Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation

Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation

7 páginas.-- 4 figuras.-- 6 tablas.-- 18 referencias.-- Supplementary data to this article can be found online at https://doi. org/10.1016/j.scitotenv.2019.03.056

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Bibliographic Details
Main Authors: Posada Baquero, Rosa, Grifoll, Magdalena, Ortega Calvo, J. J.
Other Authors: Ministerio de Economía y Competitividad (España)
Format: artículo biblioteca
Language:English
Published: Elsevier 2019-06-10
Subjects:Biodegradation, Bioremediation, Biosurfactants, Polycyclic aromatic hydrocarbons,
Online Access:http://hdl.handle.net/10261/178096
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100011011
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spelling dig-irnas-es-10261-1780962021-06-10T04:30:36Z Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation Posada Baquero, Rosa Grifoll, Magdalena Ortega Calvo, J. J. Ministerio de Economía y Competitividad (España) Junta de Andalucía European Commission Posada Baquero, Rosa [0000-0003-2726-7357] Ortega Calvo, J. J. [0000-0003-1672-5199] Biodegradation Bioremediation Biosurfactants Polycyclic aromatic hydrocarbons 7 páginas.-- 4 figuras.-- 6 tablas.-- 18 referencias.-- Supplementary data to this article can be found online at https://doi. org/10.1016/j.scitotenv.2019.03.056 The application of a rhamnolipid biosurfactant for enhanced solubilization and biodegradation of slowly desorbing polycyclic aromatic hydrocarbons (PAHs) in contaminated soils was determined in this study. The soil samples exhibited different levels of pollution and different bioremediation stages: the first soil originated from a creosote-polluted site, contained 4370 mg kg −1 of PAHs and had not been bioremediated; the second soil was the same as the first but had received bioremediation treatment with nutrient amendment in biopiles for a period of 5 months and contained 580 mg kg −1 of PAHs after this treatment; the third soil was treated by bioremediation for several years to reduce the concentration of PAHs to 275 mg kg −1 . The kinetics of PAH desorption were determined to assess the magnitude of the slowly desorbing fractions present in the polluted soil and to optimize the biosurfactant effectiveness in terms of biodegradation. The soils that had been treated by bioremediation were enriched in slowly desorbing PAHs. The rhamnolipid at a concentration above its critical micelle concentration enhanced biodegradation in the soils that had been bioremediated previously. The measurement of residual concentrations of native PAHs showed the promoting effect of the biosurfactant on the biodegradation of the slowly desorbing fractions. Interestingly, benzo(a)pyrene was biodegraded in the soil that had been bioremediated for a long time. Rhamnolipid can constitute a valid alternative to chemical surfactants in promoting the biodegradation of slow-desorption PAHs, which is one of the most important problems in bioremediation, but the efficiency depends strongly on the bioremediation stage in which the biosurfactant is applied We thank the Spanish Ministry of Economy, Industry and Competitiveness (CGL2016-77497-R), the Andalusian Government (RNM 2337) and the European Commission (LIFE15 ENV/IT/000396) for supporting this work. Peer reviewed 2021-06-10 2019-03-18T13:22:49Z 2019-03-18T13:22:49Z 2019-06-10 artículo http://purl.org/coar/resource_type/c_6501 Science of the Total Environment (668) 790-796 (2019) 0048-9697 http://hdl.handle.net/10261/178096 10.1016 / j.scitotenv.2019.03.056 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100011011 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-77497-R Postprint http://dx.doi.org/10.1016/j.scitotenv.2019.03.056 Sí open Elsevier
institution IRNAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-irnas-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IRNAS España
language English
topic Biodegradation
Bioremediation
Biosurfactants
Polycyclic aromatic hydrocarbons
Biodegradation
Bioremediation
Biosurfactants
Polycyclic aromatic hydrocarbons
spellingShingle Biodegradation
Bioremediation
Biosurfactants
Polycyclic aromatic hydrocarbons
Biodegradation
Bioremediation
Biosurfactants
Polycyclic aromatic hydrocarbons
Posada Baquero, Rosa
Grifoll, Magdalena
Ortega Calvo, J. J.
Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation
description 7 páginas.-- 4 figuras.-- 6 tablas.-- 18 referencias.-- Supplementary data to this article can be found online at https://doi. org/10.1016/j.scitotenv.2019.03.056
author2 Ministerio de Economía y Competitividad (España)
author_facet Ministerio de Economía y Competitividad (España)
Posada Baquero, Rosa
Grifoll, Magdalena
Ortega Calvo, J. J.
format artículo
topic_facet Biodegradation
Bioremediation
Biosurfactants
Polycyclic aromatic hydrocarbons
author Posada Baquero, Rosa
Grifoll, Magdalena
Ortega Calvo, J. J.
author_sort Posada Baquero, Rosa
title Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation
title_short Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation
title_full Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation
title_fullStr Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation
title_full_unstemmed Rhamnolipid-enhanced solubilization and biodegradation of PAHs in soils after conventional bioremediation
title_sort rhamnolipid-enhanced solubilization and biodegradation of pahs in soils after conventional bioremediation
publisher Elsevier
publishDate 2019-06-10
url http://hdl.handle.net/10261/178096
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100011011
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AT grifollmagdalena rhamnolipidenhancedsolubilizationandbiodegradationofpahsinsoilsafterconventionalbioremediation
AT ortegacalvojj rhamnolipidenhancedsolubilizationandbiodegradationofpahsinsoilsafterconventionalbioremediation
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