Addery, Kevin (2019) Pengaruh Variasi Konsentrasi, Waktu Perendaman dan Temperatur Ekstrak Daun Kenikir Sebagai Inhibitor Organik pada Laju Korosi Baja API 5L Grade B Dalam Larutan HCl 1 M. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baja API 5L grade B merupakan pipa baja yang paling sering ditemukan pada industri minyak dan gas, geothermal, petrokimia dll. Walaupun begitu Baja API 5L grade B memiliki ketahanan korosi yang rendah bila dibandingkan stainless steel. Inhibitor adalah bentuk pencegahan korosi terhadap penggunaan Baja API 5L grade B namun sifatnya yang beracun memicu kerusakan alam. Inhibitor organik merupakan metode pencegahan ramah lingkungan namun daya tahan dan ketahanannya terhadap temperatur rendah. Daun Kenikir merupakan tanaman yang mudah dijumpai di Indonesia, kandungan seperti saponin, flavonoid, dan alkaloid menyebabkan aktivitas antioksidan dari tanaman ini cukup tinggi. Pada penelitian ini Daun kenikir dipilih sebagai inhibitor organik dalam media HCl 1 M, dengan variabel konsentrasi 0ppm, 800ppm, 1600ppm, 2400ppm, dan 3200ppm. Temperatur 40C, 50C, dan 60C dan Waktu perendaman 2, 4, 6, 8, 10, dan 12 hari. Pengujian yang dilakukan meliputi FTIR, EIS, Potensiodinamic, dan weightloss. Adapun hasil weightloss menunjukkan jika efisiensi tertinggi terdapat pada baja API 5L Grade B dengan konsentrasi 800ppm bernilai 72,85996 % pada temperatur 40C bernilai 80,66982 % dan pada waktu perendaman 2 hari bernilai 96,40481% sedangkan efisiensi terendah terdapat pada konsentrasi 3200ppm bernilai 61,86579%, pada temperatur 60C bernilai 76,30441%, dan pada waktu perendaman 12 hari bernilai 0,998036% . Hasil FTIR menunjukkan gugus fungsi seperti O-H; C≡N; NH3+ dan NO2 yang teradsorpsi pada permukaan baja. Hasil AAS menunjukkan kadar Fe terlarut ketika diberikan inhibitor berkurang. Hasil Potensiodinamik menunjukkan inhibitor mengurangi nilai Icorr. Dan pengujian EIS menunjukkan pemberian inhibitor menunjukkan penurunan Rs dan kenaikan Rp saat pemberian inhibitor.
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API 5L grade B steel is the most common steel pipe in the oil and gas, geothermal, petrochemical, etc. industries. However, API 5L grade B steel has a low corrosion resistance compared to stainless steel. Inhibitor is a form of preventing corrosion from the use of API 5L grade B Steel but its toxic nature triggers natural damage. Organic inhibitors are an environmental friendly prevention method but their durability and resistance to low temperatures. Kenikir leaves are plants that are easily found in Indonesia, contain such as saponins, flavonoids, and alkaloids cause the antioxidant activity of this plant to be quite high. In this study, kenikir leaves were chosen as organic inhibitors in HCl 1 M media, with variables of 0ppm, 100 ppm, 800ppm, 1600ppm, 2400ppm and 3200ppm. Temperatures of 40C, 50C, and 60C and immersion times of 2, 4, 6, 8, 10 and 12 days. Tests carried out include FTIR, EIS, Potentiodynamic, and weight loss. The weight loss results show that the highest efficiency is found in API 5L Grade B steel with a concentration of 800ppm valued 72.86% at a temperature of 40C valued at 80.67% and 2 days immersion valued 96.40481% while the lowest efficiency at 3200ppm is 61. 87%, at a temperature of 60C it is worth 76.30%, and at the time of immersion 12 days is worth 0.99%. FTIR results show functional groups such as O-H; C≡N; NH3 + and NO2 are adsorbed on the steel surface. The AAS results show dissolved Fe levels when the inhibitor is given reduced. Potentiodynamic results show Icorr reducing value inhibitors. And EIS testing showed that giving inhibitors showed a decrease in Rs and an increase of Rp when inhibitors added.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Baja API 5L Grade B, Inhibitor, Daun Kenikir, HCl 1M, Konsentrasi, Temperatur, Waktu Perendaman |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion T Technology > TA Engineering (General). Civil engineering (General) > TA467 Iron and Steel Corrosion and protection against corrosion |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Kevin Addery |
| Date Deposited: | 22 Jul 2026 07:21 |
| Last Modified: | 22 Jul 2026 07:21 |
| URI: | http://repository.its.ac.id/id/eprint/66051 |
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