Aqueous Extracts of Curcuma and Ginger as Green Corrosion Inhibitors on Carbon Steel in Hydrochloric Solution

Aqueous Extracts of Curcuma and Ginger as Green Corrosion Inhibitors on Carbon Steel in Hydrochloric Solution | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Aqueous Extracts of Curcuma and Ginger as Green Corrosion Inhibitors on Carbon Steel in Hydrochloric Solution Abla Hamada, Oulmi Kafia, Laid Saouli This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6178211/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract This research studied the corrosion performance of green corrosion inhibitors (curcuma and ginger) for carbon steel in 1.5M HCl medium. Their inhibition properties was evaluated by several methods, gravimetric and electrochemical tests was employed to determine the inhibition efficiency, corrosion rate and the type of inhibition. The experimentl results show that the inhibition effeciency depends on the change of concentration, at an optimum concentration of 800mg/l, ginger inhibitor reduced corrosion rate to 0.000814 g/cm 2 .h, with a 73.46% inhibition efficiency. Curcuma extract at an optimum concentration of 1000mg/l reduced corrosion rate to 0.000331 g/cm 2 .h with an inhibitory effeciency of 89.20%, forming a protective hydrophobic film on the metal surface, wich maximally blocked the cathodic corrosive process. Corrosion rate reaches 0.003068 g/cm 2 .h without inhibitor. The OCP plot indicates that the potential evolution for the inhibitor free experiment is characterized by a decrease in potential almost − 0.195 V at 200 s,followed by an increase in potential to -0.165 V. These potential changes indicate metal attack followed by anoblissement. In the presence of a ginger inhibitor, the potential increases until it reaches − 0.130 V at 400 s, indicating that the material is accumulating. In the presence of a curcuma inhibitor, the potential decreases until it reaches − 0.191 V, indicating that the metal is being attacked continuously. In addition, the obtained adsorption free energy of-21.024 kJ/mol for curcuma extract and − 19.995 kJ/mol for ginger extract, indicates that the extracts interaction with the metal surface was a physical adsorption, and the adsorption behaviour of extracts was obeyed by Langmuir isotherm . Adsorption Carbon steel Corrosion protection Extracts Green inhibitors Inhibition efficiency Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 20 Mar, 2025 Reviewers invited by journal 18 Mar, 2025 Editor invited by journal 15 Mar, 2025 Editor assigned by journal 08 Mar, 2025 First submitted to journal 07 Mar, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6178211","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":430579972,"identity":"63934e97-278c-42cb-ad82-54afc33deaff","order_by":0,"name":"Abla Hamada","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABCElEQVRIie3RMUvEMBTA8RcOOkVvjVTsV3ilcEs5+lVydOiSughOIgWhtwRd67cQhHNNCZyL3BzwhptucigOIgiHudPRlI4O+RMeZPglkAD4fP8yuh8jGNupDguAbCAYQE6qX2L3IxxE8HD+DwlYHxlXR+27uUqjxJStprCOsvBmw+Dy2kmYOs5DsSzihTnnlmxjebpEhFXPNYpiKAJNFkZge7/TRDKOnNTUKSJFky+x09ljY0kDOpOs6BSpmZOgopOwrPXsgQlUHeiZZCKuSI1OEms6ScvbIm9e3vZkm0sjLoCvuJOcPcvkVXyk07u5SDoO6+m8KZ4+u54Xsz/yV+47fD6fzzekbwXKVh8JOKFBAAAAAElFTkSuQmCC","orcid":"","institution":"University of batna2","correspondingAuthor":true,"prefix":"","firstName":"Abla","middleName":"","lastName":"Hamada","suffix":""},{"id":430579973,"identity":"ab485df3-4929-48a9-b6e0-b046a7641485","order_by":1,"name":"Oulmi Kafia","email":"","orcid":"","institution":"University of Batna 1 Hadj Lakhdar: Universite de Batna 1 Hadj Lakhdar","correspondingAuthor":false,"prefix":"","firstName":"Oulmi","middleName":"","lastName":"Kafia","suffix":""},{"id":430579974,"identity":"921a8c64-2b9d-45ec-86a9-582ef4ff398f","order_by":2,"name":"Laid Saouli","email":"","orcid":"","institution":"University of Batna 2: Universite Batna 2","correspondingAuthor":false,"prefix":"","firstName":"Laid","middleName":"","lastName":"Saouli","suffix":""}],"badges":[],"createdAt":"2025-03-07 12:17:42","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6178211/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6178211/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":79367810,"identity":"4c281ebd-7465-4623-ad57-7528964207a0","added_by":"auto","created_at":"2025-03-27 13:44:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":451091,"visible":true,"origin":"","legend":"","description":"","filename":"AblaHamadaspaperuniv.ofBatna2.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6178211/v1_covered_ee1a4bea-88c7-4472-bddc-26a783c952f5.pdf"}],"financialInterests":"","formattedTitle":"Aqueous Extracts of Curcuma and Ginger as Green Corrosion Inhibitors on Carbon Steel in Hydrochloric Solution","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"chemical-papers","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"chpa","sideBox":"Learn more about [Chemical Papers](http://link.springer.com/journal/11696)","snPcode":"11696","submissionUrl":"https://www.editorialmanager.com/CHPA/default.aspx","title":"Chemical Papers","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Adsorption, Carbon steel, Corrosion protection, Extracts, Green inhibitors, Inhibition efficiency","lastPublishedDoi":"10.21203/rs.3.rs-6178211/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6178211/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis research studied the corrosion performance of green corrosion inhibitors (curcuma and ginger) for carbon steel in 1.5M HCl medium. Their inhibition properties was evaluated by several methods, gravimetric and electrochemical tests was employed to determine the inhibition efficiency, corrosion rate and the type of inhibition. The experimentl results show that the inhibition effeciency depends on the change of concentration, at an optimum concentration of 800mg/l, ginger inhibitor reduced corrosion rate to 0.000814 g/cm\u003csup\u003e2\u003c/sup\u003e.h, with a 73.46% inhibition efficiency. Curcuma extract at an optimum concentration of 1000mg/l reduced corrosion rate to 0.000331 g/cm\u003csup\u003e2\u003c/sup\u003e.h with an inhibitory effeciency of 89.20%, forming a protective hydrophobic film on the metal surface, wich maximally blocked the cathodic corrosive process. Corrosion rate reaches 0.003068 g/cm\u003csup\u003e2\u003c/sup\u003e.h without inhibitor.\u003c/p\u003e \u003cp\u003eThe OCP plot indicates that the potential evolution for the inhibitor free experiment is characterized by a decrease in potential almost \u0026minus;\u0026thinsp;0.195 V at 200 s,followed by an increase in potential to -0.165 V. These potential changes indicate metal attack followed by anoblissement. In the presence of a ginger inhibitor, the potential increases until it reaches \u0026minus;\u0026thinsp;0.130 V at 400 s, indicating that the material is accumulating. In the presence of a curcuma inhibitor, the potential decreases until it reaches \u0026minus;\u0026thinsp;0.191 V, indicating that the metal is being attacked continuously.\u003c/p\u003e \u003cp\u003eIn addition, the obtained adsorption free energy of-21.024 kJ/mol for curcuma extract and \u0026minus;\u0026thinsp;19.995 kJ/mol for ginger extract, indicates that the extracts interaction with the metal surface was a physical adsorption, and the adsorption behaviour of extracts was obeyed by Langmuir isotherm .\u003c/p\u003e","manuscriptTitle":"Aqueous Extracts of Curcuma and Ginger as Green Corrosion Inhibitors on Carbon Steel in Hydrochloric Solution","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-03-27 13:12:02","doi":"10.21203/rs.3.rs-6178211/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2025-03-20T13:27:04+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-03-18T15:06:07+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"Chemical Papers","date":"2025-03-15T14:04:54+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-03-08T14:23:41+00:00","index":"","fulltext":""},{"type":"submitted","content":"Chemical Papers","date":"2025-03-07T07:16:42+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"chemical-papers","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"chpa","sideBox":"Learn more about [Chemical Papers](http://link.springer.com/journal/11696)","snPcode":"11696","submissionUrl":"https://www.editorialmanager.com/CHPA/default.aspx","title":"Chemical Papers","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"f748b97f-bb61-4555-888b-c71b8ca9b5ba","owner":[],"postedDate":"March 27th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2025-03-27T13:12:03+00:00","versionOfRecord":[],"versionCreatedAt":"2025-03-27 13:12:02","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6178211","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6178211","identity":"rs-6178211","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}