A new approach in maximizing and direct utilization of whole Jatropha curcas L. kernels in biodiesel production – Technological improvement. (January 2016)

• Record Type: Journal Article
• Authors: Go, Alchris Woo; Sutanto, Sylviana; Zullaikah, Siti; Ismadji, Suryadi; Ju, Yi-Hsu
• Is Part Of: Renewable energy. Volume 85(2016)
• Page Start: 759
• Page End: 765
• Publication Date: 2016-01
• Subjects: Jatropha curcas -- Supercriticritical methanol -- Subcritical water -- Subcritical acetic acid -- (Trans)esterification; AG acylglyceride -- AOCS American Oil Chemist Society -- FA fatty acid -- FAME fatty acid methyl ester -- FFA free fatty acid -- HTGC high temperature gas chromatography -- JCL Jatropha curcas L. -- PM phospholipid membrane -- SCW subcritical water -- SSR solvent to solid ratio -- DPPH 1, 1-diphenyl-2-picryhydrazyl -- TLC thin layer chromatography; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2015.06.073
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: The direct ( trans )esterification of whole Jatropha curcas L. (JCL) kernels in subcritical solvent mixture of water, methanol and acetic acid was explored. A high fatty acid methyl ester (FAME) yield of 96.56% could be achieved at a solvent (water: acetic acid: methanol = 1:5:15, v/v/v) to solid ratio of 7 cm 3 g −1 . The reaction mixture was pressurize with carbon dioxide and reacted for 1 h at 523 K and 12.5 MPa. Qualitative tests on the recovered polar fractions of the product were found to have radical scavenging activities. The characteristics of the spent kernel residues were also studied. The method employed in this study provides an alternative approach to better utilize JCL kernels and cut down the number of production steps. Highlights: Direct utilization of whole Jatrpha curcas L. kernels. New approach in maximizing the utilization of Jatrpha curcas L. kernels. Preliminary characterization of by-products from in-situ transesterification.