TY - CONF ID - scholars1706 SN - 9781457718847 TI - In-situ transesterification of Jatropha curcas seeds using the mixture of methanol and isopropanol N1 - cited By 5; Conference of 3rd National Postgraduate Conference - Energy and Sustainability: Exploring the Innovative Minds, NPC 2011 ; Conference Date: 19 September 2011 Through 20 September 2011; Conference Code:88531 Y1 - 2011/// CY - Perak KW - Extractability; In-situ; Iso-propanols; Jatropha curcas; sodium methoxide KW - Biodiesel; Catalysts; Innovation; Methanol; Mixtures; Reaction rates; Seed; Sodium; Solubility; Sustainable development; Transesterification KW - Organic solvents AV - none UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857072549&doi=10.1109%2fNatPC.2011.6136282&partnerID=40&md5=7bf8f37870d146c14cc3918602f95b83 N2 - The solubility and extractability of alcohol to triglyceride is an important factor in biodiesel production to enhance the reaction rate and to obtain a better purification. Methanol and isopropanol have an opposite properties of solubility and extractability to Jatropha curcas oil. Therefore, the mixture of methanol and isopropanol was used for conducting in situ transesterification of Jatropha curcas seeds with sodium methoxide as alkaline catalyst. The reaction was carried out by varying the ratio of solvent volume to seed weight from 6.25 to 8.75 (ml/g), various volume ratio of methanol to mixture from 0.33 to 0.66 (ml MeOH/ml mixture), and various catalyst concentration from 1.0 to 2.0 wt at 60°C and reaction time 120 minutes. The highest conversion to biodiesel 74.28 was achieved with ratio of methanol and isopropanol volume to seed weight of 7.39, volume ratio of methanol to mixture of 0.655 and NaOMe concentration 1.58 wt at 60°C and reaction time 120 minutes. © 2011 IEEE. A1 - Prabaningrum, N. A1 - Subbarao, D. A1 - Ismail, L. ER -