Volatile fatty acids recovery from thermophilic acidogenic fermentation using hydrophobic deep eutectic solvents.

ABSTRACT:

Background

Volatile fatty acids (VFA) derived from acidogenic fermentation can be recovered as precursors for synthesizing value-added chemicals to replace those from fossil fuels. However, separating VFAs from the fermentation broth with complex constituents and a high-water content is an energy-intensive process.

Results

This study developed an innovative membrane extraction technology, utilizing hydrophobic deep eutectic solvents (HDESs) as the acceptor phase along with an omniphobic membrane contactor for efficient extraction of anhydrous VFAs. All tested HDESs, three terpene-based type V HDESs and two tetraalkylammonium halide-based type III HDESs, were found to effectively extract VFAs at pH 3, with extraction recovery percentages (ERPs) up to 80% and 92% for 4 C- and

SUBMITTER: Liu C 

PROVIDER: S-EPMC12315322 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature