Determination of CO₂ Solubility in Water by NIR Spectroscopy under Different Temperature and Pressure Conditions.

ABSTRACT: Monitoring the solubility of carbon dioxide (CO₂) in water under high-pressure and -temperature conditions is critical for industrial processes. Although the solubility behavior of CO₂ is well-established in the literature, most conventional methods rely on offline, invasive, or indirect measurements. In this study, a methodology was developed to monitor CO₂ solubility in water using near-infrared (NIR) spectroscopy due to its sensitivity to molecular interactions and ability to detect structural changes in the aqueous matrix in real time. The experimental system consisted of an apparatus similar to the static synthetic method coupled with an NIR spectrophotometer, enabling noninvasive spectral data acquisition during the dissolution of CO₂ in ul

SUBMITTER: da Silveira LA 

PROVIDER: S-EPMC12771439 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature