When injected underground in saline aquifers or depleted oil and gas fields, CO2 mixes with the resident brine to form carbonic acid. The carbonic acid can react with the host carbonate rock, and alter the rock structure and flow properties. In this study, we have used X-ray micro-...
While oxygen could be reduced at the potential of H2/H⁺, the low solubility of oxygen in water (~ 0.6 mg L−1under atmospheric conditions or simulated flue gas with 5% O2) plays a critical role in maintaining electrolysis stability (Supplementary Fig.5). On the anode side, wh...
CO2solubility in water can also be estimated by thermodynamic modeling, which is more cost-effective than experimental measurements. In recent years, the potential of theoretical models to effectively represent influential characteristics such as pressure, temperature, and electrolyte concentrations has attrac...
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h 1* The growing application of carbon dioxide (CO2) in various environmental and energy fields, including carbon capture and storage (CCS) and several CO2-based enhanced oil recovery (EOR) techniques, highlights the importance of studying the phase equilibria of this gas with water. ...
It was deduced that the standard oxygen transfer rate, representing the amount of oxygen introduced to water per unit time under standard conditions, grows with higher air flow rates. Conversely, as the gas flow rate raises, it leads to higher power consumption, resulting in a reduction of the...
as well as to absorb CO2in the presence of water vapor. This problem is widely presented in such studies as57,58,59,60,61,62. For example, Vanchugov et al.57analyzed and assessed the underground space for the utilization of carbon dioxide, including after emissions from oil refineries beca...
When CO2 is absorbed into a solution, it binds with a water molecule to form a molecule of carbonic acid (H2CO3)Carbonic acid [H2CO3] has a rather strong acidifying effect in that 95% of it turns into bicarbonate [HCO3-]. This loss of an H+ ion causes the ocean pH to decrease....
(mixing) water and 1 kg of other binder materials (e.g., secondary CMs, clinker, gypsum, sodium silicate activator), at the concrete batching plant. This functional unit implies that the national and global average cementitious binder mixes modeled produce concrete with equivalent properties (e...
Streams are significant sources of CO2 to the atmosphere. Estimates of CO2 evasion fluxes (f CO2) from streams typically relate to the free flowing water but exclude geomorphological structures within the stream corridor. We found that gravel bars (GBs)