This study aims to provide the technoeconomic aspects of two clean processes for biodiesel production. The first process utilizes waste cooking oil as a feedstock and potassium hydroxide as a homogeneous catalyst. The second process uses cement kiln dust heterogeneous catalyst and virgin soybean oil. A comparison was performed between the results of the technical and economic assessments to determine the more feasible process. Theoretical purities of biodiesel and glycerol obtained upon conducting the simulation of both processes are high, i.e., 99.99%. However, the homogeneous process is economically superior as its payback period is slightly more than 1 year while the return on investment is higher than 74%, and the unit production cost is USD 1.067/kg biodiesel. Sensitivity analysis revealed that the profitability of biodiesel production is very sensitive to the feedstock price and recommends shifting toward waste vegetable oils as a cheap feedstock to have a feasible and economic process.

本研究旨在为生物柴油生产提供两种清洁工艺的技术经济方面。第一种方法利用废食用油作为原料，使用氢氧化钾作为均相催化剂。第二种方法使用水泥窑粉尘非均相催化剂和纯大豆油。在技​​术和经济评估的结果之间进行了比较，以确定更可行的过程。通过对两个过程进行模拟获得的生物柴油和甘油的理论纯度很高，即99.99％。但是，均质工艺在经济上具有优势，因为其投资回收期略超过1年，而投资回报率则高于74％，单位生产成本为1.067美元/千克生物柴油。