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Metahni S, Coudert L, Blais JF, Tran LH, Gloaguen E, Mercier G, Mercier G. Techno-economic assessment of an hydrometallurgical process to simultaneously remove As, Cr, Cu, PCP and PCDD/F from contaminated soil. J Environ Manage 2020; 263:110371. [PMID: 32174522 DOI: 10.1016/j.jenvman.2020.110371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 02/12/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
Industrial activities lead to the contamination of large amounts of soils polluted by both inorganic and organic compounds, which are difficult to treat due to different chemical properties. The efficiency of a decontamination process developed to simultaneously remove mixed contamination of industrial soils was evaluated at the pilot-scale, as well as operating costs associated to that process to define the best remediation approach. The results showed that the treatment of the coarse fractions (>0.250 mm) of 40 kg of soil by attrition in countercurrent mode allowed the removal of 17-42% of As, 3-31% of Cr, 20-38% of Cu, and 64-75% of polychlorinated dioxins and furans (PCDD/F). Removals of 60% for As, 2.2% for Cr, 23% for Cu, and 74% for PCDD/F were obtained during the treatment of attrition sludge (<0.250 mm) by alkaline leaching process. However, the results of the techno-economic evaluation, carried out on a fixed plant with an annual treatment capacity of 7560 tons of soil treated (tst), showed that the estimated overall costs for the attrition process alone [scenario 1] (CAD$ 451/tst) were lower than the costs of the process, which additionally includes an alkaline leaching step to treat attrition sludge [scenario 2] (CAD$ 579/tst). This techno-economic evaluation also showed that the process becomes competitive with current disposal options (thermal desorption and landfilling - CAD$ 600/tst) from a certain treatment capacity, which is around of 3465 tst/yr for the scenario 1 and 6930 tst/yr for the scenario 2. On the other hand, the techno-economic evaluations are crucial to selecting feasible decontamination process for a soil remediation project, with considerations of the type of contamination, site characteristics and cost effectiveness.
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Affiliation(s)
- Sabrine Metahni
- Institut National de la Recherche Scientifique (Centre Eau Terre Environnement), Université du Québec, 490 Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Lucie Coudert
- Université du Québec en Abitibi-Témiscamingue (Institut de Recherche en Mines et Environnement), Université du Québec, 445 Boulevard de l'Université, Rouyn-Noranda, Qc, J9X 5E4, Canada.
| | - Jean-Francois Blais
- Institut National de la Recherche Scientifique (Centre Eau Terre Environnement), Université du Québec, 490 Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Lan Huong Tran
- Institut National de la Recherche Scientifique (Centre Eau Terre Environnement), Université du Québec, 490 Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Erwan Gloaguen
- Institut National de la Recherche Scientifique (Centre Eau Terre Environnement), Université du Québec, 490 Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Gabrielle Mercier
- Institut National de la Recherche Scientifique (Centre Eau Terre Environnement), Université du Québec, 490 Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Guy Mercier
- Institut National de la Recherche Scientifique (Centre Eau Terre Environnement), Université du Québec, 490 Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
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Metahni S, Coudert L, Gloaguen E, Guemiza K, Mercier G, Blais JF. Comparison of different interpolation methods and sequential Gaussian simulation to estimate volumes of soil contaminated by As, Cr, Cu, PCP and dioxins/furans. Environ Pollut 2019; 252:409-419. [PMID: 31158669 DOI: 10.1016/j.envpol.2019.05.122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/09/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Understanding the spatial distribution of organic and/or inorganic contaminants is crucial to facilitate decision-making of rehabilitation strategies in order to ensure the most appropriate management of contaminated sites in terms of contaminant removals efficiencies and operating costs. For these reasons, various interpolation methods [Thiessen Polygon (TP) method, inverse of distance (IDW) method, ordinary kriging (OK), as well as sequential Gaussian simulations (SGS)] were used to better understand the spatial distribution of As, Cr, Cu, pentachlorophenol (PCP) and dioxins and furans (PCDD/F) found onto a specific industrial site. These methods do not only vary in complexity and efficiency but also lead to different results when using values coming from the same characterization campaign. Therefore, it is often necessary to evaluate their relevance by performing a comparative analysis. The results showed that ordinary kriging (OK) was a better estimator of the mean and more advanced compared to the two other methods of interpolation (TP and IDW). However, it appeared that SGS has the same power than OK but it also permitted to calculate a reliable value of the probabilities of exceeding regulatory cut-offs of contamination.
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Affiliation(s)
- Sabrine Metahni
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Lucie Coudert
- Université du Québec en Abititi-Témiscamingue (Institut de Recherche en Mines et Environnement), Université du Québec, 445 Boulevard de l'Université, Rouyn-Noranda, Qc, J9X 5E4, Canada.
| | - Erwan Gloaguen
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Karima Guemiza
- Centre technologique des résidus industriels en Abititi-Témiscamingue, 433 boulevard du collège, Rouyn-Noranda, Qc, J9X 0E1, Canada.
| | - Guy Mercier
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | - Jean-Francois Blais
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
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Guemiza K, Coudert L, Tran LH, Metahni S, Blais JF, Besner S, Mercier G. Optimizing removal of arsenic, chromium, copper, pentachlorophenol and polychlorodibenzo-dioxins/furans from the 1-4 mm fraction of polluted soil using an attrition process. Environ Technol 2017; 38:1862-1877. [PMID: 27652498 DOI: 10.1080/09593330.2016.1239658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 09/04/2016] [Indexed: 06/06/2023]
Abstract
The objective of this study was to evaluate, at a pilot scale, the performance of an attrition process for removing As, Cr, Cu, pentachlorophenol (PCP) and polychlorodibenzodioxins and furans (PCDDF) from a 1-4 mm soil fraction. A Box-Behnken experimental design was utilized to evaluate the influence of several parameters (temperature, surfactant concentration and pulp density) and to optimize the main operating parameters of this attrition process. According to the results, the concentration of surfactant (cocamidopropylbetaine-BW) was the main parameter influencing both PCP and PCDDF removal from the 1-4 mm soil fraction by attrition. The behavior of each 2,3,7,8-PCDD/F congener during the attrition process was studied. The results indicated that the concentration of surfactant had a significant and positive effect on the removal of almost all of the dioxin and furan. The removal of 56%, 55%, 50%, 67% and 62% of the contaminants were obtained for As, Cr, Cu, PCP and PCDDF, respectively, using the optimized conditions ([BW]= 2% (w.w-1), T = 25°C and PD = 40% (w.w-1)). These results showed that attrition in the presence of a surfactant can be efficiently used to remediate the coarse fractions of soil contaminated by As, Cr, Cu, PCP and PCDDF.
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Affiliation(s)
- Karima Guemiza
- a Institut national de la recherche scientifique (Centre Eau, Terre et Environnement) , Université du Québec , Québec , QC , Canada
| | - Lucie Coudert
- a Institut national de la recherche scientifique (Centre Eau, Terre et Environnement) , Université du Québec , Québec , QC , Canada
| | - Lan Huong Tran
- a Institut national de la recherche scientifique (Centre Eau, Terre et Environnement) , Université du Québec , Québec , QC , Canada
| | - Sabrine Metahni
- a Institut national de la recherche scientifique (Centre Eau, Terre et Environnement) , Université du Québec , Québec , QC , Canada
| | - Jean-François Blais
- a Institut national de la recherche scientifique (Centre Eau, Terre et Environnement) , Université du Québec , Québec , QC , Canada
| | - Simon Besner
- b Institut de recherche d'Hydro-Québec (IREQ) , IREQ , Varennes , QC , Canada
| | - Guy Mercier
- a Institut national de la recherche scientifique (Centre Eau, Terre et Environnement) , Université du Québec , Québec , QC , Canada
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Guemiza K, Coudert L, Metahni S, Mercier G, Besner S, Blais JF. Treatment technologies used for the removal of As, Cr, Cu, PCP and/or PCDD/F from contaminated soil: A review. J Hazard Mater 2017; 333:194-214. [PMID: 28359036 DOI: 10.1016/j.jhazmat.2017.03.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 03/08/2017] [Accepted: 03/09/2017] [Indexed: 06/07/2023]
Abstract
The contamination of soils by metals such as arsenic, chromium, copper and organic compounds such as pentachlorophenol (PCP) and dioxins and furans (PCDD/F) is a major problem in industrialized countries. Excavation followed by disposal in an appropriate landfilling is usually used site to manage these contaminated soils. Many researches have been conducted to develop physical, biological, thermal and chemical methods to allow the rehabilitation of contaminated sites. Thermal treatments including thermal desorption seemed to be the most appropriate methods, allowing the removal of more than 99.99% of organic contaminants but, they are ineffective for inorganic compounds. Biological treatments have been developed to remove inorganic and hydrophobic organic contaminants but their applications are limited to soils contaminated by easily biodegradable organic compounds. Among the physical technologies available, attrition is the most commonly used technique for the rehabilitation of soils contaminated by both organic and inorganic contaminants. Chemical processes using acids, bases, redox agents and surfactants seemed to be an interesting option to simultaneously extract organic and inorganic contaminants from soils. This paper will provide an overview of the recent developments in the field of decontamination technologies applicable for the removal of As, Cr, Cu, PCP and/or PCDD/F from contaminated soils.
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Affiliation(s)
- Karima Guemiza
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1 K 9A9, Canada.
| | - Lucie Coudert
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1 K 9A9, Canada.
| | - Sabrine Metahni
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1 K 9A9, Canada.
| | - Guy Mercier
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1 K 9A9, Canada.
| | - Simon Besner
- Institut de recherche d'Hydro-Québec (IREQ), IREQ, 1800, boul. Lionel-Boulet, Varennes, QC, J3X 1S1, Canada.
| | - Jean-François Blais
- Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1 K 9A9, Canada.
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