CAREER: Development of traceable metal oxide nanoparticles for examining environmental transport and fate
职业:开发可追踪的金属氧化物纳米粒子,用于检查环境传输和命运
基本信息
- 批准号:1255020
- 负责人:
- 金额:$ 36.26万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2013
- 资助国家:美国
- 起止时间:2013-06-01 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
CBET - 1255020Intellectual merit: Many challenges face the emerging field of nanotechnology. Engineers, scientists and policy makers must balance the promise of beneficial nano-enabled products and applications with the potential negative impacts resulting from the release of these novel materials into the environment. The ability to detect, quantify and track engineered nanoparticles (ENPs) in the environment is a key to understanding the environmental implications of these materials. At present, there is a lack of suitable methods for detecting ENPs in environmental matrices. For some classes of nanomaterials such as metal oxides, a major challenge is simply distinguishing between ENPs and the natural background concentration of the element(s) in question. Given this challenge, the PI hypothesizes that labeling ENPs with elements of low background concentration will facilitate their sensitive and unambiguous detection in the environment. This hypothesis will be tested through the completion of three tasks: (1) synthesis of labeled ENPs using doping and/or core/shell techniques; (2) characterization of labeled ENP physicochemical properties and comparison with unlabeled ENPs; and (3) spike and recovery of labeled ENPs from representative environmental matrices using ICP-MS and Instrument Neutron Activation Analysis (INAA), an analytical technique with high sensitivity and low susceptibility to matrix effects.The complex, multi-faceted and multi-disciplinary challenges facing the emerging field of nanotechnology environmental health and safety also highlight the need for a workforce of scientists and engineers with excellent critical thinking skills and a firm grasp of the scientific method. There is a need for innovative teaching methods that focus on this type of development. Integrated with the proposed research, the PI will develop, implement and assess a novel virtual laboratory pedagogy for environmental engineers focused on ENP removal from water. The industrially-situated, problem-based instructional design centered on the iterative process of designing experiments, running virtual trials, and analyzing data will facilitate the development of key skills and knowledge.Broader Impact: This research will result in the development of a unique method to detect and quantify ENPs in environmental matrices. This work is transformative because it results in a tool that will enable the work of many others studying environmental transport, fate, toxicity, modeling and risk assessment of ENPs. The larger body of work made possible by the project, both by the PI and by many others, will likely facilitate the establishment of real science-based regulations for the safe handling of ENPs.The development of a virtual laboratory for environmental engineers has tremendous potential to improve environmental engineering education both at OSU and at institutions across the country. Appropriately balancing the benefits of nanotechnology with the risks to the environment is a key challenge and preparing engineers for these types of open-ended and ambiguous tasks is critical for success. The work proposed here integrates fundamental scientific inquiry and novel tool development with the development of novel pedagogy for training tomorrow's engineers. The proposed virtual laboratory will expose students to the emerging field of nanotechnology environmental health and safety while developing the the broad and universal skills, knowledge and expertise necessary to tackle these emerging challenges.Other broader impacts include the formation of human capital through the education of at least two graduate students in nanomaterial synthesis, characterization, and presence/behavior in the environment. In addition, the PI will strengthen the educational experience at all levels in the School of Chemical, Biological and Environmental Engineering at OSU through 1) the incorporation of research findings into undergraduate and graduate courses and 2) providing research experiences for high school and undergraduate students through established programs at OSU (Johnson Scholars, ASE and SESEY). These students will become an integral part of the research team on the work in question.Results of the experimental and educational research will be disseminated at national and international conferences and top journals in the field of environmental engineering and engineering education will be targeted for wide publication. The developed virtual laboratory pedagogy will be made available for use by other engineering institutions in the U.S. and abroad.
CBET -1255020智力优点:纳米技术的新兴领域面临许多挑战。工程师、科学家和政策制定者必须平衡有益的纳米产品和应用的前景与这些新材料释放到环境中所造成的潜在负面影响。检测、量化和跟踪环境中的工程纳米颗粒(ENPs)的能力是理解这些材料对环境影响的关键。目前,还缺乏合适的方法检测环境基质中的ENPs。对于某些类别的纳米材料,如金属氧化物,一个主要的挑战是简单地区分ENPs和所讨论的元素的自然背景浓度。鉴于这一挑战,PI假设用低背景浓度的元素标记ENPs将有助于在环境中进行灵敏和明确的检测。本论文通过三个方面的工作来验证这一假设:(1)利用掺杂和/或核/壳技术合成标记的ENPs;(2)表征标记的ENPs的物理化学性质并与未标记的ENPs进行比较;和(3)使用ICP-MS和仪器中子活化分析(INAA)从代表性环境基质中掺入和回收标记的ENP,一种具有高灵敏度和低基体效应敏感性的分析技术。该络合物,多方面的,多方面的,纳米技术、环境健康和安全这一新兴领域所面临的学科挑战也突出表明,需要一支具有出色的批判性思维能力和牢固掌握科学方法有必要创新的教学方法,侧重于这种类型的发展。与拟议的研究相结合,PI将为环境工程师开发,实施和评估一种新的虚拟实验室教学法,重点是从水中去除ENP。以设计实验、运行虚拟试验和分析数据的迭代过程为中心的工业情境、基于问题的教学设计将促进关键技能和知识的发展。更广泛的影响:这项研究将导致开发一种独特的方法来检测和量化环境矩阵中的ENPs。这项工作是变革性的,因为它产生了一种工具,将使许多其他研究环境迁移,归宿,毒性,建模和风险评估的ENPs的工作。PI和许多其他人的项目所做的大量工作将可能促进建立真实的基于科学的ENPs安全处理法规。环境工程师虚拟实验室的发展具有巨大的潜力,可以改善俄勒冈州立大学和全国各地机构的环境工程教育。适当地平衡纳米技术的好处与对环境的风险是一个关键的挑战,为这些类型的开放式和模糊的任务准备工程师是成功的关键。这里提出的工作整合了基本的科学探究和新的工具开发与新的教学法的发展,以培养未来的工程师。拟议的虚拟实验室将使学生接触到纳米技术环境健康和安全的新兴领域,同时发展广泛和通用的技能,知识和专业知识,以应对这些新兴的挑战。其他更广泛的影响包括通过至少两名研究生在纳米材料合成,表征和存在/行为的教育形成人力资本。此外,PI将通过1)将研究成果纳入本科和研究生课程,2)通过OSU(约翰逊学者,ASE和SESEY)的既定计划为高中和本科生提供研究经验,加强OSU化学,生物和环境工程学院各级教育经验。这些学生将成为相关工作研究团队的一部分。实验和教育研究的结果将在国家和国际会议上传播,并将在环境工程和工程教育领域的顶级期刊上广泛发表。开发的虚拟实验室教学法将提供给美国和国外的其他工程机构使用。
项目成果
期刊论文数量(0)
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Jeffrey Nason其他文献
Jeffrey Nason的其他文献
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{{ truncateString('Jeffrey Nason', 18)}}的其他基金
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合作研究:研究启动:虚拟和物理实验室的补充功能,用于开发工程认知实践
- 批准号:
2204933 - 财政年份:2022
- 资助金额:
$ 36.26万 - 项目类别:
Standard Grant
Determining organic copper speciation in stormwater and wastewater to improve treatment and regulation
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2230254 - 财政年份:2022
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$ 36.26万 - 项目类别:
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Interactions between engineered nanoparticles in aquatic systems: Roles of engineered capping agents and natural organic matter
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- 批准号:
1067794 - 财政年份:2011
- 资助金额:
$ 36.26万 - 项目类别:
Standard Grant
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