Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/172276
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Extraction of PAHS from an aged creosote-polluted soil by cyclodextrins and rhamnolipids. Side effects on removal and availability of potentially toxic elements |
Autor: | Madrid Díaz, Fernando CSIC ORCID; Ballesteros, Rubén CSIC; Lacorte Bruguera, Silvia CSIC ORCID; Villaverde Capellán, J. CSIC ORCID ; Morillo González, Esmeralda CSIC ORCID | Palabras clave: | Cyclodextrin PAHs Rhamnolipid Soil washing Toxic elements Aluminum Binary alloys Polycyclic aromatic hydrocarbons |
Fecha de publicación: | 25-feb-2019 | Editor: | Elsevier | Citación: | Science of the Total Environment 653: 384-39 (2019) | Resumen: | This study evaluated the effect of several cyclodextrins (CDs) and a rhamnolipid (RL) on the removal of polycyclic aromatic hydrocarbons (PAHs) from a co-contaminated soil which had received historically creosote and inorganic wood preservatives for almost 100 years, and the effect of such extractions on the potentially toxic elements (PTEs). The influence on such processes of an electrolyte (0.01 M Ca(NO3)2) was also studied. Up to 15.4% of the ∑16 PAHs were extracted using RL in the absence of the electrolyte as washing solution, but decreases until reaching 0.60% in the presence of Ca2+ due to RL precipitation and partial inactivation. Only up to 2% of the ∑16 PAHs was extracted with CDs (4-ring PAHs in higher concentrations), but the electrolyte had no effect on extraction. In relation to PTEs, CDs proved to be inefficient for their extraction, and even RL in the presence of the background electrolyte. But in the absence of electrolyte PTEs extraction by RL increased. Apart from that, the availability of Ni, Cr, and As, those more associated to Fe and Al soil surfaces, increased after extraction with RLs in the presence of Ca2+ (about 100% for Cr and Ni and 200% for As). Under these conditions Fe and Al availability increased two- and ten-fold, respectively, indicating that Fe-Al soil surfaces were altered. Therefore, the ionic strength and the cations present in the soil solution of soils have to be considered when RLs are used as extractants for remediation purposes | Descripción: | 9 páginas.-- 3 figuras.-- 6 tablas.-- 75 referencias.-- Supplementary data to this article can be found online at https://doi.org/10.1016/j.scitotenv.2018.10.316. | Versión del editor: | http://dx.doi.org/10.1016/j.scitotenv.2018.10.316 | URI: | http://hdl.handle.net/10261/172276 | DOI: | 10.1016/j.scitotenv.2018.10.316 | ISSN: | 0048-9697 |
Aparece en las colecciones: | (IDAEA) Artículos (IRNAS) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
EXTRACTION_PAHS_AGED_CREOSOTE_POLLUTED_2018_Postprint.pdf | 1,18 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
20
checked on 16-abr-2024
WEB OF SCIENCETM
Citations
20
checked on 26-feb-2024
Page view(s)
417
checked on 18-abr-2024
Download(s)
308
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons