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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 The articles submitted to Jurnal Teknologi should be unpublished before and not under consideration for publication elsewhere.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 170 Documents
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Pemanfaatan Ekstrak Kayu Manis (Cinnamomum Burmanii) dan Kulit Lemon sebagai Bahan Alami Pembuatan Footspray Almadini, Nurul; Sari, Ratna; Amalia, Zuhra; Dewi, Ratni
Jurnal Teknologi Vol 25, No 3 (2025): Desember 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i3.7940

Abstract

Footspray is a practical alternative for maintaining foot hygiene and preventing odor caused by microbial activity in moist conditions. This study aimed to develop a natural footspray using cinnamon bark (Cinnamomum burmanii) and lemon peel (Citrus limon) extracts. Extraction was carried out by maceration with 96% ethanol, using particle sizes of 40/60, 60/80, and 80/100 mesh, and soaking times of 2-6 days. Extracts were evaluated for yield, solvent residue, flavonoid content, and antioxidant activity, then formulated into footspray with concentrations of 10-30%. The highest yield was obtained on the 5th day, with solvent residue 1%. Antioxidant activity was very strong, with IC50 values of 3.83 ppm for cinnamon and 7.14 ppm for lemon peel. Among the formulations, a 20% extract provided the best physical properties (pH, specific gravity, viscosity), strongest antibacterial effect, and highest panelist preference in organoleptic testing. These findings demonstrate that cinnamon bark and lemon peel extract are promising natural active ingredients for footspray, with 20% concentration offering optimal functional and sensory performance. This study supports the potential of natural bioactive compounds for safe, effective, and consumer-preferred foot care products. 
Pengaruh Resirkulasi Fraksi Cair Selama Karbonisasi Hidrotermal terhadap Karakteristik Arang Hidro Kulit Tanduk Kopi Yazid, T. M. Abrar Farhan; Sariadi, Sariadi; Sari, Ratna; Raudah, Raudah
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8513

Abstract

This research investigates the optimization of hydrochar production from coffee husks through a microwave-assisted Hydrothermal Carbonization (HTC) process, focusing on the influence of reaction time and liquid fraction recirculation. The main objective is to evaluate how these two variables affect the characteristics of the hydrochar and the chemical composition of the liquid fraction. Hydrochar characteristics were analyzed through iodine adsorption tests and acid group density measurements, while the liquid fraction from the optimal cycle was analyzed using High-Performance Liquid Chromatography (HPLC). The results indicated that the optimal operating time was 120 minutes, which produced the highest iodine adsorption capacity of 31,034.39 mg/g. Recirculating the liquid fraction for one cycle significantly increased the iodine adsorption capacity, reaching a peak of 34,309.18 mg/g. This improvement was driven by the acid-catalytic effect of the liquid fraction, which was shown to accumulate acetic acid (0.153% v/v). However, excessive recirculation led to a decrease in hydrochar quality due to pore blocking. In conclusion, the combination of a 120-minute carbonization process with a single recirculation cycle represents the optimal condition for producing high-quality hydrochar, effectively balancing pore development with the catalytic effects of liquid fraction recirculation
Prototype of Detector for Metal Content in Packaged Drinks Using Salinity Sensor Based on Arduino Uno Mauliddin, Mauliddin; Daud, Muhammad; Multazam, Teuku; Mardhiah, Ainal; Waldi, M. Fitra
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8891

Abstract

This research aims to design and build a prototype device for detecting iron (Fe) and manganese (Mn) metals in packaged drinks using a salinity sensor processed using the Kalman filter method. Packaged drinks are a popular choice due to their convenience and variety of flavors, but their metal content needs to be monitored to prevent health risks. This system was designed using an Arduino Uno microcontroller as the main controller, with a salinity sensor to detect Fe and Mn levels, and an LCD as the data display. Testing was conducted by comparing the device's detection results with laboratory data obtained from the Banda Aceh Industrial Standardization and Services Center. The results showed that the device was able to detect Fe with an accuracy of 98.48% and Mn with an accuracy of 100%. The average measurement error for Fe was 1.52%, while for Mn, the error was 0%. These results demonstrate that the designed device functions well and has high accuracy, thus potentially being used as an independent test tool for the suitability of packaged drinks.
Penurunan Kadar COD (Chemical Oxygen Demand) Air Sungai Cisadane Menggunakan Metode Fenton Adelina, Dina; Indrawati, Wiwik; Filosa, Aminudin; Hakim, Rusnia Junisa; S, Agustina Dyah; Ismet, Rhahmasari; Yullia, Nuke; Lita, Nurul
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8810

Abstract

The Cisadane River is one of the main water resources in Tangerang and surrounding areas. However, its water quality has declined due to domestic and industrial pollution, which increases the Chemical Oxygen Demand (COD) level. This study aimed to evaluate the effectiveness of the Fenton method in reducing COD levels in Cisadane River water and to determine the optimum reaction time for the treatment process. The experiment was conducted using 100 mL of river water sample treated with Fenton reagent consisting of FeSO₄ 0.3 M and H₂O₂ 0.8 M. The treatment was carried out at reaction times of 60, 120, 180, and 240 minutes, and COD levels were analyzed using a photometer. The results showed that the initial COD concentration of 495 mg/L decreased to 290 mg/L after 60 minutes, 195 mg/L after 120 minutes, 145 mg/L after 180 minutes, and 95 mg/L after 240 minutes. The highest COD removal efficiency was achieved at 240 minutes, with a reduction of 80.81%, and the final COD concentration met the domestic wastewater quality standard of 100 mg/L. In conclusion, the Fenton method was effective in reducing COD levels in Cisadane River water, with the optimum treatment time obtained at 240 minutes.
Pemanfaatan Ekstrak Daun Beluntas (Pluchea indica) Sebagai Bahan Aktif Deodoran Spray Alami Qariza, Maulin Hayatun; Sari, Ratna; Elfiana, Elfiana; Dewi, Ratni; Fathiya, Nir
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8667

Abstract

Body odor is a common problem experienced by people in tropical climates such as Indonesia. Continuous use of chemical-based deodorants risks causing irritation and other skin disorders, thus driving the need for natural alternatives that are safer and more environmentally friendly. This study aims to obtain the optimal powder size and soaking time in producing beluntas leaf extract as well as the optimal concentration as a spray deodorant. Extraction was carried out through the maceration method with variations in powder size of 60/80, 80/100, 100/120, 120/140 and 140/160 mesh and soaking times of 2, 3, 4, 5 and 6 days. Parameters analyzed included yield, residual solvent content, flavonoid content, and antioxidant activity (IC₅₀). The best extract was then formulated into a spray deodorant with concentrations of 10%, 15%, 20%, 25% and 30%, then tested for physical stability, organoleptic properties, and antibacterial activity against Staphylococcus epidermidis. The results showed that 100/120 mesh powder with a five-day soaking time produced the best extract with a yield of 11.75% and a residual solvent content of 0.73%. The extract contains active flavonoids with very strong antioxidant activity (IC₅₀ = 3.79 ppm). The deodorant formulation with a 25% concentration provided the most optimal physical and antibacterial performance, thus having the potential to be developed as an effective and safe natural deodorant product.
Rancang Bangun Aplikasi Pengaduan Layanan Publik Sebagai Media Pengaduan Masyarakat Desa Pagarawan Berbasis Android Alzibar, Rafi; Josi, Ahmat; Putri, Vivin Mahat
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8441

Abstract

Public services that are still carried out manually in Pagarawan Village require people to come directly to the village office to submit complaints, which is considered inefficient in today's digital era. To address this issue, this study aims to design and develop an Android-based public service complaint application as a medium for the community to convey their aspirations digitally. The method used is the Prototype method, which includes the stages of requirements gathering, design, prototype evaluation, coding, testing, and system evaluation. System testing was carried out using Black Box testing involving the Pagarawan Village Office and the community as users. The test results showed that all main features, such as registration, login, complaints, report status monitoring, and data management by the admin, functioned properly and as needed. In addition, user satisfaction testing through User Acceptance Testing (UAT) resulted in a score of 84.32%, which falls into the “Very Good” category, indicating that the system is well-received by users and provides a satisfying user experience. This application is expected to become an effective digital innovation in improving the efficiency of complaint handling, accelerating follow-up on reports, and strengthening the quality of public services at the village level through the use of information technology.
Pembuatan Pembersih Lantai Alami dengan Ekstraksi Daun Sirih (Piper Betle L.) dan Serai Wangi (Cymbopogon Bernardus L.) terhadap Aktivitas Bakteri Tussakinah, Jaida; Ridwan, Ridwan; Nahar, Nahar
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8970

Abstract

This study aims to evaluate the effect of maceration time and composition ratio of betel leaf (Piper betle L.) and lemongrass (Cymbopogon nardus) extracts on the characteristics and antibacterial activity of natural floor cleaners. The extraction method used was maceration with soaking time variations of 2–6 days and extract composition ratios of 1:0, 0:1, 1:1, 1:2, and 2:1. The parameters analyzed included pH, density, organoleptic properties, and antibacterial activity using the colony counter method. The results showed that the pH increased from 5.2 to 7.2 with longer maceration time, while the density remained relatively stable in the range of 0.90–0.93 g/mL. Antibacterial activity also increased with extraction time, with the highest effectiveness observed at 6 days of maceration, achieving a bacterial reduction of 66.41%. Organoleptic evaluation indicated that the product was generally acceptable to panelists, with neutral to favorable responses. The optimal formulation was obtained at 6 days of maceration with a 1:2 ratio of betel leaf to lemongrass extract, producing favorable physicochemical properties and the highest antibacterial activity. This study demonstrates the potential of natural ingredients as eco-friendly and safe alternatives for floor cleaning products.
Optimalisasi Ukuran Maksimum Agregat terhadap Workability dan Kuat Tekan Beton Mutu Tinggi dengan Tambahan Superplasticizer Farhandasi, Reza; Maulidin, Alpin; Khairunnisa, Hanyta; Rahmadhani, Yuni
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8819

Abstract

The demand for High-Strength Concrete (HSC) in modern infrastructure necessitates the optimization of its constituent materials. This study investigates the effect of varying Maximum Aggregate Size (MAS) on the compressive strength of HSC, which was designed with a low water-cement ratio (0.4) and a target characteristic strength (f’c) of 40 MPa at 28 days, utilizing a superplasticizer to maintain workability. Three variations of coarse aggregate size were tested: 19.10 mm, 25.56 mm, and 31.50 mm. Twenty cube specimens (15×15×15 cm) were prepared and tested. The results showed a clear inverse correlation between MAS and compressive strength. The 19.10 mm aggregate produced the highest average strength of 30.269 MPa, followed by 29.110 MPa (25.56 mm) and 27.322 MPa (31.50 mm). This optimal performance is attributed to the superior gradation (lowest Fineness Modulus) and the resulting enhancement of the Interfacial Transition Zone (ITZ) quality, as smaller aggregates promote a denser and stronger bond with the cement paste. Although the target strength of 40 MPa was not achieved, the 19.10 mm aggregate demonstrated the highest potential for strength development, showing a 10.79% increase compared to the 31.50 mm aggregate. The study concludes that MAS 19.10 mm is the most optimal size among the variations tested for maximizing compressive strength under the given mix design.
Ekstraksi Kulit Jeruk Manis (Citrus Sinensis) Sebagai Bahan Aditif Pembuatan Lilin Aromaterapi Berbahan Baku Minyak Kedelai (Soy Wax) Syahputra, M. Riski; Elwina, Elwina; Fachraniah, Fachraniah
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8671

Abstract

This study aims to utilize sweet orange peel (Citrus sinensis) as an additive in the production of aromatherapy candles based on soy wax. Essential oil extraction was carried out using the maceration method with 96% ethanol as the solvent. The independent variables in this study included variations in the volume of orange peel extract (2–6 mL) and the mass of soy wax (100–300 g), while the dependent variables comprised pH measurement, melting point analysis, component analysis using gas chromatography–mass spectrometry (GC–MS), and organoleptic evaluation (aroma, shape, and color). The results showed that the orange peel extract yielded essential oil with a fresh citrus aroma and a pH ranging from 5.5 to 5.8. The melting point of the candles increased with increasing extract volume and soy wax mass, reaching a maximum temperature of 54°C. The best burning resistance was obtained at the combination of 250 g soy wax and 6 mL extract, with a burning duration of 4.49 hours. Hedonic testing indicated the highest aroma preference at the combinations of 100 g soy wax with 6 mL extract and 300 g soy wax with 5 mL extract, with a hedonic score of 4.93. GC–MS analysis revealed that the major components of the essential oil were D-limonene, linalool, and other alcohol compounds, which contribute to relaxation effects and a characteristic citrus aroma. Overall, the findings demonstrate that sweet orange peel extract has strong potential as a natural additive in the production of environmentally friendly and economically valuable aromatherapy candles.
Rancang Bangun Sistem Informasi Kopmen Muamalah Bina Insani Susanti, Elis; Lesmana, Yosep Budi; Pratama, Rd Muhammad Sopian Putra
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8414

Abstract

Information systems hold a vital position in contemporary life as they provide easier access to necessary information and enhance organizational operations. The rapid advancement of technology has significantly impacted various fields, including cooperatives, which demand reliable systems for managing financial activities. This research focuses on designing and developing an information system for the Kopmen Muamalah Bina Insani Employee Cooperative, where financial transactions are still managed through spreadsheets without the support of a structured database. Such practice often results in inefficiencies and potential data errors. To resolve this issue, the study applies the waterfall method, which offers a systematic and sequential model for information system development. The system design is illustrated using Unified Modeling Language (UML) diagrams to present system requirements and processes in a clear manner. The outcome of this study is a cooperative information system supported by a database that enables savings and loan transactions to be handled more efficiently and effectively. This system is expected to support managers, supervisors, and members of the cooperative in conducting financial management tasks in a more organized and accurate way.

Page 16 of 17 | Total Record : 170

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