Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR029361 |
Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a microfluidic cell | |
Felix Weinhardt; Holger Class; Samaneh Vahid Dastjerdi; Nikolaos Karadimitriou; Dongwon Lee; Holger Steeb | |
2021-02-03 | |
发表期刊 | Water Resources Research
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出版年 | 2021 |
英文摘要 | Enzymatically Induced Calcite Precipitation (EICP) in porous media can be used as an engineering option to achieve precipitation in the pore space, e.g., aiming at a targeted sealing of existing flow paths. This is accomplished through a porosity and consequent permeability alteration. A major source of uncertainty in modelling EICP is in the quantitative description of permeability alteration due to precipitation. This report presents methods for investigating experimentally the time‐resolved effects of growing precipitates on porosity and permeability on the pore scale, in a PDMS microfluidic flow cell. These methods include the design and production of the microfluidic cells, the preparation and usage of the chemical solutions, the injection strategy, and the monitoring of pressure drops for given fluxes for the determination of permeability. EICP imaging methods are explained, including optical microscopy and X‐Ray micro‐Computed Tomography (XRCT), and the corresponding image processing and analysis. We present and discuss a new experimental procedure using a microfluidic cell, as well as the general perspectives for further experimental and numerical simulation studies on induced calcite precipitation. The results of this study show the enormous benefits and insights achieved by combining both light microscopy and XRCT with hydraulic measurements in microfluidic chips. This allows for a quantitative analysis of the evolution of precipitates with respect to their size and shape, while monitoring their influence on permeability. We consider this to be an improvement of the existing methods in the literature regarding the interpretation of recorded data (pressure, flux, visualization) during pore morphology alteration. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/313851 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Felix Weinhardt,Holger Class,Samaneh Vahid Dastjerdi,et al. Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a microfluidic cell[J]. Water Resources Research,2021. |
APA | Felix Weinhardt,Holger Class,Samaneh Vahid Dastjerdi,Nikolaos Karadimitriou,Dongwon Lee,&Holger Steeb.(2021).Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a microfluidic cell.Water Resources Research. |
MLA | Felix Weinhardt,et al."Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a microfluidic cell".Water Resources Research (2021). |
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