Green corrosion inhibitors for water systems

Green corrosion inhibitors will extend the life of industrial equipment for water systems. Special green inhibitors are obtained from plants growing in desert regions of the State of Baja California, Mexico, by ethanolic and aqueous extraction. Corrosion inhibitors slow the rate of corrosion reactions when added in relatively small amounts to the water. They are divided into three groups, anodic inhibitors, which retard the anodic corrosion reactions by forming passive films, cathodic inhibitors, which repress the corrosion reaction such as reducing DO, and adsorption inhibitors, such as amines, oils, and waxes, which are adsorbed on the steel surface to form a thin protective film that prevents metal dissolution. Green inhibitors belong to the advanced field of green chemistry, also known as sustainable chemistry, which involves the design of chemical products and processes that reduce or eliminate the use or generation of hazardous substances.