Liquid-Liquid Extraction of Formic Acid with 2-Methyltetrahydrofuran: Experiments, Process Modeling, and Economics.

ABSTRACT: Formic acid (FA) is an interesting hydrogen (H₂) and carbon monoxide (CO) carrier that can be produced by the electrochemical reduction of carbon dioxide (CO₂) using renewable energy. The separation of FA from water is challenging due to the strong (cross)association of the components and the presence of a high boiling azeotrope. For the separation of dilute FA solutions, liquid-liquid extraction is preferred over conventional distillation because distilling large amounts of water is very energy-intensive. In this study, we use 2-methyltetrahydrofuran (2-MTHF) to extract FA from the CO₂ electrolysis process, which typically contains <20 wt % of FA. Vapor-liquid equilibrium (VLE) data of the binary system 2-MTHF-FA and liquid-liquid equilibrium (LLE) data of

SUBMITTER: Laitinen AT 

PROVIDER: S-EPMC8154433 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature