Natural Polymers as Green Corrosion Inhibitors in Carbon Steels for Applications in Acid Environment

Orozco-Agamez J.; Alviz-Meza A.; Kafarov V.; Colpas F.; Jimenez M.; Peña-Ballesteros D. · Chemical Engineering Transactions (2023) · DOI: 10.3303/cet23100019

Resumen

Corrosion represents one of the major problems in using materials. As a result, finding ways to control it has become a permanent and complex task for industries, using toxic and dangerous techniques, producing great and serious problems for humanity. Natural polymers have emerged as one of the most promising alternatives for accurately and adequately mitigating corrosion through the use of biodegradable, non-toxic, inexpensive and effective materials. A series of studies on the inhibition efficiency of gums and lignins as natural corrosion inhibitors was compiled and analyzed in this study, focusing on avoiding the environmental impact of traditional corrosion inhibitors in carbon steels for acidic applications. Within the results, inhibition efficiencies were identified in gums from 74% to 97% and lignins from 79.9% to 92%, showing that, in general, the efficiency increases with a higher concentration of the inhibitor, however, when the temperature increases, tends to decrease the efficiency of physical adsorption, unlike chemical adsorption that tends to increase. Copyright

Instituciones: Universidad Señor de Sipán