Method of producing biodiesel from microalgae using thermo-responsive switchable solvent
申请人:UNITED ARAB EMIRATES UNIVERSITY
公开号:US11060120B1
公开(公告)日:2021-07-13
The method for producing biodiesel from microalgae using a thermo-responsive switchable solvent includes mixing a thermo-responsive switchable solvent (TSS) in a hydrophilic state with microalgae at room temperature (25° C.); maintaining the TSS-microalgae mixture in the hydrophilic state for a cell disruption time period; raising the temperature of the TSS-microalgae mixture to switch the TSS solvent to a hydrophobic state; maintaining the TSS solvent in the hydrophobic state in the presence of immobilized lipase catalyst and methanol for an extraction/reaction time period to obtain fatty acid methyl esters (FAMEs) as the oils are extracted; lowering the temperature of the TSS-microalgae mixture to switch the TSS solvent back to the hydrophilic state; and maintaining the TSS solvent in the hydrophilic state for a product separation time period. The method may further include extracting the FAMEs from the TSS-microalgae mixture with a nonpolar organic solvent to obtain the biodiesel product.
使用热响应可切换溶剂从微藻类生产生物柴油的方法包括:在室温(25° C. )下,将亲水状态的热响应可切换溶剂(TSS)与微藻类混合;将 TSS-微藻类混合物保持在亲水状态一段时间;提高 TSS-微藻类混合物的温度,使 TSS 溶剂切换到亲水状态。将处于亲水状态的 TSS-微藻混合物保持一段细胞破坏时间;提高 TSS-微藻混合物的温度,将 TSS 溶剂切换到疏水状态;在固定化脂肪酶催化剂和甲醇存在下,将处于疏水状态的 TSS 溶剂保持一段萃取/反应时间,以在萃取油脂时获得脂肪酸甲酯 (FAME);降低总悬浮固体-微藻混合物的温度,将总悬浮固体溶剂切换回亲水态;并将总悬浮固体溶剂保持在亲水态一段时间,进行产品分离。该方法可进一步包括用非极性有机溶剂从 TSS-微藻混合物中提取 FAME,以获得生物柴油产品。