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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Martinez Huerta, Gemma Álvarez Cabal, Valeriano Vigil, Miguel Marey-Pérez, Manuel F. |
| Spatial Coverage | Spain |
| Description | Author Affiliation: Vigil M ( Área de Proyectos de Ingeniería, Departamento de Explotación y Prospección de Minas, Universidad de Oviedo, Calle Independencia 13, 33004 Oviedo, Spain. Electronic address: miguel.vigil@api.uniovi.es.); Marey-Pérez MF ( Universidad de Santiago de Compostela, Escuela Politécnica Superior, R/Benigno Ledo, Campus Universitario, 27002 Lugo, Spain.); Martinez Huerta G ( Área de Proyectos de Ingeniería, Departamento de Explotación y Prospección de Minas, Universidad de Oviedo, Calle Independencia 13, 33004 Oviedo, Spain.); Álvarez Cabal V ( Área de Proyectos de Ingeniería, Departamento de Explotación y Prospección de Minas, Universidad de Oviedo, Calle Independencia 13, 33004 Oviedo, Spain.) |
| Abstract | This study examines the sustainability of phytoremediation for soils contaminated with heavy metals, especially the influence of management of the produced metal-enriched biomass on the environmental performance of the complete system. We examine a case study in Asturias (north of Spain), where the land was polluted with Pb by diffuse emissions from an adjacent steelmaking factory. A Phytoremediation scenario based on this case was assessed by performing a comparative life cycle assessment and by applying the multi-impact assessment method ReCiPe. Our Baseline scenario used the produced biomass as feedstock for an anaerobic digester that produces biogas, which is later upgraded cryogenically. The Baseline scenario was compared with two alternative scenarios: one considers depositing the produced biomass into landfill, and the other considers excavating the contaminated soil, disposing it in a landfill, and refilling the site with pristine soil. A sensitivity analysis was performed using different yields of biomass and biogas, and using different distances between site and biomass valorization/disposal center. Our results show that the impacts caused during agricultural activities and biomass valorization were compensated by the production of synthetic natural gas and the avoided impact of natural gas production. In addition, it was found that if the produced biomass was not valorized, the sustainability of phytoremediation is questionable. The distance between the site and the biomass processing center is not a major factor for determining the technology's sustainability, providing distances are less than 200-300 km. However, distance to landfill or to the source of pristine soil is a key factor when deciding to use phytoremediation or other ex-situ conventional remediation techniques. |
| ISSN | 00489697 |
| Volume Number | 505 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-02-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Waste Management Methods Agriculture Biodegradation, Environmental Biofuels Biomass Environment Environmental Pollution Metals, Heavy Soil Spain Evaluation Studies Journal Article Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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