Persada, Galang Putra and Man'us, Man'us (2024) KEMAMPUAN EKSTRAK SILIKA SEBAGAI BIO-INHIBITOR KOROSI PADA MILD STEEL DALAM AIR DEMINERALISASI. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.

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Abstract

Corrosion can be defined as a discoloration, deterioration, destructive phenomenon of materials as a result of redox reactions. Inhibitors are preventive measures against corrosive attack on metallic materials. Corrosion inhibitors have been frequently studied, as they represent a simple solution for the protection of metals against corrosion in aqueous environments. The purpose of this study is to determine the inhibition efficiency of rice husk silica and synthetic as corrosion inhibitors with various concentrations in demineralized water media and the effect of mild steel immersion time on mild steel corrosion rate, as well as the effect of temperature on mild steel corrosion rate. This study begins with the preparation of materials including mild steel preparation and silica extract bio-inhibitor preparation. Then the soaking process is carried out with demineralized water which is influenced by soaking time, and inhibitor concentration. Furthermore, weight loss measurements were taken to determine the inhibition efficiency. From the experimental results, the rice husk bioinhibitor obtained the highest inhibition efficiency value of 79% with a concentration of 1500 ppm at a soaking time of 4 hours, and the lowest was 16% with a concentration of 1000 ppm at a soaking time of 4 hours while in synthetic silica, the highest inhibition efficiency value was 90% with a concentration of 1500 ppm at a soaking time of 3 hours and the lowest was 32.34% with a concentration of 1250 ppm at a soaking time of 4 hours. The lowest corrosion rate was 36.92 × 10−4 mpy for rice husk silica and 18.12 × 10−4 mpy for synthetic silica and the highest average value for samples without added inhibitor was 238.39 × 10−4 mpy for rice husk silica and 342.12 × 10−4 mpy for synthetic silica.

Item Type:	Thesis (S1)
Contributors:	Contribution Contributors NIP/NIM Thesis advisor PRAMUDITA, MARTA 197601132009122001
Additional Information:	Korosi dapat didefinisikan sebagai suatu perubahan warna, penurunan kualitas, fenomena desktruktif dari bahan sebagai akibat adanya reaksi redoks. Inhibitor adalah tindakan pencegahan terhadap serangan korosif pada bahan logam. Inhibitor korosi telah sering dipelajari, karena inhibitor menunjukkan solusi sederhana untuk perlindungan logam terhadap korosi di lingkungan berair. Tujuan dari penelitian ini adalah mengetahui efisiensi inhibisi dari silika sekam padi dan sintetis sebagai inhibitor korosi dengan berbagai konsentrasi pada media air demineralisasi dan pengaruh waktu perendaman mild steel terhadap laju korosi mild steel, serta pengaruh temperatur terhadap laju korosi mild steel. Penelitian ini dimulai dengan melakukan persiapan bahan diantaranya persiapan mild steel dan persiapan bio-inhibitor ekstrak silika. Kemudian dilakukan proses perendaman dengan air demineralisasi yang dipengaruhi oleh waktu rendaman, dan konsentrasi inhibitor. Selanjutnya dilakukan pengukuran weight loss untuk mengetahui efisiensi inhibisi. Dari hasil percobaan, bahwa bioinhibitor sekam padi mendapatkan nilai efisiensi inhibisi tertinggi yaitu 79% dengan konsentrasi 1500 ppm pada waktu perendaman 4 jam, dan terendah yaitu 16% dengan konsentrasi 1000 ppm pada waktu perendaman 4 jam sedangkan pada silika sintetis, nilai efisiensi inhibisi tertinggi yaitu 90% dengan konsentrasi 1500 ppm pada waktu perendaman 3 jam dan terendah yaitu 32,34% dengan konsentrasi 1250 ppm pada waktu perendaman 4 jam. Laju korosi terendah yaitu pada silika sekam padi sebesar 36,92 × 10−4 mpy dan silika sintetis 18,12 × 10−4 mpy dan nilai rata-rata tertinggi pada sampel yang tidak ditambahkan inhibitor sebesar 238,39 × 10−4 mpy untuk silika sekam padi dan silika sintetis sebesar 342,12 × 10−4 mpy.
Subjects:	T Technology > TP Chemical technology
Divisions:	03-Fakultas Teknik 03-Fakultas Teknik > 24201-Jurusan Teknik Kimia
Depositing User:	Galang Putra Persada
Date Deposited:	29 Jul 2024 08:54
Last Modified:	29 Jul 2024 08:54
URI:	http://eprints.untirta.ac.id/id/eprint/39717

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