Green Catalyzing Transesterification of Soybean Oil with Methanol for Biodiesel Based on the Reuse of Waste River-Snail Shell
In this paper, calcined river-snail shell was used as a novel solid base catalyst in the transesterification of soybean oil with methanol for biodiesel production. The calcined river-snail shell was characterized using field emission scanning electron microscope and X-ray diffraction. Effects of transesterification process variables were investigated. The results indicated that river-snail shell calcined at 800 °C catalyzed the transesterification of soybean oil for biodiesel with a yield over 98 % under the conditions including catalyst of 3.0% (w/w), a molar ratio of methanol/oil of 9:1, reaction time of 3 h, and reaction temperature of 65 °C. As a low-cost green catalyst, calcined river-snail shell could not only minimize the environmental wastes resulted from the solid shell, but also reduce the production costs of biodiesel.
Xianghua Liu, Zhengyi Jiang and Jingtao Han
X. H. Liu et al., "Green Catalyzing Transesterification of Soybean Oil with Methanol for Biodiesel Based on the Reuse of Waste River-Snail Shell", Advanced Materials Research, Vols. 148-149, pp. 794-798, 2011