Continued Development of Photoelectrocatalytic Oxidation for Treating Gasoline Co

光电催化氧化处理汽油的持续发展

• 批准号: 8546464
• 负责人: TERENCE PATRICK BARRY
• 金额: $ 3.01万
• 依托单位: AQUAMOST, INC.
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8546464
• 关键词: Acute; Air; Aromatic Hydrocarbons; Benzene; Biodegradation; Carbon; Characteristics; Chemicals; Chemistry; Complement; Country; Data; Development; Devices; Effectiveness; Electrodes; Engineering; Environmental Health; Gasoline; Goals; Health; Human; Isomerism; Laboratories; Longevity; Maintenance; Marketing; Performance; Phase; Precipitation; Process; Pump; Resistance; Resources; Risk; Sampling; Series; Site; System; Technology; Testing; Toluene; Toxic effect; Water; Water Pollutants; Water Supply; Work; Xylene; alternative treatment; base; commercialization; cost; design; drinking water; improved; instrument; meetings; methyl tert-butyl ether; oxidation; phase 1 study; pollutant; remediation; water solubility; water treatment

DESCRIPTION (provided by applicant): AquaMost is developing a water treatment device based on a technology called photoelectrocatalytic oxidation (PECO). The focus for this project is using PECO systems to treat groundwater contaminated with organic pollutants released from leaking underground storage tanks. Two chemical classes are of particular concern: (1) aromatic hydrocarbons, particularly the BTEX chemicals benzene, ethyl benzene, toluene, and three isomers of xylene, and (2) fuel oxygenates, particularly methyl tert-butyl ether (MTBE). These chemicals are a significant risk to human health. Both chemical classes have acute and long-term toxic effects, and may be carcinogenic. For these reasons, considerable federal, state, and private resources are being expended to remove these chemicals from contaminated groundwater sites throughout the country. Several unique chemical characteristics of MTBE (e.g., high water solubility, high polarity, resistance to biodegradation) make it very difficult to remove from water using existing remediation technologies. The specific objectives of the Phase II project are to: (1) conduct long-term (> 6 months) field trials with commercial-scale PECO systems at several contaminated sites that differ with respect to contaminant levels, groundwater chemistry, etc. to obtain data on the long-term efficacy and performance of these systems, and (2) enhance the size and/or performance of the systems so that they can treat contaminated groundwater in a single pass at a flow rate of 5 to 10 gal/min (the current embodiment works at ~1 gal/min). Field tests will be performed at two primary sites and several secondary sites in conjunction with two environmental remediation companies that will serve as subcontractors on this project. These tests will help to answer several questions about the effectiveness of these PECO systems, including: (1) how will the technology perform under different field conditions? (2) What is the longevity and durability of the PECO unit electrodes under practical conditions? (3) How well does the technology enhance and complement current groundwater remediation technologies (e.g., activated carbon, air stripping, etc.)? (4) What are the operational and maintenance costs of using PECO to remediate contaminated groundwater? The PECO systems will be continually reengineered throughout these trials until an effective, robust, and economical commercial product is available for the market.

描述（由申请人提供）：Aquamost正在基于一种称为光电催化氧化（PECO）的技术开发水处理设备。该项目的重点是使用PECO系统来治疗被泄漏地下储罐释放的有机污染物污染的地下水。两种化学类别特别关注：（1）芳族烃，尤其是BTEX化学物质苯，乙烯，甲苯和二甲苯的三个异构体，以及（2）燃料氧化，尤其是甲基丁基丁基醚（MTBE）。这些化学物质是人类健康的重大风险。两种化学类别都有急性和长期毒性作用，可能是致癌的。由于这些原因，正在花费大量的联邦，州和私人资源来从全国各地污染的地下水遗址中删除这些化学药品。 MTBE的几种独特的化学特性（例如，高水溶性，高极性，对生物降解的耐药性）使使用现有的补救技术很难从水中取出。 The specific objectives of the Phase II project are to: (1) conduct long-term (> 6 months) field trials with commercial-scale PECO systems at several contaminated sites that differ with respect to contaminant levels, groundwater chemistry, etc. to obtain data on the long-term efficacy and performance of these systems, and (2) enhance the size and/or performance of the systems so that they can treat contaminated groundwater in a single pass at a flow rate of 5 to 10 gal/min （当前的实施例在〜1加仑/min中起作用）。现场测试将在两个主要站点和几个辅助站点与两个环境补救公司一起进行，这些公司将作为该项目的分包商。这些测试将有助于回答有关这些PECO系统有效性的几个问题，包括：（1）技术在不同的现场条件下如何执行？ （2）在实际条件下，PECO单位电极的寿命和耐用性是多少？ （3）这些技术如何增强和补充当前的地下水补救技术（例如活性炭，剥离等）？ （4）使用PECO补救受污染的地下水的运营和维护成本是多少？ PECO系统将在整个试验中不断重新设计，直到有效，健壮且经济的商业产品可用于市场。