A5055698636- Per- and polyfluoroalkyl substances research
- Enhanced Oil Recovery Techniques
- Groundwater flow and contamination studies
- CO2 Sequestration and Geologic Interactions
- Hydraulic Fracturing and Reservoir Analysis
- Toxic Organic Pollutants Impact
- Hydrocarbon exploration and reservoir analysis
- Groundwater and Isotope Geochemistry
- Analytical chemistry methods development
- Methane Hydrates and Related Phenomena
- Lattice Boltzmann Simulation Studies
- Fluoride Effects and Removal
- Carbon Dioxide Capture Technologies
- Soil and Unsaturated Flow
- Adsorption and biosorption for pollutant removal
- Covalent Organic Framework Applications
- Reservoir Engineering and Simulation Methods
- Seismic Imaging and Inversion Techniques
- Hydrology and Watershed Management Studies
- Advanced Mathematical Modeling in Engineering
- Drilling and Well Engineering
- NMR spectroscopy and applications
- Chemical Analysis and Environmental Impact
- Soil Moisture and Remote Sensing
- Pickering emulsions and particle stabilization
University of Arizona
2019-2024
Xi'an University of Science and Technology
2022
Shandong Institute of Metrology
2022
Palmetto Hematology Oncology
2022
Princeton University
2014-2021
Rogers (United States)
2020
Southwest University
2018-2019
Stanford University
2017-2019
Chang'an University
2016
New Mexico Institute of Mining and Technology
1998
Abstract Per‐ and polyfluoroalkyl substances (PFAS) are emerging contaminants of critical concern. As surfactants, PFAS tend to accumulate at air‐water interfaces may stay in the vadose zone for long times before contaminating groundwater. Yet not well understood, extent retention has implications risk management remediation strategies. We present first mathematical model that accounts surfactant‐induced flow solid‐phase interfacial adsorption. apply simulate PFOS (a compound primary...
Abstract Per‐ and poly‐fluoroalkyl substances (PFAS) are interfacially‐active contaminants that adsorb at air‐water interfaces (AWIs). Water‐unsaturated soils have abundant AWIs, which generally consist of two types: one is associated with the pendular rings water between soil grains (i.e., bulk AWI) other arises from thin films covering grains. To date, types AWIs been treated same when modeling PFAS retention in vadose zones. However, presence electrical double layers grain surfaces...
Abstract We report theoretical and numerical studies of the flow behaviour when a fluid is injected into confined porous medium saturated with another different density viscosity. For two-dimensional configuration point source injection, nonlinear convection–diffusion equation derived to describe time evolution fluid–fluid interface. In early period, motion mainly driven by buoyancy force governing reduced diffusion well-known self-similar solution. late approximated hyperbolic that...
Abstract Per‐ and polyfluoroalkyl substances (PFAS) are surface‐active contaminants experiencing strong retention in vadose zones due to adsorption at air–water solid–water interfaces. Leaching of PFAS through poses great risks groundwater contamination. Prior transport studies have focused on homogenous or layered that significantly underrepresented the impact preferential flow caused by soil heterogeneities—a primary factor known dominantly control subsurface many contaminants. We conduct...
Many per- and polyfluoroalkyl substances (PFAS) are surface-active adsorb at fluid–fluid interfaces. The interfacial adsorption controls PFAS transport in multiple environmental systems, including leaching through soils, accumulation aerosols, treatment methods such as foam fractionation. Most contamination sites comprise mixtures of well hydrocarbon surfactants, which complicates their behaviors. We present a mathematical model for predicting tension interfaces multicomponent surfactants....
In the context of global warming, changes in major lakes and their responses to influence factors arid semi-arid regions along Silk Road are especially important for sustainable development local water resources. this study, areas 24 were extracted using MODIS NDVI data, spatial-temporal characteristics analyzed. addition, relationship between lake factors, including air temperature, precipitation, evapotranspiration, land use cover change (LULCC) population density watersheds, investigated....
Abstract Air–water interfacial adsorption complicates per‐ and polyfluoroalkyl substance (PFAS) transport in vadose zones. interfaces can arise from pendular rings between soil grains thin water films on grain surfaces, the latter of which account for over 90% total air–water most field‐relevant conditions. However, whether all thin‐water‐film are accessible by PFAS how mass‐transfer limitations control soils remain unknown. We develop a pore‐scale model that represents both at bulk...
This article systematically reviews the establishment of China’s modern public hospital management system. Through a review literature, on-site inspections, interviews, and other methods, authors mainly introduce current situation healthcare system from aspects such as hospitals, outpatient ward settings, medical insurance construction, personnel training, drug consumable management, salary benefits, research, infection prevention treatment, patient satisfaction. The summarizes analyzes...
PFAS are emerging contaminants that have been widespread in the environment. A growing body of site investigations suggests accumulated significantly soils at contamination sites, threatening to contaminate groundwater underneath. Quantifying leaching and mass discharge is therefore critical for characterizing, managing, mitigating long-term risks.Many surfactants adsorb air–water solid–water interfaces, which leads complex retention soils. Soils abundant air-water...
PFAS-LEACH is a comprehensive decision support platform developed at the University of Arizona that has capability to quantify source attenuation, spatial mass distribution, and long-term discharge PFAS from vadose zone groundwater PFAS-impacted sites. It includes suite four tiers models spanning full-process 3D numerical simulator analytical solutions implemented in Excel simple dilution-attenuation calculations. These account for various PFAS-specific fate transport processes soil...
Abstract Conventional vertically integrated models for CO 2 storage usually adopt a vertical equilibrium (VE) assumption, which states that due to strong buoyancy, and brine segregate quickly, so the fluids can be assumed have essentially hydrostatic pressure distributions in direction. However, VE assumption is inappropriate when time scale of fluid segregation not small relative simulation time. By casting equations into multiscale framework, new model developed relaxes thereby allowing...
Abstract A pore‐scale model is developed to simulate fluid‐fluid interfacial area in variably saturated porous media, with a specific focus on incorporating the effects of solid‐surface roughness. The designed quantify total (film and meniscus) ( nw ) over full range wetting‐phase fluid saturation S w based inherent properties medium. employs triangular pore space bundle‐of‐cylindrical‐capillaries framework, modified three surface roughness‐related parameters. first parameter (surface...