POTENSI EKSTRAK KUNYIT SEBAGAI INHIBITOR KOROSI RAMAH LINGKUNGAN UNTUK BAJA KARBON RENDAH
https://doi.org/10.55114/siparstika.v5i1.1120
Abstract
Tulisan ini meninjau potensi ekstrak kunyit (Curcuma longa) sebagai inhibitor korosi ramah lingkungan pada baja karbon rendah. Ringkasan penelitian terdahulu menunjukkan bahwa ekstrak kunyit—melalui kurkuminoid dengan gugus fenolik dan β‑diketon—mampu menurunkan laju korosi pada media asam maupun klorida, dengan efisiensi inhibisi puncak hingga ~88,9% di HCl 0,5 M dan ~86% di NaCl 3,5% pada dosis optimum. Mekanisme dominan adalah adsorpsi yang membentuk film protektif dan umumnya sesuai dengan isoterm Langmuir; sifat inhibitor cenderung bertipe campuran. Naskah ini mengompilasi konsentrasi efektif, ketergantungan suhu, dan parameter elektrokimia (Rct, Cdl) sekaligus menyoroti aspek keberlanjutan serta prospek aplikasi lapangan.
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Copyright (c) 2026 Muhammad hardiman Nur Ramadhan
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