Salting‐out of bio‐based 2, 3‐butanediol from aqueous solutions. Issue 1 (6th May 2016)

• Record Type: Journal Article
• Authors: Xie, Shaoqu; Zhang, Yulei; Zhou, Yong; Wang, Zeru; Yi, Conghua; Qiu, Xueqing
• Is Part Of: Journal of chemical technology & biotechnology. Volume 92:Issue 1(2017)
• Page Start: 122
• Page End: 132
• Publication Date: 2016-05-06
• Subjects: salting‐out -- 2, 3‐butanediol -- aqueous solutions -- inorganic electrolytes -- liquid–liquid equilibria; Biotechnology -- Periodicals; Chemistry, Technical -- Periodicals; Chemical engineering -- Periodicals; Industries -- Environmental aspects -- Periodicals; 660
• DOI: 10.1002/jctb.4999
• Languages: English
• ISSNs: 0268-2575

Abstract

Abstract: BACKGROUND: Microbial production of 2, 3‐butanediol (2, 3‐BD) with different substrates and organisms results in various 2, 3‐BD concentration in fermentation broths. The salting‐out of 2, 3‐BD from different aqueous solutions with different solute content by four high‐solubility salts (K4 P2 O7 3H2 O, K2 HPO4 3H2 O, K2 CO3, K3 PO4 3H2 O) were investigated at 298.15 K. RESULTS: The distribution coefficient and selectivity coefficient of 2, 3‐BD were greatly affected by the salt composition and the initial salt concentration, but influenced by the solute content slightly. When the initial K4 P2 O7 concentration was higher than or equal to 550 g kg −1, 100% of 2, 3‐BD from the aqueous solutions was recovered, and more than 97.5% of water was removed. CONCLUSION: The salting‐out effects of four salts on the aqueous 2, 3‐BD solutions were determined in the following order: K4 P2 O7 >K3 PO4 > K2 HPO4 >K2 CO3 . Moreover, the solubility of 2, 3‐BD in both phases can be predicted in terms of the initial salt concentration and the solute content. © 2016 Society of Chemical Industry