Pengaruh Penambahan Ekstrak Kulit Buah Nipah sebagai Green Corrosion Inhibitor terhadap Laju Korosi pada Baja Karbon ST37

Ulikaryani, Ulikaryani; Fadlilah, Ilma; Jati, Unggul Satria

doi:10.32497/jrm.v17i3.4012

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…Figure 5e shows a non-porous surface of mild steel with only a few lumps and voids. This is due to the secondary metabolites contained in acacia bark extract (Acacia mangium Willd) and KI adsorbed on the surface of the steel and based on research by Cang et al [29] and Ulikaryani et al [30], who said that the addition of plant extracts with iodide ions could effectively provide synergistic inhibition to reduce the occurrence of corrosion rate processes and increase the percentage of inhibition efficiency. .…”

Section: Discussionmentioning

confidence: 99%

A MIXTURE OF ACACIA BARK EXTRACT (Acacia mangium Willd) AND POTASSIUM IODIDE AS A CORROSION INHIBITOR IN SULFURIC ACID SOLUTION

Gusti,

Gunawan,

Muhammad

et al. 2023

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Corrosion is a decrease in the quality of a metal material caused by a reaction with the environment. Corrosion cannot be eliminated, but corrosion can be slowed down in several ways by adding corrosion inhibitors and synergistic effects. Acacia bark extract (Acacia mangium Willd) with the addition of 0.02 M KI has the potential as a corrosion inhibitor for steel because it contains secondary metabolites, so it can provide a synergistic effect and increase the value of inhibition efficiency on steel. This research aimed to analyze the effect of a mixture of acacia bark extracts (Acacia mangium Willd) with the addition of KI on inhibition efficiency corrosion of mild steel in sulfuric acid media. The method used in this study is the method of weight loss, adsorption isotherms, and thermodynamic parameters, which were carried out by varying the concentration of acacia bark extract and the immersion temperature of the steel. To strengthen the research results, characterization was carried out using FTIR and SEM. The results showed that the corrosion rate of mild steel immersed in 0.75 M H2SO4 corrosive medium with the addition of 0.02 M KI increased with increasing immersion temperature. These results are reinforced by the results of FTIR and SEM analysis which show that there is an interaction between mild steel and acacia bark extract (Acacia mangium Willd) and KI 0.02 M. Based on the thermodynamic parameters, the resulting values of ∆Hads, ∆Gads, and ∆Sads show that the adsorption process of acacia bark extract (Acacia mangium Willd) in corrosive medium H2SO4 0.75 M with the addition of 0.02 M KI took place spontaneously, showing the type of physical adsorption, adsorbed stable, the adsorption process was exothermic and the degree of irregularity in the adsorption process. The inhibition efficiency of acacia bark extract (Acacia mangium Willd) with the addition of 0.02 M KI was highest at 60 °C with an extract concentration of 2.5 g/L of 81%. The higher the immersion temperature, the greater the resulting synergistic effect

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Section: Discussionmentioning

confidence: 99%

A MIXTURE OF ACACIA BARK EXTRACT (Acacia mangium Willd) AND POTASSIUM IODIDE AS A CORROSION INHIBITOR IN SULFURIC ACID SOLUTION

Gusti,

Gunawan,

Muhammad

et al. 2023

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“…Limbah kulit buah nipah saat ini baru dimanfaatkan sebagai bahan baku briket arang [13] dan asap cair [14]. Sedangkan, limbah kulit buah nipah telah diteliti memiliki kandungan tanin terkondensasi dengan ciri berwarna hijau kehitaman [15].…”

Section: Gambar 1 Green Corrosion Inhibitorunclassified

“…Penelitian sebelumnya diketahui bahwa tannin terkondensasi banyak terkandung pada tanaman nipah. Penelitian tersebut juga menyebutkan campuran esktrak kulit buah nipah dapat menghambat laju korosi pada logam baja karbon ST 37 [15].…”

Section: Gambar 2 Limbah Kulit Buah Nipahunclassified

Optimalisasi Persentase Berat Ekstrak Kulit Buah Nipah sebagai Green Corrosion Inhibitor dengan Variasi Suhu dan Lama Paparan

Ulikaryani,

Jati,

Triwuri

2023

j.rekayasa.mesin.

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Penelitian sebelumnya telah diketahui bahwa ekstrak limbah kulit buah nipah (Nypa Fruticans Wurmb) memiliki potensi sebagai penghambat laju korosi pada logam. Oleh karena itu, penelitian ini dilakukan untuk mengetahui persentase berat ekstrak yang optimal sebagai green corrosion inhibitor dalam menghambat laju korosi pada baja karbon ASTM A36 melalui metode weight loss dan uji polarisasi potensiodinamik. Daya hambat korosi baja karbon ASTM A36 menggunakan ekstrak kulit buah nipah ditentukan pada berbagai persen berat ekstrak pada inhibitor terhadap variasi suhu dan lama paparan dengan media korosifnya. Efisiensi inhibisi meningkat dengan meningkatnya persen berat ekstraknya. Efisiensi inhibisi tertinggi berdasarkan uji weight loss sebesar 97,87% dengan laju korosi 0,00002 mpy yang diperoleh pada persentase ekstrak 15% dengan lama paparan 4 hari. Sedangkan, berdasarkan uji polarisasi potensiodinamik diperoleh laju korosi terendah terdapat pada sampel dengan persentase ekstrak 12%b/v inhibitor sebesar 1,6747 mmpy dengan efisiensi inhibisi sebesar 76,13% pada suhu 30oC. Berdasarkan hasil uji dapat pula disimpulkan bahwa semakin tinggi suhu paparan maka akan semakin meningkatkan laju korosi. Sedangkan, lama waktu paparan tidak selalu meningkatkan laju korosi pada sampel dengan inhibitor. Hal ini dimungkinkan dipengaruhi oleh efek jenuh dari adsorpsi inhibitor terhadap logam itu sendiri. Sedangkan pada sampel tanpa inhibitor selalu menunjukkan peningkatan laju korosi seiring dengan bertambahnya lama waktu paparan

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Pengaruh Penambahan Ekstrak Kulit Buah Nipah sebagai Green Corrosion Inhibitor terhadap Laju Korosi pada Baja Karbon ST37

Cited by 2 publications

References 7 publications

A MIXTURE OF ACACIA BARK EXTRACT (Acacia mangium Willd) AND POTASSIUM IODIDE AS A CORROSION INHIBITOR IN SULFURIC ACID SOLUTION

A MIXTURE OF ACACIA BARK EXTRACT (Acacia mangium Willd) AND POTASSIUM IODIDE AS A CORROSION INHIBITOR IN SULFURIC ACID SOLUTION

Optimalisasi Persentase Berat Ekstrak Kulit Buah Nipah sebagai Green Corrosion Inhibitor dengan Variasi Suhu dan Lama Paparan

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