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: 9908808
• 负责人: Alexis Wells Carpenter
• 金额: $ 12.46万
• 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 2020-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9908808
• 关键词: Address; Affect; Amendment; American; Area; Behavior; Biological Models; Case Study; Chemicals; Chronic; Collaborations; Complex; Computer Simulation; Coupling; Data; Databases; Development; Environment; Environmental Engineering technology; Environmental Pollution; Evaluation; Family; Formulation; Fracture; Future; Geology; Hazardous Chemicals; Hazardous Waste; 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; i(19); improved; innovation; interest; manufacturing process; off-patent; oxidation; programs; prototype; remediation; success; technology development; transmission process; uptake; vapor intrusion

Project Summary/Abstract AxNano, LLC SBIR Fasttrack 2019 1 The EPA estimates that one out of every four Americans lives within three miles of a hazardous waste 2 site. To meet the growing need for remediating these contaminated sites, the US remediation market has been 3 increasing steadily since 2009, averaging 2-3% increases per year. The global environmental remediation 4 technology market is forecasted to expand to $80.5 billion in 2019. Remediation of contaminated sites can cost 5 upwards of millions of dollars and can last for decades, especially in challenging geological settings such as low 6 permeability (low-k) zones (e.g., clay and bedrock). Sites where contaminants are concentrated in low 7 permeability zones are a particular industry headache as these areas can serve as sub-surface “source zones” 8 providing slow release of contaminants into transmissive zones for decades of longer. Traditional, liquid-phase 9 remediation injections that are successfully used in more permeable areas, when applied to low-k zones often 10 result in only partial clean-up followed by chronic site management. Costly re-applications to address 11 rebounding (increases in contaminant concentration following remediation) and tailings (persistent non-zero 12 contaminant levels) are one of the biggest pain-points for environmental engineers. These rebounding and 13 tailings lead to increase liability, increased remediation cost, and long drawn-out remediation schemes. AxNano, 14 in collaboration with North Carolina A&T, has specially formulated their patented controlled release technology 15 to address these persistent low-k zones. RemRx® CRI, controlled release injectant, can be emplaced into low k 16 zones by hydraulic fracturing and provide sustained levels of ISCO reagents directly into the trapped 17 contaminated area with one/few applications to address these issues of rebounding and tailings. 18 AxNano has established prototypes and preliminary studies to support a Fasttrack SBIR program. Phase 19 I of the program will support the development RemRx® CRI, through bench-scale testing of prototypes in low- 20 k zone 2-D flow chambers and radius of influence estimation by computational modeling. Phase II aims to pilot- 21 scale demonstrate manufacturing the Phase I-validated MVP and field test at two sites in the Piedmont Region. 22 Field demonstrations will include comparison to straight oxidant performance. Data from pilot-scale 23 demonstration and computational modeling will be used to design full-scale deployments. AxNano will design 24 a full scale manufacturing process to support transition of the RemRxTM CRI technology to future large scale 25 deployment. 26 This technology development program leverages a unique intellectual property position to develop this 27 new RemRxTM family of products. The remediation and broader water/wastewater markets are complex, making 28 market uptake of new remediation technologies difficult. However, controlled release ISCO agents are of strong 29 interest. The AxNano Team is committed to achieving the successful commercialization of this high-impact 30 technology.

项目摘要/摘要AxNano，LLC SBIR FastTrack 2019 环保局估计，每四个美国人中就有一个生活在危险废物的三英里以内。 2个站点。为了满足日益增长的修复这些受污染场地的需求，美国的修复市场一直在 3自2009年以来稳步增长，平均每年增长2-3%。全球环境修复 4预计2019年技术市场规模将扩大至805亿美元。修复受污染场地的费用可能会很高 5美元以上，可持续数十年，特别是在具有挑战性的地质环境中，如Low 6渗透率(低k)带(如粘土和基岩)。污染物集中在低污染地区的地点 渗透带是一个特别令人头疼的行业问题，因为这些地区可以作为地下“源区”。 8提供长达数十年的污染物向传播区的缓慢释放。传统的，液相 9在渗透率较高的地区成功使用的补救注射，当应用于低K区时 10导致只进行部分清理，然后进行长期的现场管理。要解决成本高昂的重新申请问题 11反弹(修复后污染物浓度增加)和尾矿(持续非零 12个污染物水平)是环境工程师最大的痛点之一。这些篮板和 13尾矿导致责任增加，补救成本增加，补救计划旷日持久。AxNano， 14与北卡罗来纳州A&T合作，特别制定了他们的专利控制释放技术 15以解决这些持久的低k区问题。RemRx®CRI，控释注射剂，可植入低k 通过水力压裂和提供持续水平的Isco试剂直接进入被困的16个区 17个污染区域，一次/几次应用，以解决这些反弹和尾矿问题。 18 AxNano已经建立了原型和初步研究，以支持FastTrack SBIR计划。阶段 该计划的19 i将支持RemRx®CRI的开发，通过在低成本环境下对原型进行小规模测试。 通过计算模型估算了20k区二维流动腔和影响半径。第二阶段旨在试行- 21在皮埃蒙特地区的两个地点展示了第一阶段验证的MVP的制造和现场测试。 22现场演示将包括与直接氧化剂性能的比较。来自试点规模的数据 23将使用演示和计算建模来设计全面部署。AxNano将设计 24支持RemRxTM CRI技术向未来大规模过渡的全规模制造工艺 25部署。 26该技术开发计划利用独特的知识产权地位来开发这一 27个新的RemRxTM产品系列。修复和更广泛的水/废水市场是复杂的，使 28市场难以接受新的补救技术。然而，Isco控释剂具有很强的 29%的利息。AxNano团队致力于实现这种高影响力的成功商业化 30%的技术。