title: Supercritical fluid reactive extraction of Jatropha curcas L. seeds with methanol: A novel biodiesel production method.
abstract: The novel biodiesel production technology using supercritical reactive extraction from Jatropha curcas L. oil seeds in this study has a promising role to fill as a more cost-effective processing technology. Compared to traditional biodiesel production method, supercritical reactive extraction can successfully carry out the extraction of oil and subsequent esterification/transesterification process to fatty acid methyl esters (FAME) simultaneously in a relatively short total operating time (45-80 min). Particle size of the seeds (0.5-2.0 mm) and reaction temperature/pressure (200-300 degrees C) are two primary factors being investigated. With 300 degrees C reaction temperature, 240 MPa operating pressure, 10.0 ml/g methanol to solid ratio and 2.5 ml/g of n-hexane to seed ratio, optimum oil extraction efficiency and FAME yield can reach up to 105.3% v/v and 103.5% w/w, respectively which exceeded theoretical yield calculated based on n-hexane Soxhlet extraction of Jatropha oil seeds.
authors.affiliation: School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia.
authors.forename: Steven
authors.initials: S
authors.lastname: Lim
authors.forename: Shuit Siew
authors.initials: SS
authors.lastname: Hoong
authors.forename: Lee Keat
authors.initials: LK
authors.lastname: Teong
authors.forename: Subhash
authors.initials: S
authors.lastname: Bhatia
mesh_terms: D056804:Biofuels / Q000032:analysis*; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D031286:Jatropha / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification*; D012639:Seeds / Q000737:chemistry*
chemical_list: D056804:Biofuels; D010936:Plant Extracts; D000432:Methanol