Bungin, Ignata (2025) Implementasi Metode Life Cycle Assessment (LCA) Untuk Perhitungan Dampak Greenhouse Gases (GHG) Pengolahan Nikel Secara Hidrometalurgi Dan Pirometalurgi. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Karya ini menyajikan studi kasus yang berfokus pada menghitung dan membandingkan dampak emisi karbon atau Greenhouse Gases (GHG) yang dihasilkan oleh pabrik pengolahan nikel hidrometalurgi yang dikenal dengan metode High Pressure Acid Leaching (HPAL) dan pengolahan nikel secara pirometalurgi atau Rotary Kiln Electric Furnaces (RKEF) menggunakan metode Life Cycle Assessment (LCA) yang lazim digunakan untuk menganalisis dampak lingkungan dari suatu proses produksi khususnya terhadap parameter Global Warming Potential (GWP). Selama ini, industri pengolahan nikel secara pirometalurgi menghasilkan dampak lingkungan cukup besar akibat penggunaan bahan bakar fosil sebagai sumber energi dan bahan baku utama. Sejalan dengan berkembangnya kesadaran dunia industri akan pentingnya menjaga kelestarian lingkungan, di industri pengolahan nikel mulai dikembangkan teknologi pengolahan nikel secara hidrometalurgi yang dipercaya lebih ramah lingkungan karena mengganti penggunaan bahan bakar fosil dengan air dan bahan kimia. Perhitungan emisi karbon (GHG) proses pengolahan nikel secara hidrometalurgi menghasilkan dampak GWP sebesar 7.662 kg CO2eq/t Ni. Nilai ini jauh lebih kecil yaitu hanya 27,5% dari dampak GWP akibat emisi karbon (GHG) yang dihasilkan dari proses pengolahan nikel secara pirometalurgi yaitu sebesar 27,854 kg CO2eq/t Ni. Beberapa program penurunan gas rumah kaca yang dapat diimplementasikan pada proses pirometalurgi saat ini di PT Vale dapat memberikan kontribusi penurunan emisi GHG sebesar 36,2% jika semua program berhasil dilakukan.
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This work presents a case study that focuses on calculating and comparing the impact of carbon emissions or Greenhouse Gases (GHG) produced by hydrometallurgical nickel processing plants known as the High Pressure Acid Leaching (HPAL) method and pyrometallurgical nickel processing plant or Rotary Kiln Electric Furnaces ( RKEF) using the Life Cycle Assessment (LCA) method which is commonly used to analyse the environmental impact of a production process, especially on Global Warming Potential (GWP) parameter. So far, the pyrometallurgical nickel processing industry has produced significant environmental impact due to the use of fossil fuels as the main energy source and raw material. In line with the growing awareness of the industrial world regarding the importance of preserving the environment, hydrometallurgical nickel processing technology has developed considering to be more environmentally friendly because it replaces the use of fossil fuels with water and chemicals. Calculation of carbon emissions (GHG) from the hydrometallurgical nickel processing process produces a GWP impact of 7,662 kg CO2eq/t Ni. This value is much smaller which is only 27.5% compare with the impact of GWP due to carbon emissions (GHG) resulting from the pyrometallurgical nickel processing process of 27,854 kg CO2eq/t Ni. Several greenhouse gas reduction programs that can be implemented in the current pyrometallurgical process at PT Vale can contribute to reducing GHG emissions by 36.2% if all programs are successful.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Life Cycle Assessment (LCA), Greenhouse Gases (GHG), Global Warming Potential (GWP), Pirometalurgi, Hidrometalurgi |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN799.N6 Nickel--Metallurgy |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26101-(S2) Master Thesis |
| Depositing User: | Ignata Bungin |
| Date Deposited: | 14 Feb 2025 06:36 |
| Last Modified: | 14 Feb 2025 06:36 |
| URI: | http://repository.its.ac.id/id/eprint/118731 |
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