ANALISIS EFEKTIVITAS INHIBITOR ORGANIK EKSTRAK DAUN JAMBU BIJI (Psidium Guajava, Linn) TERHADAP LAJU KOROSI PADA BOILER HEADER TUBES

Analysis of the Effectiveness of Organic Inhibitor from Guava Leaf Extract (Psidium Guajava, Linn) on Corrosion Rate in Boiler Header Tubes 

Pembangkit Listrik Tenaga Uap (PLTU) menggunakan uap air sebagai media kerja, dan boiler merupakan salah satu komponen utama PLTU yang terbuat dari material logam. Permasalahan yang ditemui adalah pembentukan endapan dan korosi pada pipa akibat zat korosif dalam air umpan, yang dapat mengurangi efisiensi dan umur boiler.

Penelitian ini merupakan eksperimen yang membuat sampel boiler header tubes dari potongan pipa dan inhibitor korosi dari ekstrak daun jambu biji (Psidium guajava, linn) dengan metode maserasi. Uji korosi dilakukan dengan metode weight loss, dan data dianalisis menggunakan ANOVA one way dan uji-t.

Hasil penelitian menunjukkan terdapat pengaruh signifikan variasi konsentrasi dan waktu perendaman pada spesimen pipa boiler terhadap laju korosi dan efisiensi ekstrak daun jambu biji (Psidium guajava, linn). Laju korosi tertinggi terjadi pada spesimen tanpa inhibitor (0ppm) setelah 3 hari perendaman sebesar 0,2433 mmpy, sementara laju korosi terendah tercatat pada konsentrasi inhibitor 1500ppm setelah 7 hari perendaman sebesar 0,0126 mmpy. Persentase efisiensi terbesar didapat yaitu 83,4% pada konsentrasi 1500ppm.

Kata Kunci: Ekstrak Daun Jambu Biji (Psidium Guajava, Linn), Inhibitor, Korosi, Pipa Boiler, Weight Loss

The Steam Power Plant uses steam as the working medium, and the boiler is one of the main components of the Power Plant made from metal materials. A common problem encountered is the formation of deposits and corrosion on the pipes due to corrosive substances in the feedwater, which can reduce the efficiency and lifespan of the boiler.

This study is an experiment that creates boiler header tube samples from pipe segments and corrosion inhibitors from guava leaf extract (Psidium guajava, Linn) using the maceration method. Corrosion testing was conducted using the weight loss method, and the data were analyzed using one-way ANOVA and t-test.

The results showed a significant effect of variations in concentration and immersion time on the corrosion rate and efficiency of guava leaf extract (Psidium guajava, Linn) on boiler pipe specimens. The highest corrosion rate occurred in specimens without inhibitor (0ppm) after 3 days of immersion at 0.2433 mmpy, while the lowest corrosion rate was observed at a 1500ppm inhibitor concentration after 7 days of immersion at 0.0126 mmpy. The highest efficiency percentage was 83.4% at a 1500ppm concentration.

Keywords: Boiler Pipe, Corrosion, Guava Leaf (Psidium Guajava, Linn) Extract , Inhibitor, Weight Loss