Application of biosurfactants and periodic voltage gradient for enhanced electrokinetic remediation of metals and PAHs in dredged marine sediments.
Identifieur interne : 000197 ( Main/Exploration ); précédent : 000196; suivant : 000198Application of biosurfactants and periodic voltage gradient for enhanced electrokinetic remediation of metals and PAHs in dredged marine sediments.
Auteurs : M T Ammami [France] ; F. Portet-Koltalo [France] ; A. Benamar [France] ; C. Duclairoir-Poc [France] ; H. Wang [France] ; F. Le Derf [France]Source :
- Chemosphere [ 1879-1298 ] ; 2015.
English descriptors
- KwdEn :
- Chelating Agents (chemistry), Electricity, Environmental Restoration and Remediation (methods), Geologic Sediments (chemistry), Metals, Heavy (chemistry), Polycyclic Hydrocarbons, Aromatic (chemistry), Polysorbates (chemistry), Pseudomonas fluorescens (metabolism), Surface-Active Agents (chemistry), Water Pollutants, Chemical (chemistry).
- MESH :
- chemical , chemistry : Chelating Agents, Metals, Heavy, Polycyclic Hydrocarbons, Aromatic, Polysorbates, Surface-Active Agents, Water Pollutants, Chemical.
- chemistry : Geologic Sediments.
- metabolism : Pseudomonas fluorescens.
- methods : Environmental Restoration and Remediation.
- Electricity.
Abstract
Dredged harbor sediment co-contaminated by heavy metals and polycyclic aromatic hydrocarbons (PAHs) was subjected to enhanced electrokinetic treatments, using a mixture of a chelating agent (citric acid CA) and a surfactant as additives in the processing fluids. We tested various operating conditions (at 1 V cm(-1)): different CA concentrations, applying a periodic voltage gradient, pre-conditioning the sediment with the additives, and replacing the synthetic surfactant Tween 20 (TW20) by biosurfactants. Increasing the CA concentration was favorable for both metal and PAH removal. Applying a periodic voltage gradient associated to a low concentration of CA and TW20 provided the best results for Zn, Cd and Pb removal and also for removal of the 16 priority PAHs. Promising results were obtained with solutions containing rhamnolipids (0.028%) and a viscosin-like biosurfactant produced by Pseudomonas fluorescens Pfa7B (0.025%), associated to a periodic voltage gradient. Although the rhamnolipid and the viscosin-like compounds involved a higher electrical current than TW20, metals were less removed from the sediment. The electroosmotic flow was lower when we used biosurfactants, hence a less effective effect on PAH removal.
DOI: 10.1016/j.chemosphere.2014.12.087
PubMed: 25644703
Affiliations:
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Electronic address: mohamed-tahar.ammami@univ-lehavre.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">le Havre</settlement></placeName><orgName type="university">Université du Havre</orgName></affiliation></author><author><name sortKey="Portet Koltalo, F" sort="Portet Koltalo, F" uniqKey="Portet Koltalo F" first="F" last="Portet-Koltalo">F. Portet-Koltalo</name><affiliation wicri:level="4"><nlm:affiliation>Laboratoire COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France. Electronic address: florence.koltalo@univ-rouen.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Evreux</settlement></placeName><orgName type="university">Université de Rouen</orgName></affiliation></author><author><name sortKey="Benamar, A" sort="Benamar, A" uniqKey="Benamar A" first="A" last="Benamar">A. Benamar</name><affiliation wicri:level="4"><nlm:affiliation>Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre, France. Electronic address: ahmed.benamar@univ-lehavre.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">le Havre</settlement></placeName><orgName type="university">Université du Havre</orgName></affiliation></author><author><name sortKey="Duclairoir Poc, C" sort="Duclairoir Poc, C" uniqKey="Duclairoir Poc C" first="C" last="Duclairoir-Poc">C. Duclairoir-Poc</name><affiliation wicri:level="4"><nlm:affiliation>Laboratoire de microbiologie - signaux et micro-environnement, EA 4312, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France. Electronic address: cecile.poc@univ-rouen.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de microbiologie - signaux et micro-environnement, EA 4312, Université de Rouen, 55 rue Saint Germain, 27000 Evreux</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Evreux</settlement></placeName><orgName type="university">Université de Rouen</orgName></affiliation></author><author><name sortKey="Wang, H" sort="Wang, H" uniqKey="Wang H" first="H" last="Wang">H. Wang</name><affiliation wicri:level="4"><nlm:affiliation>Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre, France. Electronic address: huaquing.wang@univ-lehavre.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">le Havre</settlement></placeName><orgName type="university">Université du Havre</orgName></affiliation></author><author><name sortKey="Le Derf, F" sort="Le Derf, F" uniqKey="Le Derf F" first="F" last="Le Derf">F. Le Derf</name><affiliation wicri:level="4"><nlm:affiliation>Laboratoire COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France. Electronic address: franck.lederf@univ-rouen.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Evreux</settlement></placeName><orgName type="university">Université de Rouen</orgName></affiliation></author></analytic><series><title level="j">Chemosphere</title><idno type="eISSN">1879-1298</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chelating Agents (chemistry)</term><term>Electricity</term><term>Environmental Restoration and Remediation (methods)</term><term>Geologic Sediments (chemistry)</term><term>Metals, Heavy (chemistry)</term><term>Polycyclic Hydrocarbons, Aromatic (chemistry)</term><term>Polysorbates (chemistry)</term><term>Pseudomonas fluorescens (metabolism)</term><term>Surface-Active Agents (chemistry)</term><term>Water Pollutants, Chemical (chemistry)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Chelating Agents</term><term>Metals, Heavy</term><term>Polycyclic Hydrocarbons, Aromatic</term><term>Polysorbates</term><term>Surface-Active Agents</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Geologic Sediments</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Pseudomonas fluorescens</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Environmental Restoration and Remediation</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electricity</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Dredged harbor sediment co-contaminated by heavy metals and polycyclic aromatic hydrocarbons (PAHs) was subjected to enhanced electrokinetic treatments, using a mixture of a chelating agent (citric acid CA) and a surfactant as additives in the processing fluids. We tested various operating conditions (at 1 V cm(-1)): different CA concentrations, applying a periodic voltage gradient, pre-conditioning the sediment with the additives, and replacing the synthetic surfactant Tween 20 (TW20) by biosurfactants. Increasing the CA concentration was favorable for both metal and PAH removal. Applying a periodic voltage gradient associated to a low concentration of CA and TW20 provided the best results for Zn, Cd and Pb removal and also for removal of the 16 priority PAHs. Promising results were obtained with solutions containing rhamnolipids (0.028%) and a viscosin-like biosurfactant produced by Pseudomonas fluorescens Pfa7B (0.025%), associated to a periodic voltage gradient. Although the rhamnolipid and the viscosin-like compounds involved a higher electrical current than TW20, metals were less removed from the sediment. The electroosmotic flow was lower when we used biosurfactants, hence a less effective effect on PAH removal.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Haute-Normandie</li><li>Région Normandie</li></region><settlement><li>Evreux</li><li>le Havre</li></settlement><orgName><li>Université de Rouen</li><li>Université du Havre</li></orgName></list><tree><country name="France"><region name="Région Normandie"><name sortKey="Ammami, M T" sort="Ammami, M T" uniqKey="Ammami M" first="M T" last="Ammami">M T Ammami</name></region><name sortKey="Benamar, A" sort="Benamar, A" uniqKey="Benamar A" first="A" last="Benamar">A. Benamar</name><name sortKey="Duclairoir Poc, C" sort="Duclairoir Poc, C" uniqKey="Duclairoir Poc C" first="C" last="Duclairoir-Poc">C. Duclairoir-Poc</name><name sortKey="Le Derf, F" sort="Le Derf, F" uniqKey="Le Derf F" first="F" last="Le Derf">F. Le Derf</name><name sortKey="Portet Koltalo, F" sort="Portet Koltalo, F" uniqKey="Portet Koltalo F" first="F" last="Portet-Koltalo">F. Portet-Koltalo</name><name sortKey="Wang, H" sort="Wang, H" uniqKey="Wang H" first="H" last="Wang">H. Wang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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