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All Journal Prosiding Semnastek JURNAL CITRA WIDYA EDUKASI Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Journal of Applied Sciences and Advanced Technology REACTOR : Journal of Research On Chemistry And Engineering
Ahdiat Leksi Siregar
Politeknik Kelapa Sawit Citra Widya Edukasi
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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Pembentukan Biodiesel Melalui Proses Transesterifikasi Dengan Katalis Abu Tandan Kosong Kelapa Sawit (ATKKS) Kezia Alfa Sarandon; Ahdiat Leksi Siregar; Istianto Budhi Rahardja
Prosiding Semnastek PROSIDING SEMNASTEK 2019
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Biodiesel merupakan pengganti bahan bakar solar yang menggunakan bahan nabati sebagai bahan bakunya. Crude Palm Oil (CPO) merupakan salah satu bahan nabati yang akan menghasilkan Fatty Acid Methyl Ester (FAME). Biodiesel ini mempunyai keunggulan untuk mengurangi emisi gas di udara dan bahan baku yang renewable. Pada penelitian ini pembentukan biodiesel diolah dengan dua reaksi yaitu esterifikasi dan transesterifikasi. Proses esterifikasi menggunakan CPO, metanol teknis sebanyak 15% (b/b) dan katalis homogen  98% sebanyak 0,5% (b/b) berguna untuk menurunkan Free Fatty Acid (FFA). Sedangkan transesterifikasi menggunakan katalis Abu Tandan Kosong Kelapa Sawit (ATKKS) yang mempunyai kandungan dengan rasio 2%, 5%, dan 8% berbandingan dengan parameter uji SNI yang dihasilkan. Pada penelitian ini Standar Nasional Indonesia yang dicapai belum memenuhi syarat, dikarenakan pembakaran abu tandan kosong yang belum sempurna.
Pengaruh Jenis Perekat Pada Briket Cangkang Kelapa Sawit Terhadap Waktu Bakar M Rifqi Aziz; Ahdiat Leksi Siregar; Azhar Basyir Rantawi; Istianto Budhi Rahardja
Prosiding Semnastek PROSIDING SEMNASTEK 2019
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Briket arang adalah arang yang diolah lebih lanjut menjadi bentuk briket (penampilan dan kemasan yang menarik) yang dapat digunakan untuk keperluan energi alterntif sehari-hari sebagai pengganti minyak tanah dan gas elpiji. Penelitian ini menggunakan tiga jenis perekat yaitu tepung tapioka, sagu, dan arpus. Perekat berfungsi untuk merekatkan partikel-partikel zat dalam bahan baku cangkang kelapa sawit dengan perbandingan perekat dan air 1:1 untuk tepung tapioka dan sagu, sedangkan perekat arpus dilakukan peroses pemanasan sampai mencair. Tujuan dari penelitian ini mengetahui pengaruh penggunaan jenis perekat pada briket cangkang kelapa sawit terhadap standar kualitas briket, mengetahui pengaruh penggunaan jenis perekat pada briket cangkang kelapa sawit terhadap waktu bakar yang meliputi nilai kalor, kadar air, dan kadar abu. Metode penelitian yang dilakukan yaitu ekperimen dengan variabel cangkang kelapa sawit 100 gram dan 12% perekat yang digunakan. Proses pengambilan data yaitu kadar air dan waktu bakar dilakukan 3 kali pengulangan, nilai kalor dan kadar abu dilakukan 1 kali pengulangan. Hasil pengolahan data didapatkan nilai kalor pada perekat tapioka 6328 kkal/kg, sagu aren 6330 kkal/kg, dan arpus 6366 kkal/kg, kadar air pada perekat tapioka 6,0 %, sagu aren 6,7 %, dan arpus 5,5%, kadar abu perekat tapioka 7,70 %, sagu aren 6,74%, dan arpus 7,11%, dan waktu bakar pada perekat tapioka 78 menit, sagu 74 menit, dan arpus 92,3 menit. Hasil penelitian menunjukan bahwa penggunaan jenis perekat pada briket mempengaruhi standar kualitas briket dan waktu bakar. Semakin rendah kadar air dan kadar abu maka waktu bakar akan semakin lama, semakin besar nilai kalor maka waktu bakar akan semakin lama. Dari hasil analisa yang dilakukan bahwa jenis perekat terbaik adalah perekat arpus.
Karakteristik Briket Pelepah Kelapa Sawit Menggunakan Metode Pirolisis Dengan Perekat Tepung Tapioka Dani Saputra; Ahdiat Leksi Siregar; Istianto Budhi Rahardja
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v3i2.1973

Abstract

The energy crisis in Indonesia is marked by the increasing scarcity of fuel oil in the midst of society. One of the alternative energy sources is charcoal briquettes, where the ingredients are derived from solid waste from palm fronds. This study aims to determine the characteristics of oil palm midrib briquettes with 50% tapioca flour adhesive. The palm fronds were chopped to a size of ± 5 cm and then put into the pyrolysis chamber. Oil palm fronds were burned with a little oxygen at a temperature of 200-300⁰C for 3 hours. The result of pyrolysis combustion from oil palm fronds in the form of charcoal, then ground and filtered with a mesh of 60. The charcoal is glued with tapioca flour in a ratio of 2:1. Briquette testing is carried out at the Briquette Testing Laboratory provider to determine the parameters of combustion time, calorific value, moisture content, ash content, and carbon content that occur. From the test results, the following parameters are obtained: the average burning time is 1 minute/gr, the calorific value is 5.361kcal/kg wet basis and 5.863 kcal/kg dry basis, the water content is 8.56%, the ash content is 6.84 % wet basis and 7.48% dry basis, volatile matter is 36.96% wet basis and 40.42% dry basis and fixed carbon 47.64% wet basis and 52.10% dry basis.
Kajian Pengaruh Perbedaan Rasio Penambahan Limbah Cair Pabrik Kelapa Sawit (LCPKS) terhadap Rasio C/N Kompos Tandan Kosong Kelapa Sawit (TKKS) dengan Penambahan Aktivator BAR Formula (Studi Kasus di PT Alamraya Kencana Mas, Kalimantan Selatan) Ahdiat Leksi Siregar
JURNAL CITRA WIDYA EDUKASI Vol 11 No 1 (2019): JCWE Edisi April 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research porpose to determine the effect of the difference in the ratio of addition of Palm Oil Mill Liquid Waste (POMLW) to the C/N ratio of Palm Oil Empty Bunch (POEB) compost with the addition of formula BAR activator at PT Alamraya Kencana Mas, South Kalimantan Province. The method of data collection was conducted through interview with informants who knew the field of POEB composting, observation to the POEB composting area, and literature review in the form of a daily report on the composting process. Based on the study conducted, it was concluded that composting of POEB fiber by the addition of POMLW and Formula BAR activators took 45 days with the process stages, namely: 1) POEB stacking; 2) watering with POMLW; 3) inoculation with activator BAR Formula; 4) reversal with excavator; 5) milling with macerator; and 6) harvesting. The difference in the ratio of POMLW addition has a significant effect on compost maturity as indicated by the C/N ratio.
Pengaruh Pengutipan Minyak Ex-Empty Bunch Press terhadap Kadar Free Fatty Acid (FFA) Minyak Produksi (Studi Kasus PT Sawindo Kencana, Bangka Belitung) Azhar Basyir Rantawi; Ahdiat Leksi Siregar; . Zaitun
JURNAL CITRA WIDYA EDUKASI Vol 11 No 1 (2019): JCWE Edisi April 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This reserach purpose to determine the FFA level of production oil when blending with oil from the recovery tank which is the result of blending ex-empty bunch press and fat pit oil. The solution to the problem that arises due to the condition of the FFA is to find an alternative solution, which is to drain the ex-empty bunch press oil in the temporary reservoir. The result showed that the oil FFA content of the production when blending with oil from the recovery tank was 4.72%; while the oil FFA from the recovery tank was 16.22%. FFA levels in the production oil can be reduced to 3.04% after repairs to the ex-empty bunch press oil citation system.
Perhitungan Debit Uap Boiler dan Ketercapaian Kebutuhan Uap Pabrik Kapasitas 45 Ton/Jam Bekti Santoso; Ahdiat Leksi Siregar; Indriana Lestari
JURNAL CITRA WIDYA EDUKASI Vol 11 No 2 (2019): JCWE Edisi Agustus 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

A Boiler is an energy conversion machine that converts water to steam, which occurs due to continuous heating. The steam produced can be used for all equipment that requires steam at a palm oil mill (POM), especially power turbines. In addition, other equipment are sterilizers, pressing station, kernel recovery station and clarification station. The quality and quantity of steam produced must be based on their need, because if it is not achieved it will disrupt the processing in the POM. This study purpose to calculate the quantity of steam needed for palm oil processing in POM. This research was conducted on May 7th until May 12th, 2018. This study used a descriptive method with data gathering techniques by observation, documentation and interview. The result showed that the average steam discharge was 30,523 Kg/hour, while the steam requirement for turbine operation with an actual power of 1,200 Kw was 26,400 Kg and for the palm oil processing was 24,750 Kg/hour. Steam discharge generated by the boiler is over than the mill capacity of 45 Tons/hour, so that the steam discharge generated by the boiler is sufficient to meet the steam need in the POM.
Pengaruh Jumlah Lubang pada Body Lori terhadap Perbandingan Oil Losses in Empty Bunch dan Oil in Condensate Istianto Budhi Rahardja; Ahdiat Leksi Siregar; Siti Purwani
JURNAL CITRA WIDYA EDUKASI Vol 11 No 3 (2019): JCWE Edisi Desember 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Palm Oil Mill (PKS) there are oil losses that cannot be eliminated, but it can be minimized, among them are the oil losses in empty bunch and the oil in condensate. The standardization of oil losses in empty bunch in POM is ≤ 2.25% (oil/wet matter), while the standardization of oil in condensate is ≤ 1% (oil/wet matter). The relationship of oil content contained in the empty bunch to condensate is due to the influence of holes in the body of the buggy. Thus, trials were carried out on two buggy units in the POM, ie buggy with 461 holes and 572 holes. The purpose of this research was to determine the value of the ratio of oil losses in empty bunch to the two buggy design. This research was conducted on May 27th – 29th, 2018. Data collection using literature study and observation method. The result showed that the buggy with in 461 holes resulted in 2.58% oil loss in empty bunch, more than the buggy with in 572 holes, ie 2.00%; and conversely, the buggy with in 572 holes resulted 1.05% oil in condensate, more than the buggy with in 461 holes, ie 0.88% only.
Water Tube Boiler Pabrik Kelapa Sawit Kapasitas 45 Ton/Jam Istianto Budhi Rahardja; Erlangga Abinanda; Ahdiat Leksi Siregar
JURNAL CITRA WIDYA EDUKASI Vol. 14 No. 1 (2022): JCWE Edisi April 2022
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

The use of steam power plants in palm oil mills is still a profitable alternative to use, therefore in-depth knowledge of various matters relating to steam power generation systems is required. The main function of the boiler is to produce steam which is used in the sterilization process for processed palm oil and is also used in the clarification process of crude palm oil (CPO). Apart from the above functions, one boiler unit in the palm oil mill is also used to generate electrical energy which is used to support the production process and needs in the palm oil mill environment. In a boiler system, the readiness and conditioning of the equipment need to be considered in order to meet the planned production targets. Good efficiency needs to be maintained in a boiler, by conducting periodic inspections and checking of the components in the boiler. Then, a boiler also functions as a vital tool in a crude palm oil (CPO) processing plant.
Fiber Cyclone Palm Oil Mill Capacity 45 Tons/Hour Istianto Budhi Rahardja; Juni Afriani; Ahdiat Leksi Siregar; Daruki Daruki; Deni Almanda; Firmansyah Firmansyah; Anwar Ilmar Ramadhan; Mohd Hamisa Abdul Hamid
Journal of Applied Sciences and Advanced Technology Vol 5, No 2 (2022): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.5.2.67-76

Abstract

The processing of Fresh Fruit Bunches into crude palm oil and palm kernel can be done by starting to boil the Fresh Fruit Bunches until they are ripe, after the Fresh Fruit Bunches are ripe, then separate the bunches from the fiber by going through the slaughtering process, after which the fiber is then chopped and immediately pressed so that the oil comes out. After the oil and fiber are separated, the fiber will go to the fiber cyclone. Fiber cyclone is a device located at the solids station, the main function of the fiber cyclone is to separate the nut and fiber by sucking the fiber using air, through the ducting column and will exit through the air lock and then go to the boiler to be used as fuel. The fiber cyclone has a speed of 10.08 m/s for the velocity box, a vertical column of 6.86 m/s, and 8.57 m/s for the horizontal column. Fiber cyclone has 1 loss point for kernel, what is analyzed is the output of fiber cyclone which is fiber taken from air lock, the standard loss for fiber cyclone is 0.10%.
Sintesis Biooil dari Limbah Pelepah Kelapa Sawit Berbasis Metode Pirolisis Hendra Saputra; Ahdiat Leksi Siregar; Rahma Yusni Oktavia; Dimas Frananta Simatupang
REACTOR: Journal of Research on Chemistry and Engineering Vol 4, No 1 (2023): Published in June 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v4i1.68

Abstract

Biooil is a liquid obtained from cracking lignocellulose structures into simpler compounds from the pyrolysis process. The lignocellulose content in palm midrib can be used as a raw material for making biooil. This study examines the effect of the length of time burning at a temperature of 250 ℃ on the physical and chemical characteristics of the resulting biooil. The independent variable was pyrolysis time with 1 hour, 2 hours, and 3 hours. The parameters used to determine the quality of biooil are specific gravity, pH, color, and composition of biooil by GC-MS instrument. From the results obtained, the highest yield of biooil was 7.9945% from sample with 2 hours pyrolysis time. The quality of biooil showed the average pH ranged between 2.65–3.08 and the average density ranged from 1.0485 to 1.1055. The visual of biooil was dark brown color with the largest biooil content being Cis-Vaccenic acid.
Co-Authors . Zaitun Anwar Ilmar Ramadhan Azhar Basyir Rantawi Bekti Santoso Dani Saputra Daruki Daruki Deni Almanda Dimas Frananta Simatupang Erlangga Abinanda Firmansyah Firmansyah Hendra Saputra Indriana Lestari Istianto Budhi Rahardja Juni Afriani Kezia Alfa Sarandon M Rifqi Aziz Mohd Hamisa Abdul Hamid Rahma Yusni Oktavia Siti Purwani