未來展望

由於本研究製備的生質柴油轉化率只達到 90%，因此如何提高生質 柴油之轉化率為後續努力之要點。有學者提出以 0.05 μm 薄膜分離脂肪 酸甲酯與三酸甘油酯的研究，其原理為利用醇類與脂肪酸甲酯混和均 勻，經薄膜過濾將分子量較大的三酸甘油酯分離，以獲得較高純度之脂 肪酸甲酯如圖 5-1 所示（Dube et al., 2007）。

根據 Dube 的概念，未來期望發展一套過濾裝置整合於反應系統，

藉由薄膜快速地分離生質柴油與三酸甘油酯之特點，提高生質柴油之純 度，以應用於連續式反應器之設計，嘗試建立一個較大規模的生質柴油 製程。

此外，經由重力沉降或離心方式分離生質柴油與水相物質，水相中 含有醇類與甘油，醇類回收再使用與提高甘油濃度，將可提高生質柴油 製程的價值，以獲得較大的經濟利益。

圖 5-1 薄膜過濾分離油脂與脂肪酸甲酯示意圖（Dube et al., 2007）

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