Impact of Caprock Type on Geochemical Reactivity and Mineral Trapping Efficiency of CO

2020 ◽  
Author(s):  
Emad A. Al-Khdheeawi ◽  
Doaa Saleh Mahdi ◽  
Muhammad Ali ◽  
Cut Aja Fauziah ◽  
Ahmed Barifcani
Keyword(s):  
Trapping Efficiency ◽  
Geochemical Reactivity ◽  
Mineral Trapping

CO2 mineral trapping comparison in different regions: predicted geochemical reactivity of the Precipice Sandstone reservoir and overlying Evergreen Formation

2021 ◽  
pp. petgeo2020-106
Author(s):  
J. K. Pearce ◽  
A. D. La Croix ◽  
F. J. Brink ◽  
P. J. Hayes ◽  
J. R. Underschultz
Keyword(s):  
Co2 Storage ◽  
Content Type ◽  
Low Salinity ◽  
Link Type ◽  
Rock Types ◽  
Geochemical Reactivity ◽  
Supplementary Material ◽  
Sandstone Reservoir ◽  
Mineral Trapping ◽  
Good Agreement

Injected CO2 streams may have geochemical reactivity to different rock types in a CO2 storage complex depending on solubility and formation water chemistry. The Precipice Sandstone and Evergreen Formation are a low-salinity reservoir-seal pair in the Surat Basin, Australia, targeted for potential CO2 storage. The kinetic geochemical CO2 reactivity of different rock Facies from three regions were predicted over 30 and 1000 year time periods. No material CO2 mineral trapping in the quartz-rich Precipice Sandstone reservoir was predicted, owing to the low rock reactivity. Predicted CO2 mineral trapping in the Evergreen Formation was more variable due to different amounts of more reactive feldspars, clays, calcite and siderite. Predicted mineral trapping as siderite and ankerite was between 0.03 and 8.4 kg/m3 CO2 and mainly depends on chlorite and plagioclase content. Predicted pH was between 5 and 7.5 after 1000 years. Pyrite precipitation was also predicted with SO2 present in the injectate. QEMSCAN and SEM-EDS spot imaging of samples from the seal containing natural fractures filled by siderite, pyrite, clays, ankerite, calcite, barite and apatite represent a natural analogue for natural mineral trapping. These are in good agreement with our model predictions. This study suggests that, from a geochemical perspective, the Precipice Sandstone is a suitable storage reservoir where mineral trapping would occur in the overlying Evergreen Formation.Supplementary material: [additional model input, characterisation and model images, and an excel file of QEMSCAN mineral and porosity components] is available at https://doi.org/10.6084/m9.figshare.c.5395393Thematic collection: This article is part of the Geoscience for CO2 storage collection available at: https://www.lyellcollection.org/cc/geoscience-for-co2-storage

scholarly journals Design of a Secondary Freeform Lens of UV LED Mosquito-Trapping Lamp for Enhancing Trapping Efficiency

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 335 ◽  
Author(s):  
Wei-Hsiung Tseng ◽  
Diana Juan ◽  
Wei-Cheng Hsiao ◽  
Cheng-Han Chan ◽  
Hsin-Yi Ma ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Light Emitting Diode ◽  
Trapping Efficiency ◽  
Axially Symmetric ◽  
Light Intensity Distribution ◽  
Light Emitting ◽  
Led Light ◽  
Uv Led ◽  
Freeform Lens

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

scholarly journals Doping of Mg on ZnO Nanorods Demonstrated Improved Photocatalytic Degradation and Antimicrobial Potential with Molecular Docking Analysis

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Muhammad Ikram ◽  
Sidra Aslam ◽  
Ali Haider ◽  
Sadia Naz ◽  
Anwar Ul-Hamid ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Functional Groups ◽  
Zno Nanorods ◽  
Docking Studies ◽  
Trapping Efficiency ◽  
Wurtzite Phase ◽  
Binding Score ◽  
Doped Zno ◽  
Co Precipitation ◽  
Mg Doped

AbstractVarious concentrations of Mg-doped ZnO nanorods (NRs) were prepared using co-precipitation technique. The objective of this study was to improve the photocatalytic properties of ZnO. The effect of Mg doping on the structure, phase constitution, functional groups presence, optical properties, elemental composition, surface morphology and microstructure of ZnO was evaluated with XRD, FTIR, UV–Vis spectrophotometer, EDS, and HR-TEM, respectively. Optical absorption spectra obtained from the prepared samples showed evidence of blueshift upon doping. XRD results revealed hexagonal wurtzite phase of nanocomposite with a gradual decrease in crystallite size with Mg addition. PL spectroscopy showed trapping efficiency and migration of charge carriers with electron–hole recombination behavior, while HR-TEM estimated interlayer d-spacing. The presence of chemical bonding, vibration modes and functional groups at the interface of ZnO was revealed by FTIR and Raman spectra. In this study, photocatalytic, sonocatalytic and sonophotocatalytic performance of prepared NRs was systematically investigated by degrading a mixture of methylene blue and ciprofloxacin (MBCF). Experimental results suggested that improved degradation performance was shown by Mg-doped ZnO NRs. We believe that the product synthesized in this study will prove to be a beneficial and promising photocatalyst for wastewater treatment. Conclusively, Mg-doped ZnO exhibited substantial (p < 0.05) efficacy against gram-negative (G-ve) as compared to gram-positive (G+ve) bacteria. In silico molecular docking studies of Mg-doped ZnO NRs against DHFR (binding score: − 7.518 kcal/mol), DHPS (binding score: − 6.973 kcal/mol) and FabH (− 6.548 kcal/mol) of E. coli predicted inhibition of given enzymes as possible mechanism behind their bactericidal activity.

scholarly journals Adsorption and mineral trapping dominate CO2 storage in coal systems

2011 ◽  
Vol 4 ◽  
pp. 3131-3138 ◽  
Author(s):  
S.D. Golding ◽  
I.T. Uysal ◽  
C.J. Boreham ◽  
D. Kirste ◽  
K.A. Baublys ◽  
...  
Keyword(s):  
Co2 Storage ◽  
Mineral Trapping

scholarly journals Study of Mineral Trapping of CO2 and Seal Leakage Mitigation

2014 ◽  
Vol 63 ◽  
pp. 5490-5494
Author(s):  
Qi Liu ◽  
M. Mercedes Maroto-Valer
Keyword(s):  
Mineral Trapping

scholarly journals The lunar photoelectron sheath: A change in trapping efficiency during a solar storm

2013 ◽  
Vol 118 (5) ◽  
pp. 1114-1122 ◽  
Author(s):  
W. M. Farrell ◽  
A. R. Poppe ◽  
M. I. Zimmerman ◽  
J. S. Halekas ◽  
G. T. Delory ◽  
...  
Keyword(s):  
Trapping Efficiency ◽  
Solar Storm ◽  
Photoelectron Sheath

Physical clogging model using stick rate of calcite on CO2 mineral trapping

2011 ◽  
pp. 1385-1388
Author(s):  
S Yoo ◽  
Y Mito ◽  
T Matsuoka ◽  
Y Kuroda ◽  
A Ueda
Keyword(s):  
Mineral Trapping

scholarly journals Nearfield trapping increases lifetime of single-molecule junction by one order of magnitude

2020 ◽  
Author(s):  
Albert C. Aragonès ◽  
Katrin F. Domke
Keyword(s):  
Molecular Electronics ◽  
Single Molecule ◽  
Fold Increase ◽  
Trapping Efficiency ◽  
Non Invasive ◽  
Order Of Magnitude ◽  
Molecule Junction ◽  
Single Molecule Junction ◽  
The Difference ◽  
Power Densities

Abstract Progress in molecular electronics (ME) is largely based on improved understanding of the properties of single molecules (SM) trapped for seconds or longer to enable their detailed characterization. We present a plasmon-supported break-junction (PBJ) platform to significantly increase the lifetime of SM junctions of 1,4-benzendithiol (BDT) without the need for chemical modification of molecule or electrode. Moderate far-field power densities of ca. 11 mW/µm2 lead to a >10-fold increase in minimum lifetime compared to laser-OFF conditions. The nearfield trapping efficiency is twice as large for bridge-site contact compared to hollow-site geometry, which can be attributed to the difference in polarizability. Current measurements and tip-enhanced Raman spectra confirm that native structure and contact geometry of BDT are preserved during the PBJ experiment. By providing a non-invasive pathway to increase short lifetimes of SM junctions, PBJ is a valuable approach for ME, paving the way for improved SM sensing and recognition platforms.

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