Application of Biodegradable Mustard Waste Extract as Corrosion Inhibitor for Oil Pipeline

Abstract Growing environmental concerns over the use of synthetic corrosion inhibitors in industrial applications have driven the search for sustainable and biodegradable alternatives. This study focuses on the development of a biodegradable corrosion inhibitor derived from Brassica juncea fruit or mustard seed extract (MSE). Rich in bioactive compounds such as glucosinolates, flavonoids, and phenolic acids, MSE serves as a green and cost-effective alternative to conventional inhibitors. The corrosion inhibition mechanism involves the adsorption of MSE molecules onto the metal surface, forming a protective barrier that prevents corrosive agents from attacking the metal while also chelating metal ions, thereby reducing their availability for corrosion. The extract was obtained through a simple aqueous extraction process and characterized using phytochemical analysis, confirming the presence of key corrosion-inhibiting compounds. Results indicate that Brassica juncea fruit waste extract effectively inhibits corrosion and scale formation, with efficiency improving as concentration increases. The biodegradability assessment further confirmed that MSE naturally decomposes over time, reinforcing its environmental sustainability. At 70°C, the addition of just 300 ppm of MSE reduced corrosion by 90%, a performance comparable to commercially available corrosion inhibitors. This research underscores the potential of Brassica juncea fruit extract as an eco-friendly, biodegradable corrosion and scale inhibitor, offering a sustainable solution for industrial applications while ensuring material protection and environmental safety.