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Título: | Remediation of metal-contaminated soils with the addition of materials - Part II: Leaching tests to evaluate the efficiency of materials in the remediation of contaminated soils |
Autor: | González-Nuñez, R.; Alba, María D. CSIC ORCID CVN ; Orta, M. Mar CSIC; Vidal, Miquel; Rigol, Anna | Palabras clave: | Fly ashes Sugar foam Bentonites pHstat leaching test Immobilization Metal-contaminated soils |
Fecha de publicación: | 2012 | Editor: | Pergamon Press | Citación: | Chemosphere 87: 829- 837 (2012) | Resumen: | The effect of the addition of materials on the leaching pattern of As and metals (Cu, Zn, Ni, Pb, and Cd) in two contaminated soils was investigated. The examined materials included bentonites, silicates and industrial wastes, such as sugar foam, fly ashes and a material originated from the zeolitization of fly ash. Soil+material mixtures were prepared at 10% doses. Changes in the acid neutralization capacity, crystalline phases and contaminant leaching over a wide range of pHs were examined by using pH stat leaching tests. Sugar foam, the zeolitic material and MX-80 bentonite produced the greatest decrease in the leaching of pollutants due to an increase in the pH and/or the sorption capacity in the resulting mixture. This finding suggests that soil remediation may be a feasible option for the reuse of non-hazardous wastes. © 2012 Elsevier Ltd. | URI: | http://hdl.handle.net/10261/97158 | DOI: | 10.1016/j.chemosphere.2012.01.015 | Identificadores: | doi: 10.1016/j.chemosphere.2012.01.015 issn: 0045-6535 |
Aparece en las colecciones: | (ICMS) Artículos |
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R Gonzalez et al Chemosphere 2012.pdf | 159,92 kB | Adobe PDF | Visualizar/Abrir |
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