Emergent Behavior at the Calcite–Water Interface during Reactive Transport in a Simple Microfluidic Channel
Emergent Behavior at the Calcite–Water Interface during Reactive Transport in a Simple Microfluidic Channel
复制标题
简单微流体通道中反应传输过程中方解石与水界面的突现行为
DOI:
10.1021/acsearthspacechem.1c00424
复制
发表时间:
2022
影响因子:
3.4
通讯作者:
Sturchio, Neil C.
中科院分区:
文献类型:
--
作者:
Abdilla, Bektur;Minahan, Daniel J.;Gleghorn, Jason P.;Kim, YoungJae;Lee, Sang Soo;Fenter, Paul;Sturchio, Neil C.
Geochemical reactive transport processes in natural mineral–fluid systems may produce a wide array of emergent phenomena that are difficult to predict from basic principles and to reproduce in model systems. Here, we present experimental results obtained from a simple microfluidic system with which we explored the consequences of reacting the calcite (104) cleavage surface with an acidic Pb-bearing solution (pH = 3.5, [Pb]total= 5 mM) as a function of flow rate. This system is relevant to passive remediation systems for Pb-rich acid mine drainage. We observed periodic banding in the amounts of Pb sorption at flow velocities ≥926 μm s–1, where the band spacing was spatially correlated with the amount of calcite dissolution and the development of micropyramidal topography on the calcite (104) surface. The equivalent coverage of Pb deposited in these Pb-rich bands was at least several monolayers per unit cell, yet there was no evidence for precipitation of any secondary Pb phase implying incorporation of Pb within the near-surface calcite lattice. We also observed spatial variations in nucleation and growth of euhedral secondary Pb-carbonate minerals hydrocerusite and cerussite at flow rates ≤278 μm s–1. These findings demonstrate potential for exploiting the rich phenomenology afforded by the interplay among transport phenomena and chemical kinetics in experimental systems designed to yield deeper insights into geochemical self-organization.
登录
查看更多内容
影响因子:
4.9
作者:
Hagens, M.;Slomp, C. P.;Middelburg, J. J.
通讯作者:
Middelburg, J. J.
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
R. Liesegang
通讯作者:
R. Liesegang
DOI:
10.1115/1.4047133
发表时间:
2020
期刊:
Journal of biomechanical engineering
影响因子:
--
作者:
Schappell,LaurelE;Minahan,DanielJ;Gleghorn,JasonP
通讯作者:
Gleghorn,JasonP
影响因子:
3.3
作者:
A. Volford;F. Izsák;Matyas Ripszam;I. Lagzi
通讯作者:
I. Lagzi
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
P. Ortoleva
通讯作者:
P. Ortoleva