Abstract

The oil cake from argan, an available raw material in Morocco, was explored for biodiesel production. The residual lipids of roasted and unroasted argan cakes were transesterified under alkaline conditions. The best biodiesel yield (94%) was obtained after transesterification of residual lipids from roasted argan cake using a methanol:lipid ratio of 6:1 with 0.6 g of KOH per g of oil at 65 °C. Physicochemical characteristics of the oils and biodiesels, such as density, acid number, iodine, saponification and calorific value, were determined. These measured values were similar to those found with standard biodiesel and petro-diesel. Fatty acid compositions of the residual lipids and biodiesels were determined via gas chromatography, revealing 85% unsaturated fatty acid, mainly represented by oleic and linoleic acids, in these two products.

摘要

摩洛哥坚果油是一种可用的原料，用于生产生物柴油。烘烤和未烘烤的摩洛哥坚果蛋糕的残留脂质在碱性​​条件下进行了酯交换。在 65 °C 下，使用 6:1 的甲醇：脂质比和 0.6 g KOH/g 油对烤摩洛哥坚果饼中的残留脂质进行酯交换后，获得了最佳的生物柴油产率 (94%)。测定了油和生物柴油的物理化学特性，如密度、酸值、碘、皂化和热值。这些测量值与标准生物柴油和石油柴油的测量值相似。残留脂质和生物柴油的脂肪酸组成通过气相色谱法测定，揭示了这两种产品中 85% 的不饱和脂肪酸，主要以油酸和亚油酸为代表。