Kajian Dampak Lingkungan Pada Proses Pre-treatment Limbah Cair Di Pabrik Pupuk Dan Bahan Kimia Dengan Metode Life Cycle Assessment (LCA)

Oktavia, Anjie Putri (2023) Kajian Dampak Lingkungan Pada Proses Pre-treatment Limbah Cair Di Pabrik Pupuk Dan Bahan Kimia Dengan Metode Life Cycle Assessment (LCA). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pabrik IB pupuk dan bahan kimia memiliki pre-treatment limbah cair dengan karakteristik limbahnya cenderung basa dengan pH > 8, serta kandungan amoniak total dan TKN-nya yang tinggi. Untuk mengolah limbah cair dengan karakteristik tersebut, digunakan teknologi stripper serta ekualisasi. Proses pengolahan limbah cair turut berkontribusi dalam menghasilkan emisi gas rumah kaca (GRK) seperti CO2, N2O, CH4, dan emisi non-GRK seperti NH3. Sumber emisi dapat berasal dari sumber langsung seperti degradasi bahan organik, sedangkan sumber tidak langsung berasal dari penggunaan bahan kimia dan konsumsi listrik selama proses pengolahan limbah cair. Penelitian ini bertujuan untuk mengidentifikasi nilai dampak lingkungan yang dihasilkan dari emisi penggunaan bahan kimia, pompa, konsumsi listrik serta aktivitas operasional lainnya selama proses pengolahan limbah cair. Metode Life Cycle Assessment (LCA) dipilih karena mampu mengidentifikasi kontribusi emisi serta dampak dari input pada tiap unit proses. Analisis menggunakan software SimaPro 9.4.0.2 dengan 12 kategori dampak pada metode ReCiPe 2016, yaitu 1) particulate matter, 2) human carcinogenic, 3) human non-carcinogenic, 4) global warming, 5) freshwater ecotoxicity, 6) marine ecotoxicity, 7) terrestrial ecotoxicity, 8) freshwater eutrophication, 9) marine eutrophication, 10) fossil resource scarcity, 11) ozone depletion, dan 12) terrestrial acidification. Program perbaikan dianalisis berdasarkan studi literatur dan diskusi. Berdasarkan hasil penelitian, kualitas air limbah pabrik IB bersifat basa dengan kandungan NH3 dan amoniak yang tinggi. Operasional pengolahan air limbah selama 24 jam dengan total konsumsi listrik sebesar 194.546,9 kWh/tahun. Penggunaan H2SO4 untuk netralisasi pH sebesar 9.922,18 kg/tahun. Hasil analisis LCA menunjukkan unit stripper sebagai hotspot proses dengan kategori dampak tertinggi yaitu marine eutrophication sebesar 331.726,76 kg N eq. Program perbaikan untuk mengurangi dampak lingkungan yaitu optimasi kinerja unit stripper dan recovery off-gas stripper. Program perbaikan ini mampu mereduksi dampak marine eutrophication sebesar 36,5%
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The fertilizer and chemical IB factory has different wastewater pre-treatment processes than the other factories with their characteristics tending to be alkaline with a pH > 8 and high total ammonia and TKN concentrations. To treat wastewater with these characteristics, the IB factory uses stripper technology and equalization. The wastewater treatment process also contributes to the greenhouse gas emissions (GHG) such as CO2, N2O, CH4, and non-GHG emissions such as NH3. Emissions come from direct sources (such as the degradation of organic matter) and indirect sources (chemicals consumption and electricity consumption) during the wastewater pre-treatment process. This study aims to identify the value of the environmental impact of emissions that produced by chemicals, pumps, electricity consumption, and other operational activities during the wastewater pre-treatment process. The Life Cycle Assessment (LCA) method is chosen because it is able to identify the contribution of emissions and the impact of inputs on each process unit. SimaPro 9.4.0.2 software was used for LCA analysis with 12 environmental impacts category, such as 1) particulate matter, 2) human carcinogenic, 3) human non-carcinogenic, 4) global warming, 5) freshwater ecotoxicity, 6) marine ecotoxicity, 7) terrestrial ecotoxicity, 8) freshwater eutrophication, 9) marine eutrophication, 10) fossil resource scarcity, 11) ozone depletion, and 12) terrestrial acidification. The alternative recommendations to reduce the environmental impact were based on discussion and literature review. Based on the analysis, the quality of wastewater is alkaline with high NH3 and ammonia concentrations. Wastewater pre-treatment operated for 24 hours with 194.546,9 kWh/year of total electricity consumption. The use of H2SO4 to neutralize the pH is 9,922.18 kg/year. The results of the LCA analysis showed that the hotspot process unit is the stripper (D-905) and the environmental impact category with the highest value is marine eutrophication (331,726,76 kg N eq). Optimization of stripper performance and stripper off-gas recovery can reduce 36,5% of marine eutrophication impact value

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Life Cycle Assessment, Metode ReCiPe 2016, Pabrik Pupuk dan Bahan Kimia, Pre-treatment Air Limbah, Software SimaPro, Fertilizer and Chemical Factory, Life Cycle Assessment, ReCiPe 2016 Method, Software SimaPro, Wastewater Pre-Treatment
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD194.6 Environmental impact analysis
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Anjie Putri Oktavia
Date Deposited:	25 Jul 2023 02:34
Last Modified:	25 Jul 2023 02:34
URI:	http://repository.its.ac.id/id/eprint/99177

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