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Comparison of organic materials for the passive treatment of synthetic neutral mine drainage contaminated by nickel: Adsorption and desorption kinetics and isotherms

Dominique Richard, Alfonso Mucci, Carmen Mihaela Neculita and Gérald J. Zagury

Article (2020)

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Abstract

Sorption is an effective process for the remediation of mine water with low metal concentrations. To identify promising low-cost organic sorbents for nickel (Ni), adsorption and retention properties of peat, compost, brown algae, sawdust, and wood ash were compared. Batch adsorption and desorption experiments were conducted at pH 7 in 0.05 M NaNO3 solutions to simulate the ionic strength and pH of a contaminated neutral drainage. Results of adsorption kinetic experiments were best represented by the Elovich model and the fastest rates were obtained with peat (796,075 mg g−1 min−1) and compost (791 mg g−1 min−1). Results of equilibration adsorption experiments were fitted to Langmuir and Freundlich isotherms and the highest adsorption capacities were observed for peat (around 22 mg g−1) and compost (around 9 mg g−1). Desorption experiments revealed that peat and compost adsorbed more Ni and also released a lower percentage of the adsorbed metal upon exposure to Ni-free solutions.

Uncontrolled Keywords

Neutral mine drainage, sorption, adsorption, desorption, kinetics, isotherms, nickel, organic materials.

Subjects: 1400 Mining and mineral processing > 1400 Mining and mineral processing
1400 Mining and mineral processing > 1401 Mining engineering
Department: Department of Civil, Geological and Mining Engineering
Research Center: RIME - Research Institute on Mines and the Environment UQAT-Polytechnique
Funders: CRSNG/NSERC, the industrial partners of the 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)
Grant number: 469489-14
PolyPublie URL: https://publications.polymtl.ca/46469/
Journal Title: Water, Air, and Soil Pollution (vol. 231, no. 12)
Publisher: Springer Science and Business Media Deutschland GmbH
DOI: 10.1007/s11270-020-04917-z
Official URL: https://doi.org/10.1007/s11270-020-04917-z
Date Deposited: 18 Apr 2023 15:01
Last Modified: 06 Nov 2024 09:53
Cite in 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: Adsorption and desorption kinetics and isotherms. Water, Air, and Soil Pollution, 231(12), 556 (15 pages). https://doi.org/10.1007/s11270-020-04917-z

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