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All Journal Ruang Journal of Community Based Environmental Engineering and Management Specta Journal of Technology Journal of Urban Planning Studies ADMA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Journal of Social Research Compact: Spatial Development Journal Jurnal Teknologi Lingkungan
Yorika, Rahmi
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Journal : Specta Journal of Technology

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Analisis Variasi Ukuran Partikel Biomassa Cangkang Kelapa Sawit dan Tandan Kosong Kelapa Sawit (TKKS) terhadap Karakteristik Refuse Derived-Fuel (RDF) Riza Hudayarizka; Wulandari, Agustina; Ariani, Ismi Khairunnissa; Yorika, Rahmi
SPECTA Journal of Technology Vol. 8 No. 3 (2024): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v8i3.1212

Abstract

Energy consumption in Indonesia is still mostly dependent on fossil fuels like coal, leading to their gradual depletion. Therefore, there is a need for environmentally friendly alternative energy sources from biomass waste, such as Refuse Derived-Fuel (RDF). Biomass waste with a high calorific value, like palm kernel shells and empty palm kernel bunches (EFB), is promising as RDF raw material. The size of the particles affects the characteristics of RDF because it impacts the structure and composition of RDF pellets. The tested composition ratios of palm kernel shells, EFB, and adhesives were (90:0:10), (80:10:10), (70:20:10), (60:30:10), and (50:40:10), with particle sizes of 60, 80, and 100 mesh. The RDF characteristics evaluated included moisture content, ash content, volatile matter, fixed carbon, and calorific value. The best RDF composition was found to be 70% palm kernel shells, 20% empty palm kernel bunches, and 10% adhesive at a particle size of 60 mesh, resulting in a moisture content of 5.2%, ash content of 4.64%, volatile matter of 78.89%, fixed carbon of 9.64%, and a calorific value of 4404.32 cal/g. XRD analysis indicates that RDF contains amorphous carbon, silica, and, with the addition of EFB, contributes to the potassium content. SEM analysis shows that larger particle sizes of the raw material form larger pores in RDF compared to smaller particle sizes.
Penyisiahan Kadar Fostaf Air Limbah Laundry Menggunakan Eichhornia crassipes Sebagai Agen Fitoremediasi Basransyah, Basransyah; Yorika, Rahmi; Beelyada Diwirya, Agnes
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1213

Abstract

Wastewater from laundry is produced by detergents containing main ingredients that are not easily decomposed naturally, such as Sodium Dodecyl Benzene Sulfonate and Sodium Tripolyphosphate. Water hyacinth (Eichhornia crassipes) functions as a phytoremediator that can absorb organic and inorganic substances. This study aims to assess the efficiency of reducing phosphate concentration in waste and to analyze the effect of water hyacinth mass and the addition of aeration on reducing phosphate concentration in laundry liquid waste. Wastewater samples were taken from Laundry X in Gunung Sari Ulu Village, Central Balikpapan, with a phosphate content of 0.63 mg/L/day. This study used variations in the mass of water hyacinth of 200 grams, 300 grams, and 500 grams with 15 liters of wastewater. The results of the phytoremediation study using water hyacinth plants with a mass of 200 grams, 300 grams, and 500 grams, as well as the addition of aeration, can reduce phosphate concentrations by 33.59%, 27.67%, and 30.67% on the 3rd day. The variation in the mass of water hyacinth and the addition of aeration showed a significance value > α (0.05); 0.665 for the mass variation test, and 0.058 for the addition of aeration test. Variations in the mass of water hyacinth plants and the addition of aeration did not significantly affect the removal of phosphate levels in laundry liquid waste
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.
Co-Authors Achmad, Fariz Agustina Wulandari Akmalunnisaa, Shoffi Anifah, Eka Masrifatus Ariani, Ismi Khairunnissa Aswad Janfari, Al Basransyah, Basransyah Beelyada Diwirya, Agnes Bunga', Samuel Elin Diyah Syafitri Hanifah , Althofina Hawwa Harfadli, Muhammad Ma'arij Ida Ayu Putu Sri Widnyani Intan Dwi Wahyu Setyo Rini Marpaung, Kevin Maulana, Melisa Triandini Mohtana Kharisma Kadri Mustofa, Umar Prasaningtyas, Asri Raharti, Henny Widya Rahendaputri, Chandra Suryani Riza Hudayarizka Setyawan, Trisna Adji Sholikah, Umi Sitaresmi, Devi Triwidya Sofyar, Nadia Larasati Wulandari, Marita Zulfikar, Ainun