Pemanfaatan Ekstrak Daun Enceng Gondok (Eichhornia Crassipes) Sebagai Inhibitor Organik Pada Baja API 5L Grade B Dalam Larutan HCl 1M

Permono, Rezki Akhmad (2019) Pemanfaatan Ekstrak Daun Enceng Gondok (Eichhornia Crassipes) Sebagai Inhibitor Organik Pada Baja API 5L Grade B Dalam Larutan HCl 1M. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Korosi adalah perubahan sifat material khususnya logam akibat reaksi dengan lingkungan sekitarnya. Salah satu cara untuk menghambat korosi adalah dengan penambahan inhibitor. Inhibitor organik merupakan inhibitor yang dianggap ramah lingkungan Dalam penelitian ini digunakan ekstrak daun enceng gondok sebagai inhibitor organik. Material yang digunakan adalah baja API 5L Grade B dalam larutan HCl 1M sebagai media korosif dengan konsentrasi ekstrak yang digunakan pada penelitian ini sebesar 100mg – 500mg dari jumlah larutan HCl 1M yang digunakan dalam pengujian. Jenis pengujian yang dilakukan pada penelitian ini adalah EIS (Electrochemical Impedance Spectroscopy), PDP (Potentiodynamic Polarization), SEM (Scanning Electron Microscopy), dan Pengurangan Berat (Weight Loss). Hasil pengujian menunjukkan adanya penurunan laju korosi pada baja API 5L Grade B dalam larutan HCl 1M ketika ditambahkan inhibitor ekstrak daun enceng gondok. Pada pengujian polarisasi potensiodinamik didapatkan laju korosi pada sample tanpa inhibitor sebesar 33,549 mm/year. Sedangkan pada pengujian dengan penambahan inhibitor paling besar sebesar 400mg, laju korosi turun menjadi 1,09 mm/year dengan nilai efisiensi 96,73%. Ini merupakan efisiensi tertinggi dari semua variabel konsentrasi ================================================================================================ Corrosion is a change of material properties especially metals due to reaction with it’s surrounding environment. One way to inhibit corrosion is by adding an inhibitor. Organic inhibitors are inhibitors that are considered environmentally friendly This study using enceng gondok leaves extract as an organicinhibitor. The material is API 5L Grade B steel in 1MHCl solution as corrosive medium with 100mg – 500mg of the amountof HCl 1M solution extractconcentration used in the test. The type of testing method thatused in this study is EIS (Electrochemical Impedance Spectroscopy), PDP (Potentiodynamic Polarization), SEM (Scanning Electrone Microscopy), and Weight Loss. The test results showed a decrease in corrosion rate in API 5L Grade B steel in 1M HCl solution when enceng gondok leaves extract inhibitor has been added. In potentiodynamic polarization testing, the corrosion rate of a sample without inhibitor addition was 33,549 mm/year. While the test with the addition of the largest amount of inhibitor of 400mg the corrosion rate decreased to 1,09 mm/year with 96,73% efficieny. That was the highest efficiency among all of the concentration variable

Item Type: Thesis (Undergraduate)
Additional Information: RSF 620.112 23 Per p-1 2019
Uncontrolled Keywords: Baja API 5L, Daun Enceng Gondok, HCL, Inhibitor Organik, Korosi
Subjects: Q Science > QD Chemistry > QD115 Electrochemical analysis
Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry
T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives
T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants
T Technology > TD Environmental technology. Sanitary engineering > TD455 Chemical precipitation. Coagulation. Flocculation. Water--Purification--Flocculation.
T Technology > TD Environmental technology. Sanitary engineering > TD883.5 Air--Pollution
T Technology > TP Chemical technology > TP248.3 Biochemical engineering. Bioprocess engineering
T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions: Faculty of Vocational > Mechanical Industrial Engineering
Depositing User: Rezki Akhmad Permono
Date Deposited: 03 Jan 2022 08:35
Last Modified: 03 Jan 2022 08:35
URI: https://repository.its.ac.id/id/eprint/61778

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