Reference number : GC-2017-Q4-01823, amendment number : , agreement type : G, recipient legal name : van Hinsberg, Vincent (McGill University)|van Hinsberg, Vincent (Université McGill), recipient country : CA, recipient province : nan, recipient city : Quebec|Québec, recipient postal code : nan, program name english : Collaborative Research and Development Grants - Project, program name french : Subventions de recherche et développement coopérative - projet, program purpose english : Canada is a leading mining nation and a major producer of base and precious metals (copper, nickel and gold),_x000D_
rare metals (rare earth elements and cesium) and industrial and gem minerals (barite, zeolite, diamond). The_x000D_
Abitibi greenstone belt of central Ontario and Quebec, in particular, is a world-class mining district for base_x000D_
metals and gold, and has been so for over 200 years. However, mining also creates challenges, with_x000D_
environmental impacts a particular concern. Many ore deposits contain toxic elements that end up in waste_x000D_
streams during mining, processing and smelting, and these materials need to be isolated from the environment._x000D_
Unlike many organic contaminants, metal toxicity does not decay over time, and long-term safe storage and_x000D_
isolation is therefore critical. One of the elements of particular concern is arsenic. Arsenic is a common_x000D_
element in many ore deposits and has a high toxicity in the biosphere. It is present up to mass percent levels in_x000D_
the sulfides that host the base and precious metals in many ore deposits, including those of the Abitibi, but with_x000D_
little direct value it generally ends up in the waste streams of metal production and extraction. Owing to its_x000D_
toxicity and the large volume of arsenic-contaminated material that exists, both from active metal production_x000D_
and as a legacy from 200 years of mining, there is an urgent need to develop new methods of containing and_x000D_
isolating arsenic. In fact, the costs of dealing with arsenic-waste currently makes several promising ore deposits_x000D_
in Canada uneconomical to mine. Recently, immobilization of arsenic in synthetic glass has been proposed as a_x000D_
long-term safe storage solution, equivalent to the approach proposed for radionuclide wastes. The research_x000D_
proposed here will develop a thermodynamic database for these glasses based on phase diagram experiments._x000D_
This database will allow for predictive modelling of the glass process, thereby identifying the optimum_x000D_
chemical and physical conditions for the process in order to maximize arsenic immobilization while_x000D_
minimizing energy consumption and furnace wear. This predictive modelling capability is crucial to transform_x000D_
this technology from the laboratory to a functioning and profitable industrial process., program purpose french : Canada is a leading mining nation and a major producer of base and precious metals (copper, nickel and gold),_x000D_
rare metals (rare earth elements and cesium) and industrial and gem minerals (barite, zeolite, diamond). The_x000D_
Abitibi greenstone belt of central Ontario and Quebec, in particular, is a world-class mining district for base_x000D_
metals and gold, and has been so for over 200 years. However, mining also creates challenges, with_x000D_
environmental impacts a particular concern. Many ore deposits contain toxic elements that end up in waste_x000D_
streams during mining, processing and smelting, and these materials need to be isolated from the environment._x000D_
Unlike many organic contaminants, metal toxicity does not decay over time, and long-term safe storage and_x000D_
isolation is therefore critical. One of the elements of particular concern is arsenic. Arsenic is a common_x000D_
element in many ore deposits and has a high toxicity in the biosphere. It is present up to mass percent levels in_x000D_
the sulfides that host the base and precious metals in many ore deposits, including those of the Abitibi, but with_x000D_
little direct value it generally ends up in the waste streams of metal production and extraction. Owing to its_x000D_
toxicity and the large volume of arsenic-contaminated material that exists, both from active metal production_x000D_
and as a legacy from 200 years of mining, there is an urgent need to develop new methods of containing and_x000D_
isolating arsenic. In fact, the costs of dealing with arsenic-waste currently makes several promising ore deposits_x000D_
in Canada uneconomical to mine. Recently, immobilization of arsenic in synthetic glass has been proposed as a_x000D_
long-term safe storage solution, equivalent to the approach proposed for radionuclide wastes. The research_x000D_
proposed here will develop a thermodynamic database for these glasses based on phase diagram experiments._x000D_
This database will allow for predictive modelling of the glass process, thereby identifying the optimum_x000D_
chemical and physical conditions for the process in order to maximize arsenic immobilization while_x000D_
minimizing energy consumption and furnace wear. This predictive modelling capability is crucial to transform_x000D_
this technology from the laboratory to a functioning and profitable industrial process., agreement title english : Investigation of phase diagrams and development of a thermodynamic database for the Na2O-SiO2 based glass system for As immobilization, agreement title french : Investigation of phase diagrams and development of a thermodynamic database for the Na2O-SiO2 based glass system for As immobilization, agreement number : CRDPJ, agreement value : , agreement start date : 2018-01-10, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada