Contact angle measurement system for environmental surface science research

用于环境表面科学研究的接触角测量系统

• 批准号: 345469-2007
• 负责人: Ghoshal, Subhasis
• 金额: $ 3.14万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325694
• 关键词: Contact; angle; measurement; system; environmental

A Contact Angle Measurement system is requested for characterization of bacterial surfaces, oil-water interfaces, and porous media surfaces.  The characterization of these surfaces will allow development of strategies to improve the environmental quality at sites contaminated by oil pollution, or by pathogens and toxic nano-particle agents.  The Contact Angle Measurement system determines surface tension of various liquids and surface characteristics of solid surfaces from images of liquid drops on surfaces. The Contact Angle Measurement system will be used to support the collaborative research of two applicants.  A major research program, for which the instrument will be used, is aimed at developing strategies for rapid clean-up of petroleum-contaminated soils. The Contact Angle Measurement system will allow us to study the adhesion of various pollutant-degrading bacteria on oil-water interfaces.  The information will be used to determine how pollutant-degrading bacteria can be effectively delivered through groundwater to impacted areas of contaminated sites. The requested instrument will be used also to study the mobilization behaviour of oil spills in soils and aquifers under cold temperatures typical to Canada.   The Contact Angle Measurement system will be used to investigate the transport and retention of colloidal environmental contaminants such as manufactured nano-materials and waterborne pathogens in aquifer sands and soils, and in wastewater treatment systems. The presence of waterborne pathogens and parasites such as E. coli O157:H7, Cryptosporidium and of toxic metallic nano-particles in aquifers pose serious threats to public health. The requested equipment will allow us to characterize the surface properties of manufactured nano-particles and pathogenic bacteria and of soil particles or other surfaces to facilitate understanding of the environmental parameters that influence their transport.

接触角测量系统需要用于表征细菌表面、油水界面和多孔介质表面。这些表面的表征将有助于制定战略，以改善受石油污染的场地的环境质量，或病原体和有毒的纳米-接触角测量系统可通过以下图像确定各种液体的表面张力和固体表面的表面特性：表面上的液滴。接触角测量系统将用于支持两个申请人的合作研究。该仪器将用于一个主要研究计划，旨在制定快速清理石油污染土壤的策略。接触角测量系统将使我们能够研究各种污染物降解细菌在油水界面上的粘附情况。这些信息将用于确定污染物降解细菌如何通过地下水有效地传递到受污染场地的受影响区域。所要求的仪器还将用于研究加拿大特有的低温条件下土壤和含水层中溢油的迁移行为。 接触角测量系统将用于研究胶体环境污染物的运输和保留，例如含水层砂和土壤中的人造纳米材料和水媒病原体，以及废水处理系统。水传播的病原体和寄生虫如大肠杆菌的存在。大肠杆菌O 157：H7、隐孢子虫和含水层中有毒金属纳米颗粒对公众健康构成严重威胁。所要求的设备将使我们能够确定所制造的纳米颗粒和病原菌以及土壤颗粒或其他表面的表面特性，以便于了解影响其迁移的环境参数。