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All Journal Scientific Contributions Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI (LPMGB)
Riesta Anggarani
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Chemical Engineering, Chemistry & Bioengineering Energy

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THE INFLUENCE OF BIODIESEL BLENDS (UP TO B-20) FOR PARTS OF DIESEL ENGINE FUEL SYSTEM BY IMMERSION TEST Riesta Anggarani; Cahyo Setyo Wibowo; Emy Yuliarita
Scientific Contributions Oil and Gas Vol 38 No 1 (2015)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.38.1.538

Abstract

The Government of Indonesia will implement the mandatory policy on the use of Diesel Fuel and Biodiesel mixture with minimum 20% volume of biodiesel (B-20) start from 2016. From technical point of view, compatibility issue becomes one of the problems to be considered by automotive industries. The concern relate with solvent characteristic of biodiesel, which cause the biodiesel and its blends react with the parts of fuel system, especially the elastomers. This work is aimed to identify the material constructed the fuel system parts, including metal and non-metal parts, which has good compatibility to biodiesel blends up to B-20. Identifi cation of the parts material was done by FTIR and DSC for non-metal parts and by XRD and XRF for metal parts. The immersion test is used to compare the effect of fi ve biodiesel-diesel fuel blends (B-0, B-5, B-10, B-15, and B-20) to the physical change of metal and non-metal parts of diesel fuel system in a 2500 hours test period. The physical change being checked is the weight of the parts. The result obtained that for immersed metal parts, the change of weight occurred in the range of 0.007% to 0.595%. The higher weight change obtained by non-metal parts in the range of 0.001% to 13.85%. The lowest change was shown by metal parts consists of an alloy of CuO, Al2O3 and SiO, whether for non-metal parts was shown by a polymer type of Fluoroviton A. Through FTIR analysis we also observed that fuels composition before and after immersed with the tested parts were not change signifi cantly means that effect of solvent characteristic of biodiesel in the fuel mixture is negligible.
Performance Test Of Calophyllum Inophyllum Biodiesel On a Small Mono-Cylinder 5 Kva Diesel Generator Riesta Anggarani; Cahyo S Wibowo; Maymuchar Maymuchar
Scientific Contributions Oil and Gas Vol 36 No 2 (2013)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.36.2.662

Abstract

Demand of diesel fuel for villagers in rural area of Indonesia is getting higher recently. Electricity and diesel fuel shortage are forcing them to find alternative energy sources for their activities. One of the promising energy sources is Calophyllum inophyllum, which commonly grow in low-land and coastal region. In present work, methyl ester obtained from Calophyllum inophyllum were used on a 5 kVA diesel generator, pure and in 50% blend with commercial diesel fuel which also used pure as reference. A performance test cycle for each fuel was conducted with the aim of taking data of cold and warm start up time, fuel consumption, and exhaust gas emission. In the analysis of cold and warm start up time test result, it revealed that 50% blended of diesel fuel and Calophyllum inophyllum increases both cold and warm start up time when compared to pure diesel fuel and the time got higher for pure Calophyllum inophyllum biodiesel. In the result of fuel consumption, 50% blended fuel increases fuel consumption for 10.8% whereas pure biodiesel increases 16.8% fuel consumption. Analysis on the exhaust gas emission resulted that the use of Calophyllum inophyllum biodiesel and its blend decrease the CO2 emission while CO and HC emission increases. The NOx emission and the opacity of exhaust gas increase for biodiesel blend, similar results were also obtained for pure biodiesel.
Analysis On Dimethyl Ether (Dme) Characteristics As A Liquid Petroleum Gas (Lpg) Fuel Substitution For Household Stove Cahyo Setyo Wibowo; Riesta Anggarani; Dimitri Rulianto; Lies Aisyah
Scientific Contributions Oil and Gas Vol 36 No 3 (2013)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.36.3.768

Abstract

Increasing growth of population will lead to increasing energy needs; therefore it is necessary to find alternative energy other than fossil fuel. Currently, energy sources in Indonesia are mainly derived from oil and natural gas such as LPG. Starting from 2008, LPG demand increased significantly for households and small industries as a result of government policy on conversion of kerosene to LPG. To meet this demand, the government imports LPG up to 2 million tons per year. In order to overcome LPG crisis, an alternative energy is required to be developed without changing either the distribution system, technical or commercial used. An option among others is dimethyl ether (DME) derived from low calori’s coal gasification. In this research analysis characteristics of DME is compared to LPG (as fuel reference) used. The test methods carried out refers to the specification of LPG issued by Directorate General of Oil and Gas. Based on the results, it shows that the characteristics of the fuel LPG mixed with DME 20% and 50% have some good results particularly on physical and chemical properties, stability and homogeneous of gas. Hence, LPG mixed DME 20% and 50% can be used as a substitute fuel for household stove.
The Effect of Methanol-Gasoline (M20) and Ethanol-Gasoline (E20) Blends on Material Compatibility Nurmajid Abdurrojaq; Rizal Zaelani; Belva Adam Haley; Nur Allif Fathurrahman; Riesta Anggarani; Cahyo Setyo Wibowo; Maymuchar Maymuchar
Scientific Contributions Oil and Gas Vol 45 No 2 (2022)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.45.2.1183

Abstract

Alcohol has the potential to be used as an alternative to fossil fuels to reduce total emissions from spark-ignition (SI) engines. The impact of a mixture of 20% methanol and ethanol in gasoline on the compatibility of Ethylene Propylene Diene Monomer (EPDM) and polyamide materials, which are used as fuel hoses in SI vehicles, is presented in this study. The immersion test methodology was employed to study the influence of both types of alcohol on gasoline blend to compatibility properties i.e., hardness and weight change. Based on the result, EPDM and polyamide materials have different characteristics of material compatibility with E20 and M20. Tests on M20 and E20 fuel samples on EPDM material show a higher effect on hardness by 5-9% than pristine gasoline. Additionally, there was no change in the weight of the polyamide material in the RON 90, E20, and M20 test samples. However, there was a change in the hardness of the polyamide material by 6-11% in RON 90, E20, and M20 fuels. Moreover, there was no change in the FTIR spectrum, indicating that there was no dissolution of the EPDM and polyamide materials into the test fuel for 6 weeks of immersion.
PENGARUH BIODIESEL BERBASIS MINYAK KELAPA SAWIT TERHADAP COLD-FLOW PROPERTIES MINYAK SOLAR 48 DAN MINYAK SOLAR 51 Nur Allif Faturrahman; Cahyo S. Wibowo; Riesta Anggarani; Risvita B. Anugrah; Kemal Ginanjar; Gian Akmal; Rizal Zaelani; Majid Abdurrojak; Wahyu N. Hidayat; Marsha Katili; Rossy D. Devitasari; Saepul Bahtiar; Hadi Mulyadi; Sylvia Ayu Bethari; Lies Aisyah; Maymuchar Maymuchar
Lembaran publikasi minyak dan gas bumi Vol 54 No 2 (2020)
Publisher : BBPMGB LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/LPMGB.54.2.500

Abstract

Cold-flow properties merupakan parameter kunci dalam menganalisis ketahanan bahan bakar pada temperatur rendah. Penelitian ini menyajikan analisis cold-flow properties, meliputi titik kabut dan cold filter plugging point (CFPP) dari bahan bakar campuran minyak solar-biodiesel. Analisis varians (ANOVA) dilakukan untuk mendapatkan signifikansi dari pengaruh rasio pencampuran minyak solar-biodiesel terhadap titik kabut dan CFPP bahan bakar. Hasil penelitian menunjukkan rasio pencampuran minyak solar-biodiesel berpengaruh signifikan terhadap titik kabut dan CFPP bahan bakar. Keragaman titik kabut dan CFPP dari basis Minyak Solar 48 dan Minyak Solar 51 dipengaruhi oleh rasio pencampuran biodeisel dengan nilai > 96,7%. Hasil eksperimen menunjukkan cold-flow properties bahan bakar campuran minyak solar-biodiesel dapat diprediksi dengan menghubungkan temperatur awal titik kabut atau CFPP minyak solar murni, dengan rasio pencampuran melalui persamaan model matematika.
Perbandingan Uji Densitas Menggunakan Metode ASTM D1298 dengan ASTM D4052 pada Biodiesel Berbasis Kelapa Sawit Nurmajid Abdurrojaq; Rossy D. Devitasari; Lies Aisyah; Nur A. Faturrahman; Saepul Bahtiar; Widi Sujarwati; Cahyo S. Wibowo; Riesta Anggarani; Maymuchar Maymuchar
Lembaran publikasi minyak dan gas bumi Vol 55 No 1 (2021)
Publisher : BBPMGB LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/LPMGB.55.1.576

Abstract

Parameter densitas merupakan salah satu karakteristik yang penting, baik dari aspek perhitungan kandungan energi maupun faktor konversi satuan dalam jual-beli. Secara eksperimen laboratorium, terdapat dua metode acuan untuk mengukur densitas bahan bakar, yaitu ASTM D1298 dan ASTM D4052. Penelitian ini menyajikan perbandingan hasil pengukuran densitas antara metode manual, ASTM D1298, maupun metode otomatisasi pada ASTM D4052, menggunakan sampel biodiesel berbasis kelapa sawit. Hasil pengukuran densitas biodiesel pada berbagai temperatur, termasuk pengukuran pada temperatur acuan spesifikasi biodiesel di Indonesia, yaitu 40oC, dan temperatur densitas standar internasional, yaitu 15oC. Hasil penelitian menunjukkan, suhu observasi mempengaruhi nilai densitas dari biodiesel. Semakin rendah suhu pengujian maka semakin besar nilai densitas yang dihasilkan, yang teramati pada 2 metode pengujian ini. Pengukuran densitas dengan metode ASTM D1298 memiliki kekurangan untuk suhu observasi yang lebih rendah dari 18°C karena memanfaatkan kondisi visual oleh penglihatan. Dengan metode tersebut pengujian suhu dibawah 18°C untuk mengukur densitas biodiesel berbasis kelapa sawit mengalami bias pembacaan skala hidrometer akibat kondisi pengujian yang mendekati titik kabut biodiesel.
Peningkatan Kinerja Pompa Air 3 Inchi Dengan Bermesin Penggerak 5,5 Hp Berbahan Bakar LPG Faqih Supriyadi; Cahyo Setyo Wibowo; Maymuchar Maymuchar; Nanang H; Riesta Anggarani
Lembaran publikasi minyak dan gas bumi Vol 52 No 3 (2018)
Publisher : BBPMGB LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/LPMGB.52.3.726

Abstract

Ada banyak jenis mesin penggerak pompa air yang digunakan untuk irigasi pertanian. Diantaranya adalah mesin penggerak pompa air berbahan bakar solar dan berbahan bakar bensin. Diantara kedua jenis mesin penggerak pompa air tersebut, yang paling banyak digunakan untuk mendukung kegiatan pertanian oleh petani kecil adalah mesin pompa air 3 inchi berbahan bakar minyak jenis bensin dikarenakan harganya yang terjangkau, mudah dibawa dan mudah dipindahkan dari tempat satu ke tempat lain. Akan tetapi, pada saat ini harga bensin dirasa terlalu mahal oleh para petani kecil dan ketersediaannya yang susah untuk didapatkan di sekitar lahan pertanian, sehingga diperlukan bahan bakar alternative yang dapat digunakan pada mesin penggerak pompa air berbahan bakar bensin tanpa merubah spesifi kasi dari mesin tersebut. Salah satu bahan bakar alternative tersebut adalah Liquefi ed Petroleum Gas (LPG) karena LPG dan bensin sama-sama memiliki sifat parameter pengujian nilai angka oktana riset (RON), bahkan LPG memiliki nilai RON lebih tinggi dibandingkan dengan bensin yang ada saat ini, sehingga LPG dapat digunakan sebagai bahan bakar substitusi bagi mesin pompa air dengan sistem pengapian spark plug (busi). Untuk dapat menggunakan LPG, pada mesin pompa air perlu dilakukan modifi kasi pada saluran bahan bakar menjadi system bi-fuel dengan menambahkan peralatan konversi (conversion kit). Adapun bahan bakar LPG yang digunakan adalah LPG 3 kg yang telah digunakan secara luas untuk masyarakat sehingga tersedia diberbagai lokasi. Untuk mengetahui kinerja pompa, kemudahan dalam pengoperasian dan faktor keselamatan bagi pengguna di sektor pertanian, diperlukan penelitian di laboratorium. Penelitian terhadap kinerja pompa air 3 inchi dengan mesin penggerak berbahan bakar LPG ini dilakukan untuk mengetahui Total Head dan Debit yang dihasilkan untuk dibandingkan dengan kinerja mesin berbahan bakar bensin RON 88 dan sebagai acuannya adalah pompa air yang digerakkan oleh motor listrik. Metode uji yang digunakan adalah SNI 0141-2009/Amd 2:2015. Dari hasil penelitian diperoleh bahwa kinerja pompa air 3 inchi yang digerakkan oleh mesin 5,5 hp berbahan bakar bensin 88 dan LPG tidak terjadi perbedaan yang signifi kan.
Co-Authors Belva Adam Haley Cahyo S Wibowo Cahyo S. Wibowo Cahyo Setyo Wibowo Dimaz Warahadi Dimitri Rulianto Emy Yuliarita Faqih Supriyadi Gian Akmal Hadi Mulyadi I Made K Dhiputra Kemal Ginanjar Lies Aisyah Majid Abdurrojak Marsha Katili Maymuchar Maymuchar Maymuchar Nanang H Nanang Hermawan Nur A. Faturrahman Nur Allif Fathurrahman Nur Allif Faturrahman Nurmajid Abdurrojaq Reza Sukaraharja Risvita B. Anugrah Rizal Zaelani Rossy D. Devitasari Saepul Bahtiar Sylvia Ayu Bethari Wahyu N. Hidayat Widi Sujarwati Yogi Pramudito