Analisa Pengaruh Variasi Diameter Lubang Katalis Pada Sistem Catalytic Converter Terhadap Kadar Gas Buang NOx Berbasis Eksperimen

Fikri, Muhammad Raihan Alwanul (2024) Analisa Pengaruh Variasi Diameter Lubang Katalis Pada Sistem Catalytic Converter Terhadap Kadar Gas Buang NOx Berbasis Eksperimen. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Meningkatnya jumlah kapal kecil yang beroperasi juga menghasilkan dampak terhadap penurunan kualitas udara yang dapat merusak ekosistem. Oleh karena itu diperlukannya suatu teknologi yang dapat mengurangi gas emisi yang dari motor diesel salah satunya adalah Catalytic Converter. Namun karena mahalnya harga Catalytic Converter konvensional yang beredar dipasaran, peneliti menggunakan bahan yang jauh lebih murah yaitu zeolit dan semen putih. Terdapat beberapa hal yang mempengaruhi efesiensi dari sistem Catalytic Converter dalam mengurangi kadar emisi gas buang salah satunya adalah luas permukaan katalis yang mengalami kontak langsung dengan gas buang. Pada penelitian ini akan dikaji kadar emisi NOX yang dikeluarkan oleh motor diesel dengan variasi diameter lubang katalis yang berbeda. Metode yang digunakan pada penelitian ini adalah eksperimen, menggunakan katalis dengan variasi diameter lubang 6 mm, 7 mm, 8 mm, 9 mm, dan 10 mm sebagai pembanding. Pengambilan data dilakukan menggunakan katalis yang dibentuk oleh campuran zeolit-semen putih dengan perbandingan 1:1 pada load 25%, 50%, 75%, dan 100%. Didapat berdasarkan rata-rata emisi yang dihasilkan tiap variasi pada setiap load, didapat bahwa katalis dengan diameter lubang 8 mm memiliki emisi NOX paling rendah dibanding variasi katalis lainnya yaitu sebesar 265,5 ppm, sedangkan pada variasi 6 mm, 7 mm, 9 mm, dan 10 mm berturut-turut sebesar 277,3 ppm, 274 ppm, 268,5 ppm, dan 273,8 ppm. Namun penggunaan katalis yang menggunakan campuran zeolite-semen putih dengan perbandingan 1:1 malah memperburuk emisi NOX yang dihasilkan hingga mencapai paling tinggi 31,5 % dibandingkan dengan yang tanpa menggunakan katalis.
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The increasing number of small vessels operating also has an impact on reducing air quality which can damage the ecosystem. Therefore, a technology that can reduce gas emissions from diesel motors is needed, one of which is a Catalytic Converter. However, due to the high price of conventional Catalytic Converters on the market, researchers use much cheaper materials, namely zeolite and white cement. There are several things that affect the efficiency of the Catalytic Converter system in reducing exhaust emission levels, one of which is the surface area of the catalyst that is in direct contact with the exhaust gas. In this study, the NOX emission levels released by diesel motors with different catalyst hole diameter variations will be studied. The method used in this research is experimental, using catalysts with variations in hole diameter of 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm as a comparison. Data was collected using a catalyst formed by a mixture of zeolite-white cement in a ratio of 1:1 at loads of 25%, 50%, 75%, and 100%. Based on the average emissions produced by each variation at each load, it was found that the catalyst with a hole diameter of 8 mm had the lowest NOX emissions compared to other catalyst variations which amounted to 265.5 ppm, while the variations of 6 mm, 7 mm, 9 mm, and 10 mm were 277.3 ppm, 274 ppm, 268.5 ppm, and 273.8 ppm respectively. However, the use of a catalyst that uses a zeolite-white cement mixture in a ratio of 1:1 actually worsens the NOX emissions produced to a maximum of 31.5% compared to those without using a catalyst.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Catalytic Converter, Zeolite, White Cement, Emission.
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD883.5 Air--Pollution T Technology > TJ Mechanical engineering and machinery > TJ762.E93 Exhaust systems
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Muhammad Raihan Alwanul Fikri
Date Deposited:	19 Feb 2024 08:50
Last Modified:	19 Feb 2024 08:50
URI:	http://repository.its.ac.id/id/eprint/107601

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