Environmental applications of high purity dolomite as flocculant, oxydant and metal precipitator

在一个不断变化和发展的社会中，增加对自然资源的利用是不可逆转的。加拿大可开采的自然资源助长了对我们的主要工业部门-采矿、能源（石油、水电）和农业的依赖。不幸的是，这些活动因其相关的污染而危害环境。因此，根据可持续发展的原则，有必要为这些工业提供新的技术，不仅要管理环境污染物，还要努力恢复环境。拟议中的项目希望开发一种名为白云岩的碳酸盐沉积岩的新环境应用。活性矿物白云石（CaMg (CO3)2）目前以其在农业中的应用而闻名，包括石灰化。在本项目中，高纯度白云石将作为混凝剂和消毒剂（氧化剂）在一个新的应用中使用。该项目针对三种环境应用：酸性矿山排水、农业径流和垃圾填埋场渗滤液。这些基质将用不同物理特性的白云石处理，从砾石的大小（用于反应性过滤器）到细粒度的粉末（用于反应器中作为中和剂）。该项目将产生新的知识（一种新的天然产品的化学和地球化学），并应用生态设计和反应堆工程方面的现有能力，开发创新的缓解措施，以减轻矿山酸性排水、农业径流和垃圾填埋场渗滤液污染对环境的重大影响。

In a society that is in constant change and development, the increased use of our natural resources is irreversible. Canada's exploitable natural resources foster dependence on our primary industry sectors - mining, energy (petroleum, hydropower) and agriculture. Unfortunately, these activities harm the environment because of their associated pollution. Thus, following principles of sustainable development, it is necessary to provide these industries with new techniques for not only managing environmental pollutants but also striving towards environmental restoration. The proposed project wants to develop new environmental applications of a carbonate sedimentary rock called dolomite. The active mineral dolomite (CaMg (CO3)2) is currently known for its use in agriculture including liming. In this project, a high purity dolomite will be used in a new application as a coagulant and disinfectant (oxidant). Three environmental applications are targeted through this project: acid mine drainage, agricultural runoff and landfill leachates. These matrices will be treated with dolomite under different physical characteristics ranging from the size of gravel (to be used in reactive filters) to fine-grained powder (to be used in reactors as a neutralizer). This project will generate new knowledge (chemistry and geochemistry of a new natural product) and apply existing abilities in eco-design and the engineering of reactors to develop innovative mitigation for significant environmental impacts due to pollution by acid mine drainage, agricultural runoff and landfill leachates.