Enhanced extraction of butyric acid under high-pressure CO2 conditions to integrate chemical catalysis for value-added chemicals and biofuels

• DOI: 10.1186/s13068-018-1120-1
• Publication Date: 2018-04-23T01:48:30Z
• Authors: Jaesung Chun; Okkyoung Choi; Byoung-In Sang
• Keywords: Value (mathematics)

Extractive fermentation with the removal of carboxylic acid requires low pH conditions because acids are better partitioned into solvent phase at values. However, this requirement conflicts optimal near-neutral for microbial growth. CO2 pressurization was used, instead addition chemicals, to decrease extraction butyric acid, a product Clostridium tyrobutyricum, and butyl butyrate selected as an extractant. (50 bar) improved efficiency from solution 6, yielding distribution coefficient (D) 0.42. In situ during increased production by up 4.10 g/L h, almost twofold increase over control without use process. using temporal may be applied integrated downstream catalytic process upgrading value-added chemicals in organic solvent.