Characterization of the submarine disposal of a Bayer effluent (Gardanne alumina plant, southern France): II. Chemical composition of the clarified effluent and mineralogical composition of the concretions formed by its discharge in the Mediterranean Sea
| العنوان: | Characterization of the submarine disposal of a Bayer effluent (Gardanne alumina plant, southern France): II. Chemical composition of the clarified effluent and mineralogical composition of the concretions formed by its discharge in the Mediterranean Sea |
|---|---|
| المؤلفون: | Aimée Laurenne Koumba Boussougou, Priscia Oliva, Cédric Garnier, Christophe Monnin, Stephanie Jacquet, Aimée Boussougou |
| المساهمون: | Géosciences Environnement Toulouse (GET), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN) |
| المصدر: | Environmental Advances Environmental Advances, Elsevier, 2021, 5, pp.100087. ⟨10.1016/j.envadv.2021.100087⟩ Environmental Advances, 2021, 5, pp.100087. ⟨10.1016/j.envadv.2021.100087⟩ Environmental Advances, Vol 5, Iss, Pp 100087-(2021) |
| بيانات النشر: | HAL CCSD, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Gardanne, Akaganéite, Bayer residue, Alumina, Hydrotalcite, 010501 environmental sciences, Environmental Science (miscellaneous), engineering.material, 010502 geochemistry & geophysics, 01 natural sciences, Red muds, chemistry.chemical_compound, Mediterranean Sea, Environmental Chemistry, GE1-350, 14. Life underwater, Effluent, Chemical composition, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Calcite, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, Global and Planetary Change, Brucite, 6. Clean water, Environmental sciences, chemistry, Bayer liquor, [SDU]Sciences of the Universe [physics], Environmental chemistry, engineering, Hydroxide, Seawater |
| الوصف: | International audience; The Gardanne alumina plant (Marseille region, Southeast France) has disposed its residues as a slurry (red muds) in the Mediterranean Sea up to 2015 when new regulations allowed the sole discharge of a clarified effluent. This reduced the quantity of suspended material from ~300 g/L to less than 10 mg/L. The detailed chemical composition of this clarified effluent has been determined by ICP-OES, ionic chromatography, 1H NMR spectroscopy and carbon analysis. It is a Na–Al–OH aqueous solution at pH 12.5 having a solute load of 1.5 g/L and an organic carbon content of about 100 mg/L, all other elements being in minor or trace amounts. A X-ray diffraction and SEM study showed that the submarine concretions forming at the outfall upon mixing the effluent with seawater are predominantly composed of a Mg–Al–OH double layer hydroxide of the hydrotalcite supergroup that contains Ca and S (wermlandite subgroup), along with minor calcite, bayerite, and rarely brucite and akaganeite (an iron hydroxide). The investigation of the stability of standard hydrotalcite in the marine environment through solubility calculations showed that hydrotalcite minerals are not stable in normal seawater and as such are prone to dissolve and release their components to the environment. |
| اللغة: | English |
| تدمد: | 2666-7657 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22fe923428ff0ad46da9dd23eb45a1be https://hal-insu.archives-ouvertes.fr/insu-03324498/document |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....22fe923428ff0ad46da9dd23eb45a1be |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 26667657 |
|---|