Extractive removal of magnesium as a nuisance substance from sulfate solution of nickel production plant

Extractive removal of magnesium as a nuisance substance from sulfate solution of nickel production plant | 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 Article Extractive removal of magnesium as a nuisance substance from sulfate solution of nickel production plant Amir Hossein Haratian, Ahad Ghaemi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6230348/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In the nickel production plant, after some treatments using solvent extraction, still has a low concentration of magnesium. During the Ni electro-winning step, magnesium accumulation occurs in the system, which can affect the mechanical properties of produced nickel. Separation of Ni and Mg using a solvent extraction process from a nickel production plant sulfate solution that contains 46.04 g/lit Ni and 28.02 g/lit Mg using Cyanex272, D2HPA, and synergy of Cyanex272 and D2HPA has been explored in this research. The results of this experiment have been statistically analyzed to determine the main effects of the solvent extraction factors, which were the type of extractant, extraction pH at equilibrium, temperature, contacting time, and organic to aqueous phase ratio. The obtained results in this experiment showed that extractant cyanex272 20% v/v and D2HPA 10% v/v + Cyanex272 10 v/v can be used as a decent solvent to extract magnesium from nickel sulfate solutions, but D2HPA 20% v/v didn’t show to be effective in this case. The value of 96.2% Mg in two stages at pH equal to 5.5, room temperature (26.5 ± 0.5°C), 15 min contacting time and organic to aqueous phase ratio equal to 3 was extracted using cyanex272 20% v/v diluted in kerosene while the co-extraction of Ni in the organic phase was 22%. Using cyanex272 10% v/v + D2HPA 10% v/v diluted in kerosene, 96.6% Mg and 27% Ni in two stages at pH equal to 5.5, room temperature (26.5 ± 0.5°C), 15 min contacting time and O/A phase ratio = 3:1 where extracted. Physical sciences/Engineering/Chemical engineering Earth and environmental sciences/Environmental sciences/Environmental chemistry Earth and environmental sciences/Environmental sciences/Environmental impact Cyanex272 D2HPA Solvent Extraction Hydrometallurgy Mg Ni Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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-6230348","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":433781603,"identity":"7d7f871e-0cd2-40b4-99db-8a74f380f8e4","order_by":0,"name":"Amir Hossein Haratian","email":"","orcid":"","institution":"Iran University of Science and Technology, IUST","correspondingAuthor":false,"prefix":"","firstName":"Amir","middleName":"Hossein","lastName":"Haratian","suffix":""},{"id":433781604,"identity":"cebbb8f3-166b-4963-98c7-dd67ec3cabca","order_by":1,"name":"Ahad Ghaemi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1ElEQVRIiWNgGAWjYFACHhAhIccG47PhVoqqxRiokrGBFC0MiQ0wLQQBf//agx8+5lik90mkP3/AUGPHwCd9AL8WiRvvkiVnbpPIbZPIMWxgOJbMwMaXQMCaG2cMpHkhWoAOYzvAwMZDQIf8jTPGv/9uk0hnk0h/2MDwjwgtBud7zKQZt0kksEkkGDYwthGhxfAGj5ll7zYJwzaeN4YzEvuSeQhqkTt/xvjGz2118vLt6Q8+fPhmJyffQ0ALg0QCEicBFk14Af8BwmpGwSgYBaNghAMABKw68LruZoAAAAAASUVORK5CYII=","orcid":"","institution":"Iran University of Science and Technology, IUST","correspondingAuthor":true,"prefix":"","firstName":"Ahad","middleName":"","lastName":"Ghaemi","suffix":""}],"badges":[],"createdAt":"2025-03-15 04:38:08","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6230348/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6230348/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":80721254,"identity":"ec5f201f-ffef-4746-9bae-69085960b53f","added_by":"auto","created_at":"2025-04-16 11:01:47","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":473738,"visible":true,"origin":"","legend":"","description":"","filename":"Haratian14031225.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6230348/v1_covered_616f0fef-71c0-41fa-aaec-d3d4984eb26c.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Extractive removal of magnesium as a nuisance substance from sulfate solution of nickel production plant","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"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":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Cyanex272, D2HPA, Solvent Extraction, Hydrometallurgy, Mg, Ni","lastPublishedDoi":"10.21203/rs.3.rs-6230348/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6230348/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn the nickel production plant, after some treatments using solvent extraction, still has a low concentration of magnesium. During the Ni electro-winning step, magnesium accumulation occurs in the system, which can affect the mechanical properties of produced nickel. Separation of Ni and Mg using a solvent extraction process from a nickel production plant sulfate solution that contains 46.04 g/lit Ni and 28.02 g/lit Mg using Cyanex272, D2HPA, and synergy of Cyanex272 and D2HPA has been explored in this research. The results of this experiment have been statistically analyzed to determine the main effects of the solvent extraction factors, which were the type of extractant, extraction pH at equilibrium, temperature, contacting time, and organic to aqueous phase ratio. The obtained results in this experiment showed that extractant cyanex272 20% v/v and D2HPA 10% v/v\u0026thinsp;+\u0026thinsp;Cyanex272 10 v/v can be used as a decent solvent to extract magnesium from nickel sulfate solutions, but D2HPA 20% v/v didn\u0026rsquo;t show to be effective in this case. The value of 96.2% Mg in two stages at pH equal to 5.5, room temperature (26.5\u0026thinsp;\u0026plusmn;\u0026thinsp;0.5\u0026deg;C), 15 min contacting time and organic to aqueous phase ratio equal to 3 was extracted using cyanex272 20% v/v diluted in kerosene while the co-extraction of Ni in the organic phase was 22%. Using cyanex272 10% v/v\u0026thinsp;+\u0026thinsp;D2HPA 10% v/v diluted in kerosene, 96.6% Mg and 27% Ni in two stages at pH equal to 5.5, room temperature (26.5\u0026thinsp;\u0026plusmn;\u0026thinsp;0.5\u0026deg;C), 15 min contacting time and O/A phase ratio\u0026thinsp;=\u0026thinsp;3:1 where extracted.\u003c/p\u003e","manuscriptTitle":"Extractive removal of magnesium as a nuisance substance from sulfate solution of nickel production plant","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-03-31 12:45:50","doi":"10.21203/rs.3.rs-6230348/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"f44e5785-a9be-494b-ab4c-3961d378d79c","owner":[],"postedDate":"March 31st, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":46189593,"name":"Physical sciences/Engineering/Chemical engineering"},{"id":46189594,"name":"Earth and environmental sciences/Environmental sciences/Environmental chemistry"},{"id":46189595,"name":"Earth and environmental sciences/Environmental sciences/Environmental impact"}],"tags":[],"updatedAt":"2025-04-16T10:53:40+00:00","versionOfRecord":[],"versionCreatedAt":"2025-03-31 12:45:50","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6230348","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6230348","identity":"rs-6230348","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}