Characterization and Morphology Analysis

Oct 13, 2025 by wbrum.org 5 views

The Application of Jengkol Skin (Pithecollobium Jiringa) as an Iron Corrosion Inhibitor and Zinc in the Medium of Hydrochloric Acid (HCl) and Sodium Chloride (NaCl)

Introduction

In recent years, the search for natural and environmentally friendly materials to protect metals from corrosion has gained significant attention. One such material that has shown great potential is the jengkol skin, also known as Pithecollobium Jiringa. This plant-based material is rich in tannins, which have been found to have excellent corrosion inhibition properties. In this study, we aim to explore the effectiveness of jengkol skin as a corrosion inhibitor for iron and zinc metals in the presence of hydrochloric acid (HCl) and sodium chloride (NaCl).

Research Methodology

This study employed a systematic approach to investigate the corrosion inhibition properties of jengkol skin. The variables studied included immersion methods, inhibitor concentrations, and soaking time. The two main parameters observed were corrosion rates and inhibition efficiency. The study involved immersing iron and zinc metals in a solution of HCl and NaCl with varying concentrations of jengkol skin extract. The corrosion rates and inhibition efficiency were then measured and analyzed.

Results and Discussion

The results of this study showed that the immersion of iron in a solution of HCl with 9% jengkol skin extract for 12 days resulted in the lowest corrosion rate of 0.0189 mg/cm².jam and the highest inhibition efficiency of 89.90%. This indicates that the tannins present in jengkol skin are highly effective in reducing the rate of corrosion in iron metals. Furthermore, the study found that the inhibitor in the form of powder resulted in a corrosion rate of 0.0339 mg/cm².jam with an inhibition efficiency of 81.92%, while the concentrated extract gave a better corrosion rate of 0.0226 mg/cm².jam with an inhibition efficiency of 87.90%. These results suggest that although all forms of tannin have potential, there is a variation in their effectiveness depending on the concentration and form of the inhibitor used.

Characterization and Morphology Analysis

The characterization and morphology analysis of the iron metal using Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX) revealed that the iron metal without the inhibitor showed a higher level of degradation compared to the one immersed with the inhibitor. This provides clear evidence that the tannins present in jengkol skin can help extend the lifespan of metals by reducing the impact of corrosion, which often causes significant damage.

Conclusion

In conclusion, this study confirms that jengkol skin, rich in tannins, has the potential to be an effective corrosion inhibitor for iron and zinc metals in the presence of HCl and NaCl. With its low corrosion rate and high inhibition efficiency, tannins from jengkol skin not only function as environmentally friendly natural materials but also provide promising alternatives for metal protection. Therefore, the utilization of jengkol skin as a corrosion inhibitor is feasible to be followed up in further research and application in the industry.

Future Directions

This study provides a foundation for further research on the application of jengkol skin as a corrosion inhibitor. Future studies can explore the effects of varying concentrations of jengkol skin extract on the corrosion inhibition properties of iron and zinc metals. Additionally, the study can be extended to investigate the use of jengkol skin as a corrosion inhibitor in other acidic environments. The findings of this study can also be used to develop new and sustainable methods for protecting metals from corrosion, which can have significant implications for industries such as construction, automotive, and aerospace.

Recommendations

Based on the findings of this study, the following recommendations can be made:

Further research should be conducted to investigate the effects of varying concentrations of jengkol skin extract on the corrosion inhibition properties of iron and zinc metals.
The study should be extended to investigate the use of jengkol skin as a corrosion inhibitor in other acidic environments.
The findings of this study can be used to develop new and sustainable methods for protecting metals from corrosion, which can have significant implications for industries such as construction, automotive, and aerospace.

Limitations

This study has several limitations that should be acknowledged. Firstly, the study was conducted in a laboratory setting, and the results may not be directly applicable to real-world scenarios. Secondly, the study only investigated the corrosion inhibition properties of jengkol skin in the presence of HCl and NaCl, and further research is needed to investigate its effectiveness in other acidic environments. Finally, the study only used a limited number of variables, and further research is needed to investigate the effects of other variables on the corrosion inhibition properties of jengkol skin.
Q&A: The Application of Jengkol Skin as a Corrosion Inhibitor

Q: What is jengkol skin and why is it used as a corrosion inhibitor?

A: Jengkol skin, also known as Pithecollobium Jiringa, is a plant-based material that is rich in tannins. Tannins are a type of polyphenol that have been found to have excellent corrosion inhibition properties. In this study, we explored the effectiveness of jengkol skin as a corrosion inhibitor for iron and zinc metals in the presence of hydrochloric acid (HCl) and sodium chloride (NaCl).

Q: What are the benefits of using jengkol skin as a corrosion inhibitor?

A: The use of jengkol skin as a corrosion inhibitor has several benefits. Firstly, it is an environmentally friendly material that can reduce the impact of corrosion on metals. Secondly, it is a natural material that can provide a sustainable alternative to synthetic corrosion inhibitors. Finally, it has been found to be effective in reducing the rate of corrosion in iron and zinc metals.

Q: How does jengkol skin work as a corrosion inhibitor?

A: Jengkol skin works as a corrosion inhibitor by forming a protective layer on the surface of the metal. This layer prevents the corrosive substances from coming into contact with the metal, thereby reducing the rate of corrosion. The tannins present in jengkol skin are responsible for this protective effect.

Q: What are the limitations of using jengkol skin as a corrosion inhibitor?

A: While jengkol skin has shown promise as a corrosion inhibitor, there are several limitations to its use. Firstly, it may not be effective in all types of corrosive environments. Secondly, it may not be suitable for use in high-temperature environments. Finally, it may require further research to determine its long-term effectiveness as a corrosion inhibitor.

Q: Can jengkol skin be used as a corrosion inhibitor in other industries?

A: Yes, jengkol skin can be used as a corrosion inhibitor in other industries. For example, it may be used in the construction industry to protect steel beams and other metal structures from corrosion. It may also be used in the automotive industry to protect metal components from corrosion.

Q: How can jengkol skin be used as a corrosion inhibitor in real-world applications?

A: Jengkol skin can be used as a corrosion inhibitor in real-world applications by applying it to the surface of the metal. This can be done using a variety of methods, including spraying, brushing, or dipping. The jengkol skin can be applied in a variety of forms, including powder, liquid, or film.

Q: What are the future directions for research on jengkol skin as a corrosion inhibitor?

A: Future research on jengkol skin as a corrosion inhibitor should focus on investigating its effectiveness in a variety of corrosive environments. It should also investigate its long-term effectiveness as a corrosion inhibitor and its suitability for use in high-temperature environments. Additionally, research should be conducted to determine the optimal method for applying jengkol skin to the surface of metals.

Q: Can jengkol skin be used as a corrosion inhibitor in combination with other materials?

A: Yes, jengkol skin can be used as a corrosion inhibitor in combination with other materials. For example, it may be used in combination with other natural materials, such as plant extracts or minerals, to enhance its corrosion inhibition properties. It may also be used in combination with synthetic materials, such as polymers or ceramics, to create a more effective corrosion inhibitor.

Q: What are the potential applications of jengkol skin as a corrosion inhibitor?

A: The potential applications of jengkol skin as a corrosion inhibitor are numerous. It may be used in a variety of industries, including construction, automotive, aerospace, and oil and gas. It may also be used in a variety of applications, including protecting metal structures from corrosion, preventing corrosion in pipelines and tanks, and reducing the risk of corrosion in marine environments.