Multiphysics of bubbles and nanoparticles in porous media: Novel approaches to the remediation of subsurface environments contaminated by chlorinated organic substances

多孔介质中气泡和纳米颗粒的多物理场：修复受氯化有机物质污染的地下环境的新方法

• 批准号: 194309-2013
• 负责人: Ioannidis, Marios
• 金额: $ 1.89万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=523168
• 关键词: Multiphysics; bubbles; nanoparticles; porous; media

Soil and groundwater at abandoned industrial facilities (brown-field sites) in Canada remain contaminated by chlorinated volatile organic compounds (VOCs), long after the use of these chemicals has ceased. Chlorinated organics are denser than water, causing subsurface contamination deep below the water table. Their intermediate by-products are believed to be potent carcinogens and are thus a major threat to groundwater resources. The success of many remediation strategies is limited by the difficulty of introducing a gas phase uniformly within VOC source zones below the water table, as would be necessary for transferring a VOC into the flowing gas phase or for supplying reactive gases (e.g., oxygen, hydrogen, methane) for use by contaminant-degrading bacteria.

加拿大废弃工业设施（棕地）的土壤和地下水仍然受到氯化挥发性有机化合物（VOCs）的污染，即使这些化学品已经停止使用很久。氯化有机物的密度比水大，导致地下水位以下的地下污染。 它们的中间副产品被认为是强致癌物，因此是对地下水资源的主要威胁。许多补救策略的成功受到将气相均匀引入地下水位以下的VOC源区域内的困难的限制，这对于将VOC转移到流动的气相中或对于供应反应性气体（例如，氧气、氢气、甲烷）供污染物降解细菌使用。