Gum Arabic Magnetized Graphene Oxide Composite for the Removal of Fluorescent Dye Fluorescein from Aqueous Solutions: Equilibrium, Kinetic and Thermodynamic Studies

Gum Arabic Magnetized Graphene Oxide Composite for the Removal of Fluorescent Dye Fluorescein from Aqueous Solutions: Equilibrium, Kinetic and Thermodynamic Studies | 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 Gum Arabic Magnetized Graphene Oxide Composite for the Removal of Fluorescent Dye Fluorescein from Aqueous Solutions: Equilibrium, Kinetic and Thermodynamic Studies Anwar Ali, Fatima Khitab, Jasmin Shah, Muhammad Rasul Jan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4641415/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 9 You are reading this latest preprint version Abstract In recent years, due to industrialization water pollution is the major issue. The aim of the present work was the synthesis of solid Gum Arabic Magnetized Graphene Oxide (GA-MGO) and its application for the removal of fluorescent dye, fluorescein from aqueous samples. The characterization of the composite was carried out through FTIR, SEM, EDX, point of zero charge, and surface area. Various parameters optimization such as pH, shaking time, adsorbent dose, adsorbate concentration, temperature, and their influence on the removal of fluorescein using GA-MGO composite during the adsorption process was studied. The synthesized GA-MGO exhibited high adsorption efficiency of 94.18 % in 60 mins (pH 2, fluorescein 20 µg mL -1 , 0.08 g L -1 of adsorbent). The synthesized GA-MGO composite has a high capacity to remove fluorescein molecules from aqueous solution at 25 °C. The kinetics of adsorption was investigated and it was found that adsorption followed pseudo-second-order kinetics with the regression coefficient R 2 value of 0.962. The R 2 value of Langmuir (0.985) and Freundlich (0.894) showed that the Langmuir adsorption isotherm fitted best to the adsorption process. Different thermodynamic parameters, Gibb’s free energy and Van’t Hoff equation reveals tht the proposed reaction is spontaneous and exothermic. Regeneration of adsorbent/ desorption of dye and application of composite to the sample of sewage and industrial effluents results in better adsorption. The finding reveals the feasibility of GA-MGO composite as potential precursor for the effective adsorption of fluorescent dyes due to its high surface area. Earth and environmental sciences/Environmental sciences Physical sciences/Chemistry Physical sciences/Materials science Gum Arabic Magnetized Graphene Oxide (GA-MGO) fluorescent dyes Adsorption Regeneration Kinetic models adsorption isotherms Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviews received at journal 18 Jul, 2024 Reviews received at journal 09 Jul, 2024 Reviewers agreed at journal 07 Jul, 2024 Reviewers agreed at journal 07 Jul, 2024 Reviewers invited by journal 07 Jul, 2024 Editor assigned by journal 05 Jul, 2024 Editor invited by journal 02 Jul, 2024 Submission checks completed at journal 28 Jun, 2024 First submitted to journal 26 Jun, 2024 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-4641415","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":328526708,"identity":"86e86070-acd3-48b8-b851-3f10520f2ca6","order_by":0,"name":"Anwar Ali","email":"","orcid":"","institution":"University of Peshawar","correspondingAuthor":false,"prefix":"","firstName":"Anwar","middleName":"","lastName":"Ali","suffix":""},{"id":328526709,"identity":"cb826ed6-0169-484c-b39c-f68648de2551","order_by":1,"name":"Fatima Khitab","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA80lEQVRIiWNgGAWjYBAC+wMMDEDEYGDAzMDAzFABZBHSYgBUB9XCDGSeIVILmAYxmBnbiNHCfv7goRs1DMbm7PwHPxfOOyxvzt58gOFHxTbcfuFJZjicc4zBzLKZmVl65rbDhjt7jiUw9py5jcdhIC1sDDYGh5kZpHm3HWbccCPHAOhCPFr4HwO1/ANrYf7NO+ewPWEtEkBbctsYzIBa2KR5Gw4nEqHlscHh3D4GY6AWM+sZx9KTN5w5lnAQr1/4Ex9/zvnGYLjh/MHHtwtqrG03HG8++OBHBW4tUPAfxmgGkwcIqUcGdaQoHgWjYBSMghECAF+sVvnqay+5AAAAAElFTkSuQmCC","orcid":"","institution":"University of Peshawar","correspondingAuthor":true,"prefix":"","firstName":"Fatima","middleName":"","lastName":"Khitab","suffix":""},{"id":328526710,"identity":"8ac5dac8-61a6-402f-bcf4-a243756eb27c","order_by":2,"name":"Jasmin Shah","email":"","orcid":"","institution":"University of Peshawar","correspondingAuthor":false,"prefix":"","firstName":"Jasmin","middleName":"","lastName":"Shah","suffix":""},{"id":328526711,"identity":"651beed3-6450-49ef-b35d-7dc99bcadb38","order_by":3,"name":"Muhammad Rasul Jan","email":"","orcid":"","institution":"University of Peshawar","correspondingAuthor":false,"prefix":"","firstName":"Muhammad","middleName":"Rasul","lastName":"Jan","suffix":""}],"badges":[],"createdAt":"2024-06-26 09:04:37","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4641415/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4641415/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":60810746,"identity":"a521bfbe-9aa4-4f7d-9b45-b4a1d712ea6e","added_by":"auto","created_at":"2024-07-22 10:50:13","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":747850,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4641415/v1_covered_27b980c6-87e2-455c-9f9b-bbb8b1e8e69c.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Gum Arabic Magnetized Graphene Oxide Composite for the Removal of Fluorescent Dye Fluorescein from Aqueous Solutions: Equilibrium, Kinetic and Thermodynamic Studies","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Gum Arabic Magnetized Graphene Oxide (GA-MGO), fluorescent dyes, Adsorption, Regeneration, Kinetic models, adsorption isotherms","lastPublishedDoi":"10.21203/rs.3.rs-4641415/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4641415/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn recent years, due to industrialization water pollution is the major issue.\u0026nbsp; The aim of the present work was the synthesis of solid Gum Arabic Magnetized Graphene Oxide (GA-MGO) and its application for the removal of fluorescent dye, fluorescein from aqueous samples. The characterization of the composite was carried out through FTIR, SEM, EDX, point of zero charge, and surface area. Various parameters optimization such as pH, shaking time, adsorbent dose, adsorbate concentration, temperature, and their influence on the removal of fluorescein using GA-MGO composite during the adsorption process was studied. The synthesized GA-MGO exhibited high adsorption efficiency of 94.18 % in 60 mins (pH 2, fluorescein 20 µg mL\u003csup\u003e-1\u003c/sup\u003e, 0.08 g L\u003csup\u003e-1\u003c/sup\u003e of adsorbent). The synthesized GA-MGO composite has a high capacity to remove fluorescein molecules from aqueous solution at 25 °C. \u0026nbsp;The kinetics of adsorption was investigated and it was found that adsorption followed pseudo-second-order kinetics with the regression coefficient R\u003csup\u003e2 \u003c/sup\u003evalue of 0.962. 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