Ambarwasih, Retno and Mitha Pratiwi, Vania (2019) Pengaruh Konsentrasi, Temperatur, dan Waktu Perendaman Ekstrak Biji Juwet (Syzygium cumini) sebagai Inhibitor Baja API 5L Grade B Dalam Media HCL 1M. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Keanekaragaman tanaman yang ada di Indonesia ,dapat dimanfaatkan sebagai tanaman obat salah satunya adalah tanaman juwet, disinyalir tanaman ini memiliki kandungan antioksidan yang tinggi, sehingga dapat dimanfaatkan inhibitor korosi. Korosi merupakan suatu peristiwa kerusakan atau penurunan kualitas suatu bahan logam yang disebabkan oleh terjadinya reaksi terhadap lingkungan,inhibitor merupakan salah satu metode dalam pengendalian korosi. Untuk mengetahui pemanfaatan Biji Juwet lebih lanjut, maka dilakukan penelitian Ekstrak Biji Juwet sebagai inhibitor organik yang diaplikasikan pada Baja API 5L grade B dalam media HCl 1M, dengan variasi konsentrasi, temperatur, dan waktu perendaman. Metode maserasi dengan larutan methanol digunakan untuk mengekstrak biji juwet. Pengujian yang dilakukan meliputi weight loss , FTIR, Polarisasi Tafel , EIS, dan AAS. Hasil penelitian membuktikan bahwa ektrak biji juwet dapat dijadikan inhbitor yang baik. Dari hasil uji weightloss diperoleh efisiensi inhibisi tertinggi pada konsentrasi 500 ppm sebesar 91,0%, dan efisiensi tertinggi pada temperatur 50 ºC, sebesar 74,01%, dengan waktu perendaman hari ke-6 memiliki efisiensi tertinggi yaitu sebesar 79,01%. Hasil uji FTIR ekstrak biji juwet memiliki beberapa gugus seperti O-H, C=O, dan N=O. Pengujian Polarisasi tafel menunjukkan bahwa inhibitor ini bertipe mixing inhibitor. Pengujian EIS menunjukkan bahwa penambahan inhibitor dapat menghambat transfer muatan dari permukaan logam ke media larutan.Dan mekanisme inhibisi terabsorpsi secara fisik (physical adsorption).
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The diversity of plants in Indonesia, can be used as medicinal plants, one of which is juwet plants, allegedly this plant has a high antioxidant content, so that corrosion inhibitors can be utilized. Corrosion is an event of damage or deterioration in the quality of a metal caused by a reaction to the environment, an inhibitor is one method of controlling corrosion. To find out the utilization of Juwet Seeds further, the research of Juwet Seed Extract as an organic inhibitor was applied to API 5L grade B steel in 1M HCl media, with variations in concentration, temperature, and immersion time. The maceration method with methanol solution is used to extract juwet seeds. Tests carried out include weight loss, FTIR, Tafel Polarization, EIS, and AAS. The results of the study prove that juvenile seed extract can be a good inhbitor. From the results of weightloss the highest inhibition efficiency obtained at a concentration of 500 ppm was 91.0%, and the highest efficiency at a temperature of 50 ºC, was 74.01%, with the 6th day immersion having the highest efficiency of 79.01%. FTIR test results Juwet seed extract has several groups such as O-H, C = O, and N = O. Tafel Polarization testing shows that this inhibitor has a mixing inhibitor type. EIS testing shows that the addition of inhibitors can inhibit the transfer of charge from the metal surface to the solution media. And the inhibition mechanism is absorbed physically (physical adsorption).
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Inhibitor korosi, Polarisasi, Electrochemical Impedance Spectroscopy, Weightloss, Corrosion inhibitors, Polarization |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.75 Corrosion-resistant materials |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Retno Ambarwasih |
| Date Deposited: | 20 May 2024 06:55 |
| Last Modified: | 20 May 2024 06:55 |
| URI: | http://repository.its.ac.id/id/eprint/64716 |
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