U.S.-Korea Cooperative Research: Electrokinetic-Enhanced Bioremediation of Metal-Contaminated Soils

美韩合作研究：金属污染土壤的电动增强生物修复

• 批准号: 0425994
• 负责人: Krishna Reddy
• 金额: $ 1.1万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-15 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0425994&HistoricalAwards=false
• 关键词: U.S.; Korea; Cooperative; Research; Electrokinetic

OISE 0425994Krishna Reddy, University of Illinois at Chicago This award supports an U.S.-Korea research collaboration involving Professor Krishna Reddy and a graduate student of the University of Illinois at Chicago and Dr. Ji-Won Yang and others of the National Lab for Environmental Remediation of the Korea Advanced Institute of Science & Technology (KAIST). They propose to develop an innovative integrated electrokinetic-bioremediation technology to remediate heavy metal contamination in soils. The Korean team has conducted extensive research on soil and groundwater remediation technologies and has expertise on bioremediation of contaminated soils. They will study biological transformation of heavy metals in conjunction with the use of electrokinetics as delivery system. The PI has extensive research experience with in-situ remediation of contaminated sites and in particular with electrokinetic remediation of soils; he will focus on the electrokinetic aspects of the technology.Scientific MeritHeavy metal contamination is prevalent at numerous sites in the United States and Korea. The specific objectives of the proposed research are (1) investigate biological transformations of heavy metals in soils, (2) investigate electrokinetic transport of nutrients and microorganisms in soils, and (3) investigate biological immobilization of heavy metals in soils through electrokinetically enhanced biostimulation and bioaugmentation. Several fundamental aspects of this technology for the removal of toxic hydrophobic organic compounds from soils are being addressed under Professor Reddy's current NSF research support from the Division of Civil and Mechanical Engineering. CMS-0100073. These objectives will be accomplished by laboratory experiments: (1) to characterize microbial transformation of heavy metals in soils; (2) to assess electrokinetic delivery of nutrients and microbes under different soil conditions; and (3) to investigate efficiency of integrated electrokinetic-enhanced bio-immobilization of heavy metals in different soil conditions. The experimental results will be utilized to develop guidelines for the design and implementation of field-scale systems and to assess long-term implications of the treatment technology. The combined relevant expertise of the US and Korean researchers will facilitate successful completion of the proposed research. Broader Impacts Electrokinetic bio-immobilization has great potential to remediate contaminated sites under difficult subsurface conditions. Numerous sites in the United States and in Korea are contaminated with toxic heavy metals and they require urgent cleanup to protect public health and the environment. Employing natural biological processes is finding widespread public support. Unfortunately, most contaminated sites suffer from the poor bioavailability and mobility of contaminants, as well as increased toxicity. The proposed research will determine the ability of this process to immobilize heavy metals. It also establishes a new collaboration between US and Korean researchers and brings together the relevant expertise to develop an innovative hazardous waste site cleanup technology. Integrated electrokinetic-bioremediation technology has potential to be a simple, efficient and cost-effective in-situ technology to remediate contaminated sites in many countries. Being an in-situ method, this technology can reduce site disturbance during remedial operations, thereby eliminating contaminant exposure of the surrounding environment and the public. Korean participation will be supported by the Korean Science and Engineering Foundation (KOSEF). This project will provide international research training and experience to the PI and to a U.S. graduate student.

OISE 0425994Krishna Reddy，伊利诺伊大学芝加哥分校 该奖项支持美韩研究合作，涉及伊利诺伊大学芝加哥分校的 Krishna Reddy 教授和研究生以及 Ji-Won Yang 博士和美国国家环境修复实验室的其他人韩国科学技术院 (KAIST)。他们建议开发一种创新的集成电动生物修复技术来修复土壤中的重金属污染。韩国团队对土壤和地下水修复技术进行了广泛的研究，并在污染土壤的生物修复方面拥有专业知识。他们将结合动电学作为输送系统来研究重金属的生物转化。首席研究员在污染场地原位修复，特别是土壤动电修复方面拥有丰富的研究经验；他将重点研究该技术的电动方面。科学价值美国和韩国的许多场所都普遍存在重金属污染。拟议研究的具体目标是（1）研究土壤中重金属的生物转化，（2）研究土壤中养分和微生物的动电运输，以及（3）通过动电增强的生物刺激和作用研究土壤中重金属的生物固定化。生物强化。这项从土壤中去除有毒疏水性有机化合物的技术的几个基本方面正在雷迪教授当前的国家科学基金会土木和机械工程部的研究支持下得到解决。 CMS-0100073。这些目标将通过实验室实验来实现：（1）表征土壤中重金属的微生物转化； (2) 评估不同土壤条件下养分和微生物的动电输送； (3) 研究不同土壤条件下重金属集成动电增强生物固定化的效率。实验结果将用于制定现场规模系统的设计和实施指南，并评估处理技术的长期影响。美国和韩国研究人员的相关专业知识相结合将有助于成功完成拟议的研究。 更广泛的影响动电生物固定在修复困难的地下条件下的污染场地方面具有巨大的潜力。美国和韩国的许多地点都受到有毒重金属的污染，需要紧急清理以保护公众健康和环境。利用自然生物过程正在获得公众的广泛支持。不幸的是，大多数污染场地的污染物生物利用度和流动性较差，并且毒性增加。拟议的研究将确定该过程固定重金属的能力。它还在美国和韩国研究人员之间建立了新的合作关系，汇集了相关专业知识来开发创新的危险废物现场清理技术。集成动电生物修复技术有潜力成为一种简单、高效且具有成本效益的原位技术，可用于修复许多国家的污染场地。作为一种原位方法，该技术可以减少修复作业过程中对现场的干扰，从而消除周围环境和公众的污染物暴露。韩国的参与将得到韩国科学与工程基金会（KOSEF）的支持。该项目将为 PI 和美国研究生提供国际研究培训和经验。