Pereira JPC, Overbeek W, Gudiño-Reyes N, Andrés-García E, Kapteijn F, van der Wielen LAM, Straathof AJJ. Integrated Vacuum Stripping and Adsorption for the Efficient Recovery of (Biobased) 2-Butanol.
Ind Eng Chem Res 2019;
58:296-305. [PMID:
30774191 PMCID:
PMC6369677 DOI:
10.1021/acs.iecr.8b03043]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 11/29/2018] [Accepted: 12/12/2018] [Indexed: 11/29/2022]
Abstract
![]()
Biobased
2-butanol offers high potential as biofuel, but its toxicity
toward microbial hosts calls for efficient techniques to alleviate
product inhibition in fermentation processes. Aiming at the selective
recovery of 2-butanol, the feasibility of a process combining in situ vacuum stripping followed by vapor adsorption has
been assessed using mimicked fermentation media. The experimental
vacuum stripping of model solutions and corn stover hydrolysate closely
aligned with mass transfer model predictions. However, the presence
of lignocellulosic impurities affected 2-butanol recovery yields resulting
from vapor condensation, which decreased from 96 wt % in model solutions
to 40 wt % using hydrolysate. For the selective recovery of 2-butanol
from a vapor mixture enriched in water and carbon dioxide, silicalite
materials were the most efficient, particularly at low alcohol partial
pressures. Integrating in situ vacuum stripping with
vapor adsorption using HiSiv3000 proved useful to effectively concentrate
2-butanol above its azeotropic composition (>68 wt %), facilitating
further product purification.
Collapse