Novel Photocatalytic Method for Site Remediation

现场修复的新型光催化方法

• 批准号: 6582805
• 负责人: JAMES R KITTRELL
• 金额: $ 6.34万
• 依托单位: KSE, INC.
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6582805
• 关键词: air pollution control; air treatment; biotransformation; catalyst; environmental contamination; hazardous substances; metals; method development; photochemistry; photolysis; ultraviolet radiation; waste disposal

DESCRIPTION (provided by applicant): The nation has an ongoing need to reduce exposure of the public to hazardous wastes. Novel remediation technologies can provide an effective method to reduce such hazardous waste exposure. Although health issues require prompt cleanup of abandoned and uncontrolled hazardous waste sites, the high cost of remediation often delays the project. The cost of remediation of such sites is estimated at billions of dollars annually over the next several decades. It is imperative that more cost-effective technologies be developed to reduce the societal cost of remediation of these hazardous waste sites. The goal of the proposed research program is to demonstrate the technical feasibility of a new remediation technology, using novel photocatalysts designed to destroy the hazardous waste contaminants. This new photocatalytic technology would be employed with existing technologies which are effective at groundwater and soil remediation, but which otherwise would result in hazardous air emissions. Evidence suggests that this technology can reduce remediation costs by an order of magnitude over those of current technology. The research plan includes development of novel photocatalysts and reactor systems for an Adsorption-Integrated-Reaction (AIR) technology, providing photocatalysts which destroy volatile organic compounds and which exhibit high activity and long operating lifetimes. KSE, Inc. has developed photocatalysts which are orders of magnitude more active than conventional titania photocatalysts. The new catalysts are also more selective and more resistant to deactivation. The research program will consist of synthesis of new catalyst compositions, kinetic studies on representative classes of volatile organic compounds, and design and economic studies which establish the feasibility of the concept. It is anticipated that an effective remediation technology will be developed, providing a cost-effective tool for hazardous waste site remediation.

描述(由申请人提供)：国家有一个持续的需要，以减少公众对危险废物的暴露。新的修复技术可以提供一种有效的方法来减少这种危险废物的暴露。尽管健康问题需要迅速清理废弃和不受控制的危险废物场地，但补救的高昂成本往往会推迟项目。在接下来的几十年里，这类遗址的补救费用估计每年高达数十亿美元。当务之急是开发更具成本效益的技术，以降低修复这些危险废物场地的社会成本。拟议研究计划的目标是证明一种新的修复技术的技术可行性，该技术使用旨在破坏危险废物污染物的新型光催化剂。这种新的光催化技术将与现有的技术一起使用，这些技术在地下水和土壤修复方面有效，但否则将导致有害的空气排放。有证据表明，这项技术可以比目前的技术降低补救成本一个数量级。该研究计划包括开发新型光催化剂和用于吸附-集成反应(AIR)技术的反应器系统，提供能够破坏挥发性有机化合物并具有高活性和长使用寿命的光催化剂。KSE公司已经开发出比传统二氧化钛光催化剂活性高几个数量级的光催化剂。新的催化剂也更具选择性，更能抵抗失活。研究计划将包括合成新的催化剂组合物，对具有代表性的挥发性有机化合物进行动力学研究，以及确定这一概念的可行性的设计和经济研究。预计将开发一种有效的补救技术，为危险废物场地补救提供具有成本效益的工具。