolite Groundwater 0105 earth and related environmental sciences 021110 strategic defence & security studies Zerovalent iron Clinoptilolite aquifers remediation Chemistry Public Health Environmental and Occupational Health Transition metals Contamination Metalls de transició Bach tests Aqüífers -- Contaminació Chemical engineering Permeable reactive barrier Zeolites Column tests Medicine vegetable fibers Water Pollutants Chemical bach tests Reactive material |
| Zdroj: | International Journal of Environmental Research and Public Health Volume 18 Issue 11 International Journal of Environmental Research and Public Health, Vol 18, Iss 6075, p 6075 (2021) UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Digital.CSIC. Repositorio Institucional del CSIC instname Digital.CSIC: Repositorio Institucional del CSIC Consejo Superior de Investigaciones Científicas (CSIC) |
| ISSN: | 1660-4601 1661-7827 |
| Popis: | The most common reactive material used for the construction of a permeable reactive barrier (PRB) is zero valent iron (ZVI), however, its processing can generate corrosive effects that reduce the efficiency of the barrier. The present study makes a major contribution to understanding new reactive materials as natural and synthetic, easy to obtain, economical and environmentally friendly as possible substitutes for the traditional ZHV to be used as filters in the removal of three transition metals (Zn, Cu, Cd). To assess the ability to remove these pollutants, a series of batch and column tests were carried out at laboratory scale with these materials. Through BACH tests, four of seven substances with a removal percentage higher than 99% were prioritized (cabuya, natural clinoptilolite zeolites, sodium mordenite and mordenite). From this group of substances, column tests were performed where it is evidenced that cabuya fiber presents the lowest absorption time (≈189 h) while natural zeolite mordenite shows the highest time (≈833 h). The latter being the best option for the PRB design. The experimental values were also reproduced by the RETRASO code; through this program, the trend between the observed and simulated values with respect to the best reactive substance was corroborated. Special acknowledgment to Carmine Fallico and Adalgisa Tavolaro for coordinating the technical activities between the Escuela Superior de Chimborazo (ESPOCH), the Universidad Técnica de Ambato (UTA), the Universidad de Calabria (UNICAL), the Consiglio Nazionale di Ricerca (CNR-ITM) and the Universidad Técnica de Cataluña. |
| Databáze: | OpenAIRE |
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