Locust Bean Gum: A Natural Polysaccharide as an Eco-Friendly Corrosion Inhibitor for N80 Carbon Steel in CO₂-Saturated Saline Solution, Useful for the Oil and Gas Industry.

ABSTRACT: This study evaluated locust bean gum (LBG), a polysaccharide thickening agent, as an anti-corrosion active compound against sweet corrosion for N80 carbon steel used in the oil and gas sector. The assessment involved weight loss and electrochemical measurements at different temperatures (e.g., 25 °C and 80 °C) and immersion durations (up to 168 h) in a CO₂-saturated 2 wt.% KCl solution. The electrochemical results showed that LBG effectively inhibited sweet corrosion at both temperatures, and its efficacy increased with its concentration, reaching maximum inhibition efficiency of 84.11% at 25 °C and 55.81% at 80 °C, using 0.3 g L^-1 of LBG after 24 h of immersion. At 25 °C, and with 0.3 g L^-1 of LBG, the inhibition action of LBG did not change, even after 16

SUBMITTER: Palumbo G 

PROVIDER: S-EPMC12693648 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature