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All Journal ELKHA : Jurnal Teknik Elektro Jurnal Chemurgy Journal Of Chemical Process Engineering
Larasati, Tantra Diwa
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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KAJIAN ANALISIS POTENSI ENERGI BARU TERBARUKAN PADA KOTA SAMARINDA TAHUN 2023-2024 DALAM MENDUKUNG BAURAN ENERGI LISTRIK NASIONAL Larasati, Tantra Diwa; Alham, Nur Rani; Utomo, Restu Mukti
Jurnal Chemurgy Vol 8, No 1 (2024): Jurnal Chemurgy-Juni 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v8i1.15575

Abstract

The use of new and renewable energy is currently still relatively small, it’s 13.09% compared to fossil energy which is still the national primary energy. The government itself has set a target for renewable energy utilization to reach at least 31% by 2050, and the city of Samarinda is part of East Kalimantan province, which is the largest coal and oil and gas producer in Indonesia. To assist the government in achieving the EBT’s target, an analysis study was carried out on the EBT Potential in the city of Samarinda. This research was carried out by collecting data both by obtaining data in documents and taking direct measurements at certain locations. From this research, we obtained the results of identifying the type of EBT and the potential for electrical energy, namely Waste Energy, of 881.49 MW/Year. Then Solar Energy is 1,191 MWh. Wind energy is 9,933 Kwh and Water Energy for Microhydro Power Plant calculations is 292.33 Kw per year.. Keywords: potency, EBT, Energy
Pemanfaatan Ampas Tebu sebagai Adsorben Ion Mineral untuk Menghilangkan Warna Keruh pada Air Sungai sudarmo, Alfan Prakoso; Zahra, Laila; Larasati, Tantra Diwa
Jurnal Chemurgy Vol 7, No 1 (2023): Jurnal Chemurgy-Juni 2023
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v7i1.5901

Abstract

Adsorpsi adalah proses pengumpulan suatu substansi pada permukaan padatan adsorben. Proses adsorpsi ini melibatkan dua komponen utama yaitu adsorben yang merupakan padatan dimana di atasnya terjadi pengumpulan substansi yang disisihkan dan adsorbat yaitu substansi yang akan disisihkan dari cairan. kadar mineral dapat menimbulkan efek gangguan terhadap kesehatan manusia, tergantung pada bagian mana dari kadar mineral tersebut yang terikat dalam tubuh serta besarnya dosis paparan. Pada penelitian ini dilakukan adsorpsi dengan proses aktivasi dan tanpa aktivasi sehingga dapat dilihat bahwa adsorben dengan proses aktivasi lebih efektif daripada adsorben tanpa aktivasi. Mineral Ca dan mineral Mg banyak terserap saat menggunakan adsorben dengan aktivasi dengan massa absorben sebesar 0,5 gram dikarenakan aktivasi dapat menyebabkan perluasan permukaan adsorben untuk menyerap kadar mineral. Sedangkan pada adsorben tanpa aktivasi hanya warna yang memudar untuk kandungan mineral dapat meningkat.
The The Effect of Seawater Use and Solution Composition on the Quality of Blackening Results Purnama Sari, Dewi; Razzaq, Khazainnur; Ikhwan, Ris Muhammad Noval; Rahmayanti; Kamaludin; Pradana Putra, Eriek Aristya; Larasati, Tantra Diwa
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1566

Abstract

The study of the use of seawater and the composition of blackening solutions on the quality of blackening results is essential in increasing the efficiency of raw materials and finding an adequate formulation in the blackening process. Blackening is a black oxide coating process that aims to increase metal resistance to corrosion and wear. This study uses seawater as a solvent with blackening solution raw materials consisting of NaOH and oxidizers with varying compositions. The parameters for testing the quality of blackening results include color testing using the visual matching method, image color picker application, and corrosion resistance testing using the weight loss method. The study results showed that seawater can be used as a solvent in making blackening solutions by providing a somewhat contrasting black color and slower corrosion rate compared to solutions without seawater. NaOH with a percentage of 50%, 70%, and 80% in the corrosion test showed an increase in corrosion resistance of 10%, 30%, and 40%, respectively, after immersion for 30 minutes at a temperature of 150°C. The resulting blackening process not only provides aesthetic value through black coating but also increases protection against material surface degradation. This research is expected to provide an alternative formulation of a blackening solution that is more environmentally friendly and economically efficient, mainly by utilizing seawater as a solvent. In addition, these results are expected to be the basis for further development in blackening applications on various materials for industrial needs.
Reliability Analysis of Biomass Power Plant Using Loss of Load Probability Index at PT. Tanjung Buyu Perkasa Plantation Muslimin, Muslimin; Larasati, Tantra Diwa; Tandiminanga, Agung
ELKHA : Jurnal Teknik Elektro Vol. 15 No.2 October 2023
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v15i2.68481

Abstract

The main function of a power generation system is to provide reliable electrical energy. This study aims to determine the reliability of Biomass Power Plants at PT. Tanjung Bayu Perkasa Plantation (PT. TBPP) in the years 2020, 2021, and 2022 using the Loss of Load Probability (LOLP) index calculation method. LOLP is a reliability index that indicates the possibility that the power plant cannot meet the demand. The LOLP of biomass power plants at PT. TBPP in 2020 amounted to 1.2769 days per year. However, the LOLP in 2020 does not comply with the standards set by the Republic of Indonesia Minister of Energy and Mineral Resources Decree in 2018. In contrast, in 2021, it was 0.53403 days per year, and in 2022, it was 0.41748 days per year, both of which meet the standards of the Republic of Indonesia Minister of Energy and Mineral Resources Decree in 2018. The LOLP is affected by the Forced Outage Rate (FOR) and demands exceeding the capacity. Based on the LOLP of biomass power plants at PT. TBPP in 2020, 2021, and 2022, it can be concluded that the reliability of biomass power plants at PT. TBPP is at a higher level of reliability compared to the micro-hydro power plant in Pantai Baru Pandasimo with a LOLP of 51.3627 days per year and the steam power plant at Pertamina EP Asset IV Field Sukowati with LOLP of 4.259535 days per year. The recommendation for future research is to explore ways better to optimize boiler operations in steam power plants at PT. TBPP.
Co-Authors Alham, Nur Rani Dewi Purnama Sari Ikhwan, Ris Muhammad Noval Kamaludin Muslimin Muslimin Pradana Putra, Eriek Aristya Rahmayanti Razzaq, Khazainnur sudarmo, Alfan Prakoso Tandiminanga, Agung Utomo, Restu Mukti Zahra, Laila