Safitri, Dinda (2024) EKSTRAK TANNIN DAUN LAMUN (Cymodocea rotundata) DARI PERAIRAN BANTEN SEBAGAI INHIBITOR KOROSI BAJA RINGAN (Canal C75) DENGAN METODE PERENDAMAN. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Corrosion is a process of degradation of metal properties caused by a reaction between metals and a corrosive environment. One fairly good method to inhibit corrosion is by adding inhibitors. Seagrass of Cymodocea rotundata is one of the organic inhibitors that can inhibit the rate of corrosion. The purpose of this study is to identify the content of tannin compounds from Cymodocea rotundata qualitatively, as well as to determine the effect of inhibitor concentration and the effect of immersion time on corrosion rate and percent inhibition efficiency. This study was carried out with two variations, namely variations in the addition of seagrass leaf extract inhibitor concentrations, and variations in the length of soaking time in steel samples. The procedures in this study consisted of preparation of steel samples, preparation of seagrass leaf extract, preparation of FeCl3 solution, phytochemical screening test, preparation of corrosive media, preparation of parent solution, preparation of test solution, and measurement of corrosion rate. The result of this study is that the highest corrosion rate value is produced at a concentration of 500 ppm with a soaking time of 21 days, which is 0.6773 mmpy with an efficiency of 11.36%, while the lowest corrosion rate value is produced at a concentration of 1500 ppm with a soaking time of 14 days, which is 0.0130 mmpy with an efficiency of 97.67%. Keywords: steel, efficiency, inhibitors, corrosion, and seagrass.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Korosi merupakan proses degradasi sifat logam yang disebabkan oleh reaksi antara logam dengan lingkungan yang korosif. Salah satu metode yang cukup baik untuk menghambat korosi adalah dengan penambahan inhibitor. Lamun jenis Cymodocea rotundata merupakan salah satu inhibitor organik yang dapat menghambat laju korosi. Tujuan dari penelitian ini yaitu untuk mengidentifikasi kandungan senyawa tanin dari lamun Cymodocea rotundata secara kualitatif, serta mengetahui pengaruh konsentrasi inhibitor dan pengaruh waktu perendaman terhadap laju korosi dan persen efisiensi inhibisi. Penelitian ini dilakukan dengan dua variasi yaitu variasi penambahan konsentrasi inhibitor ekstrak daun lamun, dan variasi lama waktu perendaman sampel baja. Prosedur dalam penelitian ini terdiri dari persiapan sampel baja, pembuatan ekstrak daun lamun, pembuatan larutan FeCl3, uji skrining fitokimia, pembuatan media korosif, Pembuatan larutan induk, pembuatan larutan uji, dan pengukuran laju korosi. Hasil dari penelitian ini yaitu nilai laju korosi tertinggi dihasilkan pada konsentrasi 500 ppm dengan waktu perendaman 21 hari yaitu 0,6773 mmpy dengan efisiensi sebesar 11,36%, sedangkan nilai laju korosi terendah dihasilkan pada konsentrasi 1500 ppm dengan waktu perendaman 14 hari yaitu 0,0130 mmpy dengan efisiensi sebesar 97,67%. Kata kunci: baja, efisiensi, inhibitor, korosi, dan lamun. | |||||||||
| Subjects: | Communication > Science Journalism Communication > Communication (General) |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 24201-Jurusan Teknik Kimia |
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| Depositing User: | Ms Dinda Safitri | |||||||||
| Date Deposited: | 19 Aug 2024 13:44 | |||||||||
| Last Modified: | 19 Aug 2024 13:44 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/41068 |
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