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Elwina, E
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Materials Science & Nanotechnology

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DISTILLATION OF ESSENTIAL OILS FROM THE LEAVES AND STEMS OF CITRONELLA (Cymbopogon Winterianus) USING A SOLAR ENERGY-BASED VAPOR DISTILLATION APPARATUS WITH PHOTOVOLTAIC METHOD Hafidh, Muhammad; Rihayat, Teuku; Elwina, E
Jurnal Sains dan Teknologi Reaksi Vol 21, No 02 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i02.4816

Abstract

The photovoltaic method with solar panel modules with a capacity of 100 Wp can absorb heat and convert it into electrical energy up to 100 watts / hour and is used for the citronella oil refining process which requires 57,550 Kj of energy.  By using 4 solar cell panels, within 4 hours the power generated is able to meet these energy needs. Based on the test results of the design of the distillation device using solar cells, the efficiency of energy absorption cannot be absorbed up to 100%, due to the occurrence of lost energy but this can be overcome with a longer absorption time. In testing citronella oil with variations in drying time and distillation time, it was found that the optimum time to produce the highest percentage of citronella oil yield was at a drying time of 18 hours with a distillation time of 6 hours, namely 1.20%. From the laboratory tests produced, citronella oil with variations in drying time and operating time has a density value ranging from 0.8751gr/ml to 0.8831gr/ml and the best GC-MS test results obtained the amount of citronellol in the sample as much as 15.73% and the amount of geraniol as much as 28.57% has met the Indonesian National Standard (SNI) 2385-2006.Keywords: Solar Cell, Photovoltaic, Citronella Oil, Solar Panel
CALCULATING THE NUMBER OF GAS PILOTS AND LNG CIRCULATING IN THE MABOG LINE (MARINE BOIL OF GAS) COOLING SYSTEM AT PT. PERTA ARUN GAS Birri, Chairul; Sariadi, S; Elwina, E
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.6144

Abstract

ABSTRACTAlong with the development of PT. Perta Arun Gas, the challenges to refinery operations also have a significant impact, the company is expected to be able to minimize even the slightest losses that may occur during the industrial process. One of them is that in the flow of the LNG distribution (loading) process to ships, the formation of Boil-Off Gas (BOG) as a result of the expansion in the loading room is inevitable. So that the BOG that forms must be eliminated so as not to cause overpressure in the ship's tank, the B-6803/4 marine flare facility is available to burn the formed BOG so as not to pollute the environment if the gas is directly discharged into the atmosphere. The main tool in this recovery system is the Atomizer, which aims to reduce the temperature of the BOG by atomizing a certain amount of LNG with pressurized vapor gas into the BOG input flow so that heat transfer occurs so that it is in accordance with the specifications of the compressor feed temperature. After a series of calculations, it was found that the total LNG and gas buffer needed to be able to cool the MaBOG line during the loading process with an estimated time of 12.3 hours was 305.6 m3 for LNG and as much as 0.069 mmscfd for gas buffer. This need is in the background with the adjustment of the outlet temperature setting of the second section atomizer (V 6805/13-24) is -140 °C and with the input temperature in HV-68108 which is -80 °C. In addition, after obtaining a calculation model to obtain the value of LNG and gas buffer requirements, the author also tried to conduct some systematic analyses on the influence of LNG and gas buffer requirements on changes in BOG inlet temperature using MS. Excel.keyword : LNG, Boil-Off Gas, Buffer Gas
MINYAK NILAM : ARTIKEL REVIEW Rihayat, Teuku; Putra, Alfian; Elwina, E
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6363

Abstract

ABSTRAK Minyak nilam komersial diperoleh dengan penyulingan uap daun kering tanaman herba, Pogostemon cablin Benth., milik keluarga Labiatae. Tanaman ini dikenal juga dengan nama P.patchouli Pellet.var. suavis Kait. F. Tanaman ini tumbuh liar di beberapa belahan dunia, namun praktik yang biasa dilakukan adalah membudidayakannya untuk tujuan penyulingan. Tanaman ini dibudidayakan secara luas di Indonesia, Malaysia, Cina dan Brazil untuk diambil minyaknya. Aroma nilam telah dikenal di dunia Timur selama berabad-abad. Pada suatu waktu, memberikan aroma melalui daun kering merupakan hal yang biasa dilakukan. Meskipun hal ini masih berlaku di satu atau dua daerah penghasil nilam untuk aplikasi tertentu, namun di luar negara produksinya, minyak atsiri sulingan uap merupakan media universal. Minyak nilam memiliki profil bau yang sangat kaya yang ditandai dengan hangat, manis, herba, pedas, berkayu, dan balsamic. Harganya relatif murah untuk produk alami dan biasanya tersedia dalam jumlah banyak. Oleh karena itu, minyak nilam sangat banyak digunakan dalam berbagai jenis parfum. Konstituen utama penyumbang bau adalah sekelompok alkohol polisiklik. Yang paling terkenal adalah alkohol nilam, norpatchoulenol, dan nortetrapatchoulol.Kata kunci : minyak nilam, alkohol nilam, norpatchoulenol, dan nortetrapatchoulo
Co-Authors Alfian Putra Birri, Chairul Hafidh, Muhammad Sariadi, S Teuku Rihayat