Using Clinoptilolite zeolite as an efficient catalyst for production of Biodiesel by electrochemical methods

The increasing scarcity of traditional petroleum reserves is driving a greater interest in renewable energy sources. Biodiesel, which is derived from vegetable oils or animal fats, is a promising alternative fuel for diesel engines due to its environmental benefits and potential cost-effectiveness. The high cost of biodiesel production, mainly attributed to the expense of feedstock, has been a significant challenge [۱]. However, electrochemical methods offer a solution by reducing heat and washing costs associated with conventional production methods [۲].This study presents a cost-effective approach to biodiesel production using electrolysis with graphite electrodes modified with carbon quantum dots. This method significantly lowers the applied potential to ۴V and reduces production time. Cooking oil, a sustainable feedstock, was used in the transesterification process. The impact of methanol/cooking oil ratio and the combination of zeolite clinoptilolite and sodium hydroxide concentration as catalysts on biodiesel conversion was carefully examined. Optimal conditions were identified as ۱% sodium hydroxide and zeolite clinoptilolite (catalysts), a ۱:۶ methanol to oil volume ratio, and ۱.۸% water. UV-visible spectroscopy confirmed the successful synthesis of biodiesel, with a good efficiency which is achieved in just ۳۰ minutes. The amount of glycerol and soap by-products was minimal. Notably, the use of modified graphite electrodes maintained a consistent temperature and reaction rate throughout, resulting in stable production.

Keywords:

Electrochemistry , Biodiesel , Transesterification , Clinoptilolite zeolite