دورية أكاديمية
Remobilization of trace metals during laboratory resuspension of contaminated sediments from a dam reservoir
| العنوان: | Remobilization of trace metals during laboratory resuspension of contaminated sediments from a dam reservoir |
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| المؤلفون: | Monnin, Lucie, Ciffroy, Philippe, Garnier, Jean-Marie, Ambrosi, Jean-Paul, Radakovitch, Olivier |
| المساهمون: | Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Electricité de France, Partenaires INRAE, Laboratoire de recherche sur les transferts des radionucléides dans les écosystèmes aquatiques (IRSN/PSE-ENV/SRTE/LRTA), Service de recherche sur les transferts et les effets des radionucléides sur les écosystèmes (IRSN/PSE-ENV/SRTE), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), EDF-France |
| المصدر: | ISSN: 1439-0108. |
| بيانات النشر: | HAL CCSD Springer Verlag |
| سنة النشر: | 2018 |
| المجموعة: | IRSN (Institut de Radioprotection et de Sûreté Nucléaire): Publications (HAL |
| مصطلحات موضوعية: | Metal remobilization, Sediment resuspension, Speciation, Dam reservoir, [SDV]Life Sciences [q-bio] |
| الوصف: | International audience ; Dam reservoirs sometimes need to be fully drawn down, an operation that induces sediment resuspension. In the case of contaminated sediments, such resuspension may promote the remobilization of trace metals from the solid to the dissolved phase, threatening the water quality. The objective of this study is to evaluate the kinetic release and removal processes of trace metals during the resuspension of polluted sediments from a dam reservoir. Total contents of trace elements were analyzed in the surface sediments collected in the dam. Ascorbate and sequential extractions were used to assess the trace metal fractionation. Aliquots of wet sediments were resuspended during a week using a 3-L glass reactor. Three solid/solution ratios (2.7, 5.0, and 9.4 g L-1) were tested. The pH, Eh, dissolved oxygen, and temperature were continuously measured, and water samples were collected through a small pipe inserted into the reactor. Evolution of dissolved organic carbon, alkalinity, major ions, and trace element concentrations were measured in the water over the resuspension experiments. Another resuspension experiment was carried out to determine the quantity of elements that could be adsorbed onto the glass wall of the reactor. High levels of As, Cd, Pb, and Zn were measured in the reservoir sediments, compared to the quality guidelines. The temporal evolutions of the dissolved elements were similar during the resuspension experiments, regardless of the mass of sediment used. Depending on the elements, different trends can be highlighted: (1) Cd, Cr, Cu, Ni, V, and Zn were not remobilized; (2) Al, Mo, As, Ba, and Sr continuously increased during the experiments; and (3) Mn, Co, Fe, and Pb increased at the beginning of the experiments and then were removed from the dissolved phase. Co was likely adsorbed onto Mn oxyhydroxides, whereas Pb appeared to be regulated by the Fe oxyhydroxides. The results from sequential extractions did not allow to relate these groups to specific distributions in the ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-02623307; https://hal.inrae.fr/hal-02623307Test; PRODINRA: 450183; WOS: 000434800400015 |
| DOI: | 10.1007/s11368-018-1931-5 |
| الإتاحة: | https://doi.org/10.1007/s11368-018-1931-5Test https://hal.inrae.fr/hal-02623307Test |
| رقم الانضمام: | edsbas.1731B0AE |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/s11368-018-1931-5 |
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