Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Journal of Energy, Mechanical, Material and Manufacturing Engineering

Effect of Alkaline Metal Catalyst to Transesterification of Jatropha Curcas oil Kurniawati, Dini
Journal of Energy, Mechanical, Material and Manufacturing Engineering Vol 3, No 1 (2018)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (711.624 KB) | DOI: 10.22219/jemmme.v3i1.5880

Abstract

Biodiesel is a renewable energy made of oil or fat. It is either vegetable or animal oil or fat. By using catalyst, both substances are processed by triglyceride modification to be methyl esters. This research concerned to find out the potency of alkaline (IIA) catalyst in processing biodiesel. This process initiated by testing oil free fatty acid to determine processing method. FFA value is very important in the beginning of process as it correlates to further reaction process. Temperature variation specified on 30o to 70o for 6 hours reaction. Result shows that the best methyl esters value used Mg(OH)2, Ca(OH)2 and Ba(OH)2 catalysts, respectively in 61,75%; 62,66% and 73,03%  on 60oC reaction temperature.
THE POTENT OF CARRIER OIL ON PRETREATMENT OF CRUDE JATROPHA CURCAS OIL Kurniawati, Dini; Aisyah, Iis Siti
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol 5, No 1 (2020)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.937 KB) | DOI: 10.22219/jemmme.v5i1.12336

Abstract

Jatropha curcas oil is a seed oil or bio-oil, which has advantages compared to others plant?s seed-oil.  The advantage of this oil is due to the fact that Jatropha oil does not compete with the food sector. In this research, the potential carrier oil testing was conducted to seek a way in improving the performance of Jatropha oil as lubricant oil, coolant or biodiesel. For this purpose, Jatropha oil was mixed with the other carrier oils in the variation of 0 ? 45 %. Each variation was tested to obtain kinematic viscosity and density values. The results of this research was the carrier oils has the potential to be used as the mixing material since it can improve the physical properties of Jatropha oil, before the next process. Kinematic viscosity and density of Jatropha oil decreases as more percentage of mixed carrier oil was added.
Effect of Alkaline Metal Catalyst to Transesterification of Jatropha Curcas oil Dini Kurniawati
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 1 (2018)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v3i1.5880

Abstract

Biodiesel is a renewable energy made of oil or fat. It is either vegetable or animal oil or fat. By using catalyst, both substances are processed by triglyceride modification to be methyl esters. This research concerned to find out the potency of alkaline (IIA) catalyst in processing biodiesel. This process initiated by testing oil free fatty acid to determine processing method. FFA value is very important in the beginning of process as it correlates to further reaction process. Temperature variation specified on 30o to 70o for 6 hours reaction. Result shows that the best methyl esters value used Mg(OH)2, Ca(OH)2 and Ba(OH)2 catalysts, respectively in 61,75%; 62,66% and 73,03%  on 60oC reaction temperature.
The Potent of Carrier Oil on Pretreatment of Crude Jatropha Curcas Oil Dini Kurniawati; Iis Siti Aisyah
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 5 No. 1 (2020)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v5i1.12336

Abstract

Jatropha curcas oil is a seed oil or bio-oil, which has advantages compared to others plant’s seed-oil.  The advantage of this oil is due to the fact that Jatropha oil does not compete with the food sector. In this research, the potential carrier oil testing was conducted to seek a way in improving the performance of Jatropha oil as lubricant oil, coolant or biodiesel. For this purpose, Jatropha oil was mixed with the other carrier oils in the variation of 0 – 45 %. Each variation was tested to obtain kinematic viscosity and density values. The results of this research was the carrier oils has the potential to be used as the mixing material since it can improve the physical properties of Jatropha oil, before the next process. Kinematic viscosity and density of Jatropha oil decreases as more percentage of mixed carrier oil was added.
Mechanical Properties of Layered-Carbon Fiber Reinforced with Vacuum Infusion Process Ali Saifullah; Mohammad Jufri; Dini Kurniawati; Risky Chandra
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 1 (2021)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v6i1.16428

Abstract

Research on material engineering is widely developed in the precursors, composition of the material, and technique to create a composite. The layering and vacuum infusion resin are the developing technology to create the composites with the new characteristics and properties. This experiment is intended to find out the characteristics of layering carbon fiber reinforced by resin and is molded with vacuum infusion technique. The specimens of this experiment is layered-carbon fiber composites determined in three, four, five, six, and seven layers. The precursors of 220 and 240 carbon fibers are the main material of the composites. The tests conducted to the specimens are bending and tensile tests. The both tests are treated to reveal the mechanical properties of the composites. The least layers of 220 and 240 carbon fiber result the highest value of bending test, but the most number of carbon fiber layers show the opposite value. The results are reverse in the tensile test. The highest value of the tensile test is achieved by the most layers of carbon fiber, while the lowest value is in the least layers. This result is almost the same with the strain-stress, but overall the graphic is similarly increase to the most layers. Deduction achieved in this experiment is that the number of layers in the carbon fiber composites is significantly influencing the mechanical properties of the composite.