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Syamsul Mujahidin
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Ruangan LPPM Gedung A lantai 2, Kampus ITK, Jl Soekarno Hatta KM 15, Karang Joang, Balikpapan, Balikpapan Utara, KALTIM
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Specta Journal of Technology
Published by Institut Teknologi Kalimantan
ISSN : 25492713     EISSN : 26229099     DOI : https://doi.org/10.0610/specta.v2i3
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Environmental Science
SPECTA journal is published by Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Teknologi Kalimantan, Balikpapann Indonesia. SPECTA is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in the field of Physics, Mathematics, Mechanical Engineering, Electrical Engineering, Chemical Engineering, Materials and Metallurgy, Civil Engineering, Industrial Engineering, Naval Engineering, Urban Planning, Informatics, Information System, Environmental Engineering, and Ocean Engineering. SPECTA accepts submission from all over the world, especially from Indonesia.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 325 Documents
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Analisis Emisi Gas Rumah Kaca Pada Pengelolaan Sampah di Institut Teknologi Kalimantan Menggunakan Metodologi Intergovernmental Panel on Climate Change: Analisis Emisi Gas Rumah Kaca Pada Pengelolaan Sampah di Institut Teknologi Kalimantan Bunga', Samuel; Rahendaputri, Chandra Suryani; Yorika, Rahmi; Rini, Intan Dwi Wahyu Setyo; Maulana, Melisa Triandini
SPECTA Journal of Technology Vol. 9 No. 3 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i3.8481427

Abstract

Institut Teknologi Kalimantan uses a solid waste disposal system for waste management. Waste is being delivered straight to the dump (TPA) without any kind of processing or recycling. The goal of this research is to analyze greenhouse gas emissions generated from the current waste management practices at Institut Teknologi Kalimantan, as well as to evaluate emissions under Three alternative scenarios. The research method complies with IPCC 2019. Scenario 1 integrated landfilling with organic waste composting and a high recycling rate (RF: 80%). Scenario 2 involved waste incineration, organic waste composting, and a moderate recycling rate (RF: 50%). Finally, Scenario 3 focused on waste incineration combined with organic waste composting. The research findings indicate that paper waste is the largest contributor to greenhouse gas emissions in Scenario 0, accounting for 52% of the total emissions produced. Among the three scenarios analyzed, Scenario 3 generated the highest overall greenhouse gas emissions. In this scenario, waste incineration emerged as the predominant source, contributing 93% of the total emissions in Scenario 3. The types of waste contributing to greenhouse gas emissions in solid waste disposal under Scenario 0 are organic waste (food scraps), paper waste, and wood waste. Among these, paper waste produces the highest greenhouse gas emissions due to its high Degradable Organic Carbon (DOC) content. Based on the three scenarios, and assuming without considering economic aspects or control measures, waste incineration was found to produce the highest emissions compared to landfill disposal and composting.
Optimasi Rute Distribusi pada Heterogeneous Capacitated Vehicle Routing Problem (HCVRP) Menggunakan Algoritma Evolutionary (Studi Kasus: CV. XYZ) Willis, Tito Bisma May; Pasaribu, Melly Rosinta; Sandra, Al Dian Devina; Miftah, Tarizza Alya Nurul
SPECTA Journal of Technology Vol. 9 No. 3 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i3.8481430

Abstract

CV. XYZ is a company engaged in the field of goods delivery services that must distribute to various customer points every day. With the number of vehicles and delivery routes that continue to grow, the company faces challenges in managing efficient routes. If delivery is carried out without optimal route planning, there can be wasted mileage, increased fuel costs, and delays in delivery that can reduce customer satisfaction. This study tries to provide a solution with a combination approach between the Capacitated Vehicle Routing Problem (CVRP) and Heterogeneous Vehicle Routing Problem (HVRP) methods using the Evolutionary Algorithm feature in Microsoft Excel. The main problem to be answered in this study is how to determine the most optimal route and how much distance savings are obtained from the optimization results. The steps in the study start from initial observation, collecting customer and vehicle data, creating a route model, processing data with Excel, to analyzing the results. From the optimization results, the total initial mileage before optimization was 318.7 km, which was then successfully reduced to 300.44 km after processing with Solver, resulting in a difference savings of 18.26 km. These findings indicate that a mathematical method approach in delivery route planning can have a significant impact on the company's distribution efficiency and operational costs.
Inovasi Pengolahan Limbah Baglog Jamur Tiram Menjadi Kompos Dengan Mol Nasi Basi Sebagai Bioaktivator Febrianti, Nia; Basransyah; Safitri, Nuri Dwi
SPECTA Journal of Technology Vol. 9 No. 3 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i3.8481444

Abstract

Oyster Mushroom Cultivation at KM 15, Balikpapan City produces up to 4,000 kg of baglog waste within a 3-month period. The baglog waste, which serves as the growing medium for oyster mushrooms, is merely stacked and discarded into the surrounding forest without proper treatment. Accumulation of baglog waste can cause environmental pollution as it becomes a breeding ground for wild fungi. Composting offers a potential solution for managing baglog waste. The composting process requires the addition of an activator to accelerate decomposition, such as fermented rice-based Local Microorganisms (MOL), which contain Lactobacillus sp. and Saccharomyces sp. Rice-based MOL is rich in carbohydrates, which serve as nutrients for microorganisms. This study aims to analyze the quality of compost produced from oyster mushroom baglog waste using rice-based MOL as a bioactivator, as well as to determine the effect and optimal volume of MOL on compost quality. The composting process was carried out using the aerobic Takakura method at a laboratory scale over a 30-day period. The variations of rice-based MOL used were 0 mL, 100 mL, and 250 mL. The quality of the resulting compost was compared against the Indonesian National Standard (SNI) 19-7030-2004. The results of the study showed that the control treatment, as well as the addition of 100 mL and 250 mL of MOL, met the compost quality standards for temperature, pH, odor, color, texture, moisture content, nitrogen, phosphorus, organic carbon, and C/N ratio. However, the potassium parameter did not meet the standard. Based on the graph, the addition of rice-based MOL indicates a positive effect on compost quality improvement. The optimum MOL volume for all parameters was 250 mL, although the potassium parameter still did not meet the SNI 19-7030-2004.
Aplikasi Campuran Ekstrak Kulit Nanas dan Biji Pepaya sebagai Biokoagulan untuk Penurunan Fe, Mn, dan Kekeruhan pada Air Asam Tambang dengan Metode Jar Test Ismi Khairunnissa Ariani; Rina Noor Hayati; Riza Hudayarizka; Cut Keumala Banaget; Krisma Nabilla
SPECTA Journal of Technology Vol. 9 No. 3 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i3.8481486

Abstract

Acid mine drainage can pollute the environment if not treated properly. Acid mine drainage can be treated using the coagulation-flocculation jar test method with pineapple peel and papaya seed biocoagulants to reduce the contaminants contained therein. The purpose of this study was to determine the characteristics of acid mine drainage, analyze the effect of biocoagulant dosage and analyze the variation of slow stirring time in reducing Fe, Mn, Turbidity parameters in Acid Mine Drainage. The research variables used were biocoagulant dosage of 0.5 - 2.5 gr/500 mL and slow mixing time of 10 - 30 minutes. Based on the characteristic test, acid mine drainage has content that exceeds the quality standard. The optimum biocoagulant dose was 0.5 gr/500 mL with Fe parameter removal efficiency of 66.56% with a concentration of 18.3 mg/L, Mn of 8.71% with a concentration of 12.78 mg/L, and Turbidity of 78.87% with a concentration of 5.33 NTU. The optimum stirring time is 10 minutes with Fe removal efficiency of 61.71%, Mn of 71.18%, and Turbidity of 63.12%.
Optimalisasi Pengolahan Air Limbah Laundry Menggunakan Media Zeolit dan Karbon Aktif dalam Filter Kombinasi Dua Tabung Kompak: Optimalisasi Pengolahan Air Limbah Laundry menggunakan Media Zeolit dan Karbon Aktif dalam Filter Kombinasi Dua Tabung Kompak Muhammad Bagas Grahandikha, Muhammad Bagas; Pradiko, Hary; Rochaeni, Anni
SPECTA Journal of Technology Vol. 9 No. 3 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i3.8481751

Abstract

Laundry wastewater is a source of environmental pollution that requires attention because it contains various compounds such as surfactants, suspended solids, and organic compounds that have the potential to damage the quality of groundwater and surface water. This study aims to optimize laundry wastewater treatment in a compact two-tube combination filter containing zeolite and activated carbon media. The filter treats artificial laundry wastewater made with three concentration variations. The variations tested were the flow rate and wastewater concentration. The results showed that the best removal efficiency occurred when the zeolite media was positioned in the inner tube with a downward flow direction, then flowed to the activated carbon media in the outer tube with a downward flow direction as well. The best removal efficiency was achieved at a medium flow rate (0.06 L/s and an initial concentration of COD of 143 mg/L, surfactant of 27.5 mg/L, and TSS of 117 mg/L) with a COD removal efficiency of 67%, surfactant of 64%, and TSS of 91%. Several parameters have met the quality standards stipulated in Yogyakarta Special Region Regulation No. 7 of 2016 concerning Wastewater Quality Standards. Therefore, a combination filter with two compact tubes using zeolite and activated carbon media could be a solution to improve environmental quality..

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