AI Insight
This study investigates the use of expired fexofenadine hydrochloride, a common antihistamine drug, as a corrosion inhibitor for copper in simulated multi-stage flash (MSF) desalination environments. The researchers found that the expired pharmaceutical compound demonstrated high inhibition efficiency for copper corrosion, likely through adsorption of the drug molecules onto the copper surface, forming a protective barrier. The study characterizes the inhibition mechanism using electrochemical techniques and surface analysis, establishing a relationship between concentration, temperature, and inhibitor performance.
Why it matters
Repurposing expired pharmaceutical waste as industrial corrosion inhibitors addresses two simultaneous challenges, namely pharmaceutical waste disposal and the degradation of copper components in desalination infrastructure, potentially reducing maintenance costs and environmental burden in water production facilities.