Critical Assessment of Models for Transport of Engineered Nanoparticles in Saturated Porous Media

2014 ◽  
Vol 48 (21) ◽  
pp. 12732-12741 ◽  
Author(s):  
Eli Goldberg ◽  
Martin Scheringer ◽  
Thomas D. Bucheli ◽  
Konrad Hungerbühler
Keyword(s):  
Porous Media ◽  
Critical Assessment ◽  
Engineered Nanoparticles ◽  
Saturated Porous Media

scholarly journals Transport of N-CD and Pre-Sorbed Pb in Saturated Porous Media

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5518
Author(s):  
Salahaddin Kamrani ◽  
Vahab Amiri ◽  
Mosleh Kamrani ◽  
Mohammed Baalousha
Keyword(s):  
Porous Media ◽  
Ionic Strength ◽  
Water Solubility ◽  
Divalent Cations ◽  
High Water ◽  
Engineered Nanoparticles ◽  
Saturated Porous Media ◽  
Metal Affinity ◽  
Adsorption Affinity ◽  
New Type

Carbon dots (CDs) are a new type of nanomaterials of the carbon family with unique characteristics, such as their small size (e.g., <10 nm), high water solubility, low toxicity, and high metal affinity. Modification of CDs by Nitrogen functional groups (N-CDs) enhances their metal adsorption capacity. This study investigated the influences of pH (4, 6, and 9), ionic strength (1, 50, and 100 mM), and cation valency (Na+ and Ca2+) on the competitive adsorption of Pb to quartz and N-CD surfaces, the transport and retention of N-CDs in saturated porous media, and the capacity of N-CDs to mobilize pre-adsorbed Pb in quartz columns. Pb adsorption was higher on N-CDs than on quartz surfaces and decreased with increases in ionic strength (IS) and divalent cations (Ca2+) concentration. N-CD mobility in quartz columns was highest at pH of 9- and 1-mM monovalent cations (Na+) and decreased with decreases in pH and increases in ionic strength and ion valency. N-CDs mobilized pre-adsorbed Pb from quartz due to the higher adsorption affinity of Pb to N-CD than to quartz surfaces. These findings provide valuable insights into the transport, retention, and risk assessment of lead in the presence of carbon-based engineered nanoparticles.

Transport of engineered nanoparticles in saturated porous media

2010 ◽  
Vol 12 (7) ◽  
pp. 2371-2380 ◽  
Author(s):  
Yuan Tian ◽  
Bin Gao ◽  
Carlos Silvera-Batista ◽  
Kirk J. Ziegler
Keyword(s):  
Porous Media ◽  
Engineered Nanoparticles ◽  
Saturated Porous Media

COUPLING FINITE ELEMENTS APPLIED TO HYDRAULIC ANALYSIS IN SATURATED POROUS MEDIA

2019 ◽  
Author(s):  
Murilo Camargo ◽  
Pedro Cleto ◽  
Eduardo Alexandre Rodrigues ◽  
Heber Agnelo Antonel Fabbri ◽  
Osvaldo Luís Manzoli
Keyword(s):  
Porous Media ◽  
Finite Elements ◽  
Saturated Porous Media ◽  
Hydraulic Analysis

scholarly journals Experimental study of the supercritical CO 2 diffusion coefficient in porous media under reservoir conditions

2019 ◽  
Vol 6 (6) ◽  
pp. 181902 ◽  
Author(s):  
Junchen Lv ◽  
Yuan Chi ◽  
Changzhong Zhao ◽  
Yi Zhang ◽  
Hailin Mu
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Oil Recovery ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Elevated Pressure ◽  
Experimental Results ◽  
Saturated Porous Media ◽  
Reservoir Conditions ◽  
The Impact

Reliable measurement of the CO 2 diffusion coefficient in consolidated oil-saturated porous media is critical for the design and performance of CO 2 -enhanced oil recovery (EOR) and carbon capture and storage (CCS) projects. A thorough experimental investigation of the supercritical CO 2 diffusion in n -decane-saturated Berea cores with permeabilities of 50 and 100 mD was conducted in this study at elevated pressure (10–25 MPa) and temperature (333.15–373.15 K), which simulated actual reservoir conditions. The supercritical CO 2 diffusion coefficients in the Berea cores were calculated by a model appropriate for diffusion in porous media based on Fick's Law. The results show that the supercritical CO 2 diffusion coefficient increases as the pressure, temperature and permeability increase. The supercritical CO 2 diffusion coefficient first increases slowly at 10 MPa and then grows significantly with increasing pressure. The impact of the pressure decreases at elevated temperature. The effect of permeability remains steady despite the temperature change during the experiments. The effect of gas state and porous media on the supercritical CO 2 diffusion coefficient was further discussed by comparing the results of this study with previous study. Based on the experimental results, an empirical correlation for supercritical CO 2 diffusion coefficient in n -decane-saturated porous media was developed. The experimental results contribute to the study of supercritical CO 2 diffusion in compact porous media.

Dissolution of Microscale Energetic Residues in Saturated Porous Media: Visualization and Quantification at the Pore-Scale by Spectral Confocal Microscopy

2011 ◽  
Vol 45 (19) ◽  
pp. 8352-8358 ◽  
Author(s):  
Chao Wang ◽  
Volha Lazouskaya ◽  
Mark E. Fuller ◽  
Jeffrey L. Caplan ◽  
Charles E. Schaefer ◽  
...  
Keyword(s):  
Porous Media ◽  
Confocal Microscopy ◽  
Saturated Porous Media ◽  
Pore Scale
Sign in / Sign up

Export Citation Format

Share Document