Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.
Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.
Bioresour Technol. 2014 Feb;153:370-3. doi: 10.1016/j.biortech.2013.12.002. Epub 2013 Dec 11.
Simultaneous esterification and transesterification method is employed for the preparation of biodiesel from 7.5% free fatty acid (FFA) containing karanja (Pongamia glabra) oil using water resistant and reusable carbon-based solid acid catalyst derived from glycerol in a single step. The optimum reaction parameters for obtaining biodiesel in >99% yield by simultaneous esterification and transesterification are: methanol (1:45 mole ratio of oil), catalyst 20wt.% of oil, temperature 160°C and reaction time of 4h. After the reaction, the catalyst was easily recovered by filtration and reused for five times with out any deactivation under optimized conditions. This single-step process could be a potential route for biodiesel production from high FFA containing oils by simplifying the procedure and reducing costs and effluent generation.
采用同时酯化和酯交换法，使用由甘油一步法制备的耐水、可重复使用的碳基固体酸催化剂，从含有 7.5%游离脂肪酸（FFA）的印苦树（Pongamia glabra）油中制备生物柴油。同时酯化和酯交换获得>99%产率生物柴油的最佳反应参数为：甲醇（油的 1:45 摩尔比）、催化剂 20wt.%的油、温度 160°C 和反应时间 4 小时。反应后，催化剂通过过滤很容易回收，并在优化条件下重复使用五次而没有失活。这种一步法工艺可以通过简化工艺、降低成本和减少废水生成，为高 FFA 含量油生产生物柴油提供一种潜在途径。
