Department of Chemistry and Chemical Engineering, Inha University, Republic of Korea.
Department of Chemistry and Chemical Engineering, Inha University, Republic of Korea.
Bioresour Technol. 2020 Jan;296:122309. doi: 10.1016/j.biortech.2019.122309. Epub 2019 Oct 21.
The utilization of microalgae as bioenergy source was limited by the excessive cost and energy consumption during the process of lipid extraction and separation. CO-induced switchable ionic liquids (S-ILs) with reversible hydrophobic-hydrophilic conversion were synthesized and applied for lipid extraction and separation. The reversible transition mechanism of switchable IL is due to the formation of carbamate. The novel approach based on S-ILs was developed for lipid extraction from wet microalgae, which coupled microalgae cell disruption, lipid extraction, separation, and solvent recovery process without additional solvents. The highest lipid extraction efficiencies from wet microalgae were obtained by CDIPA-Im, and the lipids were recovered from the extraction phase by simply bubbling CO. Furthermore, CDIPA-Im maintained more than 83.6 ± 3.6% of its initial lipid extraction efficiency after recycling five times. The S-IL based extraction and separation method provides a new strategy for sustainable bioenergy production.
利用微藻作为生物能源受到脂质提取和分离过程中成本过高和能耗过大的限制。本文合成了具有可逆疏水性-亲水性转换的 CO 诱导型可切换离子液体（S-ILs），并将其应用于脂质提取和分离。可切换 IL 的可逆转变机制归因于氨基甲酸酯的形成。基于 S-ILs 的新方法被开发用于从湿微藻中提取脂质，该方法将微藻细胞破碎、脂质提取、分离和溶剂回收过程结合在一起，无需额外的溶剂。从湿微藻中获得的最高脂质提取效率是通过 CDIPA-Im 获得的，并且可以通过简单地鼓入 CO 将脂质从萃取相中回收。此外，CDIPA-Im 在循环使用五次后仍保持其初始脂质提取效率的 83.6±3.6%以上。基于 S-IL 的提取和分离方法为可持续生物能源生产提供了新的策略。
