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

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PALM OIL BIODIESEL: CHALLENGES, RISKS AND OPPORTUNITIES FOR REDUCING AND REPLACING THE NON-RENEWABLE FOSSIL FUEL DEPENDANCY - A REVIEW Erinto Simbolon; Lies Aisyah
Scientific Contributions Oil and Gas Vol 36 No 1 (2013)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.36.1.645

Abstract

Biodiesel is a renewable source of energy which is expected to play a signifi cant role for reducing andreplacing the existing non-renewable fossil fuels. Palm oil is one source of biodiesel feed stock which hasbeen used for many years and gave so many advantages such as high oil yield, cheap to produce and torefi ne, has similar characteristics with petroleum-derived diesel, and has lower emission. However, someissues, such as food stock security, land use changes, and biodiversity extinction, have arisen which needto be considered and solved wisely. Life cycle assessment (LCA) study shows a positive net energy and anet positive sequestration on GHG emission (up to some level of conversion from palm oil to biodiesel)which means biodiesel from palm oil has a high potential to replace fossil fuel and also an environmentalfriendly fuel.
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.
A Review Of Biodiesel Development In Indonesia: Current Status, Future Potential And Its Impact On The Environment Lies Aisyah; Cahyo Setyo Wibowo
Scientific Contributions Oil and Gas Vol 34 No 3 (2011)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.34.3.804

Abstract

Indonesian government issued National Energy Policy in 2006 that will reduce role of fossil fuels and increase role of renewable energy in 2025 as a target year. Bio-fuels are one of the renewable energy focuses in Indonesia. In 2009, biodiesel production capacity was 1.12 tons per year and expected to rise every year. Target of biodiesel usage increasesgradually from B-10 in 2006-2010, B-15 in 2011-2016 and B-20 in 2016-2025. The policy and its target are set by the government to diversification energy source, to boost economic growth (especially regional development and creation of employment) and to reduce greenhouse gas emissions. Currently the main feedstock of biodiesel in Indonesia is derived from palm oil. Some concerns arise related to palm oil biodiesel such as competition between food versus energy and environmental issue in particular replacing forest to oil palm plantations and biodiversity loss. Therefore, development of biodiesel feedstock from non-edible crops and can be grown in non-arable land are very important for future biodiesel development in order to eliminate competition with food and prevent deforestation and biodiversity loss.
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.
Co-Authors Cahyo S. Wibowo Cahyo Setyo Wibowo Dimaz Warahadi Dimitri Rulianto Dimitri Yulianto Erinto Simbolon Gian Akmal Hadi Mulyadi Kemal Ginanjar Majid Abdurrojak Marsha Katili Maymuchar Maymuchar Maymuchar Nanang Hermawan Nur A. Faturrahman Nur Allif Fathurrahman Nur Allif Faturrahman Nurmajid Abdurrojaq Reza Sukaraharja Riesta Anggarani Risvita B. Anugrah Rizal Zaelani Rossy D. Devitasari Saepul Bahtiar Sylvia Ayu Bethari Wahyu N. Hidayat Widi Sujarwati Yogi Pramudito