Department of Chemical Engineering, Kunsan National University, 558 Daehak-ro, Gunsan, Jeollabuk-do 54150, Republic of Korea.
Bioresour Technol. 2017 Dec;245(Pt A):116-122. doi: 10.1016/j.biortech.2017.08.206. Epub 2017 Sep 21.
A cost-effective five-step sugar purification process involving simultaneous removal and recovery of fermentation inhibitors from biomass hydrolysates was first proposed here. Only the three separation steps (PB, PC and PD) in the process were investigated here. Furfural was selectively removed up to 98.4% from a simulated five-component hydrolysate in a cross-current three-stage extraction system with n-hexane. Most of acetic acid in a simulated four-component hydrolysate was selectively removed by emulsion liquid membrane, and it could be concentrated in the stripping solution up to 4.5 times its initial concentration in the feed solution. 5-Hydroxymethylfurfural was selectively removed from a simulated three-component hydrolysate in batch and continuous fixed-bed column adsorption systems with L-493 adsorbent. Also, 5-hydroxymethylfurfural could be concentrated to about 9 times its feed concentration in the continuous adsorption system through a fixed-bed column desorption experiment with aqueous ethanol solution. These results have shown that the proposed purification process was valid.
本研究首次提出了一种经济有效的五步糖纯化工艺，该工艺涉及从生物质水解物中同时去除和回收发酵抑制剂。本研究仅考察了该工艺中的三个分离步骤（PB、PC 和 PD）。在带有正己烷的错流三级萃取系统中，糠醛从模拟的五组分水解物中被选择性地去除了 98.4%。在模拟的四组分水解物中，大部分的乙酸通过乳状液膜被选择性地去除，并且可以在汽提液中浓缩至初始进料浓度的 4.5 倍。在间歇和连续固定床柱吸附系统中，L-493 吸附剂从模拟的三组分水解物中选择性地去除 5-羟甲基糠醛。此外，通过带有乙醇水溶液的固定床柱解吸实验，在连续吸附系统中，5-羟甲基糠醛可以浓缩至进料浓度的约 9 倍。这些结果表明，所提出的纯化工艺是有效的。
