Selective metal leaching from technosols based on synthetic root exudate composition
| العنوان: | Selective metal leaching from technosols based on synthetic root exudate composition |
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| المؤلفون: | Zeinab Matar, Véronique Kazpard, Ghina Abed-AlHadi Safa, Hussein Jaafar Kanbar |
| المساهمون: | Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Terre et Environnement de Lorraine (OTELo), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Lebanese University [Beirut] (LU), Umeå University |
| المصدر: | Journal of Environmental Sciences Journal of Environmental Sciences, Elsevier, 2020, 96, pp.85-92. ⟨10.1016/j.jes.2020.04.040⟩ |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Environmental Engineering, Oxalic acid, Technosol, 010501 environmental sciences, 01 natural sciences, Citric Acid, law.invention, Metal, chemistry.chemical_compound, law, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, Desorption, Spectroscopy, Fourier Transform Infrared, Soil Pollutants, Environmental Chemistry, Dissolution, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, General Environmental Science, Oxalic Acid, 04 agricultural and veterinary sciences, General Medicine, chemistry, Metals, 13. Climate action, visual_art, [SDE]Environmental Sciences, 040103 agronomy & agriculture, visual_art.visual_art_medium, 0401 agriculture, forestry, and fisheries, Composition (visual arts), Atomic absorption spectroscopy, Citric acid, Nuclear chemistry, [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy |
| الوصف: | This study focused on metal release from technosols induced by synthetic root exudate (SRE). The effect of SRE composition on metal release was studied using six technosols. This was done by treating the technosols with SRE solutions having varying concentrations of low molecular weight organic acids (LMWOAs), namely oxalic, citric, and malic acids. Consequently, the physico-chemical parameters (pH and electric conductivity), Ca, Mg, Fe, Zn, and Cu release (by atomic absorption spectroscopy, AAS), chemical changes (by Fourier transform infrared, FT-IR), and organic parameters (by fluorescence) were investigated. Metal release showed to be dependent on the SRE composition and technosol characteristics. Citric acid selectively released Ca, Mg, Zn, and Cu from technosols in a concentration-dependent manner; oxalic acid showed a significant role in the release of Mg and Fe. Under relatively high LMWOA concentrations, particulate organo-mineral complexes precipitated. Additionally, technosol weathering was seen by the dissolution of humic substances and ferriallophanes, which in turn caused metal release. However, re-precipitation of these phases showed to re-sorb metals, thus underestimating the role of LMWOAs in metal release. Therefore, the selective metal leaching was highly dependent on the SRE composition and LMWOA concentrations on one hand, and on the mineral, organic, and organo-mineral components of the technosols on the other. The understanding of such processes is crucial for proposing and implementing environmental management strategies to reduce metal leaching or for the beneficial re-usage of metals (e.g., for agromining) from technosols. |
| اللغة: | English |
| تدمد: | 1001-0742 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0404d8b1d8a95bd0a78914905a620699 https://hal.archives-ouvertes.fr/hal-03317781 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....0404d8b1d8a95bd0a78914905a620699 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10010742 |
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