Effect of a New Organic Inhibitor for Carbon Steel in Salt Solution

Abstract

Carbon steel, the most widely used engineering material, despite its relatively limited corrosion resistance used in large tonnages in marine applications, nuclear power transportation, chemical processing , petroleum production and refining, pipelines, mining, construction and metal-processing equipment. The main objective of the present work involved the study of the inhibitive properties of natural product as spearmint plant extract as a safety and an environmentally friendly corrosion inhibitor for low carbon steel in (3.5% NaCl) solution. Results showed when the immersion model in (3.5% NaCl) solution that contains the inhibitor with concentration of (15% in volume), it's getting decrease in lost weight , indicating a layer of adequate oxide on the surface of steel, indicating that the amount of loss weight decrease with increasing concentration of inhibitor and this shows the damper on his ability to form a protective layer .

Biosorption of amaranth red in aqueous solution onto treated and untreated lignocellulosic materials (pineapple peelings and coconut shells)

“…The concentration of the hydrogen ions H + affects the ionization level of the amaranth red and the surface properties of the biosorbents. This is in agreement with the results of Al-Sultani et al2012 [8] and Nanganoa et al 2014 [6] on the adsorption of phenol and amaranth red respectively. However, the more pH increases, the more OH -free which are able to compete with the anionic species of amaranth red active sites.…”

“…The spectra obtained are shown below. [8,12] Figures 2 and 3 shows that, all the spectra have the same peaks. This is proof that both biosorbents have identical functional groups on their surfaces.…”

“…The activated carbon, often proves to be less accessible to all the researchers, one is then directed to the use of materials coming from the biomass which is largely available for the elimination of the pollutants in solution by the process of biosorption [9]. Several works already carried out with these materials showed that they are characterized by various chemical functions on their surfaces, of appreciable specific surfaces and have good adsorbent properties [3,8,10]. Thus Guerrero-Coronilla et al 2014 [7] used materials of maritime origin, Adii et al 2013 [10] used the grenade peeling and Al-Sultani et al2012 [8] used rice husks for the elimination of the amaranth red and phenol respectively.…”

“…Several works already carried out with these materials showed that they are characterized by various chemical functions on their surfaces, of appreciable specific surfaces and have good adsorbent properties [3,8,10]. Thus Guerrero-Coronilla et al 2014 [7] used materials of maritime origin, Adii et al 2013 [10] used the grenade peeling and Al-Sultani et al2012 [8] used rice husks for the elimination of the amaranth red and phenol respectively. In this study, pineapple peelings and coconut shells untreated and treated with phosphoric acid were used for the biosorption of amaranth red from water.…”

“…It became a major call for concern for most researchers, the environmental agency of the industrialized and developing countries. Wastewater treatment methods such as: flocculation, advanced oxidation processes (AOP), ion exchange, electrolysis, membrane processes, coagulation, photocatalytic processes, biological treatments and adsorption [6,8] have been employed. The majority of these techniques are very expensive and difficult to implement especially when they are applied to effluents of high flow or having weak concentrations of pollutants.…”