3D printing of reactive porous media to enhance understanding of porosity-permeability evolution

活性多孔介质的 3D 打印可增强对孔隙度-渗透率演变的理解

• 批准号: 2025626
• 负责人: Lauren Beckingham
• 金额: $ 33.18万
• 依托单位: Auburn University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2025626&HistoricalAwards=false
• 关键词: 3D; printing; reactive; porous; media

Geochemical reactions play an important role in natural and engineered systems, occurring as part of natural weathering processes, at contaminated subsurface and surface sites, and in geologic CO2 sequestration, radioactive waste disposal, and other engineered subsurface systems. Understanding the impact of these reactions on flow and transport is critical to assessing long-term evolution of these systems, including risks and adverse environmental impacts. However, current understanding of the impact of mineral dissolution and precipitation reactions on porous media properties is limited. These systems are difficult to evaluate with laboratory experiments because natural samples are highly heterogenous and different results can be obtained for even replicate experiments with samples from the same location. In this work, the use of 3D printing to create replicable, reactive porous media samples will be explored and used to enhance understanding of reactions and permeability evolution in porous media. Observations will be leveraged to generate new porosity-permeability relationships with improved predictive capabilities. Advancements in understanding from this work will generate knowledge needed to improve engineering design of subsurface energy systems, enhance understanding of contaminant fate and transport in subsurface systems, and improve understanding of near surface weathering processes. This work will encompass a range of broader impacts ranging from K-12 outreach, graduate student education, and enhancing diversity in STEM students in addition to increasing understanding of transport and reactions in natural systems. Undergraduate and graduate students from underrepresented groups will be recruited for this project and included in outreach activities aimed to enhance interest and diversity in STEM fields.The goal of this work is to enhance understanding of mineral dissolution and precipitation reactions and impacts on porosity and permeability in porous media. The highly heterogenous nature of porous media complicates experimental efforts and limits predictive capabilities. Critically, this proposal will utilize 3D printing to fabricate replicate reactive porous media that maintain the physical heterogeneities of real porous media to enhance understanding of the impact of variations in porous media structures and the distribution of mineral reactions on where mineral reactions occur and, consequently, changes in porosity and permeability. The approach will be to create a series of 3D printed “reactive” porous media and carry out replicate laboratory mineral dissolution and precipitation experiments on these samples, characterizing permeability evolution and using 3D imaging to identify the time lapsed evolution of porosity. Experimental observations will be leveraged to develop new macroscopic porosity-permeability relationships with improved predictive capabilities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

地球化学反应和自然和发动机系统是自然风化过程的一部分，在地质二氧化碳隔离中以及其他工程的地下系统中，对流动和运输的反应行为对于评估长期的反应至关重要。矿物质溶解的影响和沉淀对多孔介质特性的影响是有限的。可复制的，反应性的多孔样品将在多孔培养基中的反应和渗透率进化中进行探索。系统，并改善了近表面风化的过程。这项工作的目标是增强矿物质溶解和精确的影响，对多孔培养基中多孔培养基的高度异质性质的高度异源性预测，这种令人震惊为了增强对多孔培养基结构的变化的影响，矿物反应对矿物反应的发生的分布以及孔隙率和孔隙性的变化将创建一系列3D打印的“反应性”多孔介质在样品上复制实验室矿物矿物矿石溶解和降水实验，表征渗透性并使用3D成像来确定实验观察的时间滞后时间，将利用实验性观察的时间，以发展孔隙率 - 疏松性关系，并与改进的预测相反映了NSF'SF'Story Mission Mission Mission S.并被认为是通过使用Toundation的智力优点和更广泛影响的审查标准进行评估来获得支持的。

项目成果

Material Design for Enhancing Properties of 3D Printed Polymer Composites for Target Applications

• DOI: 10.3390/technologies10020045
• 发表时间: 2022-03
• 期刊: Technologies
• 影响因子: 3.6
• 作者: Vinita V. Shinde;Yuyang Wang;M. Salek;M. Auad;L. Beckingham;B. Beckingham

Resin based 3D printing for fabricating reactive porous media

用于制造反应性多孔介质的树脂基 3D 打印

• DOI: 10.1016/j.matlet.2022.132469
• 发表时间: 2022
• 期刊: Materials Letters
• 影响因子: 3
• 作者: Fahim Salek, Md;Shinde, Vinita V.;Beckingham, Bryan S.;Beckingham, Lauren E.
• 通讯作者: Beckingham, Lauren E.