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Muhammad Nizar
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muhammad.nizar@serambimekkah.ac.id
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serambiengineering@serambimekkah.ac.id
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Fakultas Teknik, Universitas Serambi Mekkah Jalan Unmuha, Batoh, Telp. (0651) 26160 dan (0651) 22471 Banda Aceh, Indonesia
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INDONESIA
Serambi Engineering
Published by Universitas Serambi Mekkah Aceh
ISSN : 25283561     EISSN : 25411934     DOI : http://doi.org/10.32672/jse
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering
The Serambi Engineering journal is published as a medium to distribute information on research results in engineering and science, both carried out by lecturers from the Serambi Mekkah University and other parties. Published research can be in the form of field research or laboratory research as well as a literature review. This journal is published four times yearly, namely January, April, July, and October. Editors accept manuscripts from lecturers, researchers, students, and practitioners that have never been published by any other media. Manuscripts submitted will be evaluated and edited for uniformity of format, terms, and other procedures. The topics that can be published but are not limited to are: Water & Waste Water Quality Solid Waste Management Air Pollution Control Environmental Health Environmental Modeling Environmental Management Water Resources Management Occupational Health & Safety Ecology Renewable Energy Circular Economics Sustainable Development Climate Change Mitigation and Adaptation Climate Change and Water Resources Adaptation Urban Planning Informatics Computer and Technology Industrial Engineering Other .
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Teknik Lingkungan
Articles 964 Documents
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Integrasi Lean DMAIC dan Circular Economy untuk Reduksi Waste pada Manufaktur Paving Block Retnowati, Dini; Fudhla, Ahmad Fatih; Puspita, Asri Dwi; Annurrada, Sofia
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Waste is a significant challenge in the manufacturing industry, including small and medium enterprises (SMEs) engaged in paving block production. This study applies the Lean DMAIC (Define–Measure–Analyse–Improve–Control) methodology to identify, analyze, and reduce waste in the production process. A case study was conducted at a paving block factory in East Java, which has an annual production capacity of 119,400 m². Data were collected from production records, observations, and interviews conducted between September 2024 and August 2025. Analysis using a weighted Pareto diagram and Flow Process Mapping revealed that defect categories, although accounting for only 1.99% of total production, resulted in a significant accumulation of dead stock in the storage area. Through a Decision Matrix and a radar chart, a recycling strategy was selected as the improvement solution. This strategy was subsequently formalized into a Standard Operating Procedure (SOP) for managing rejected products, ensuring consistent implementation and adherence. Evaluation of the implementation over one month showed a 23.8% reduction in dead stock volume. These findings provide empirical evidence of the effectiveness of integrating Lean DMAIC with circular economy principles in the paving block industry, offering a practical framework that can be replicated in similar manufacturing sectors.
Kajian Daya Dukung Air Berdasarkan Supply dan Demand di Kota Samarinda Wisiking Gusti, Ai Sukma; Ndan Imang; Yunianto Setiawan
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The increasing population growth is accompanied by a rapid pace of development, especially in urban areas that serve as centers of the economy, government, trade, and industry. The rapid population growth and economic activities in Samarinda City have led to a higher demand for water, a vital resource for humans and the environment. Samarinda City is one of the regions experiencing growth both in terms of population and economic activity. This study utilizes equations from Government Regulation No. 17 of 2009 concerning water resource management to determine water availability and demand. The research method used is a quantitative study with the collection of primary and secondary data. The results indicate that from the present until 2035, Samarinda City will still experience a water surplus, where water availability exceeds demand. However, several challenges remain, particularly related to distribution, accessibility, and the quality of clean water in some areas, due to uneven development of water distribution infrastructure.
Analisis Ergonomi Packaging Kayu Menggunakan Metode Failure Mode and Effect Analysis untuk Meminimalisir Kelelahan dan Meningkatkan Produktivitas Wijaya, Ade Candra; Firman Ardiansyah Ekoanindiyo
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

During the wood packaging process, workers at PT. Kakimoto House Japan are exposed to ergonomic risks due to improper working postures and repetitive activities. These conditions lead to physical complaints and decreased productivity. This study aims to identify potential work failures using the Failure Mode and Effect Analysis (FMEA) method. Data were collected through observation, interviews, and the Nordic Body Map questionnaire involving three operators. Results show that operator 1 scored a high-risk level of 70, while operators 2 and 3 were categorized as moderate. The Risk Priority Number (RPN) analysis revealed that foot fatigue had the highest RPN of 336, followed by lower back pain and minor wrist injury, each with an RPN of 280. The highest productivity rate was recorded at 0.9985, and the lowest at 0.9964. Based on these findings, ergonomic improvements such as adjusting tool height, rearranging workflow, and providing active rest breaks were recommended. This study confirms that the FMEA approach is effective in designing ergonomic solutions to enhance worker comfort and productivity.
Komparasi Kinerja Membran Ultrafiltrasi Polyvinylidene Fluoride   dan Polivinyl Chloride  Pada Air Sungai Jagir dalam Menurunkan TDS Mufidah, Shafa'ul; Restu Hikmah Ayu Murti
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study aimed to evaluate the performance of PVDF and PVC ultrafiltration membranes coated with Al2O3 in removing total dissolved solids (TDS) from Sungai Jagir river water after a pre-treatment adsorption using Granular Activated Carbon (GAC). The adsorption process was conducted for 10 minutes before the water was filtered through the membranes under various operating pressures (1, 1.5, and 2 bar) and operation times (0.1–0.5 h). The results showed that both membranes exhibited an increase in TDS rejection efficiency with longer operation time, while pressure had a limited effect. The PVDF membrane demonstrated consistently higher TDS rejection compared to PVC, suggesting that membrane surface properties influence solute removal efficiency. Statistical analysis using three-way ANOVA revealed that operation time had a significant effect on TDS rejection, whereas pressure did not show a notable impact. These findings indicate that contact duration between water and membrane plays a crucial role in reducing TDS in river water through ultrafiltration.
Analisis Life Cycle Assessment Produksi Biokoagulan Cangkang Maggot Marshanda Afifa Shalsabila; Euis Nurul Hidayah
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Black soldier fly shell as biocoagulant is considered effective in removing pollutants, making it a potential alternative coagulant in the coagulation-flocculation process. However, studies on the environmental impact of natural coagulant production need to be conducted as an assessment of the sustainability of natural coagulants. This study aims to analyze the environmental impacts caused by the production of black soldier fly shell biocoagulant using Life Cycle Assessment (LCA) with the ReCiPe 2016 method through Midpoint and Endpoint approaches using the SimaPro 9.6.0.1 software. The Life Cycle Assessment (LCA) was conducted with a gate-to-gate system boundary and a functional unit of 0.1 kg of raw biocoagulant material. Based on the results, the Midpoint approach showed the largest impact category as human carcinogenic toxicity with a total score of 1.07. Additionally, the Endpoint approach identified the largest impact category as human health with a total score of 20.7 Pt. The biggest contributor to the environmental impact in the production of black soldier fly shell biocoagulant is the chitosan dissolution stage, amounting to 5.11 Pt from the total human health impact. This is caused by electricity use, which affects human health.
Evaluasi Tingkat Kebisingan dan Rekomendasi Teknologi Pengendalian Bising di PT X Serlina, Yega; Evitayani; Yaura Jihan Shabirah; Miftahul Salami
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Noise problems have the potential to occur in PT X which focuses on the provision, processing, and distribution of steel and ready-mix concrete materials. This study was conducted to identify the types and sources of noise, evaluate noise levels, and evaluate the noise control system carried out at PT X. The measurement method used refers to SNI 7231: 2009 concerning the Method of Measuring Noise Intensity in the Workplace and SNI 8427: 2017 concerning Measurement of Environmental Noise Levels. The results of measurements carried out at 4 measurement points showed noise levels in the production area of 86.43 dB (A), and 84.94 dB (A), in the tower area of 79.77 dB (A) and in the concrete area of 95.27 dB (A). Evaluation of the Regulation of the Minister of Manpower of the Republic of Indonesia No. 5 of 2018 showed that noise at points 1 and 4 exceeded the threshold value. PT X carries out technical noise control in the form of engineering control and environmental engineering; administrative control in the form of division of working hours, work rotation, health checks and installation of safety signs; and the use of PPE in the form of earplugs. However, there are still noise control efforts that need to be optimized in their implementation at PT X, namely tightening the rules for the use of PPE and increasing noise absorption areas such as by adding tree planting areas that have the ability to reduce noise.
Optimasi Pengelolaan Air Berkelanjutan di Perguruan Tinggi – Studi Kasus Institut Teknologi Bandung (Kampus Ganesha) Dewi, Yulianty Kusuma
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Sustainable water management is crucial to tackle global challenges related to the depletion of Natural Resources and climate change. Universities becomes a driving factor in the development of knowledge. Assessment and evaluation of sustainable water management at the university is necessary to formulate recommendations for optimizing sustainable water management. The purpose of this study was to assess the score of implementation of sustainable water at the Institut Teknologi Bandung (ITB) using the UI (University of Indonesia) GreenMetric questionnaire, identify driving and inhibiting factors in implementing the concept of sustainable water management, and provide recommendations for the implementation of sustainable water management to run optimally. Data was collected by interviews, observations, field measurements, and questionnaires, with analysis conducted using the UI GreenMetric assessment methods and the Analytical Hierarchy Process (AHP). The findings revealed that ITB scored 550 out of 1,000 in sustainable water management practices. The role and authority of stakeholders influence the driving factor, for the inhibiting factors are limited funds, land, and conventional technology. Recommendations for implementing sustainable water within the university scope include financial analysis NPV and BCR, stakeholder training, feasibility studies, policy advocacy, water safety plan implementation, and rainwater harvesting technology application.
Determination of Critical Indoor Air Quality Parameters in Environmental Chemistry Laboratory of President University Gabryella Lovia Sihombing; Yosef Barita Sar Manik
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The Environmental Engineering Laboratory at President University is obliged to systematically identify and manage Environmental Health and Safety (EHS) aspects to comply with LAM Engineering Regulation No. 1 of 2025, which mandates Higher Education Institutions in Engineering to ensure the provision of appropriate laboratory infrastructure and continuous monitoring of EHS conditions within their facilities. Through a systematic identification process that aligns activities and working conditions with relevant regulations, 9 critical parameters have been established, including temperature, humidity, CO2, PM2.5, PM10, lighting, noise, airflow, and Total Suspended Particles (TSP). These findings were obtained based on the identification of potential pollution risks based on laboratory experiments based on study program modules, measurements of dimensions and equipment as well as indoor air circulation conditions and literature review on indoor air quality study and regulation. The results of the critical parameter determination provide a comprehensive picture of critical indoor air quality parameters in laboratories, thus forming the basis for the development of an appropriate EHS management system at President University laboratories. Based on these research results, it is recommended to regularly monitoring indoor air quality with monitoring device, move the furnace as source of particulates, and maintaining humidity by installing a dehumidifier to ensure a healthy and standard-compliant learning environment.
Pemanfaatan Limbah Kotoran Sapi dan Molase Kulit Pisang Sebagai Efektifitas Produksi Biogas di Desa Daeo Kabupaten Pulau Morotai Aja, Muhammad Fahmi; Saleh, Hasrul; Siti Hanian Bilo
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The community's dependence on kerosene remains a major issue, especially in disadvantaged, frontier, and outermost (3T) areas such as Morotai Island Regency. This study focuses on the utilisation of fresh cow dung waste combined with banana peel molasses as raw materials for biogas production. The research methods used were quantitative descriptive and experimental with trials on three digester designs. Based on the results of the study, the three digester designs showed significant differences, where RD1 was less than optimal because the low pH (6) caused unstable CH₄ production, 0 psi pressure, (CO₂, CO = 0), RD2 was the best design with neutral pH (7), stable mesophilic temperature (25–31 °C), high pressure (34 psi), and consistent CH₄ production increasing to 10,100 ppm, while RD3 was still able to produce fairly high CH₄ (8,731 ppm) despite relatively acidic pH. Regression analysis shows that in RD1, pH greatly affects CH₄ (R² = 0.899), while in RD2 and RD3, temperature is the dominant factor (R² > 0.997) in increasing methane production. In general, neutral pH and mesophilic temperature conditions proved to be most conducive to methanogenic bacterial activity, with RD2 as the most optimal digester design producing high-quality biogas with a neutral pH of 7, temperature of 31°C and pressure of 34 psi, and CH₄ consistently increasing to 10,100 ppm.
Analysis of Cutting System Failure in the CNC Vertical Machining Center of Hyundai Wia F500D Machine with the Root Cause Method at PT ABC Wijaya, Raihan Rama; Nugraha, Asep Erik; Sumitra, Naufal Rabbani
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

PT ABC as an automotive component manufacturing company faces the problem of high Downtime in CNC machines, especially the Hyundai Wia F500D Vertical Machining Center, which has an impact on decreased productivity and increased production costs. This study aims to identify the root cause of the failure of the cutting system in the machine and provide recommendations for appropriate repairs. The method used is Root Cause Analysis (RCA) with the Fishbone Diagram approach and 5 Why's analysis based on historical company data, field observations, interviews with related parties, and technical documentation. The results of the study show that the dominant root cause of cutting system failure is damage to the drawbar disspring which reduces the grip strength of the tool so that it triggers the condition of the tool oblique, spindle overload, and active system alarm. Other causative factors include production methods with aggressive cutting parameters, operator errors in tool installation and maintenance, machine age that has been more than 12 years with almost non-stop operation, and a less ergonomic working environment. These conditions have an impact on increasing the frequency of repairs, maintenance costs, decreased production output, and high potential product defects. The conclusion of this study is the need for corrective actions in the form of replacing drawbar dissprings and repairing spindle components, as well as preventive measures through scheduled maintenance, optimization of production methods, improvement of operator competence, and improvement of the layout of the work area.

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