Dominique Richard, Alfonso Mucci, Carmen Mihaela Neculita et Gérald J. Zagury
Article de revue (2020)
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Abstract
This paper addresses the comparison of various low-cost organic materials for the passive treatment of circum-neutral pH contaminated mine water. First, the effectiveness of five organic materials to remove Ni from a contaminated neutral drainage (CND) was compared in short-term batch experiments (24 h) at various pH values. Second, based on results of the short-term experiments, two substrates (brown algae and sawdust) were eliminated and three (horticultural peat, compost, wood ash) were compared along with a new substrate (field-collected surface peat) in medium-term (56 days) batch experiments to treat CND. In these experiments, calcite was added to peat samples and all substrates performed equally well, sequestering over 97% of the Ni. Chemical extractions revealed that Ni was more strongly bound to the horticultural peat-calcite (HD-peat-calcite) residue than to the field-collected peat-calcite (LT-peat-calcite) residue. Compost, because of its higher density, was identified as the most promising candidate for sorption-based fixed-bed column experiments. Nevertheless, wood ash should not be discarded as its alkaline properties favor nickel removal.
Mots clés
Neutral mine drainage, Nickel, Sorption, Chemical extractions, Batch reactors, Organic materials
Sujet(s): | 1400 Génie minier et minéral > 1400 Génie minier et minéral |
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Département: | Département des génies civil, géologique et des mines |
Centre de recherche: | IRME - Institut de recherche en mines et environnement UQAT-Polytechnique |
Organismes subventionnaires: | CRSNG/NSERC, RIME UQAT Polytechnique Montreal, including Agnico Eagle, Mine Canadian Malartic, Iamgold, Raglan Mine Glencore, and Rio Tinto, Fonds de recherche Nature et technologies (FQRNT), Fondation et alumni de Polytechnique Montréal (Bourse Banque de Montréal) |
Numéro de subvention: | 469489-14 |
URL de PolyPublie: | https://publications.polymtl.ca/46488/ |
Titre de la revue: | Applied Geochemistry (vol. 123) |
Maison d'édition: | Elsevier Ltd |
DOI: | 10.1016/j.apgeochem.2020.104772 |
URL officielle: | https://doi.org/10.1016/j.apgeochem.2020.104772 |
Date du dépôt: | 18 avr. 2023 15:01 |
Dernière modification: | 16 août 2024 22:54 |
Citer en APA 7: | Richard, D., Mucci, A., Neculita, C. M., & Zagury, G. J. (2020). Comparison of organic materials for the passive treatment of synthetic neutral mine drainage contaminated by nickel: Short- and medium-term batch experiments. Applied Geochemistry, 123, 104772 (11 pages). https://doi.org/10.1016/j.apgeochem.2020.104772 |
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