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All Journal Jurnal Teknologi Prosiding Semnastek JURNAL CITRA WIDYA EDUKASI Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Journal of Applied Sciences and Advanced Technology Jurnal Teknik Mesin Mechanical Xplore
Istianto Budhi Rahardja
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 Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisa Penggunaan Kompressor Angin Bertekanan 6 Kg/Cm² pada Turbin Mini Istianto Budhi Rahardja
JURNAL CITRA WIDYA EDUKASI Vol 3 No 1 (2011): JCWE Edisi Mei 2011
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Turbin mini merupakan prototype dari mesin pembangkit tenaga listrik yang dapat menghasilkan tegangan dan daya listrik. Sumber pendorong yang dipergunakan adalah udara bertekanan kerja 6 kg/cm² dari mesin compressor untuk menggerakkan sudu/impeller turbin mini, dengan jumlah 12 sudu/impler yang terpasang pada rotor. Pergerakkan rotor yang didorong oleh udara bertekanan dihubungkan dengan pulley dan v belt dengan perbandingan 1 : 1 terhadap generator (dynamo) dengan tegangan maksimal 12 volt dan daya 6 watt. Percobaan dilakukan dengan mengubah-ubah tekanan keluar dari nozzle (0,2 kg/cm², 0,4 kg/cm², 0,6 kg/cm², 0,8 kg/cm², 1,0 kg/cm², 1,2 kg/cm², 1,4 kg/cm², 1,6 kg/cm², 1,7 kg/cm) dan lubang keluaran nozzle (2 mm, 4 mm, 6 mm, sampai 8 mm). Semakin tingginya perputaran turbin dan udara bertekanan yang mendorong rotor turbin, maka akan semakin besar pula putaran yang akan menghasilkan tegangan listrik dari generator (dynamo), serta semakin tinggi pula daya yang dihasilkan.
Perhitungan Jumlah Bahan Kimia pada External Water Treatment (Studi Kasus di PMKS XYZ, Kalimantan Tengah) Istianto Budhi Rahardja
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

The Water Treatment Plant is a process of purifying water in a palm oil mill (POM), consisting of external water treatment and internal water treatment which purpose to treat raw water into water that is suitable for use as needed. Addition of chemical with doses that are in accordance with the result of the Jar test will give result that are in accordance with the quality standard parameters in the external water treatment. The determination of these chemicals at PT XYZ has not been in accordance with the composition of raw water processed on that day, thus causing the quality of the water produced to not be in accordance with the specified quality standards and the use of these chemicals to be ineffective and inefficient. The purpose of this research was to determine how to determine the dosage and amount of chemical needed for more effective and efficient water treatment in external water treatment. The result of the research show that the result of the jar test carried out every day will produce a dose of chemical and the number of their needs will be more effective and efficient.
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.
Pembuatan Briket dari Fiber Kelapa Sawit Berperekat Tepung Tapioka dengan Metode Pembakaran Biasa (Karbonisasi) Istianto Budhi Rahardja; Cenda E. Hasibuan; Yudi Dermawan; St Nugroho Kristono
JURNAL CITRA WIDYA EDUKASI Vol 13 No 1 (2021): JCWE Edisi April 2021
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research discusses briquettes making from palm fiber with tapioca starch adhesive by using the conventional burning method (carbonization). Briquettes can be used for household need as well as in other forms of alternative energy, and the alternative energy produced is expected to have quality and be made from renewable raw materials and have cheap economic value. Briquettes are solid fuel derived from organic waste. The purpose of this research was to determine the effect of multiple solvents on the physical properties and quality of the resulting briquettes. This research was conducted at the Chemical Laboratory of Palm Oil Polytechnic, Citra Widya Edukasi on 20202, 11th December – 2021, 9th August. The stages of the research ie: 1) cleaning and drying (12 hour oven at 105° C); 2) carbonization for ± 1.5 hours; 3) powder (sieve 60 mesh); 4) kneading 100 gr with 150 ml 200 ml and 300 ml solvent; 5) printing (paralon) D: 6.5 cm and h: 2.5 cm; and 6) testing of moisture content, ash content, burn time and burn rate. The result showed that in the 300 ml solvent, the resulting briquettes had a lower density than the other samples, and the weight of the briquettes produced in this sample was lighter, and also had large pores.
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 DAN KARAKTERISASI NANOSELULOSA SERBUK DARI TANDAN KOSONG KELAPA SAWIT MENGGUNAKAN ULTRASONIFIKASI Tri Yuni Hendrawati; Efrizon Umar; Anwar Ilmar Ramadhan; Alvika Meta Sari; Mutiara Salsabila; Rahmawati Suryani; Firmansyah Firmansyah; Istianto Budhi Rahardja
Jurnal Teknologi Vol 15, No 1 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.1.159-166

Abstract

Indonesia is the largest palm oil producing country in the world. In the palm oil production process, solid waste is produced, one of which is empty palm fruit bunches (EFB) of 25-26% w/w of the total palm oil raw material. OPEFB has several constituent components such as lignin, hemicellulose and cellulose. The high content of α-cellulose in OPEFB can be used as a base material for making nanocellulose. Nanocellulose was made in this study through delignification, ultrasonication and hydrothermal processes with the aim of obtaining the optimum ultrasonication temperature of nanocellulose. Temperature variations were carried out at 40, 50, 60 and 70 °C for 30 minutes. The results of the synthesis process can be seen visually for each temperature variation. Characterization analysis was performed using SEM (Scanning Electron Microscopy). The correlation between temperature variations (x) to the yield percentage of nanocellulose (y) follows the equation y = 7.921x + 7.345 and R2 = 0.9471. The optimum temperature of the ultrasonication process is 70 °C with a yield of 36.9%. The size of nanocellulose powder is 174.85-460.84 nm with SEM at 70 °C.
STUDI PENGEMBANGAN NANOFLUIDA HIJAU BERASAL DARI BAHAN LOKAL ALAM UNTUK APLIKASI DI BIDANG TEKNIK Kushendarsyah Saptaji; Alvika Meta Sari; Anwar Ilmar Ramadhan; Istianto Budhi Rahardja; Muhammad Dadi Saputra; Firmansyah Firmansyah; Efrizon Umar
Jurnal Teknologi Vol 15, No 2 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.2.345-358

Abstract

The increase in energy demand causes a continuous increase in global temperatures exceeding pre-industrial temperatures with the release of toxic gases and radiation causing severe climate conditions. So, it is mandatory to develop durable and highly efficient thermal systems to overcome these problems. There has been much research into nanofluids to improve performance in thermal applications and have gained significant attention over the past few years due to their superior qualities. Additionally, other undesirable effects such as corrosion of equipment, non-biodegradable by-products occur due to the presence of strong chemicals. Therefore, the development of cost-effective and environmentally friendly nanofluids has emerged as a fast-growing alternative research field with many enthusiasts. The current review provides a comprehensive view of the various techniques used in the preparation of green nanofluids using several natural extracts. The unique morphology, optical properties, stability, high surface area, lower toxicity, and improved thermo-physical properties of green nanoparticles make them favorable choice candidates in enhancing the performance of thermal systems.
SINTESA NANO ZIRKON DARI PASIR ZIRKON LOKAL DENGAN METODE FUSI KAUSTIK SODA-PRESIPITASI-KALSINASI Alvika Meta Sari; Efrizon Umar; Djoko Hadi Prajitno; Rian Fitriana; Anwar Ilmar Ramadhan; Firmansyah Firmansyah; Istianto Budhi Rahardja; Akmal Imam Faisal; Fikriyansyah Fikriyansyah
Jurnal Teknologi Vol 15, No 2 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.2.189-198

Abstract

Indonesia is one of countries that has the potential of mineral natural resources in the form of zircon sand. Zircon sand is a raw material that has the potential to be synthesized into nano zircon because of its ingredients of zircon oxide (ZrO2). In this study the aim was to study the aim to synthesize nano zircon from local zircon sand from Kalimantan using caustic soda-precipitation-calcination modification method. Nano zircon was prepared in this study by modifying existing methods, namely caustic fusion, washing, acid leaching using hydrochloric acid, precipitation using ammonia and calcination processes to produce nano zircon in the form of white powder. The efficiency of the process was analyzed by calculating the yield of the product formed, then the FTIR (Fourier Transform Infra-Red) spectroscopic test was performed to determine the functional groups of nano zircons and the morphology was analyzed using SEM (Scanning Electron Microscopy). Yield obtained is 2.7%  with the size of nano zircon is 41.983 nm. The FTIR spectrum shows the presence of the-Zr-O2 functional group at wave numbers 600 – 700 cm-1.
Co-Authors Abduh Al Afghani Adhes Gamayel Agustiawan Agustiawan Ahdiat Leksi Siregar Ahmad Mahfud Akmal Imam Faisal Alvika Meta Sari Anita Rahayu Anwar Ilmar Ramadhan Azhar Basyir Rantawi Cenda E. Hasibuan Dani Saputra Daruki Daruki Deni Almanda Djoko Hadi Prajitno Dodi Mulyadi Edwin Haryanto Efrizon Umar Efrizon Umar Erlangga Abinanda Ery Diniardi Fikriyansyah Fikriyansyah Firmansyah Firmansyah Gerhard Alex Sitorus Hayya Afifah Januar Parlaungan Siregar Juni Afriani Kezia Alfa Sarandon Kushendarsyah Saptaji M Rifqi Aziz M. Subroto Aliredjo Mohd Hamisa Abdul Hamid Muhammad Dadi Saputra Muhammad Malik Arifandi Muhammad Soleman Muhammad Sopyan Mutiara Salsabila Nana Rahdiana Priyantini Dewi Rahmawati Suryani Rian Fitriana Riyan Ariyansah Samsi Samsi Siti Purwani Sobri Sobri Sobri Sobri Sri Rejeki Ambarita St Nugroho Kristono St. Nugroho Kristono St. Nugroho Kristono Sukarman Sukarman Sukarman Sumanto Teguh Binardi Tri Yuni Hendrawati Yudi Dermawan Yusuf Aditya Nugraha