-
Dr Michael G. Gomez (Department of Civil and Environmental Engineering, University of Washington, Seattle)16/05/2018, 14:37MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Microbially Induced Calcite Precipitation (MICP) is a bio-mediated soil improvement process that can improve the engineering properties of granular soils through the precipitation of calcium carbonate on soil particle surfaces and contacts. Although bio-cementation has been investigated extensively in laboratory experiments (DeJong et al. 2006, Martinez et al. 2013, and others) and...
Go to contribution page -
Dr Catherine M. Kirkland (Montana State University)16/05/2018, 14:55MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Microbially-induced calcite precipitation (MICP) is being widely researched as an emerging technology for subsurface engineering applications including sealing defects in wellbore cement and modifying the permeability of rock formations [1]. Our study team, including Montana State University’s Energy Research Institute and Center for Biofilm Engineering, The University of Stuttgart, Montana...
Go to contribution page -
Johannes Hommel (University of Stuttgart)16/05/2018, 15:13MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Fluid storage in the subsurface is important to reduce climate change (sequestration of CO2) or for energy storage (CH4, H2) to cope with the intermittent, unpredictable production of renewable sources like wind and solar. However, the fluids have the potential to leak through damaged cap rocks or wellbores. One method to remediate these problems is inducing calcium carbonate precipitation...
Go to contribution page -
Neerja Zambare (Montana State University)16/05/2018, 15:40MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Strontium-90 (Sr-90), a toxic and carcinogenic radionuclide, is the product of uranium fission and is found in soil and groundwater at numerous DOE sites.1 Sr can also enter the environment through mine tailings leachate, produced water ponds (oil and gas extraction) or can occur naturally in rock formations.
Go to contribution page
A potential technology for groundwater remediation is the use of subsurface... -
Linn W. Thrane (Mechanical and Industrial Engineering, Montana State University )16/05/2018, 15:58MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Low-field nuclear magnetic resonance (NMR) is a non-invasive measuring technique and an excellent tool for determining properties of materials with high magnetic susceptibilities such as rock cores and natural sediments. NMR is sensitive to parameters such as pore size, pore fluid changes, and permeability that are of interest to engineering applications such as subsurface fracture sealing and...
Go to contribution page -
Daehyun Kim (Arizona State University)16/05/2018, 16:16MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Several biochemical processes have been investigated to modify engineering properties of soil. Biomineral precipitation can increase strength and stiffness, and reduce porosity and permeability. Enzymatically induced calcium carbonate precipitation (EICP) is a biochemical process in which urea is hydrolyzed into ammonium and inorganic carbon, which promotes carbonate mineral precipitation....
Go to contribution page -
563. Pore space sealing using microbially mediated calcite precipitation: a lab to field scale studyDr Dominique J. Tobler (Nano-Science Center, Department of Chemistry, University of Copenhagen, Denmark)16/05/2018, 16:34MS 4.05: Biochemical mineral precipitation for subsurface applicationsOral 20 Minutes
Microbially driven calcite precipitation (via ureolysis) has shown great potential in a wide range of applications, including solid-phase capture, concrete crack remediation, soil stabilisation and carbon sequestration. Here, this process is investigated as a means of reducing the primary porosity and/or secondary fracture porosity of host rocks surrounding nuclear waste repositories in order...
Go to contribution page -
Ting Liu16/05/2018, 16:52MS 1.11: Conservative and Reactive Transport of Charged Species in Permeable and Impermeable Porous MediaPoster + 3 Minute Pitch
When a solvent carries cations through a soil with fixed capacity for adsorption or ion exchange, the evolution of concentration fronts, which propagate through the soil at characteristic fractions of the solvent flow speed, is well described by classical theory. When the soil contains hydrophilic minerals such as iron oxyhydroxide, quartz, and clays which readily adsorb and desorb protons,...
Go to contribution page -
Ms Zi Ye16/05/2018, 16:55MS 1.11: Conservative and Reactive Transport of Charged Species in Permeable and Impermeable Porous MediaPoster + 3 Minute Pitch
Hydraulic fracturing (or fracking) is a well stimulation technique for unconventional oil and gas extraction [1]. Around 8-38 million cubic meters of fracking fluid containing water, chemicals, and sand are injected into the shale every day [2]. High-pressure injection of fracking fluids allows to create fractures and mobilize the gas and the oil towards the surface. Together with the gas, a...
Go to contribution page -
Prof. Moran Wang (Tsinghua University Department of Engineering Mechanics )16/05/2018, 16:58MS 1.11: Conservative and Reactive Transport of Charged Species in Permeable and Impermeable Porous MediaPoster + 3 Minute Pitch
Surface charge at solid-electrolyte interface is generally affected by the local physical and chemical properties in the solution such as ionic strength, pH and so on. In a system with concentration or pH variation, rather than the prevailing assumption of homogeneous surface change, it leads to a spontaneous inhomogeneous distribution of surface charge, which has been observed in geotechnical...
Go to contribution page -
Mr Xiaolong Yin (Colorado School of Mines)16/05/2018, 17:01MS 4.10: Evaluation and Optimization of Non-Conservative Transport in Porous MediaPoster + 3 Minute Pitch
It is well known that the radionuclide-carrying colloids in ground water can facilitate the transport of contaminants in the subsurface. A set of column experiments under physically and chemically heterogeneous conditions was conducted. Pore velocity was maintained below 100 cm/d and solution of CsI and silica colloids (1 micron diameter) was injected through saturated columns. At the same...
Go to contribution page -
Mr Kang Yu (CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China University of Chinese Academy of Sciences, Beijing 100049, China )16/05/2018, 17:04MS 4.10: Evaluation and Optimization of Non-Conservative Transport in Porous MediaPoster + 3 Minute Pitch
A lattice Boltzmann method is applied for investigating the flow and convection diffusion processes in porous media with fractures and vugs at representative elementary volume (REV) scale. The structural parameters of porous media at pore scale are introduced into the generalized lattice Boltzmann equation (GLBE) to describe the relationship between permeability and porosity. A two-dimensional...
Go to contribution page -
Yujia Zhang16/05/2018, 17:07MS 4.10: Evaluation and Optimization of Non-Conservative Transport in Porous MediaPoster + 3 Minute Pitch
Zeolites have great potential in adsorption and separation of alkanes-olefins mixtures with similar properties due to its shape selectivity and huge specific surface area1. In our work, a series of zeolites were quickly screened to separate 1-chloropropane from 1-chloropropane/allyl chloride gas mixtures by the molecular simulation. The adsorption isotherm curves of simple component were...
Go to contribution page -
Mr Anjun Liu (School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences)16/05/2018, 17:10MS 4.10: Evaluation and Optimization of Non-Conservative Transport in Porous MediaPoster + 3 Minute Pitch
With developments and applications of micro-reactors in the food, chemical and pharmaceutical industry, hydrodynamics and transport processes of drops in shear and extensional flows in micro-channels have attracted much attention from both academics and practitioners. Such systems specifically demonstrate potentials to enhance transport in micro-channels. The objective of this work is to...
Go to contribution page -
Manuela Bastidas (Hasselt University)16/05/2018, 17:13MS 1.18: Pore scale formulations and upscaling of reactive transport problems in porous mediaPoster + 3 Minute Pitch
In this presentation we present a numerical method for simulating fluid flow in highly anisotropic and heterogeneous porous media. To understand the behavior of the fluids at the scale of applications (the macro scale), the flow at the scale of pores (the micro scale) needs to be taken into account. In this case, standard numerical methods will either fail or become inefficient due to the...
Go to contribution page
Choose timezone
Your profile timezone: