Punica granatum peel powder and extract as green inhibitor for TMT in 1M HCl: an experimental and response surface model
| Autor: | K. Krishnanjana, G. Mohan Ganesh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Green Chemistry Letters and Reviews, Vol 17, Iss 1 (2024) |
| Druh dokumentu: | article |
| ISSN: | 17518253 1751-7192 1751-8253 |
| DOI: | 10.1080/17518253.2024.2412989 |
| Popis: | The construction industry widely uses TMT bars. However, its corrosion is a major challenge for civil engineers. Green corrosion inhibitors in place of inorganic inhibitors are one of the effective ways to prevent the corrosion which results sustainable solution. Researchers have not explored the corrosion mitigation of TMT bars with Punica granatum. Its peel (agro-waste) as a green inhibitor for TMT bars in powder/extract form exposed to 1M HCl was investigated through gravimetric and electrochemical studies using TMT bars of 8 mm diameter, 30mm, and 5 mm length respectively. The experimental work used five different concentrations of peel powder, ranging from 3.5 g to 17.5 g, and peel extract from 15 ml to 75 ml. The corrosion analysis yielded a maximum inhibition efficiency of 86.64% for powder and 83.32% for extract. Qualitative screening identified the presence of phytochemicals. The UV-Vis and FTIR spectra before and after corrosion define the chemisorption process, confirming the formation of protective layers on the bars. Steel admixed with inhibitor showed a smooth surface with fewer cracks/pits after corrosion through AFM and FE-SEM. The weight loss results were modeled using the response surface method and obtained R2 as 0.9016 (powder) and 0.9001 (extract). |
| Databáze: | Directory of Open Access Journals |
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