Natural and assisted dissipation of polycyclic aromatic hydrocarbons in a long-term co-contaminated soil with creosote and potentially toxic elements
العنوان: | Natural and assisted dissipation of polycyclic aromatic hydrocarbons in a long-term co-contaminated soil with creosote and potentially toxic elements |
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المؤلفون: | Esmeralda Morillo, Jaime Villaverde, F. Madrid, Aránzazu Peña, M. Rubio-Bellido |
المساهمون: | Ministerio de Economía y Competitividad (España), European Commission, Madrid Díaz, Fernando, Villaverde Capellán, J., Morillo González, Esmeralda, Madrid Díaz, Fernando [0000-0002-2921-3515], Villaverde Capellán, J. [0000-0002-8694-7929], Morillo González, Esmeralda [0000-0002-4485-2315] |
المصدر: | Digital.CSIC. Repositorio Institucional del CSIC instname |
بيانات النشر: | Elsevier BV, 2019. |
سنة النشر: | 2019 |
مصطلحات موضوعية: | Environmental Engineering, 010504 meteorology & atmospheric sciences, Soil remediation, Microbial Consortia, 010501 environmental sciences, 01 natural sciences, law.invention, Soil, chemistry.chemical_compound, Bioremediation, law, polycyclic compounds, Cyclodextrin, Soil Pollutants, Environmental Chemistry, Polycyclic Aromatic Hydrocarbons, Waste Management and Disposal, Creosote, Soil Microbiology, 0105 earth and related environmental sciences, Fluoranthene, Fluorenes, Pyrenes, Bacteria, Chemistry, Phenanthrenes, Biodegradation, Phenanthrene, Pollution, Soil contamination, 2-Hydroxypropyl-beta-cyclodextrin, Bioavailability, Biodegradation, Environmental, Bioavailability enhancer agents, Rhamnolipid, Environmental chemistry, Pyrene, Glycolipids |
الوصف: | 10 páginas.-- 3 figuras.-- 6 tablas.-- 71 referencias.-- Supplementary data to this article can be found online at https://doi.org/10.1016/j.scitotenv.2018.12.376 An enhanced bioremediation strategy was applied to an industrial soil co-contaminated with Polycyclic Aromatic Hydrocarbons (PAHs) and Potentially Toxic Elements (PTEs). Hydroxypropyl-β-cyclodextrin (HPBCD) and a natural mixture of two rhamnolipids (RL) were added to increase PAHs bioavailability, and combined with a microbial consortium (MC) to biodegrade soil PAHs. Bioavailability of only six PAHs (3-, 4-ring PAHs) increased when using HPBCD, with a maximum increase about 2.8-fold higher. The highest dose of HPBCD (5%) enhanced PAH degradation, with the best results for 4-ring PAHs with treatments of HPBCD + MC (up to 48% degradation for pyrene and 43% for fluoranthene), whereas dissipation for 5-ring PAHs was very low and for 6-ring was negligible. The use of RL increased the bioavailability of 13 of the 16 PAHs studied, reaching up to 60-fold higher values for phenanthrene or 18-fold higher for acenaphtene. RL addition did not show degradation improvement in any situation, and even inhibited the scarce degradation observed in the control treatment. The high increase in availability of both PAHs and mainly PTEs when using RL as amendment could make them toxic for microorganisms. In fact, Microtox Acute Toxicity test using Aliivibrio fischeri and the absence of colony forming units (CFUs) of indigenous bacteria demonstrated the extremely high levels of toxicity in RL treated soil. This work was supported by the Spanish Ministry of Economy and Competitiveness (co-funded by the Fondo Europeo de Desarrollo Regional, FEDER), under the research project CTM2013-42599-R. |
تدمد: | 0048-9697 |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b03dd2259ae1b6b390367cc4b48321d4 https://doi.org/10.1016/j.scitotenv.2018.12.376 |
حقوق: | OPEN |
رقم الأكسشن: | edsair.doi.dedup.....b03dd2259ae1b6b390367cc4b48321d4 |
قاعدة البيانات: | OpenAIRE |
تدمد: | 00489697 |
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