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All Journal INTEK: Jurnal Penelitian Majalah Teknik Industri
Samosir, Damianus
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Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Proteksi Korosi Pada Baja Api 5l X65 Dengan Inhibitor Organik Ekstrak Daun Bawang Dayak (Eluetherme americana Merr) Dalam Lingkungan Asam HCl 0,5 M Samosir, Damianus; Oko, Syarifuddin; Mustafa
Majalah Teknik Industri Vol 30 No 2 (2022): Majalah Teknik Industri Vol.30 No.2 Desember 2022
Publisher : Unit Penelitian dan Pengabdian Masyarakat (UPPM) Politeknik ATI Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61844/majalahteknikindustri.v30i2.470

Abstract

Bawang dayak (Eleutherine americana Merr.) merupakan salah satu tanaman hortikultura yang dapat dijadikan sebagai tanaman berkhasiat. Daun bawang dayak sendiri memiliki beberapa komponen bioaktif, yaitu flavanoid, fenolik dan tanin. Senyawa tanin dapat membentuk senyawa komplek dengan Fe(III) di permukaan logam, sehingga dapat menurunkan laju korosi. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi inhibitor ekstrak daun bawang dayak (Eleutherine americana Merr) sebagai proteksi terhadap penurunan nilai laju korosi pada baja karbon API 5 L dalam lingkungan HCl 0,5 M. Pada penelitian ini daun bawang dayak dikeringkan. Setelah itu, dilakukan proses ekstraksi menggunakan pelarut etanol 96% selama 10 hari. Hasil ekstrak ditambahkan kedalam larutan HCl 0,5 M dengan variasi konsentrasi 0%, 1%, 2%, 3%, 4%, 5% dan 6%. Plat baja API 5L direndam selama 10 hari. Nilai laju korosi diukur dengan metode weight loss. Didapatkan kemampuan inhibisi terbaik pada penambahan konsentrasi inhibitor sebanyak 5% dengan kemampuan menurunkan nilai laju korosi menjadi 4,73 mpy.
Purification of Used Engine Oil by Pyrolysis– Adsorption Method Assisted Coal Activated Carbon Alwathan, Alwathan; Mohd-Setapar, Siti Hamidah; Irwan, Muh.; Thahir, Ramli; Harjanto, Harjanto; Wahyudi, Wahyudi; Sirajuddin, Sirajuddin; Samosir, Damianus; Okko, Sarifudin; Ayu, Sekar; Toyo, Rahmat Budi; Fadilah, Muhammad Reza
INTEK: Jurnal Penelitian Vol 11 No 1 (2024): April 2024
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v11i1.4685

Abstract

The increase in the use of engine vehicles every year is directly proportional to the amount of engine oil waste produced. Used engine oil is a class of hazardous waste that is harmful to the environment. This study aims to purify the base fuel from pyrolysis of waste engine oil by comparing integrated and non-integrated pyrolysis adsorption purification methods using activated low-rank coal as an adsorbent medium. The method used in this study is Pyrolysis using activated carbon from low-rank coal that has been carbonized with a temperature of 600 ° C and activated using H3PO4-NaHCO3. Pyrolysis is carried out by adding activated carbon with a ratio of 10% (w / w) of 11 grams from the volume of base fuel samples and Pyrolysis temperature of 350°C, then carried out by a variety of methods, namely the adsorption method followed by Pyrolysis, Pyrolysis followed by adsorption, and Pyrolysis adsorption integration. From this study, the optimum value of purification was obtained in the variation of integration adsorption pyrolysis with a density of 0.7631gr / ml and a specific gravity value of 0.7639 and an API degree of 53.7318, while for viscosity value of 0.5542 cP. The results of the product analysis have entered the standard specification value of gasoline or gasoline.
Co-Authors Alwathan Alwathan Ayu, Sekar Fadilah, Muhammad Reza HARJANTO HARJANTO Irwan, Muh. Mohd-Setapar, Siti Hamidah Mustafa Okko, Sarifudin Oko, Syarifuddin Ramli Thahir Sirajuddin Sirajuddin Toyo, Rahmat Budi Wahyudi Wahyudi