Assessing the experimental investigation of milk thistle oil for biodiesel production using base catalyzed transesterification

Kifayat Ullah, Mushtaq Ahmad, Sofia, and Fengxian Qiu

Energy, 2015, vol. 89, issue C, 887-895

Abstract: In the present research work, non edible oil source milk thistle (Silybum marianum (L.) Gaert) plant was investigated for biodiesel production. The extracted crude oil was 26.14% of the total seed dry weight. The free fatty acid content of oil was reduced from 0.56 mg KOH/g to 0.06 mg KOH/g by esterification before the synthesis of biodiesel. The highest conversion percentage of biodiesel was achieved 89.51% and 87.42% using solid base catalyst sodium hydroxide (0.75%) and potassium hydroxide (1.0%), respectively. The protocol for experiment was adjusted as follow: temperature (60 °C); time of reaction (2 h), steering (600 rpm) and the oil molar ratio was fixed 1:6. Qualitatively, the prepared biodiesel was quantified by GC chromatography, 13C &1H NMR (Nuclear Magnetic Resonance), AAS and FT-IR spectroscopy. The fuel properties of biodiesel were tested and compared with ASTM D6751 and EN 14214 standards.

Keywords: Milk thistle plant; Non edible oil; Two step process; MTOB; Chromatography; Spectroscopy (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:89:y:2015:i:c:p:887-895

DOI: 10.1016/j.energy.2015.06.028

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