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Muhammad Nizar
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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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Rancang Bangun Aplikasi Laundry Berbasis Website Pada Toko Dila Laundry di Pidie Jaya Jamal, Aldi Yusri; , Baihaqi
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

In this millennial era, the rapid advancement of information technology has significantly influenced various sectors, including service-based businesses such as laundry services. Speed and accuracy in accessing information are now essential, thus requiring adequate technological support. Dila Laundry is a business operating in the laundry service industry that currently still relies on manual processes. Based on recent observations, the business does not yet utilize an integrated information system, and all customer and transaction data are still recorded manually in physical books. This lack of a digital system results in limited access to real-time information for customers, and some experience difficulties in dropping off or picking up their laundry due to busy schedules. To overcome these challenges, a web-based application is proposed to enhance Dila Laundry’s operations. This system is expected to provide customers with up-to-date information about available services, offer a reliable pick-up and delivery feature, streamline financial reporting, and improve service quality overall. By implementing this application, the business can operate more efficiently, minimize errors, and provide a more professional and convenient experience for its customers.
Analysis of PM Dispersion and Source Identification in Jl. Soekarno-Hatta, Pekanbaru, using HYSPLIT Mustaqiman, Aulia Nur
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study investigates the spatiotemporal characteristics of PM pollution in Jl. Soekarno-Hatta, Pekanbaru, Indonesia, during January to November 2024, integrating air quality monitoring data, meteorological analysis, and HYSPLIT trajectory modeling. The highest PM concentration was recorded on 22–23 September 2024 at 55.74 µg/m³, corresponding to an AQI of 131, classified as “Unhealthy for Sensitive Groups.” Monthly averages ranged from 18 µg/m³ in January to 56 µg/m³ in September. A total of 37 days exceeded 50 µg/m³, and 112 days surpassed the U.S. EPA’s moderate threshold of 35 µg/m³. Meteorological data showed that low wind speeds (2.3–2.7 kph), persistent humidity (76–82%), and nighttime temperature inversions contributed to pollutant accumulation. Rainfall exhibited a strong inverse correlation with PM, with the driest month (June, 110 mm) aligning with high PM levels, and the wettest (November, 312 mm) aligning with lower concentrations (~21 µg/m³). HYSPLIT backward trajectory modeling revealed that air masses originated from the northwest, indicating contributions from transboundary sources such as peatland fires in West Sumatra. Forward trajectories showed that pollutants from Jl. Soekarno-Hatta, Pekanbaru, could reach Jambi and South Sumatra. The findings highlight the need for integrated air quality strategies, including emission reduction, fire prevention, and early warning systems, to mitigate PM exposure and protect vulnerable populations in tropical urban environments.
Proses Pemesinan Pada Produksi Mesin Pencacah Sabut Kelapa Sawit di PT. Raja Ampat Indotim Oga Rahadin; Kardiman; Ujiburrahman
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This internship report aims to examine the machining processes involved in the production of an oil palm fiber shredder machine at PT. Raja Ampat Indotim. The background of this study stems from the issue of oil palm fiber waste, which remains underutilized despite its economic potential. The internship focused on observing the step-by-step production process, including the use of milling, turning, bending, drilling, grinding, welding, and finishing operations. The study employed a qualitative approach through direct observation, interviews with machine operators, and documentation of production stages. The results indicate that the machine was successfully assembled over a span of 14 working days, with a shredding capacity of 300–500 kg/hour powered by an 80 HP diesel engine. This study provides insights into the integration of manufacturing techniques within the agricultural machinery industry and highlights the importance of efficient production in supporting sustainable management of agricultural waste.
Audit Energi Awal Pada Pompa Distribusi IPA Waribang II Perumda Air Minum Tirta Sewakadarma Kota Denpasar Arif, Maulana Nur; Eddy Setiadi Soedjono
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The energy cost at Perumda Air Minum Tirta Sewakadarma reached Rp452/m³, exceeding the national average of Rp380.13/m³. Despite this, no energy audit has been conducted in accordance with established standards. This study aims to conduct a preliminary energy audit and assess opportunities to enhance energy efficiency, particularly at the distribution pump of IPA Waribang II. The research involved primary data collection through field observations and secondary data. The audit revealed SEC of 0.23 kWh/m³, which is good. However, total pump efficiency was only 44.23%, below the recommended minimum of 60%. The distribution pump’s capacity exceeds the IPA, prompting manual adjustment of motor speed using VSD to 1,250 rpm, down from its maximum 1,480 rpm, to match IPA output of 150 L/s. The optimization could is by forming a subzone aligned with IPA capacity and automating the VSD based on demand fluctuations. Alternatively, the pump could be replaced with one appropriately sized for the IPA. The voltage imbalance is 0.33%, indicating stable power supply. The power factor is measured at 0.91 and could be improved to 0.99 using capacitor bank to avoid reactive power penalties.
Pendekatan Ekonomi Sirkular Dalam Industri Tembakau : Mendaur Ulang Limbah WWTP Menjadi Kompos Kaya Nutrisi Melalui Proses Anaerobik Tri Figur Fuad; Abdul Wahid
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The implementation of circular economy principles is crucial for industries to achieve sustainability, including the tobacco industry which generates significant organic waste in the form of sludge from its Wastewater Treatment Plant (WWTP). This study demonstrates a circular economy model by upcycling WWTP sludge into nutrient-rich compost using anaerobic digestion (AD) technology. The AD process was conducted on the sludge at a laboratory scale under mesophilic temperature conditions. The quality of the final compost product (digestate) was evaluated based on physicochemical parameters and compared with national compost quality standards. The results showed that the AD process successfully transformed the sludge into a stable and nutrient-rich material. The final product's C/N ratio reached 20:1, which is ideal for soil application. The contents of total N (1.6%), Phosphorus (P₂O₅ 1.1%), and Potassium (K₂O 0.9%) indicate its potential as an effective organic fertilizer. The quality of the compost produced was proven to meet the SNI 19-7030-2004 quality standard. This study confirms that upcycling sludge via AD is a feasible and effective approach to implementing a circular economy in the tobacco industry, turning a waste burden into a valuable product and supporting sustainable agriculture.
Application of the Analytic Hierarchy Process (AHP) in Determining Bridge Maintenance in Sekadau Regency Dwi Kartika Wati; Slamet Widodo; , Nurhayati
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

A bridge is an infrastructure structure that connects two points separated by natural and artificial obstacles. The importance of bridge maintenance lies in prioritizing the safety and smooth operation of the community, reducing construction costs, and extending the life of bridge infrastructure. The problem is that there has been an increase in mobility in several public spaces after the pandemic, so adequate facilities and infrastructure are needed. However, adding bridge infrastructure is currently not a top priority due to budget reductions. This study aims to use the Analytic Hierarchy Process (AHP) method in determining the priority of bridge maintenance in Sekadau Regency based on 4 (four) criteria and 10 (ten sub-criteria) for 3 (three) alternative steel frame bridges, where primary data is obtained based on questionnaires for 3 (three) groups of respondents. The analysis results show that the priority is given to the alternative Balai Sepuak Bridge, located in Balai Sepuak District, with a weight of 0.423. The second priority is the alternative Riam Engkayak Bridge located in Nanga Mahap District, with a weight of 0.416. The third priority is the alternative to the Ayak River Bridge, located in Belitang Hilir District, with a weight of 0.161.
The Potential of Bacillus subtilis and Pseudomonas aeruginosa in Reducing Hg²⁺ Levels in Small-Scale Gold Mining Liquid Waste in Indonesia Sekarsari Wibowo; Abiyyu Armijn Firman Firdaus; Abdillah Akmal Karami
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Mercury contamination resulting from artisanal and small-scale gold mining (ASGM) poses a significant threat to both environmental and human health. This study evaluates the effectiveness of two bacterial strains, Bacillus subtilis and Pseudomonas aeruginosa, in reducing mercury (Hg²⁺) concentrations in ASGM liquid waste. Methods: Experiments were conducted over seven days under controlled conditions, with two pH settings (neutral and alkaline), by monitoring total mercury reduction and bacterial growth (CFU/mL). Result and discussion: Results indicated that B. subtilis achieved the highest mercury removal efficiency—up to 90.07% at neutral pH and 89.51% at alkaline pH. P. aeruginosa also showed high efficacy, though slightly lower in comparison. Colony counts peaked on day two but declined by day seven, likely due to nutrient depletion and mercury toxicity, particularly at neutral pH. In contrast, control reactors without bacterial inoculation showed negligible changes in Hg concentration and no significant colony development. Conclusion: Despite the decline in bacterial counts over time, both strains remained functionally active, demonstrating strong adaptability and potential as effective bioremediation agents for mercury-contaminated wastewater. These findings support the integration of bacterial bioremediation as a viable component of sustainable mercury management in ASGM sectors.
Optimasi Dynamic Economic Dispatch pada Sistem Tenaga Hibrida Berbasis Photovoltaic Menggunakan Algoritma Turbulent Flow of Water-Based Optimization Moh. Erdianto Triputradi; Aryani , Ni Ketut; Wibowo, Rony Seto; Oktaviani , Berliandra; Najmy, Achsan
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The Increasing of living population, which impacts the increasing need for loads, is a challenge for plants in providing the need for electrical loads. The depletion of supplies and the high price of fossils constrain the cost of generating thermal plants. Therefore, a combination of alternative Photovoltaic (PV) energy power generation is needed to reduce the cost of generating thermal plants. Dynamic Economic Dispatch (DED) is one of the optimization techniques in power plants to determine the combination of output power in each generator in each period. This paper proposes an optimization technique to solve the DED problem in a hybrid PV base power system using Turbulent Flow Water-Based Optimization (TFWO) Method. This paper will compare the results and analysis of total generation costs before and after using PV plants. The total generation cost shows that the generation cost using PV can reduce the generation cost by $302,799.67.
Analisis Pengaruh Penambahan Aerasi dan Variasi Waktu Fitoremediasi Menggunakan Tumbuhan Myriophyllum aquaticum pada Effluent IPAL Komunal Desa Sungai Langka Ruben Thomson Napitupulu; Irhamni; Suci Wulandari
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Sungai Langka Village has a communal Wastewater Treatment Plant (WWTP) building, but the treated effluent still does not accordance the quality standards set by the Regulation of the Minister of Environment and Forestry Number 68 of 2016 concerning Domestic Wastewater Quality Standards. Phytoremediation was chosen as an environmentally friendly and easily applicable method. The selection of Myriophyllum aquaticum was due to its phytodegradation ability in breaking down organic and inorganic substances, as well as its abundance of bacteria that can absorb nutrients in the wastewater. This study used four reactors: Reactor A1 (control), Reactor A2 (phytoremediation), Reactor A3 (aeration), and Reactor A4 (phytoremediation and aeration). The results of this study showed that over time, the efficiency in reducing the ammonia parameter increased, with the following efficiencies recorded on day 15: Reactor A1 at 98.95%, Reactor A2 at 98.59%, Reactor A3 at 98.90%, and Reactor A4 at 98.15%. The results of statistical testing using multiple linear regression showed that the efficiency of ammonia parameter reduction was significantly affected by time variation, whereas the addition of aeration did not have a significant effect.
Pollutant Load Analysis of the Barito River Based on Seasonal Scenarios Azizah Shalihah A; Asep Sofyan; Suharyanto
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The Barito River is one of the major rivers in Kalimantan Island that plays a strategic role in supporting the social, economic, and environmental aspects of the surrounding communities. However, based on water quality monitoring conducted by the Environmental Agency of Central Kalimantan Province during the years 2021 to 2022 at seven points along the Barito River, it was found that the Water Quality Index indicated a “lightly polluted” status. Residential activities near the river contribute to the pollutant load through direct flow of domestic wastewater into the river. Similarly, the presence of coal stockpiles around the river is also believed to increase the pollution burden. This study aims to predict the water quality conditions resulting from land use activities—particularly residential areas and coal stockpiles—along the Barito River using the Water Quality Analysis Simulation Program (WASP) model. River water quality data was collected at four sampling points. Although the pollutant load carrying capacity from in each segment of the Barito River has not yet been exceeded by the actual pollutant load, the results of the modeling indicate that the concentrations of TSS, BOD, and COD in river water during both the dry and wet seasons have exceeded the water quality standards, with TSS values over 50 mg/L, BOD values above 3 mg/L, and COD concentrations greater than 25 mg/L. Therefore, a strategic management plan for pollution load control is urgently needed to maintain the water quality of the Barito River in accordance with Class II river classification.

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