Year-end Sale % OFF 
Abstract
The analysis of the effectiveness and efficiency of Vernomia amydalina (VA) solution as an inhibitor on offshore pipeline and Ship materials (Steel) was carried out with the preparation of the specimen and the VA solution. The specimens were kept in a workable state and the VA Solution (inhibitor) prepared from 1200 g of bitter leaf was plucked, weighed and crushed separately. 600 cl of water was added to each of the crushed leaves. The mixture was put in a filter cloth and squeezed with hand to filter out the active concentration ingredients responsible for corrosion inhibition, which produced a 2 M concentration of VA extract solution. After the experiment was carried out the specimen was air-dried and weighed to determine the corrosion rate and weight loss. This was followed by the determination of the inhibitor efficiency at the different hours and at different percentage/concentration of the VA solution on the specimen. Results were obtained for different hours and at different percentage (0%, 5%, 10%, 15%, 20% and 25% inhibitor)/concentration of the VA solution and graphs plotted. It was observed that at the first week of exposure to corrosive medium there was a substantial reduction in weight of coupons but over the next three weeks there was a gradual decline in weight loss and the corrosion rate reduced evenly. It can be said that the percentage of inhibitor to corrosive medium is insufficient. From the graphs plotted, the inhibitor efficiency is considered high when the concentration of the VA solution is high, which implies a right percentage of inhibitor needs to be administered to obtain good efficiency of the solution. Hence as the weeks go by it was clear that the inhibitor was gradually losing its effectiveness. This means that inhibitors need to be added at regular intervals to sustain the effectiveness of the inhibitor. It is also of vital interest to apply the right concentration of inhibitor since CR increases at high concentrations and temperature. This process did not take into consideration moving water.
Highlights
Corrosion is defined as the deterioration and gradual destruction of the component of a material as a result of the chemical or electrochemical reactions of this material and its environment [1]
WL determination has a number of attractive features that account for its sustained popularity, some of the advantages are as follow; it is simple because no sophisticated instrumentation is required to obtain a result, it is direct because a direct measurement is obtained, with no theoretical assumption or approximations, it is versatile because it is applicable to all corrosive environments, and gives information on all forms of corrosion and it is visual because inspection can be undertaken
It was observed that the introduction of the Vernomia amydalina (VA) solution reduced the weight loss to less than 0.1 at different concentration level while without the VA solution it was more than 0.3 g of the material
Summary
Corrosion is defined as the deterioration and gradual destruction of the component of a material as a result of the chemical or electrochemical reactions of this material and its environment [1]. For the purpose of the research, the focus is to analyze the effectiveness and efficiency of the VA solution as a corrosion inhibitor on offshore pipeline and ship materials, especially mild steel submerged in seawater of high salinity These materials tend to corrode when exposed in aqueous environments which are either water or moist environment. Most corrosion problems encountered fall into five basic categories: uniform or general corrosion, localized corrosion, metallurgical induced corrosion, mechanically assisted corrosion and stress corrosion cracking [3] These five basic categories of corrosion can be broken down into eight visually identifiable forms. It is noteworthy that three conditions must exist for galvanic corrosion to occur These include; electrochemically disparate metals must be present; the metals must be in electrical contact; and the metals must be open to an electrolyte
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
