Studi Efektifitas Ekstrak Daun Asam Jawa Dan Ekstrak Kulit Melinjo Sebagai Inhibitor Organik Pada Baja Api 5l Grade B Di Lingkungan Nacl 3,5 % Ph 5

Rufaida, Hastya Anisa (2016) Studi Efektifitas Ekstrak Daun Asam Jawa Dan Ekstrak Kulit Melinjo Sebagai Inhibitor Organik Pada Baja Api 5l Grade B Di Lingkungan Nacl 3,5 % Ph 5. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Jenis baja karbon yang sering digunakan dalam industri minyak dan gas adalah baja API 5L. Permasalahan yang umum terjadi pada industri migas salah satunya adalah korosi. Upaya untuk mencegah korosi pada pipa dalam industri migas adalah dengan menambahkan inhibitor. Daun Asam Jawa dan Kulit Melinjo merupakan bahan organik yang dapat digunakan sebagai inhibitor organik. Dalam penelitian ini diaplikasikan pada baja API 5L Grade B di lingkungan NaCl 3,5% pH 5. Variasi konsentrasi dari inhibitor daun asam jawa dan kulit melinjo adalah 0, 100, 150, 200, 250, 300 mg/L. Untuk menganalisa pengaruh penambahan dari kedua inhibitor tersebut maka dilakukan serangkaian pengujian. Uji spectrometer untuk mengetahui komposisi kimia baja, uji Uv-Vis untuk mengetahui total kandungan inhibitor, uji FTIR, uji weight loss, Tafel polarisasi, dan EIS. Dari hasil uji weight loss diperoleh laju korosi terendah pada penambahan inhibitor daun asam jawa dan kulit melinjo masing-masing sebesar 2,58 mpy pada perendaman 14 hari dengan konsentrasi 300 mg/L dan 3,61 mpy pada perendaman 7 hari dengan konsentrasi 300 mg/L. Efisiensi inhibisi tertinggi diperoleh ketika penambahan inhibitor daun asam jawa dan kulit melinjo sebanyak 300 mg/L. Mekanisme inhibisi inhibitor daun asam jawa dan kulit melinjo cenderung bersifat fisisorpsi berdasarkan hasil perhitungan adsorpsi isotherm Langmuir. ======================================================================================================================== Type of carbon steel that often used in the oil and gas industry is API 5L steel. Problems that are common happens in the oil and gas industry is corrosion. The efforts are made to prevent corrosion in oil and gas industry is with the addition of inhibitor. Tamarindus Indica leaves and Gnetum Gnemun peels is organic materials which can be used as organic inhibitor. In this research API 5L grade B steel was applied in 3.5% NaCl pH 5. Various concentration of Tamarindus Indica leaves and Gnetum Gnemon peels is 0, 100, 150, 200, 250, and 300 mg/L. To analyze the effect of the addition from both materials then few tests was set. Spectrometry test to analyze the chemical composition of steel, Uv-Vis test to analyze total composition of inhibitor, FTIR test, weight loss test, tafel polarization, and EIS. The result from weight loss test was corrosion rate number each addition of inhibitor are 2,58 mpy for the immerse of 14 days and addition concentration 300 mg/L and 3,61 mpy for the immerse of 7 days and addition concentration 300 mg/L. The highest efficiency was obtained when the addition of 300 mg/L Tamarindus Indica leaves and Gnetum Gnemon peels. Inhibition mechanism of Tamarindus Indica leaves and Gnetum Gnemon peels tend to physisorption reaction based on calculation of adsorption isotherm Langmuir

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 620.112 23 Ruf s
Uncontrolled Keywords: Inhibitor, Daun Asam Jawa, Kulit Melinjo, Baja API 5L Grade B
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > (S1) Undergraduate Theses
Depositing User: Users 13 not found.
Date Deposited: 19 Sep 2017 07:13
Last Modified: 19 Sep 2017 07:13
URI: http://repository.its.ac.id/id/eprint/48862

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