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Jurnal Teknologi
Published by Politeknik Negeri Lhokseumawe
ISSN : 14121476     EISSN : 25500961     DOI : http://doi.org/10.30811/teknologi
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Jurnal Teknologi is a peer-reviewed journal that aims at the publication and dissemination of original research articles on the latest developments in all fields of technology and engineering sciences. The journal publishes original papers in Indonesian and English, which contribute to the understanding of engineering science and the improvement of engineering technology. Papers may be theoretical, experimental, or both, and applied engineering science and technology. The articles submitted to Jurnal Teknologi should be unpublished before and not under consideration for publication elsewhere. The scope of Jurnal Teknologi includes a wide spectrum of technology and engineering science subjects including: Civil engineering; Mechanical engineering; Chemical engineering Electrical engineering; Information and technology; Computer science and engineering; Materials science and engineering; Renewable energy engineering;
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 136 Documents
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Monitoring Power Meter terhadap Power Faktor Berbasis Modbus Master Simulator Wibowo, Sunu Hasta; Suriansyah, Bambang; Rachman, Syaiful
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this study, the emphasis is on a power meter, a device that already has the ability to display measurements of electrical energy usage. This power meter is very useful for monitoring the amount of electrical energy used, and there are various parameters of electrical energy used such as voltage (V), energy (Kwh), current (A), reactive power (Kvar), power factor (pf), power (Watt), and others. Currently, the common monitoring system is a monitoring system that uses a power energy meter as a medium for reading electrical quantities and its visual display. So to monitor the electrical panel to analyze the power factor (pf) against performance in the laboratory room, this study uses a power meter type PM 1200 based on the Modbus Master Simulator to be able to display visually and in real time, in order to ease the task of recording data manually. So that the results are obtained with different power factors (pf) when the electrical load changes in the room, with a power factor of 0.9644 and 0.576 with different electrical loads.
Pemanfaatan Bahan Aditif untuk Menaikkan Nilai Kalor Briket dari Sampah Kota Lhokseumawe Kartini, Kartini; Irwan, Irwan; Saifuddin, Saifuddin
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5857

Abstract

This research is the manufacture of briquettes from organic waste which added additives in the form of coconut shell charcoal and wood charcoal using oil and kaolin adhesives. The purpose of the study was to see the quality of briquettes based on constituent materials with a comparison of organic waste and additives. Add additives in the form of coconut shell charcoal and wood charcoal which are varied by 10%, 15%, 20%, 25% and 30% to organic waste then made briquettes. Organic waste mixed with additives has previously been euyeumized for about 12 days and dried until the moisture content of organic waste is a maximum of 10%. Briquette analysis carried out is analyzing water content, ash content, volatile levels, carbon content, and calorific value. From the results of the study, the following data were obtained, the amount of additives added greatly affects the quality of the briquettes produced, In the addition of 20% coconut shell charcoal additives, the results were obtained namely 1% moisture content, 13.60% ash content, 13.68% volatile content and 5,641 cal/g calorific value, The addition of 15% wood charcoal additives obtained results that were 3% moisture content, 13.28% ash content, 8.07% volatile content and 5,809 cal/g calorific value. Overall a good briquette is obtained at the ratio of adding wood charcoal additives + coconut shell charcoal 25%, which is 1% moisture content, ash content 9.37%, volatile content 13.68% and calorific value 6010 cal/g. All test results have met the Indonesian National Standard (SNI).
Pemanfaatan Ekstrak Kulit Buah Naga Merah (Hylocereus Polyrhizus) sebagai Pewarna Alami dan Antioksidan pada Sediaan Lip Cream Rahmi, Nur Atikah; Elwina, Elwina; Nahar, Nahar
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5602

Abstract

Dragon fruit peel has higher antioxidant activity than dragon fruit peel. Dragon fruit skin can be used as an additional active ingredient in lip cream formulas. This study aims to make cosmetic lip cream from natural ingredients and test its antioxidant activity. Dragon fruit skin extraction was carried out using ethanol as a solvent with the maceration method. Maceration is carried out 3x24 hours. This study used various concentrations of dragon fruit peel extract 3 ml, 5 ml, 7 ml, 9 ml, 11 ml with various carnauba wax concentrations of 0.25 gram, 0.50 gram, 0.75 gram, 1 gram, 1.25 grams. The tests carried out included pH test, irritation test, antioxidant activity test using the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method, and organoleptic test. The results showed that the best lip cream with a composition of 11 mL dragon fruit peel extract with 0.50 and 0.75 gram carnauba wax had a pH value of 4.7 and 4.8 according to the lip pH standard, namely 4.5-8 SNI 16-4769 -1998, the negative irritation test value for redness, itching and swelling showed that the lip cream preparation did not irritate the lips and the organoleptic test results had an average colour, aroma and texture value of 2.1.
Pemanfaatan Limbah Ampas Tebu (Bagasse) sebagai Bahan Baku Pembuatan Karbon Aktif Salsabila, Cut Nuraini; Thahirah, Afifah; Saskia, Saskia; Zaini, Halim
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5843

Abstract

Activated carbon (activated charcoal) is a porous solid that contains 85-95% carbon, produced from materials containing carbon by heating at high temperatures. The aim of this research is to determine the effect of variations in carbonization temperature on the final results of making activated carbon and to determine the effect of variations in the size of activated carbon particles on the final results of making activated carbon. The manufacture of activated carbon is carried out in 2 stages, namely the carbonization process using the pyrolysis method and activation using the chemical HCl 0.1 N. Activated carbon from sugar cane bagasse is made by varying the carbonization temperature of 250°C, 350°C, and 400°C with particle sizes 80 mesh, 100 mesh, and 120 mesh. The best activated carbon from the results of this research was found in activated carbon with a carbonization temperature of 250°C with a particle size of 120 mesh. This activated carbon has a yield value of 40%, water content of 1.89%, ash content of 5.72%, and iodine absorption capacity of 1,1447.0 mg/g.
Pengurangan Emisi pada Kendaraan Menggunakan Kaolin Alam sebagai Adsorben di Kota Lhokseumawe Putra, Alfian; Wijaya, Nanang R; Fauzan, Reza; Handayani, Utari
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5878

Abstract

This study aims to utilize kaolin as a membrane to reduce CO emissions in vehicles. The study was designed with constant variables including 10% PVA, 10% TiO2 catalyst, 8% starch adhesive, and 130 ml of distilled water, resulting in a total mixture weight of 140 grams. The membrane dimensions were 70 mm in length and 50 mm in diameter, with 19 holes of 3 mm each. Independent variables included kaolin carbon ratios (6:1, 5:1, 4:1, 3:2, 1:1) % of total mixture weight, engine rotation (1000, 2000, and 3000) rpm, and sintering temperatures (800°C, 900°C).The CO absorber is a component of the exhaust system designed to reduce carbon monoxide content in exhaust gases from internal combustion engines. CO absorbers typically consist of noble metal catalyst plates (such as platinum, palladium, and rhodium) embedded on ceramic or metal substrates. When exhaust gases pass through the CO absorber, catalytic reactions occur on the catalyst surface, converting carbon monoxide into carbon dioxide (CO2), which is safer for the environment. The study results showed that membranes with a composition of 65.8 g kaolin and 35 g activated carbon absorbed 84.64% of CO exhaust gases, achieving a final CO concentration of 0.80% at 1000 rpm. At 2000 and 3000 rpm, membranes with a composition of 72.8 g kaolin and 28 g activated carbon absorbed 90.45% and 92.31% of CO exhaust gases, with final CO concentrations of 0.57% and 0.54%, respectively. These results comply with the Ministerial Regulation No. 05 of 2006, which sets the CO emission threshold at 1.5% for the year 2007.
Perancangan dan Aplikasi Distilasi Minyak Serai Wangi Menggunakan Photovoltaic dengan System Tenaga Hybrid Mutia, Ulfa; Rihayat, Teuku; Syafruddin, Syafruddin
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5639

Abstract

UUtilization of sunlight is currently very effective as a renewable energy. Photovoltaic systems are modules that are used to absorb heat exposed to sunlight which is converted into electrical energy. The amount of potential sunlight that can be absorbed depends on the size of the cell and the absorption capacity of solar cells against sunlight. This study uses 4 solar panels to produce heat which is used for the essential oil production process. The total power that can be generated within 6 hours is 8664 kJ. Based on the test results of the distillation tool design using solar cells, energy absorption efficiency is not 100% absorbed due to lost energy and the number of solar panels used has not reached the power requirement, but to overcome this, during the study a hybrid power system was also used, where power is also supplied from the mains National Electric Company (PLN). Test results on citronella oil (Chimbopogan Nardus L) are close to SNI standards. The optimum drying time to produce the highest % yield is 1 day of drying time with 6 hours of distillation time. The results of citronella produced met Indonesian quality standards, where the density test value was 0.8869, and Gas Chromatography-Mass Spectrometry (GC-MS), namely citronella content of 15.75% at a retention time of 15.875 minutes. Geraniol content in essential oil was obtained at 28.70% retention time of 18.050 minutes which are within the range of the Indonesian National Standard (SNI) 2385-2006.
Penggunaan Fly Ash dan POFA sebagai Filler dalam Modifikasi Campuran Aspal Hotmix AC-BC ST., MT, Syaifuddin Din; Kurniati, Kurniati; Gusrizal, Gusrizal; Miswar, Miswar; Ulfa, Nadia
Jurnal Teknologi Vol 25, No 1 (2025): April 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i1.6657

Abstract

This study evaluates the use of POFA (Palm Oil Fuel Ash) and Fly Ash as fillers in Asphalt Concrete-Binder Course (AC-BC) mixtures. POFA was sourced from palm oil processing plants, while Fly Ash was obtained from coal-fired power plants. The research aims to identify the optimal filler composition by varying the proportions of POFA and Fly Ash, ranging from 0% to 100% POFA. Marshall parameter tests were conducted to assess stability, flow, VIM (Void in Mix), VMA (Void in Mineral Aggregate), and Marshall Quotient. The results show that POFA significantly improves the stability of the asphalt mixture compared to Fly Ash, with the highest stability observed at 100% POFA. However, increasing the amount of POFA also led to higher VIM values, indicating more air voids within the asphalt mixture, which could affect its long-term durability. The combined use of POFA and Fly Ash as fillers demonstrates that both can be utilized in AC-BC asphalt mixtures without compromising quality or failing to meet the 2018 Bina Marga specifications. The study concludes that POFA is a viable alternative filler for asphalt mixtures, particularly for improving the stability and performance of surface layers in road construction.
Analisa Ekonomi dan Rencana Pra-Rancang Recycle LPG Liquid yang Tersisa di V-6410 Maulana, Rahmat Reza; Munawar, Munawar; Elwina, Elwina
Jurnal Teknologi Vol 25, No 1 (2025): April 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i1.6243

Abstract

This study focuses on the pre-design of a recycling system for the remaining Liquefied Petroleum Gas (LPG) in the inboard arm of V-6410 to optimize resource utilization and reduce environmental impact. Currently, remaining LPG during the loading process is disposed of via flaring or blowdown to the sea, leading to resource loss and potential environmental harm. The research identified a remaining LPG volume of 0.896 MT. To recycle this LPG to D-6456, a 177.9 m pipeline with a 2-inch NPS diameter is required, achieving a flow velocity of 3.266 m/s and a flow rate of 100.8 m³/h. The system exhibits turbulent flow with a Reynolds number of 9 × 10⁵ and a total friction loss of 85.21 m. Mass and energy balance calculations confirmed equilibrium, with incoming and outgoing mass flow rates of 123,924.047 kg/h and energy rates of 766,778.213 kJ/h. Economic feasibility analysis shows the project requires an investment of IDR 360,769,947.4, generating annual revenue of IDR 1,797,440,881. The Payback Period (PBP) is 2.1 months, with a positive Net Present Value (NPV) of IDR 362,761,862 and an Internal Rate of Return (IRR) of 17%, proving economic viability. The proposed design offers a sustainable solution by reducing waste, minimizing environmental impact, and increasing profitability. This study provides a practical framework for implementing resource optimization strategies in industrial LPG handling systems.
Analisis Ukuran Partikel Serbuk Arang terhadap Pengurangan Kadar Abu pada Briket Tempurung Kelapa Napitupulu, Robert; Pratama, Randa Julio; Dharta, Yuli
Jurnal Teknologi Vol 25, No 1 (2025): April 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i1.6256

Abstract

As an environmentally friendly alternative fuel, coconut shell briquettes have the potential to replace fossil fuels. However, the main challenge in its use is the high ash content that reduces combustion efficiency and produces residues that are difficult to clean. This study focuses on analyzing the effect of charcoal particle size on reducing ash content in coconut shell briquettes. The method used was a full factorial experimental design with two process variables: the ratio of charcoal powder and tapioca starch (90%:10%, 85%:15%, 80%:20%), and charcoal particle size (40, 60, and 80 Mesh). To improve accuracy, each treatment combination was repeated three times. The stages of making briquettes include material preparation, mixing, molding, and drying. Ash content testing was conducted in accordance with SNI 01-6235-2000 standard. The results showed that charcoal particle size has a significant effect on ash content, where larger particles produce lower ash content. The lowest ash content, 1.49%, was found in briquettes with 40 Mesh particle size. This study makes an important contribution to the development of more efficient and environmentally friendly coconut shell briquettes.
Kajian Biaya Operasional Kendaraan dan Nilai Waktu Perjalanan Sepeda Motor pada Jalan Medan-Banda Aceh Kota Lhokseumawe Fitri, Gustina; Ismail, Ismail; Abdullah, Faisal
Jurnal Teknologi Vol 25, No 1 (2025): April 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i1.6670

Abstract

Medan-Banda Aceh Road is a road that connects Lhokseumawe city with other cities, Aceh province with North Sumatra, Lhokeumawe city with various strategic centers such as roads in and out of housing, offices, hospitals, gas stations, UNIKI campus, STIES campus, Akper campus, campus Akbid, STAIN campus, PNL campus and so on. So at certain times there are often traffic jams due to side obstacles which result in large Vehicle Operation Costs (BOK) and hampered travel time. This research aims to analyze vehicle operating costs and the value of travel time for private vehicles on these roads, so that a comparison of the benefits of vehicle operating costs and travel time value can be found. The method used to analyze vehicle operating costs is the Pacific Consultant International (PCI) method and Travel Time Value uses the Running Speed Approach method. From the calculation results, the total average vehicle operating costs for Medan-Banda Aceh Road during peak hours, namely for private cars at post 1, is IDR. 5,946 / kend and post 2, namely Rp. 5,975 / kend. The value of post 1 travel time is IDR. 73,321/hour, and in post 2 it is IDR. 76,851/hour, but side obstacles must be regulated so that traffic jams do not occur which will affect the amount of vehicle operating costs and the value of travel time.

Page 11 of 14 | Total Record : 136

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