Thermophysical Behavior of Carbonated Aqueous Solutions Containing Monoethanolamine and Degradation Products.

The impact of the degradation of monoethanolamine (MEA) on the physicochemical properties of the solvent is experimentally characterized. Based on the identification of three main degradation products of MEA: oxazolidine-2-one (OZD), N-(2-hydroxyethyl)ethylenediamine (HEEDA), and 1-(2-hydroxyethyl)-2-imidazolidinone (HEIA), new measurements for the density, surface tension, and viscosity of partially carbonated solutions containing water, MEA and those products were conducted at different MEA/degradation product molar ratios. The experiments covered a temperature range from 298.

Enhanced Olivine Reactivity in Wet Supercritical CO for Engineered Mineral Carbon Sequestration.

The success of CO mineralization as a potential solution for reducing carbon emissions hinges on understanding chemical interactions between basaltic minerals and CO-charged fluids. This study provides a detailed analysis of olivine dissolution in CO-water mixtures at 90 and 150 °C, 2-9 MPa, and for 8 and 24 h, in both water- and CO-dominant conditions. By using olivine crystal sections instead of powders, surface agitation is prevented, closing the gap between laboratory studies and natural settings.

Speed of Sound Measurements in Helium at Pressures from 15 to 100 MPa and Temperatures from 273 to 373 K.

The speed of sound in helium was measured along five isotherms in a temperature range from 273 to 373 K at pressures from 15 to 100 MPa with a relative expanded uncertainty ( = 2) from 0.02 to 0.04%.

D-dimers in omicron versus delta: A retrospective analysis.

Background: Infection with SARS-CoV-2 has shown to cause an increase in D-dimers, which correlate with severity and prognosis for in-hospital mortality. The B.1.