eprintid: 1706 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/17/06 datestamp: 2023-11-09 15:49:52 lastmod: 2023-11-09 15:49:52 status_changed: 2023-11-09 15:41:11 type: conference_item metadata_visibility: show creators_name: Prabaningrum, N. creators_name: Subbarao, D. creators_name: Ismail, L. title: In-situ transesterification of Jatropha curcas seeds using the mixture of methanol and isopropanol ispublished: pub keywords: Extractability; In-situ; Iso-propanols; Jatropha curcas; sodium methoxide, Biodiesel; Catalysts; Innovation; Methanol; Mixtures; Reaction rates; Seed; Sodium; Solubility; Sustainable development; Transesterification, Organic solvents note: 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 abstract: 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. date: 2011 official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857072549&doi=10.1109%2fNatPC.2011.6136282&partnerID=40&md5=7bf8f37870d146c14cc3918602f95b83 id_number: 10.1109/NatPC.2011.6136282 full_text_status: none publication: 2011 National Postgraduate Conference - Energy and Sustainability: Exploring the Innovative Minds, NPC 2011 place_of_pub: Perak refereed: TRUE isbn: 9781457718847 citation: Prabaningrum, N. and Subbarao, D. and Ismail, L. (2011) In-situ transesterification of Jatropha curcas seeds using the mixture of methanol and isopropanol. In: UNSPECIFIED.