A pilot carbon dioxide (CO2) sequestration experiment was carried out in the Michigan Basin in which 10,000 tonnes of supercritical CO2was injected into the Bass Island Dolomite (BILD) at 1050 mdepth. A passive seismic monitoring (PSM) network was operated before, during and after the 17-day injection period. The seismic monitoring network consisted of two arrays of eight, three-component senso...

I review the methodology of "high-performance" liquid chromatography as applied to therapeutic drug monitoring. Aside from direct injection of sample, sample cleanup involves miscible and immiscible organic solvent extractions, solid-phase extraction, and size separations. Column considerations are bonded phases, column dimensions, particle size, guard columns, stability, pH range, and reproduc...

Formation of carbonate minerals by CO2 sequestration is a potential means to reduce atmospheric CO2 emissions. Vast amount of alkaline and alkali earth metals exist in silicate minerals that may be carbonated. Laboratory experiments carried out to study the dissolution rate in Pahang Sandstone, Malaysia, by CO2 injection at different flow rate in surficial condition. X-ray Powder Diffraction (X...

Zoback and Gorelick [(2012) Proc Natl Acad Sci USA 109(26):10164-10168] have claimed that geologic carbon storage in deep saline formations is very likely to trigger large induced seismicity, which may damage the caprock and ruin the objective of keeping CO2 stored deep underground. We argue that felt induced earthquakes due to geologic CO2 storage are unlikely because (i) sedimentary formation...

We examine the role of thermal fluctuations in uniform two-dimensional binary Bose mixtures dilute ultracold atomic gases. use a mean-field Hartree-Fock theory to derive analytical predictions for miscible-immiscible transition. A nontrivial result this is that fully miscible phase at $T=0$ may become unstable $T\neq0$, as consequence divergent behaviour spin susceptibility. test prediction by ...

Carbonated water has proven advantages over conventional CO2 injection in terms of arresting free mobility, low-pressure injection, lower volume requirement, and higher efficiency. The term “engineered water” is designated to selective ion-spiked with the advantage ion-exchange reactions rock minerals releasing trapped oil. This article investigated synergic effect dissolved engineered for oil ...

First posted February 1, 2022 For additional information, contact: Program Coordinator, Energy Resources ProgramU.S. Geological Survey12201 Sunrise Valley DriveReston, VA 20192Telephone: 703–648–6470Contact Pubs Warehouse In 2020, the U.S. Survey (USGS) completed a probabilistic assessment of volume technically recoverable oil resources available if current carbon dioxide enhanced recovery (CO2...

W hen the U.S. finally gets serious about climate change, it will have to reduce emissions of CO 2 by more than a factor of two during this century in order to do its part in stabilizing atmospheric concentrations (1). CO 2 capture and disposal is among the most important supply-side technologies for managing the carbon problem. This technology could enable continued access to fossil energy whi...

Retinal amacrine cells are depolarized by the excitatory synaptic input from bipolar cells. When a graded depolarization exceeds the threshold level, trains of action potentials are generated. There have been several reports that both spikes and graded depolarization are sensitive to tetrodotoxin (TTX). In the present study, we investigated the contribution of voltage-gated currents to membrane...

A switchable-hydrophilicity solvent (SHS) is a solvent that in one state forms a biphasic mixture with water but can be reversibly switched to another state that is miscible with water. We describe a mathematical model of the behaviour of CO2-triggered SHS that narrows the search field for these solvents in terms of their basicity and hydrophilicity. By its predictive power, the mathematical mo...