CAREER: Interfacial Reactions Affecting Heavy Metal Fate and Transport: An Integrated Research and Education Plan

虽然之前大多数关于固定化机制的工作都集中在吸附上，但表面沉淀和共沉淀是关键的机制，在很大程度上仍未被探索。该研究将促进非均相成核和固溶过程在环境系统中的应用。对富铀和富铅纳米粒子的研究将有助于环境纳米科学和纳米技术的新兴领域。在pi的经验基础上，结合宏观、微观和分子尺度技术来阐明固水界面的反应机制，新的合作已经建立起来，通过强大的光谱技术库来追求进一步的机理见解。通过将固定化机制的研究与污染物再固定化的研究相结合，本研究弥补了基础水生化学研究与应用环境修复之间的差距。除了对污染场地管理的直接好处外，新的机理信息也将有利于水处理和腐蚀过程的研究。更广泛的影响。综合研究和教育计划将通过招募和外联活动，覆盖不同的受众，扩大代表性不足群体的参与。针对中学生和社区的水质和可持续性教育项目已经超越了大学。该项目通过交叉列出课程、组建多学科研究团队以及与化学家和地球科学家合作，发展环境工程与其他学科之间的关系，扩大了研究和教育的基础设施。科学成果将广泛传播，为环境工程、水地球化学和界面科学等领域做出贡献。将向环境工程学术界提供基于问题的学习项目和综合水生化学学习单元的新课程倡议。推进对铅和铀固定化机制的理解，通过改善现场管理和补救策略，使社会受益。环境工程专业学生的教育和对大学预科学生的推广将会对未来产生社会效益，特别是当学生们培养出终身学习的热情时。

0546219 Giammar While most prior work on immobilization mechanisms has focused on adsorption, surface precipitation and co-precipitation are crucial mechanisms that remain largely unexplored. The research will advance the application of heterogeneous nucleation and solid solution processes to environmental systems. Research on uranium- and lead-rich nanoparticles will contribute to the nascent fields of environmental nanoscience and nanotechnology. While building on the PIs experience combining macroscopic, microscopic and molecular-scale techniques to elucidate reaction mechanisms at the solid-water interface, new collaborations have been established to pursue further mechanistic insights with a powerful arsenal of spectroscopic techniques. By integrating the study of immobilization mechanisms with investigations of contaminant remobilization, the work bridges the gap between fundamental aquatic chemistry research and applied environmental remediation. In addition to the direct benefits to contaminated site management, the new mechanistic information will also benefit research on water treatment and corrosion processes.Broader Impacts. The integrated research and education plans will reach a diverse audience and broaden the participation of underrepresented groups through recruiting and outreach. Educational programs on water quality and sustainability for middle school students and the community reach beyond the university. The project expands the infrastructure for research and education by developing relationships between environmental engineering and other disciplines through the cross-listing of courses, formation of multidisciplinary research teams, and collaboration with chemists and earth scientists. The scientific results will be broadly disseminated to contribute to the fields of environmental engineering, aqueous geochemistry, and interfacial science. New course initiatives of problem-based learning projects and integrated aquatic chemistry learning units will be made available to the environmental engineering academic community. Advancing the understanding of lead and uranium immobilization mechanisms benefits society by enabling improved site management and remediation strategies. The education of environmental engineering students and outreach to pre-college students will have societal benefits extending into the future, especially when students develop a passion for lifelong learning.