The production of fatty acid methyl esters (FAMEs) and triacetin (TA) from the lipids of the grease trap waste (GTW) using methyl acetate (MA) under pressurized conditions was investigated. The experiments evaluating the effect of temperature (275–350 ºC), residence time (10–30 min), addition of water (2.5–10 wt% in relation to the MA), free fatty acid (FFA) content (25 and 50 wt% in the GTW) in the formation of FAMEs and TA. The results show that an increase in temperature favors the FAME production in the first 10 min of reaction and from 20 min onward the yield increases at 300 °C and decreases at 325 °C. The TA production was higher in 30 min at 300 ºC. The addition of up to 5 wt% water (in MA) showed a similar yield, while higher contents leads to a reduction in the FAME production after 30 min. The use of a feedstock with up to 50 wt% (by mass) of FFAs has little influence on the formation of FAMEs and leads to lower amounts of TA. The reaction with MA (5 wt% of water) provided a sample with 57 % of FAMEs and 1.4 wt% of TA.

研究了在加压条件下使用乙酸甲酯（MA）从油脂捕集器废物（GTW）的脂质生产脂肪酸甲酯（FAMEs）和三醋精（TA）的方法。评估温度（275–350ºC），停留时间（10–30分钟），加水（相对于MA的2.5–10 wt％），游离脂肪酸（FFA）含量（25和50）的影响的实验FAME和TA形成的重量百分比）。结果表明，温度升高有利于反应的前10分钟内FAME的生成，从20分钟起，收率在300°C时增加，在325°C时减少。在300℃下30分钟内，TA的产量更高。添加至多5 wt％的水（在MA中）显示出相似的收率，而更高的含量导致30分钟后FAME产量的减少。FFA含量高达50％（质量）的原料的使用对FAME的形成影响很小，并导致TA含量降低。与MA（5 wt％的水）的反应为样品提供了57％的FAME和1.4 wt％的TA。