How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles?
Predicting the fate of engineered nanoparticles (ENPs) once they are released in the environment is essential to evaluate their impacts to ecosystems. Microbial biofilms, as highly reactive compartments in soils and sediments, have the potential to impose strong controls on ENPs life cycle in natura...
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Format: | Article |
Language: | English |
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Frontiers Media S.A.
2020-07-01
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Series: | Frontiers in Environmental Science |
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Online Access: | https://www.frontiersin.org/article/10.3389/fenvs.2020.00082/full |
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doaj-893bcd59da9f470dbd5b98b9e70a7b79 |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Morgane Desmau Andrea Carboni Maureen Le Bars Emmanuel Doelsch Emmanuel Doelsch Marc F. Benedetti Mélanie Auffan Clément Levard Alexandre Gelabert |
spellingShingle |
Morgane Desmau Andrea Carboni Maureen Le Bars Emmanuel Doelsch Emmanuel Doelsch Marc F. Benedetti Mélanie Auffan Clément Levard Alexandre Gelabert How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles? Frontiers in Environmental Science biofilm engineered nanoparticles mesocosm microenvironment ZnS passivation |
author_facet |
Morgane Desmau Andrea Carboni Maureen Le Bars Emmanuel Doelsch Emmanuel Doelsch Marc F. Benedetti Mélanie Auffan Clément Levard Alexandre Gelabert |
author_sort |
Morgane Desmau |
title |
How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles? |
title_short |
How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles? |
title_full |
How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles? |
title_fullStr |
How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles? |
title_full_unstemmed |
How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles? |
title_sort |
how microbial biofilms control the environmental fate of engineered nanoparticles? |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Environmental Science |
issn |
2296-665X |
publishDate |
2020-07-01 |
description |
Predicting the fate of engineered nanoparticles (ENPs) once they are released in the environment is essential to evaluate their impacts to ecosystems. Microbial biofilms, as highly reactive compartments in soils and sediments, have the potential to impose strong controls on ENPs life cycle in natural settings. However, information regarding impacts of biofilms toward ENPs environmental fate are not easily accessible, and such evidences are collected and discussed in this review, in order to identify common trends and to better constrain the role played by these microbial structures. Biofilms are reported to exhibit important ENPs accumulation capacities, and short to long-term ENPs immobilization can thus be expected. Mechanisms that govern such accumulation and ENPs migration within biofilms depend strongly on electrostatic and hydrophobic interactions, as well as biofilm structural properties, such as density and permeability. They are a combination of key parameters that include ENPs size and surface properties, mineral substrate reactivity, ability to develop organic corona around ENPs, or formation of aggregates within the biofilm thickness. In addition, these microbial structures exhibit highly reactive microenvironments, and are consequently able to impose major ENPs transformations such as dissolution, through ligand- or redox-mediated pathways, as well as passivation or stabilization processes. Interestingly, exposure to toxic ENPs can even trigger a response from micro-organisms biofilms which has the potential to strongly modify ENPs speciation. Promising approaches to investigate the role of microbial biofilms for ENPs cycling in realistic systems are introduced through the use of mesocosms, medium-size replicated ecosystems that allow to integrate the complexity of natural settings. Finally, biofilm-mediated nanoparticles synthesis in man-impacted systems is presented. This raises important questions regarding biofilms role as secondary sources of nanoparticles. |
topic |
biofilm engineered nanoparticles mesocosm microenvironment ZnS passivation |
url |
https://www.frontiersin.org/article/10.3389/fenvs.2020.00082/full |
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doaj-893bcd59da9f470dbd5b98b9e70a7b792020-11-25T03:22:49ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2020-07-01810.3389/fenvs.2020.00082551081How Microbial Biofilms Control the Environmental Fate of Engineered Nanoparticles?Morgane Desmau0Andrea Carboni1Maureen Le Bars2Emmanuel Doelsch3Emmanuel Doelsch4Marc F. Benedetti5Mélanie Auffan6Clément Levard7Alexandre Gelabert8Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, United StatesAix Marseille Univ, Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Dŕveloppement (IRD), Institut National de Recherche pourl’agriculture, l’alimentation et l’environnement (INRAE), Coll France, Centre Européen de Recherche et d’Enseignement en Géosciences de l’Environnement (CEREGE), Aix-en-Provence, FranceUniversité de Pau et des Pays de l’Adour, E2S Université de Pau et des Pays de l’Adour (UPPA), Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux (IPREM), UMR 5254, Pau, FranceCentre de coopération International en Recherche Agronomique pourle Développement (CIRAD), Unité Propre de Recherche (UPR) Recyclage et Risque, Montpellier, FranceRecyclage et Risque, University of Montpellier, Centre de coopération International en Recherche Agronomique pour le Développement (CIRAD), Montpellier, FranceUniversité de Paris, Institut de Physique du Globe de Paris, UMR 7154, Centre National de la Recherche Scientifique (CNRS), Paris, FranceAix Marseille Univ, Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Dŕveloppement (IRD), Institut National de Recherche pourl’agriculture, l’alimentation et l’environnement (INRAE), Coll France, Centre Européen de Recherche et d’Enseignement en Géosciences de l’Environnement (CEREGE), Aix-en-Provence, FranceAix Marseille Univ, Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Dŕveloppement (IRD), Institut National de Recherche pourl’agriculture, l’alimentation et l’environnement (INRAE), Coll France, Centre Européen de Recherche et d’Enseignement en Géosciences de l’Environnement (CEREGE), Aix-en-Provence, FranceUniversité de Paris, Institut de Physique du Globe de Paris, UMR 7154, Centre National de la Recherche Scientifique (CNRS), Paris, FrancePredicting the fate of engineered nanoparticles (ENPs) once they are released in the environment is essential to evaluate their impacts to ecosystems. Microbial biofilms, as highly reactive compartments in soils and sediments, have the potential to impose strong controls on ENPs life cycle in natural settings. However, information regarding impacts of biofilms toward ENPs environmental fate are not easily accessible, and such evidences are collected and discussed in this review, in order to identify common trends and to better constrain the role played by these microbial structures. Biofilms are reported to exhibit important ENPs accumulation capacities, and short to long-term ENPs immobilization can thus be expected. Mechanisms that govern such accumulation and ENPs migration within biofilms depend strongly on electrostatic and hydrophobic interactions, as well as biofilm structural properties, such as density and permeability. They are a combination of key parameters that include ENPs size and surface properties, mineral substrate reactivity, ability to develop organic corona around ENPs, or formation of aggregates within the biofilm thickness. In addition, these microbial structures exhibit highly reactive microenvironments, and are consequently able to impose major ENPs transformations such as dissolution, through ligand- or redox-mediated pathways, as well as passivation or stabilization processes. Interestingly, exposure to toxic ENPs can even trigger a response from micro-organisms biofilms which has the potential to strongly modify ENPs speciation. Promising approaches to investigate the role of microbial biofilms for ENPs cycling in realistic systems are introduced through the use of mesocosms, medium-size replicated ecosystems that allow to integrate the complexity of natural settings. Finally, biofilm-mediated nanoparticles synthesis in man-impacted systems is presented. This raises important questions regarding biofilms role as secondary sources of nanoparticles.https://www.frontiersin.org/article/10.3389/fenvs.2020.00082/fullbiofilmengineered nanoparticlesmesocosmmicroenvironmentZnSpassivation |