Pemanfaatan green inhibitor daun pandan wangi terhadap laju korosi pada baja api 5L grade B di lingkungan NaCl 3,5% dan H2SO41M

Rahardi, Andhi (2014) Pemanfaatan green inhibitor daun pandan wangi terhadap laju korosi pada baja api 5L grade B di lingkungan NaCl 3,5% dan H2SO41M. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

[img]
Preview
Text
2710100073-Undergraduate_Thesis.pdf

Download (3MB) | Preview

Abstract

Korosi merupakan fenomena alam yang sering terjadi pada dunia industri minyak dan gas. Pada lingkungan industri khususnya pada bagian konstruksi, instalasi, saluran transportasi terkandung unsur-unsur yang mampu mempercepat terjadinya reaksi oksidasi pada suatu material. Inhibitor dapat menghambat atau memperlambat suatu reaksi kimia atau dengan kata lain mampu memperlambat laju korosi. Tujuan dari penelitian ini adalah untuk mempelajari pengaruh ekstrak daun pandan wangi (Pandanus amaryllifolius Roxb.) yang mengandung antioksidan sebagai inhibitor dalam media korosif NaCl dan H2SO4. Dalam penelitian ini digunakan baja karbon API 5L Grade B dengan media korosif H2SO4 1 M dan NaCl 3,5 % dengan variasi konsentrasi dari ekstrak daun pandan wangi 0 mg/L, 100 mg/L, 200 mg/L, 300 mg/L, 400 mg/L dan 500 mg/L. Pada hasil pengujian menunjukkan adanya senyawa flavonoid pada ekstrak daun pandan wangi dan laju korosi turun seiring dengan penambahan inhibitor. Laju korosi menurun pada larutan NaCl 3,5 % yaitu sebesar 1,038 mpy. Untuk larutan H2SO4 1M laju korosi menurun sebesar 901,048 mpy. Efisiensi inhibitor tertinggi yang didapatkan di larutan NaCl 3,5 % yaitu sebesar 75,101 %. Untuk di larutan H2SO4 1M efisiensi inhibitor tertinggi yaitu sebesar 60,365 %. ====================================================================================================== Corrosion is a natural phenomenon that often occurs in the oil and gas industry. In industrial environments, especially in the construction, installation, transport channels contained elements that are able to accelerate the oxidation reaction on a material. Inhibitors can inhibit or slow down a chemical reaction, or in other words able to slow the rate of corrosion. The purpose of this research is to study the effect of leaves extract fragrant pandan (Pandanus amaryllifolius Roxb.). That contain antioxidants as inhibitors in the corrosive medium NaCl and H2SO4. This study used carbon steel API 5L Grade B with corrosive media H2SO4 1 M NaCl and 3.5% with variation of concentration of fragrant pandan leaf extract 0 mg / L, 100 mg / L, 200 mg / L, 300 mg / L, 400 mg / L and 500 mg / L. In the test results indicate the presence of flavonoid compounds in fragrant pandan leaves extract and corrosion rate decrease with the addition of inhibitors. Corrosion rate decreased to 3.5% NaCl solution is equal to 1.038 mpy. To a solution of 1M H2SO4 corrosion rate decreased by 901.048 mpy. The highest inhibitor efficiency obtained in 3.5% NaCl solution that is equal to 75.101%. 1M H2SO4 solution for at the highest inhibitor efficiency is equal to 60.365%.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 620.112 23 Rah p
Uncontrolled Keywords: Pandamus amaryllifolius roxb; antioksidan; media korosif
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > (S1) Undergraduate Theses
Depositing User: - Taufiq Rahmanu
Date Deposited: 10 Jul 2019 06:29
Last Modified: 10 Jul 2019 06:29
URI: http://repository.its.ac.id/id/eprint/63800

Actions (login required)

View Item View Item