Lihat Juga

• Moisture Sorption Behavior Of Jatropha Seeds At 20 °C As A Source Of Vegetable Oil For Biodiesel Production Vol 19, No 3, 2011
  oleh: Kartika, Ika Amalia
  Terbitan: (2011)
• Biodiesel and bioplastic production by in situ transesterification of jatropha seeds
  oleh: Ika Amalia Kartika
  Terbitan: (2010)
• ABSTRACT The increasing of human demand about diesel fuel that was not balanced with the appropriate of petroleum production caused global crisis of energy. Under these conditions, biodiesel is a promising alternative fuel to replace petroleum-based diesel. Jatropha curcas L. can be used as an alternative energy resource because it contains 30-40% oils. Jatropha curcas L. is a plant that can be easily growned in Indonesia, so it is prospective as raw material for biodiesel. The purpose of this study was to determine the influence of reaction time and hexane to total solvent ratio on biodiesel yield and quality produced by in situ transesterification of jatropha seeds. The used raw material was grounded jatropha seeds with moisture content of < 2% and ± 20 mesh size. The operating conditions of hexane to total solvent ratio and reaction time were varied at 1/6, 2/6, 3/6 and 3, 4, 5 h, respectively. KOH concentration, reaction temperature and stirring speed were fixed at 0.075 mol/L methanol, 55oC and 300 rpm. The analysis of biodiesel quality included acid value, viscosity, ash content and saponification value. The results were analyzed with Response Surface Method (RSM). The produced biodiesel yield was 71%-81%. The highest yield (80.67%) and the best quality of biodiesel were obtained under operation condition of the 5 h reaction time and 1/6 hexane to total solvent ratio (acid value of 0.31 mg KOH/g, saponification value of 193.97 mg KOH/g, viscosity of 3.45 cSt, and ash content of 0%). Respon surface analysis of hexane to total solvent ratio and reaction time variables to respon of biodiesel yield resulted first order equation, Y = 63.00– 4.14(A) + 3.81(B), with R2= 95.56%. The variable of reaction time (B) had significant influence on biodiesel yield. Respon surface analysis of operating condition variables to respon of biodiesel quality showed the variable of hexane to solvent ratio (A) and reaction time (B) had significant influence on acid value and viscosity, especially. Keywords: biodiesel, jatropha, in situ transesterification, reaction time, solvent ratio
  oleh: (E-Jurnal Agro-Industri Indonesia), Fitriyana Ayu Aprilyanti dan Ika Amalia Kartika
  Terbitan: (2013)
• ABSTRACT The cake of jatropha seed as by product generated from in situ transesterification process contains high protein (34,68%) and it is not yet optimally benefited. In this research, the cake of jatropha seed was benefited to produce binderless particle board. The purpose of this research is to produce the particle board from the cake of jatropha seed generated by in situ transesterification process with protein as natural binder. The particle board production was carried out under the following process condition : jatropha seed cake moisture content (10- 20%), pressing temperature (140-180oC) and pressing duration (8-12 min). The phisycal and mechanical properties of particle board were tested according to JIS A 5908:2003. Jatropha seed cake moisture content, pressing temperature and pressing duration affected the phisycal and mechanical properties of particle board. The density and moisture content of particle board were respectively 0,79-0,91 g/cm3 and 7,07-10,06%. The swelling in water and water absorpsion after 24 hour water soaking were respectively 14,88-30,60% and 51,67-82,93%, and they were not accordance with JIS A 5908:2003. Modulus of Rupture (MOR) and Modulus of Elasticity (MOE) of particle board were not also accordance with JIS A 5908:2003. Their value respectively were 20,04-65,99 kgf/cm2 and 2340,90-5150,25 kgf/cm2. Generally, the phisycal and mechanical properties of particle board were not accordance with JIS A 5908:2003 except for density and moisture content. Keywords : cake of jatropha seed, particle board, in situ transesterification
  oleh: Ika Amalia Kartika, Sri Lestari dan
  Terbitan: (2012)
• In-situ Alkaline Transesterification of Jatropha curcas seed Oil for Production of Biodiesel and Nontoxic Jatropha seed Cake
  oleh: Nazir, Novizar; Faculty of Agricultural Technology, Andalas University, Padang, Indonesia, 25163, et al.
  Terbitan: (2014)