Hydraulic Fracturing of Controlled Release Oxidants for Remediation of Low Permeability Zones

控释氧化剂水力压裂修复低渗透区

• 批准号: 10225761
• 负责人: Alexis Wells Carpenter
• 金额: $ 43.97万
• 依托单位: AXNANO, LLC
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-17 至 2022-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10225761
• 关键词: Address; Affect; Amendment; American; Area; Behavior; Biological Models; Case Study; Chemicals; Chronic; Collaborations; Complex; Computer Models; Coupling; Data; Databases; Development; Environment; Environmental Engineering technology; Environmental Pollution; Evaluation; Family; Formulation; Fracture; Future; Geology; Hazardous Chemicals; Hazardous Waste Sites; Headache; In Situ; Indoor Air Quality; Industry; Infrastructure; Injectable; Injections; Intellectual Property; Lead; Legal patent; Liquid substance; Measures; Methods; Modeling; Monitor; North Carolina; Oxidants; Pain; Performance; Permeability; Phase; Positioning Attribute; Process; Program Development; Radial; Reagent; Risk; Scheme; Secure; Site; Small Business Innovation Research Grant; Societies; Soil; Source; South Carolina; Surface; Surveys; Tail; Techniques; Technology; Testing; TimeLine; Water; chemical release; chemical stability; clay; commercialization; contaminated drinking water; controlled release; cost; design; drinking water; exposed human population; field study; global environment; ground water; improved; innovation; interest; manufacturing process; oxidation; programs; prototype; remediation; success; technology development; transmission process; uptake; vapor intrusion

Project Summary/Abstract AxNano, LLC SBIR Fasttrack 2019 The EPA estimates that one out of every four Americans lives within three miles of a hazardous waste site. To meet the growing need for remediating these contaminated sites, the US remediation market has been increasing steadily since 2009, averaging 2-3% increases per year. The global environmental remediation technology market is forecasted to expand to $80.5 billion in 2019. Remediation of contaminated sites can cost upwards of millions of dollars and can last for decades, especially in challenging geological settings such as low permeability (low-k) zones (e.g., clay and bedrock). Sites where contaminants are concentrated in low permeability zones are a particular industry headache as these areas can serve as sub-surface “source zones” providing slow release of contaminants into transmissive zones for decades of longer. Traditional, liquid-phase remediation injections that are successfully used in more permeable areas, when applied to low-k zones often result in only partial clean-up followed by chronic site management. Costly re-applications to address rebounding (increases in contaminant concentration following remediation) and tailings (persistent non-zero contaminant levels) are one of the biggest pain-points for environmental engineers. These rebounding and tailings lead to increase liability, increased remediation cost, and long drawn-out remediation schemes. AxNano, in collaboration with North Carolina A&T, has specially formulated their patented controlled release technology to address these persistent low-k zones. RemRx® CRI, controlled release injectant, can be emplaced into low k zones by hydraulic fracturing and provide sustained levels of ISCO reagents directly into the trapped contaminated area with one/few applications to address these issues of rebounding and tailings. AxNano has established prototypes and preliminary studies to support a Fasttrack SBIR program. Phase I of the program will support the development RemRx® CRI, through bench-scale testing of prototypes in low- k zone 2-D flow chambers and radius of influence estimation by computational modeling. Phase II aims to pilot- scale demonstrate manufacturing the Phase I-validated MVP and field test at two sites in the Piedmont Region. Field demonstrations will include comparison to straight oxidant performance. Data from pilot-scale demonstration and computational modeling will be used to design full-scale deployments. AxNano will design a full scale manufacturing process to support transition of the RemRxTM CRI technology to future large scale deployment. This technology development program leverages a unique intellectual property position to develop this new RemRxTM family of products. The remediation and broader water/wastewater markets are complex, making market uptake of new remediation technologies difficult. However, controlled release ISCO agents are of strong interest. The AxNano Team is committed to achieving the successful commercialization of this high-impact technology.

项目摘要/摘要 AxNano, LLC SBIR Fasttrack 2019 美国环保署估计，四分之一的美国人生活在距离危险废物三英里以内的地方 为了满足修复这些污染场地日益增长的需求，美国修复市场一直在发展。 自2009年以来稳步增长，平均每年增长2-3%。 预计 2019 年技术市场将扩大至 805 亿美元。污染场地的修复可能会花费大量成本 价值超过数百万美元，可以持续数十年，特别是在具有挑战性的地理环境中，例如低海拔地区 渗透性（低 k）区域（例如粘土和基岩）。 渗透性区域是一个特别令人头痛的行业，因为这些区域可以作为地下“源区” 将污染物缓慢释放到传输区域长达数十年。 当经常应用于低 k 区域时，修复注入已成功用于渗透性较高的区域 导致只能进行部分清理，然后需要进行长期的现场管理来解决这一问题，成本高昂。 反弹（修复后污染物浓度增加）和尾矿（持续非零 污染物水平）是环境工程师最大的痛点之一。 尾矿导致责任增加、修复成本增加以及修复计划旷日持久。 与 North Carolina A&T 合作，专门配制了其专利控释技术 为了解决这些持续的低 k 区域问题，可以将 RemRx® CRI 控释注射剂注入低 k 区域。 通过水力压裂将 ISCO 试剂直接注入陷阱中并提供持续水平的 ISCO 试剂 污染区域只需应用一次/少量即可解决反弹和尾矿问题。 AxNano 已建立原型和初步研究来支持 Fasttrack SBIR 计划。 该计划的 I 将通过低功耗原型的实验室规模测试来支持 RemRx® CRI 的开发。 k 区二维流动室和通过计算建模估计影响半径第二阶段旨在试点。 规模展示了第一阶段验证的 MVP 的制造，并在皮埃蒙特地区的两个地点进行了现场测试。 现场演示将包括与中试规模的直接氧化剂性能的比较。 演示和计算建模将用于设计 AxNano 的全面部署。 全尺寸制造工艺，支持 RemRxTM CRI 技术向未来大规模过渡 部署。 该技术开发计划利用独特的知识产权地位来开发这一技术 新的 RemRxTM 系列产品的修复和更广泛的水/废水市场非常复杂，使得 市场接受新的修复技术很困难，但是，控释ISCO剂的作用很强。 AxNano 团队致力于实现这一高影响力的成功商业化。 技术。