Transesterification of waste cooking oil using clinoptilolite/ industrial phosphoric waste as green and environmental catalysts

This paper focuses on creating a new, environmentally sustainable catalyst made of industrial phosphoric waste and clinoptilolite for transesterification of waste cooking oil. A state-of-the-art CaO-based catalyst supported on the industrial phosphoric waste was obtained from a clinoptilolite zeolite-like material and alkali-activated CaO. So after ordinary purification, the clinoptilolite, and the weighed calcium oxide were stirred for 24 h at room temperature and then kept at 800 ? for 2 h for the formation of the catalyst. For assessment of the catalyst, the study used XRF, FT-IR, SEM, XRD, and BET. Under optimized conditions, the highest purity of biodiesel for waste cooking oil was 84.76%, the oil to methanol volume ratio was 1.47, the catalyst dosage was 8.08 wt%, the temperature was 54.72 degrees C, and the duration was 119 min. Results indicated that using waste cooking oil as raw materials and clinoptilolite/CaO as a catalyst for biodiesel development is a cost-effective and eco-friendly oil-recycling method and minimizes the production costs of biodiesel to improve biodiesel's competitiveness vis petroleum diesel. (C) 2022 Elsevier Ltd. All rights reserved.

Automated summary

This paper focuses on the synthesis of an environmentally sustainable catalyst using industrial phosphoric waste and clinoptilolite for transesterification of waste cooking oil. Under optimized conditions, the catalyst achieved a purity of 84.76% for biodiesel production. The study demonstrates that using waste cooking oil and clinoptilolite/CaO as a catalyst is a cost-effective and eco-friendly method for oil recycling.