Nurdin, Rafly Rizqullah (2025) Evaluasi Program Dekarbonisasi dalam Transisi Energi Rendah Karbon Berbasis Life Cycle Assessment dan Analytical Hierarchy Process pada Produksi Gas Alam. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Indonesia memperbarui komitmen penurunan emisi gas rumah kaca melalui Nationally Determined Contribution (NDC), sementara kegiatan hulu migas masih menghadapi tantangan emisi dari flaring dan konsumsi energi proses. Penelitian ini mengevaluasi program dekarbonisasi pada produksi gas alam SP BBS PT Z (gas berkadar CO2 tinggi) dengan mengintegrasikan Life Cycle Assessment (LCA) untuk mengidentifikasi hotspot dampak lingkungan dan Analytical Hierarchy Process (AHP) untuk memprioritaskan alternatif teknologi CO2 removal (Pressure Swing Adsorption/PSA, Temperature Swing Adsorption/TSA, dan Amine Scrubbing/AmS) berdasarkan kriteria manfaat, biaya, dan risiko. LCA dilakukan dengan batas sistem cradle-to-gate (well-to-facility) sesuai SNI ISO 14040/14044, dimodelkan pada SimaPro 9.5 menggunakan ReCiPe 2016 Midpoint (H) dan CML-IA Baseline berbasis data operasi 2023. Hasil menunjukkan Global Warming Potential (GWP) total sekitar 1,38×10⁸ kg CO2-eq (≈19,2 kg CO2-eq/MJ) dengan kontribusi dominan unit flare sebesar 96,87%. Unit kompresor berkontribusi signifikan pada pengasaman, eutrofikasi, dan toksisitas melalui emisi terkait NOx. Hasil AHP menunjukkan PSA unggul pada agregasi manfaat (0,7167) dan biaya (0,5332), sedangkan AmS memiliki profil risiko terbaik (0,6906). Sintesis manfaat–biaya menggunakan rasio berbobot AHP (BCR = Wmanfaat/Wbiaya) menghasilkan BCRPSA = 1,3441; BCRTSA = 0,6374; dan BCRAmS = 0,5545; uji sensitivitas satu arah (±20% pada sub-kriteria dominan) mengonfirmasi peringkat stabil (PSA > TSA > AmS). Penelitian ini merekomendasikan prioritas penurunan flaring serta implementasi PSA bertahap (stage-gate) yang didukung mitigasi risiko dan penguatan MRV, disertai kerangka model bisnis ringkas untuk pemanfaatan CH4 (gas-to-value) dan pengelolaan CO2 (CCS/reinjeksi, CCU bila layak).
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Indonesia has renewed its greenhouse-gas mitigation commitment through the Nationally Determined Contribution (NDC), while upstream oil and gas operations remain constrained by emissions from flaring and process energy use. This study evaluates decarbonization programs for natural gas production at SP BBS, PT Z (high-CO2 gas) by integrating Life Cycle Assessment (LCA) to identify environmental hotspots and the Analytical Hierarchy Process (AHP) to prioritize CO2-removal alternatives—Pressure Swing Adsorption (PSA), Temperature Swing Adsorption (TSA), and Amine Scrubbing (AmS)—under benefit, cost, and risk criteria. A cradle-to-gate LCA (well-to-facility) following SNI ISO 14040/14044 was modelled in SimaPro 9.5 using ReCiPe 2016 Midpoint (H) and CML-IA Baseline based on 2023 operational data. Results indicate a total Global Warming Potential (GWP) of approximately 1.38×10⁸ kg CO2-eq (≈19.2 kg CO2-eq/MJ), dominated by the flare unit (96.87%). Compressors contribute substantially to acidification, eutrophication, and toxicity through NOx-related emissions. AHP results show PSA performs best on aggregated benefit (0.7167) and cost (0.5332), while AmS exhibits the most favorable risk profile (0.6906). Benefit–cost synthesis using an AHP-weighted ratio (BCR = Wbenefit/Wcost) yields BCRPSA = 1.3441, BCRTSA = 0.6374, and BCRAmS = 0.5545; one-way sensitivity (±20% on dominant sub-criteria) confirms a stable ranking (PSA > TSA > AmS). The findings recommend prioritizing flaring reduction and implementing PSA through a stage-gate approach supported by risk mitigation and strengthened monitoring–reporting–verification (MRV), complemented by a concise business-model pathway for CH₄ gas-to-value utilization and CO₂ management (reinjection/CCS, context-dependent CCU, and MRV readiness).
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | dekarbonisasi, produksi gas alam, life cycle assessment (LCA), analytical hierarchy process (AHP), benefit–cost ratio (BCR), CO2 removal, decarbonization, natural gas production |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD194.6 Environmental impact analysis T Technology > TD Environmental technology. Sanitary engineering > TD883 Air quality management. T Technology > TD Environmental technology. Sanitary engineering > TD890 Global Environmental Monitoring System T Technology > TP Chemical technology > TP350 Natural gas--Drying. |
| Divisions: | Interdisciplinary School of Management and Technology (SIMT) > 78201-System And Technology Innovation |
| Depositing User: | Rafly Rizqullah Nurdin |
| Date Deposited: | 27 Jan 2026 03:24 |
| Last Modified: | 27 Jan 2026 03:24 |
| URI: | http://repository.its.ac.id/id/eprint/130413 |
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