UNS: Collaborative Research: Effects of Nano-Bio Interactions on Nanoparticle Fate and Transport in Porous Media

UNS：合作研究：纳米生物相互作用对多孔介质中纳米颗粒命运和传输的影响

• 批准号: 1704326
• 负责人: John Fortner
• 金额: $ 16万
• 依托单位: Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1704326&HistoricalAwards=false
• 关键词: UNS; Collaborative; Research; Effects; Nano

Despite dramatic increases in the production and use of engineered nanomaterials in industrial and consumer products, very little is known about the fate and transport of nanoparticles following their release into the environment. The overall goal of this project is to better understand the interactions between engineered nanoparticles and microbial communities, and to use this information to improve predictions of nanoparticle accumulation and mobility in soils, groundwater, and water treatment systems. To broaden the educational outreach and practical implications of this work, the project includes research experiences for undergraduate students and the development of interactive, multi-media instructional tools that will be incorporated into educational and training programs run by the Center for Engineering Education and Outreach and Center for Science, Technology, Engineering and Math Diversity. Research conducted over the past ten years has greatly improved our knowledge of nanoparticle aggregation and mobility over a range of environmentally-relevant conditions, and has informed the development of mathematical models capable of describing nanoparticle transport and retention in membranes, filter beds and aquifer materials. At the same time, numerous studies have explored the impacts of nanoparticles on cellular systems, aquatic invertebrates, fish, and microorganisms. The overall goal of this research project is to combine these two lines of research to investigate the role of nano-bio interactions on nanoparticle fate and transport in porous media. The research project is coupling nanoparticle characterization and biotic experiments with dynamic transport studies to quantify the effects of nano-bio interactions on the mobility and fate of representative engineered nanomaterials (iron oxide and magnesium oxide) in aquifer materials and natural soils. Research activities are being structured around three tasks, (1) determination of nanoparticle deposition and release as a function of surface coating aging, biopolymers, and solution composition using a quartz crystal microbalance, (2) assessment of the effects of biopolymers on nanomaterial mobility and retention in abiotic columns, and (3) measurement of nanoparticle transport, deposition, and aging in aerobic and anaerobic bio-active soil columns. Novel aspects of the research include the direct coupling of microbial-particle interactions with transport, assessment of bio-related deposition, direct observation of nanoparticle behavior using flow-through scanning electron microscopy and cryo-transmission electron microscopy techniques. Results obtained from this work are being used to explore the role of microbial communities in the aging nanoparticle surface coatings, and the impacts of filter ripening and site blocking on nanoparticle attachment processes and mobility in the environment. To extend the impact of this work beyond traditional academic boundaries, research outcomes are being incorporated into model-based tutorials, short instructional videos, and illustrative case studies and modeling tools that will be disseminated through collaborations and participation in initiatives with the Center for Science Technology, Engineering and Math Diversity, the Bridge to Engineering Success at Tufts, and the Center for Engineering Education and Outreach at Brown.

尽管工业和消费产品中工程纳米材料的生产和使用急剧增加，但对纳米颗粒释放到环境后的命运和运输知之甚少。该项目的总体目标是更好地了解工程纳米颗粒与微生物群落之间的相互作用，并使用这些信息来改善对土壤，地下水和水处理系统中纳米颗粒积累和活动性的预测。为了扩大这项工作的教育外展和实践含义，该项目包括针对本科生的研究经验以及开发互动，多媒体教学工具，这些工具将纳入由科学，技术，工程，工程和数学多样性的工程教育和外展教育中心以及工程教育中心和中心开展的教育和培训计划。在过去的十年中，进行的研究极大地提高了我们对纳米颗粒聚集和活动性的了解，并在各种环保条件下进行了介绍，并为能够描述纳米颗粒运输和在膜，过滤床和水上材料中描述纳米颗粒运输和保留率的数学模型的发展提供了信息。同时，许多研究探讨了纳米颗粒对细胞系统，水生无脊椎动物，鱼类和微生物的影响。该研究项目的总体目标是结合这两条研究线，以研究纳米生物相互作用在多孔介质中纳米颗粒命运和运输的作用。该研究项目是将纳米颗粒表征和生物实验与动态转运研究耦合，以量化纳米生物相互作用对含水层材料和自然土壤中代表性工程纳米材料（氧化铁和氧化镁）的迁移率和命运的影响。 Research activities are being structured around three tasks, (1) determination of nanoparticle deposition and release as a function of surface coating aging, biopolymers, and solution composition using a quartz crystal microbalance, (2) assessment of the effects of biopolymers on nanomaterial mobility and retention in abiotic columns, and (3) measurement of nanoparticle transport, deposition, and aging in aerobic and厌氧生物活性土壤柱。这项研究的新方面包括将微生物粒子相互作用与运输直接耦合，对生物相关沉积的评估，使用流通扫描电子显微镜和冷冻传递电子显微镜技术直接观察纳米颗粒行为。从这项工作中获得的结果被用来探索微生物群落在衰老的纳米颗粒表面涂层中的作用，以及滤波器成熟和位点阻断对纳米颗粒附着过程的影响以及环境中的迁移率。为了将这项工作的影响扩展到传统的学术界限，将研究成果纳入基于模型的教程，简短的教学视频以及说明性的案例研究和建模工具中，这些工具将通过协作并与科学技术，工程技术和数学多样性中心一起参与倡议，以及在Tufts的工程桥梁，以及Tufts的工程桥梁，以及Engineering Engineering和Engineering Engineering和Brown的工程学中心。

项目成果

Effect of rhamnolipid biosurfactant on transport and retention of iron oxide nanoparticles in water-saturated quartz sand

• DOI: 10.1039/d0en01033b
• 发表时间: 2021-01
• 期刊: Environmental science. Nano
• 作者: Shuchi Liao;A. Ghosh;M. Becker;L. Abriola;Natalie L. Cápiro;J. Fortner;K. Pennell

Delineating the Relationship between Nanoparticle Attachment Efficiency and Fluid Flow Velocity

• DOI: 10.1021/acs.est.0c02669
• 发表时间: 2020-11-03
• 期刊: ENVIRONMENTAL SCIENCE & TECHNOLOGY
• 影响因子: 11.4
• 作者: Kim, Changwoo;Pennell, Kurt D.;Fortner, John D.
• 通讯作者: Fortner, John D.