LEMON (CITRUS LIMONUM RISSO) AND STARFRUIT (AVERRHOA CARAMBOLA) EXTRACT AS RUST REMOVER GEL

Abstract

Rust is a common form of metal corrosion that occurs when steel is exposed to oxygen and moisture. This study aimed to determine the effectiveness of lemon (Citrus limonum Risso) and starfruit (Averrhoa carambola) extracts as a rust remover gel. An experimental research method was employed to determine whether lemon and starfruit extracts inhibit corrosion in steel metals. The study involved testing different formulations to evaluate rust removal effectiveness. Statistical analysis was used to support the experimental design and validate the findings. The results revealed that higher concentrations of lemon and starfruit extracts, combined with longer exposure time on rusted metal, were more effective in rust removal compared to shorter exposure durations. Testing and observation of various concentrations showed that higher concentrations resulted in stronger rust-removing capability. Among all formulations, Formulation A exhibited the strongest concentration and was proven to be the most effective. The findings indicate that lemon and starfruit extracts show strong potential as botanical substitutes for rust removal based on the experimental results. Furthermore, enhancing and refining the components of the rust remover gel may further improve its rust-removing effectiveness.