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DOI | 10.1029/2019WR025420 |
Assessing the Kinetics and Pore-Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment | |
Kim, Daehyun H.1,2; Mahabadi, Nariman1,3; Jang, Jaewon4; van Paassen, Leon A.1 | |
2020-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Switzerland; South Korea |
英文摘要 | Biomineralization through microbially or enzymatically induced calcium carbonate precipitation (MICP/EICP) by urea hydrolysis has been widely investigated for various engineering applications. Empirical correlations relating the amount of mineral precipitation to engineering properties like strength, stiffness, or permeability show large variations, which can be partly attributed to the pore-scale characteristics of the precipitated minerals. This study aimed to gain insight into the precipitation kinetics and pore-scale characteristics of calcium carbonate minerals through time lapse imaging of a transparent microfluidic chip, which was flushed 10 times with a reactive solution to stimulate EICP. An image processing algorithm was developed to detect the individual precipitated minerals and separate them from the grains and trapped air. Statistical analysis was performed to quantify the number and size distribution of precipitated minerals during each treatment cycle and the cumulative volume, surface area, bulk precipitation rate, nucleation rate, and supersaturation were calculated and compared with a simple numerical model and more complex theory on precipitation kinetics. The analysis showed that results were significantly affected by the assumed particle shape. The supersaturation, which controls the crystal nucleation and growth rates, was shown to be a function of the hydrolysis rate, the kinetic order and growth rate constant, and available surface area for mineral growth. Possible explanations for observed discrepancies between observations and theory, including diffusion limitations, the presence of inhibiting compounds, local pore clogging or observation bias, and limitations of the methodology, are discussed. |
英文关键词 | urea hydrolysis MICP EICP image processing precipitation kinetics microfluidic chip |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000535672800063 |
WOS关键词 | REACTIVE TRANSPORT MODEL ; CRYSTAL-GROWTH ; CACO3 PRECIPITATION ; MATHEMATICAL-MODEL ; GROUND IMPROVEMENT ; NUCLEATION ; INHIBITION ; CRYSTALLIZATION ; DISSOLUTION ; ARAGONITE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/280491 |
专题 | 资源环境科学 |
作者单位 | 1.Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA; 2.Ecole Polytech Fed Lausanne, Lab Soil Mech, Lausanne, Switzerland; 3.Univ Akron, Dept Civil Engn, Akron, OH 44325 USA; 4.Hanyang Univ, Dept Civil & Environm Engn, Seoul, South Korea |
推荐引用方式 GB/T 7714 | Kim, Daehyun H.,Mahabadi, Nariman,Jang, Jaewon,et al. Assessing the Kinetics and Pore-Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment[J]. WATER RESOURCES RESEARCH,2020,56(2). |
APA | Kim, Daehyun H.,Mahabadi, Nariman,Jang, Jaewon,&van Paassen, Leon A..(2020).Assessing the Kinetics and Pore-Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment.WATER RESOURCES RESEARCH,56(2). |
MLA | Kim, Daehyun H.,et al."Assessing the Kinetics and Pore-Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment".WATER RESOURCES RESEARCH 56.2(2020). |
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