Corrosion Inhibition and Adsorption Potential of Biomass Extracts Leaves and Flowers of Heliconia rostrata and Canna indica on corrosion of Mild steel Aluminium 1100 in 1 M HCl

Abstract

Metals find multifarious applications in industrial facilities such as acid pickling, industrial newlinecleaning and petrochemical processes to name a few. They are essential part of our present newlinecivilization and these metallic materials corrode in a variety of gaseous and aqueous environments. newlineThe corrosion of metallic materials in acidic solution causes considerable costs. Mild steel and newlinealuminum find widespread industrial and structural applications due to their low cost, easy newlineavailability, stability, and low density, high thermal and electrical conductivity. newlineAcid solutions are widely used in industrial acid pickling, industrial acid cleaning and oilwell newlineacidizing. The aggressive nature of these acids causes severe corrosion in the metal specimen newlinecausing serious corrosion problems. Comparing to other mineral acids such as sulphuric acid, nitric newlineacid and phosphoric acid, use of hydrochloric acid in industrial processes is more economical, newlineefficient and trouble free. Therefore it is of immense importance to protect metals from corrosion newlinecaused by hydrochloric acid. There are various methods used for the protection of metals against newlinecorrosion. newlineOne of the methods for combating corrosion is the use of corrosion inhibitors. A very large newlinenumber of inhibitors are reported in the literature for different corroding systems. Most of the newlineeffective corrosion inhibitors are synthetic chemicals with high cost. Such synthetic compounds are newlinenot only expensive but also toxic to humans and environment. For the safety of the global newlineenvironment, efforts have been geared towards finding naturally occurring eco-friendly organic newlinesubstances as suitable replacement of synthetic corrosion inhibitors. Many of these naturally newlineoccurring substances have proved their ability to act as corrosion inhibitors for the corrosion of newlinedifferent metals and alloys in different aggressive media and they are safe and can be extracted by newlinesimple and cheap procedures. Plants are great chemical factories that can supply us with the newlinechemicals required to inhibit the co