Continuous in-situ extraction of acetic acid produced by Acetobacterium woodii during fermentation of hydrogen and carbon dioxide using Amberlite FPA53 ion exchange resins. (December 2020)

• Record Type: Journal Article
• Authors: Karekar, Supriya C.; Srinivas, Keerthi; Ahring, Birgitte K.
• Is Part Of: Bioresource technology reports. Volume 12(2020)
• Publication Date: 2020-12
• Subjects: Ion exchange resins -- Amberlite FPA53 -- Acetic acid -- Acetobacterium woodii -- Gas-liquid fermentation; Biomass energy -- Periodicals; Biotransformation (Metabolism) -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Waste products as fuel -- Periodicals; Waste products as fuel; Organic wastes; Factory and trade waste; Biotransformation (Metabolism); Biomass energy; Agricultural wastes; Periodicals; Electronic journals; 662.88
• DOI: 10.1016/j.biteb.2020.100568
• Languages: English
• ISSNs: 2589-014X

Abstract

Abstract: Ion-exchange resins have emerged as a promising technology for separation of targeted products from biochemical production. In this study, in-situ acetic acid extraction using Amberlite FPA53 resins was examined. The study includes initial testing of the resins for separation of different concentrations of acetic acid in water along with continuous in-situ extraction of acetic acid from gas-liquid fermentation with Acetobacterium woodi on a mixture of 70% H2 –30% CO2 . An average acetic acid adsorption of 67.6 mg/g resin was achieved using Amberlite FPA53, significantly lower than the concentration obtained with pure acetic acid solutions (159.6 mg/g resin). This result indicates that pH and competing components in the fermentation broth influence the efficiency of the resin. Implementing in-situ extraction of acetic acid increased its production by 1.6-fold resulting in 10.21 g/L acetic acid for extractive fermentation compared to 6.4 g/L for the control, without continuous extraction of acetic acid. Graphical abstract: Unlabelled Image Highlights: Acetic acid adsorption of 67.6 mg/g resin was achieved using Amberlite FPA53. 1.6-fold increased productivity for extractive fermentation compared to control. Reduced product inhibition with increased acetic acid production.