Eggshell as heterogenous catalyst for biodiesel production from waste cooking oil and opportunities in China
Nie, Qi (2021)
Nie, Qi
2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2021061415966
https://urn.fi/URN:NBN:fi:amk-2021061415966
Tiivistelmä
Biodiesel production from waste cooking oil using biomass-based solid heterogeneous catalysts has gained attention. Calcium oxide catalyst can be derived from waste eggshells. This kind of catalyst has the advantages of low cost, recyclability, and environmental friendliness. This study examined the fac-tors affecting the transesterification process affecting the yield and gave suggested values, namely the catalyst concentration was 1.5 wt.%, the molar ratio of methanol to oil was 12:1, the reaction time was 2 h, the reaction temperature was 65°C, and the stirring rate was 250 rpm. Then, this study also presented a potential improvement measure—ultrasonic assist system.
In addition, this thesis also shows the opportunities for the future development of this method in China. It also discusses the five aspects, biodiesel opportunities, production cost, waste cooking oil collection, eggshell catalyst and value added by-products. With the world's largest population, China has a huge demand for energy. Although it has experience in making biodiesel from waste cooking oil, there are still problems in waste oil collection, government management, and technical support. Efforts are still needed for large-scale commercialization.
In addition, this thesis also shows the opportunities for the future development of this method in China. It also discusses the five aspects, biodiesel opportunities, production cost, waste cooking oil collection, eggshell catalyst and value added by-products. With the world's largest population, China has a huge demand for energy. Although it has experience in making biodiesel from waste cooking oil, there are still problems in waste oil collection, government management, and technical support. Efforts are still needed for large-scale commercialization.