Removal of anionic dyes utilizing Box-Behnken design and cloud point extraction coupled with derivative spectrophotometry

Removal of anionic dyes utilizing Box-Behnken design and cloud point extraction coupled with derivative spectrophotometry | 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 Removal of anionic dyes utilizing Box-Behnken design and cloud point extraction coupled with derivative spectrophotometry Shahnaz Sargazi, Ali Asghar Ebrahimi, Mohammad Taghi Ghaneian, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3964598/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 Cloud point extraction (CPE) was used in this work to eliminate anionic dyes, Cresol red and Methyl orange, in the form of binary combinations. To remove these dyes from aqueous solutions, Triton X-100 was utilized. We chose wavelengths of 365 nm and 520 nm for Cresol red and Methyl orange, respectively, using a derivative spectrophotometer and first-order derivatives. The response surface methodology was then utilized to ascertaint he effect of surfactant concentration, temperature, and time on the dyes' elimination processes. The quadratic mathematical model obtained from the Box-Behnken design (BBD) matrix was used and developed to estimate the influence of each variable and its relationship with the elimination parameters. Using model equations and comparison between predicted and empirical values, coefficients of determination (R 2 ) bigger than 0.97 were obtained. By applying variance analysis, significance and anticipation of models were validated, and process variables were estimated. The data demonstrate that the mentioned dyes adsorption may be described using the model of pseudo-first-order in kinetic modelling. The data illustrates that the analyzed dyes adhere to the Langmuir model, with a correlation value of 0.86 for Cresol red and 0.87 for Methyl orange. The monolayer capacity (Q max ) was determined to be 0.77 mol/mol for Cresol red and 26.41 mol/mol for Methyl orange. Earth and environmental sciences/Environmental sciences Physical sciences/Chemistry Physical sciences/Materials science Cloud point extraction Anionic dyes Box-Behnken 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. 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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-3964598","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":276686934,"identity":"806923ae-edc1-4dc1-bc60-d6cf8b4f0d3f","order_by":0,"name":"Shahnaz Sargazi","email":"","orcid":"","institution":"Shahid Sadoughi University of Medical Sciences","correspondingAuthor":false,"prefix":"","firstName":"Shahnaz","middleName":"","lastName":"Sargazi","suffix":""},{"id":276686936,"identity":"6f2a3572-c343-44db-9b16-2ead3fea2f76","order_by":1,"name":"Ali Asghar Ebrahimi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA/klEQVRIiWNgGAWjYDACCQYGZgYDBh5+ZsaGw38qgCLMzA3EaZFsbz74gOcMSAsjMVqAwODMsWQD3jYQk4AWfuneh58LCrbJMNzIMZOQnFcbzd8O1PKjYhtOLZJzjhtLzzC4zcM4A6jFcNvx3BmHGRsYe87cxqnF4EYagzQPUAuzBFBL4rZjuQ1ALcyMbbi12N9IY/4N0sIG0nJwzrHc+YS0GEiksYFt4eE5lmzY2FCTu4GQFok7x9isQVok2JsPPmY4diB3I1DLQXx+4Z/dxnyb589te3ugysMMNXW5884fPvjgRwVuLejgMJg8QLR6IKgjRfEoGAWjYBSMEAAA3WFZWCUe8fwAAAAASUVORK5CYII=","orcid":"","institution":"Shahid Sadoughi University of Medical Sciences","correspondingAuthor":true,"prefix":"","firstName":"Ali","middleName":"Asghar","lastName":"Ebrahimi","suffix":""},{"id":276686937,"identity":"4ca954d8-9f18-4772-a9e5-d066f582afd6","order_by":2,"name":"Mohammad Taghi Ghaneian","email":"","orcid":"","institution":"Shahid Sadoughi University of Medical Sciences","correspondingAuthor":false,"prefix":"","firstName":"Mohammad","middleName":"Taghi","lastName":"Ghaneian","suffix":""},{"id":276686938,"identity":"5cfb091f-95bf-4763-819b-fc38c2864938","order_by":3,"name":"Mashaallah Rahmani","email":"","orcid":"","institution":"University of Sistan and Baluchestan","correspondingAuthor":false,"prefix":"","firstName":"Mashaallah","middleName":"","lastName":"Rahmani","suffix":""}],"badges":[],"createdAt":"2024-02-17 16:30:24","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3964598/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3964598/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":57589897,"identity":"091d6c4d-b2c3-4172-b0d9-0539b468536e","added_by":"auto","created_at":"2024-06-03 04:37:29","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1301528,"visible":true,"origin":"","legend":"","description":"","filename":"manuscriptplan.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3964598/v1_covered_60fd9a81-8c3d-4db6-9c82-ad7596b484e4.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Removal of anionic dyes utilizing Box-Behnken design and cloud point extraction coupled with derivative spectrophotometry","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":"Cloud point extraction, Anionic dyes, Box-Behnken","lastPublishedDoi":"10.21203/rs.3.rs-3964598/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3964598/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eCloud point extraction (CPE) was used in this work to eliminate anionic dyes, Cresol red and Methyl orange, in the form of binary combinations. To remove these dyes from aqueous solutions, Triton X-100 was utilized. We chose wavelengths of 365 nm and 520 nm for Cresol red and Methyl orange, respectively, using a derivative spectrophotometer and first-order derivatives. The response surface methodology was then utilized to ascertaint he effect of surfactant concentration, temperature, and time on the dyes' elimination processes. The quadratic mathematical model obtained from the Box-Behnken design (BBD) matrix was used and developed to estimate the influence of each variable and its relationship with the elimination parameters. Using model equations and comparison between predicted and empirical values, coefficients of determination (R\u003csup\u003e2\u003c/sup\u003e) bigger than 0.97 were obtained. By applying variance analysis, significance and anticipation of models were validated, and process variables were estimated. The data demonstrate that the mentioned dyes adsorption may be described using the model of pseudo-first-order in kinetic modelling. The data illustrates that the analyzed dyes adhere to the Langmuir model, with a correlation value of 0.86 for Cresol red and 0.87 for Methyl orange. 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