Congeneration biodiesel, ricinine and nontoxic meal from castor seed

Qing-li Zhu, Heng Gu and Zengguang Ke

Renewable Energy, 2018, vol. 120, issue C, 51-59

Abstract: Castor seed, as non-edible energy oilseed, was used to obtain several products, such as biodiesel, ricinine, and non-toxic castor seed meal through ultrasonic-assisted two-phase extraction (UATPE), alkaline transesterification, and recrystallization. The products with higher quality could be obtained by UATPE in shorter extraction time. The optimum conditions for UATPE were as follows: the extraction time of 60 min, the corresponding temperature of 55 °C, the ratio of castor seed meal, petroleum ether and deionized water was 1:4:6 (mg/mL/mL). Castor oil which was obtained by UATPE was used to produce the biodiesel. And the yield of biodiesel could come up to 95.7% with the temperature of 60 °C, the molar ratio of methanol to oil of 7:1, the amount of the catalyst of 0.7%, and the reaction time of 60 min. Meanwhile, with the trichrolomethanol as re-extraction agent, and ethanol as the recrystallization agent, the purity and recovery of the ricinine could be got to 97.7% and 93.8%, respectively. In addition, the structural characterizations of the obtained ricinine and biodiesel were carried out by UV, FITR, ESI-MS and other analytical methods.

Keywords: Castor seed; Biodiesel; Ricinine; Ultrasonic-assisted two-phase extraction (UATPE) (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:120:y:2018:i:c:p:51-59

DOI: 10.1016/j.renene.2017.12.075

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