{"title":"皮革磨光粉作为软钢在 H2SO4 酸中的缓蚀剂的价值评估","authors":"","doi":"10.1016/j.biteb.2024.101918","DOIUrl":null,"url":null,"abstract":"<div><p>This work discusses the valorisation and efficacy of the acid-extracted collagenous proteins from leather buffing dust (LBD) on the corrosion inhibition of mild steel (MS) in 0.5 M H<sub>2</sub>SO<sub>4</sub> solution using electrochemical analysis. The extract shows ~95 % inhibition efficiency at 1 wt% of raw LBD loading. The inhibitor interaction follows Langmuir adsorption isotherm, indicating monolayer adsorption through physisorption, leading to complex formation on the MS surface. Post-corrosion characterizations reveal film-forming nature of the inhibitor and the involvement of organic compounds in the complex protective layer formation on the MS in the corrosive media. In addition, surface study through an optical profilometer helps to understand the nature of the corroded MS. In summary, the LBD-H<sub>2</sub>SO<sub>4</sub> extract is extremely capable in mitigating the corrosion of MS in H<sub>2</sub>SO<sub>4</sub> solution, and the inhibition phenomenon is governed by a complex passive layer formation on the MS subjected to the corrosive media.</p></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Valorisation of leather buffing dust as corrosion inhibitor for mild steel in H2SO4 acid\",\"authors\":\"\",\"doi\":\"10.1016/j.biteb.2024.101918\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This work discusses the valorisation and efficacy of the acid-extracted collagenous proteins from leather buffing dust (LBD) on the corrosion inhibition of mild steel (MS) in 0.5 M H<sub>2</sub>SO<sub>4</sub> solution using electrochemical analysis. The extract shows ~95 % inhibition efficiency at 1 wt% of raw LBD loading. The inhibitor interaction follows Langmuir adsorption isotherm, indicating monolayer adsorption through physisorption, leading to complex formation on the MS surface. Post-corrosion characterizations reveal film-forming nature of the inhibitor and the involvement of organic compounds in the complex protective layer formation on the MS in the corrosive media. In addition, surface study through an optical profilometer helps to understand the nature of the corroded MS. In summary, the LBD-H<sub>2</sub>SO<sub>4</sub> extract is extremely capable in mitigating the corrosion of MS in H<sub>2</sub>SO<sub>4</sub> solution, and the inhibition phenomenon is governed by a complex passive layer formation on the MS subjected to the corrosive media.</p></div>\",\"PeriodicalId\":8947,\"journal\":{\"name\":\"Bioresource Technology Reports\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-07-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bioresource Technology Reports\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2589014X24001592\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Environmental Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589014X24001592","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 0
摘要
本研究采用电化学分析方法,讨论了从皮革磨光粉(LBD)中酸性提取的胶原蛋白的价值及其在 0.5 M H2SO4 溶液中对低碳钢(MS)的缓蚀作用。当枸杞多糖原料含量为 1 wt% 时,提取物的抑制效率约为 95%。抑制剂的相互作用遵循 Langmuir 吸附等温线,表明通过物理吸附实现单层吸附,从而在 MS 表面形成络合物。腐蚀后表征揭示了抑制剂的成膜性质,以及有机化合物参与了腐蚀介质中 MS 上复合保护层的形成。此外,通过光学轮廓仪进行的表面研究有助于了解被腐蚀的 MS 的性质。总之,枸杞多糖-H2SO4 提取物在减轻 H2SO4 溶液对 MS 的腐蚀方面具有极强的能力,其抑制现象是受腐蚀介质影响的 MS 上复杂的被动层形成所决定的。
Valorisation of leather buffing dust as corrosion inhibitor for mild steel in H2SO4 acid
This work discusses the valorisation and efficacy of the acid-extracted collagenous proteins from leather buffing dust (LBD) on the corrosion inhibition of mild steel (MS) in 0.5 M H2SO4 solution using electrochemical analysis. The extract shows ~95 % inhibition efficiency at 1 wt% of raw LBD loading. The inhibitor interaction follows Langmuir adsorption isotherm, indicating monolayer adsorption through physisorption, leading to complex formation on the MS surface. Post-corrosion characterizations reveal film-forming nature of the inhibitor and the involvement of organic compounds in the complex protective layer formation on the MS in the corrosive media. In addition, surface study through an optical profilometer helps to understand the nature of the corroded MS. In summary, the LBD-H2SO4 extract is extremely capable in mitigating the corrosion of MS in H2SO4 solution, and the inhibition phenomenon is governed by a complex passive layer formation on the MS subjected to the corrosive media.