NSERC Industrial Research Chair in Fate and Transport of Reactive Solutes Diffusion-Dominated Systems

NSERC 反应性溶质扩散主导系统的命运和输运工业研究主席

• 批准号: 184573-2010
• 负责人: Hendry, James
• 金额: $ 16.23万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Industrial Research Chairs
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=591642
• 关键词: NSERC; Industrial; Research; Chair; Fate

This application proposes a 4th term for an NSERC-Industrial Research Chair in Aqueous and Environmental Geochemistry. The proposed research builds upon work conducted by the applicant in the current and past IRC terms. Phase I research focuses on geochemical reactions and solute transport in clay-rich aquitards, with objectives to 1) define spatial variability in water and solute transport in clay-rich aquitard systems; 2) characterize solute transport mechanisms in the Williston Basin using tracer profiles; 3) characterize solute transport mechanisms in the Great Artesian Basin using tracer profiles; 4) assess the role of faulting on solute transport in the Williston Basin; and 5) assess long-term reactive transport of solutes in thick claystone. Phase I research will provide better understanding of the migration of water, salts, and contaminants in aquitards. This research will be of value for determining the extent of contaminant transport in near surface aquitards and the origin of the inflows into existing and proposed potash mines and a proposed open pit diamond mine in Saskatchewan. Moreover, the findings will continue to serve as a benchmark for the use of claystone host rocks as viable geological repositories for radioactive or toxic chemical wastes both in Canada and internationally. Phase II research focuses on geochemical reactions and solute transport in uranium mill tailings, with objectives to 1) determine controls exerted by Ca-As minerals on As concentrations in tailings; 2) define the impact of Eh and pH interfacial gradients on the stability of elements of concern (EOCs); 3) define and detail the controls on EOC source terms; 4) identify alternate mill methods to produce tailings that reduce long-term EOC source terms; and 5) synthesize findings of tailings research. Phase II research will assist one of the industrial partners (Cameco) in ensuring protection of the environment by planning for waste disposal, in operating the waste disposal facilities, and in obtaining and retaining regulatory approval for mine sites. The research will ultimately set the path for the development of new mines and hydrometallurgical mill processes as they progress from feasibility to full production.

本申请提出了一个NSERC工业研究主席在水和环境的第四任期 地球化学。拟议的研究建立在申请人在当前和过去的IRC中进行的工作基础上 届第一阶段的研究重点是地球化学反应和溶质运移在粘土丰富的弱透水层， 目标是：1）确定富粘土弱透水层系统中水和溶质运移的空间变异性; 2） 利用示踪剂剖面表征威利斯顿盆地的溶质运移机制; 3）表征溶质 利用示踪剂剖面研究了大Arabian盆地的运移机制; 4）评估了断层作用对溶质运移的影响 运输在威利斯顿盆地;和5）评估长期反应运输的溶质在厚粘土岩。一期 研究将使人们更好地了解弱透水层中水、盐和污染物的迁移情况。这 研究对于确定近地表弱透水层中污染物输运的程度以及 流入现有和拟建钾盐矿和拟建露天钻石矿的资金来源 萨斯喀彻温省。此外，研究结果将继续作为使用粘土岩寄主岩石的基准 作为加拿大和国际上放射性或有毒化学废物的可行地质储存库。 第二阶段的研究重点是铀尾矿中的地球化学反应和溶质运移， 目的：1）确定钙砷矿物对尾矿中砷浓度的控制作用; 2）确定钙砷矿物对尾矿中砷浓度的控制作用。 Eh和pH界面梯度对关注元素（EOC）稳定性的影响; 3）定义和详细说明 对EOC源项的控制; 4）确定替代的磨机方法来生产尾矿， EOC源项;以及5）综合尾矿研究的结果。第二阶段的研究将帮助其中一个 工业合作伙伴（Cameco）通过规划废物处理确保保护环境， 运营废物处理设施，以及获得和保留对矿场的监管批准。的 研究将最终为开发新的矿山和湿法冶金工艺确定道路 随着它们从可行性到全面生产的进展。