EXTRACTION AND CHARACTERIZATION OF OIL FROM NEEM AND YELLOW OLEANDER SEEDS FOR BIODIESEL PRODUCTION

European Journal of Materials Science and Engineering

Abdullahi Madu YAMI¹  Mohammed E. IBRAHIM¹  Abdulkabir RAJI¹ 

[1] Department of Mechanical Engineering, Modibbo Adama University of Technology P.M.B 0274, Yola, Nigeria.;

关键词: biodiesel;    seed oil;    soxhlet extractor;    n-hexane;    free fatty acid;    iodine value;    saponification;    value;   

DOI  :  10.36868/ejmse.2020.05.04.212

来源: DOAJ

【 摘 要 】

Oil from neem and yellow oleander seeds were extracted using Soxhlet extractor with normal hexane as solvent and characterized using standard methods and their Physico chemical properties determined. The results revealed that the oil yields of neem and yellow oleander seeds are 38.80% and 49.69% respectively. Both oil samples contain high free fatty acid values, 8.77% for neem and 7.21% for yellow oleander. The characterization revealed the following results for neem seed oil; saponification value = 185.50 mg KOH/g, acid value = 17.54 mg KOH/g, iodine value = 58 mg I/100g, peroxide value = 7.95 mg/peroxide/kg, viscosity at 40 °C = 37.80 mm/s2, specific gravity = 0.87, and refractive index = 1.469 while saponification value = 196.30 mg KOH/g, acid value = 14.42 mg KOH/g, iodine value = 81 mg I/100g, peroxide value = 4.20 mg/peroxide/kg, viscosity at 40 °C = 31.40 mm/s2, specific gravity = 0.96, and refractive index = 1.467for yellow oleander seed oil. The results of the experimental analyses carried out in this study indicate that neem and yellow oleander seeds are high-yielding and good sources of oil for commercial biodiesel production. Values obtained for physico chemical properties of the extracted oils fall within the acceptable limits for oils suitable for biodiesel production by international standards. High free fatty values obtained revealed that the oils must undergo acid esterification before transesterification to avoid the formation of soap.

【 授权许可】

Unknown