Implementasi Daun Psidium Guajava Dalam Proses Inhibisi Di Media Asam

Geovano, Doni Kristiawan (2021) Implementasi Daun Psidium Guajava Dalam Proses Inhibisi Di Media Asam. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemanfaatan inhibitor organik menjadi solusi baru guna memproteksi korosi karena biaya murah, bersifat biodegradable, dan ramah lingkungan. Inhibitor organik yang digunakan adalah ekstrak daun jambu biji dengan konsentrasi 0, 785, 1188, dan 1570 ppm. Metode ekstraksi yang digunakan adalah metode maserasi, dari hasil ekstraksi tersebut dilakukan GCMS. Hasil pengujian GCMS menunjukkan bahwa ekstrak daun jambu biji mengandung senyawa Globulol dengan persen area 5.78 dan Citronella dengan persen area 4.05. Senyawa tersebut merupakan heteroatom dan fenolik yang dapat membentuk lapisan pelindung pada permukaan logam.
Berdasarkan penelitian yang telah dilakukan, adanya penambahan ektrak ini mampu menjadikan laju korosi menjadi 0.0016 mm/year pada konsentrasi 785 ppm. Laju korosi tersebut didapat pada temperatur 30℃ dengan menggunakan media HCL 1M. Pada penambahan konsentrasi yang sama efisiensi inhibisi menunjukkan angka 96.96% pada pengujian Impedensi. Dari pengujian yang dilakukan (Polarisasi Potensiodinamik dan Impedensi) menunjukkan bahwa ekstrak daun jambu biji mampu menjadi salah satu alternatif inhibitor organik. Hal ini juga ditunjukkan dari hasil SEM yang telah dilakukan yaitu terbentuknya lapisan pelindung pada permukaan logam.
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The use of organic inhibitors is a new solution to protect
corrosion because it is cheap, biodegradable, and environmentally
friendly. The organic inhibitor used was guava leaf extract with
concentrations of 0, 785, 1188, and 1570 ppm. The extraction
method used is the maceration method, from the extraction results
GCMS is carried out. The results of the GCMS test showed that
guava leaf extract contained Globulol compounds with a percent
area of 5.78 and Citronella with a percent area of 4.05. These
compounds are heteroatoms and phenolics that can form a
protective layer on metal surfaces.
Based on the research that has been done, the addition of this
extract is able to make the corrosion rate to 0.0016 mm/year at a
concentration of 785 ppm. The corrosion rate was obtained at a
temperature of 30℃ using 1M HCL media. At the addition of the
same concentration, the inhibition efficiency showed 96.96% in the
impedance test. From the tests carried out (Potiodynamic
Polarization and Impedance) showed that guava leaf extract was
able to be an alternative organic inhibitor. This is also shown from
the SEM results that have been carried out, namely the formation
of a protective layer on the metal surface.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	organic inhibitor, guava leaf extract, efficiency, corrosion
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 Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Doni Kristiawan Geovano
Date Deposited:	10 Aug 2021 04:26
Last Modified:	10 Aug 2021 04:26
URI:	http://repository.its.ac.id/id/eprint/85353

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