Simultaneous removal of four aflatoxins using magnetic nanobentonite as a green and fast sorbent; Kinetic,termodynamic and isotherm investigation

Simultaneous removal of four aflatoxins using magnetic nanobentonite as a green and fast sorbent; Kinetic,termodynamic and isotherm investigation | 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 Simultaneous removal of four aflatoxins using magnetic nanobentonite as a green and fast sorbent; Kinetic,termodynamic and isotherm investigation Marjan Shahinfar, Naser Hafezi Moghaddas, Gholam Reza Lashkaripour, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-2624465/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 04 Oct, 2023 Read the published version in Environmental Science and Pollution Research → Version 1 posted 6 You are reading this latest preprint version Abstract In the study, an adsorptive removal strategy as a straightforward and fast procedure was developed to remove four aflatoxins, including aflatoxin B1 (AF-B1), aflatoxin B2 (AF-B2), aflatoxin G1 (AF-G1), and aflatoxin G2 (AF-G2). A simple and green sorbent consisting of two components (activated nanobentonite and Fe 3 O 4 nanoparticles) was synthesized based on three steps using acidic treatment, ultrasonic procedure, and chemical precipitation method. The sorbent was characterized by several techniques such as FTIR, FESEM, TEM, XRD and VSM to determine the sorbent structure and morphology. An experimental design based on a central composite design was utilized to optimize factors in the removal of AFs. The optimum values of the factors (pH, sorbent amount, shaking rate) was 6.8, 0.076 g and 160 rpm, respectively. Three models, including pseudo-first-order, pseudo-second-order, and intra-particle diffusion models, were used to investigate the kinetics of the removal process. The removal of AFs using magnetic nanobentonite was fitted with the pseudo-second-order model better than other models with an equilibrium time lower than 30 min. the thermodynamic data show that the adsorption of AFs on the sorbent is a spontaneous and feasible process due to negative values of the Gibbs free energy change (ΔG) at different temperatures. Two models (Langmuir and Freundlich models) were chosen to study the isotherm of the removal procedure, indicating that the Freundlich model describes the results better than the Langmuir model. The maximum adsorption capacity of the sorbent for removing AF-B1, AF-B2, AF-G1, and AF-G2 are 357.14, 400.0, 370.37, and 400.0 mg g − 1 , respectively. The sorbent reusability was also evaluated to study the sorbent's ability for the removal of AFs, indicating that the sorbent was used for 5 cycles without a significant reduction in the ability to remove AFs. Magnetic nanobentonite Adsorptive removal Aflatoxin Green sorbent Kinetic study Isotherm investigation Full Text Supplementary Files ESM.docx Cite Share Download PDF Status: Published Journal Publication published 04 Oct, 2023 Read the published version in Environmental Science and Pollution Research → Version 1 posted Editorial decision: Major Revision 19 Jul, 2023 Reviewers agreed at journal 23 May, 2023 Reviewers invited by journal 17 Apr, 2023 Editor invited by journal 05 Apr, 2023 Editor assigned by journal 30 Mar, 2023 First submitted to journal 23 Mar, 2023 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. 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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-2624465","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":192608945,"identity":"aaf10ff0-9c7a-4380-bae5-f784fb4b8310","order_by":0,"name":"Marjan Shahinfar","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABEklEQVRIie2PMUsDMRTHcxzcdOIal+YrPDkIFo7r1xBcEgLnouDYoUNc2kVwPXDwEzi4OAcOnIrnGNCh5RYHh4CLQ4U+s+fsWDA/yCMP3o//e4REIvsI9fUE3+FXv4ESP8m12UHxlUN+Vf8qemcFaO5a3w4q7E6nH25KR+xUCKDQVQ+LFlNm5VlIgXeTjZslLY6tMCuAN/W0lKg815c6pFCRFQdzKh8bqUGgwg0qiW6DCmtQ+fGKItTAi+LdelghVqR9gso9rcmRBlNx+0cKWDlPbvAWyD+zgoAS3GKKGLiFNap139NyxBYXaU821YR35+uVm5XhxQhu5eNehW+lnxTBcU/qfNyt8d1keDgSiUT+I1vla2R2mscTzAAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0003-2230-0314","institution":"Ferdowsi University of Mashhad","correspondingAuthor":true,"prefix":"","firstName":"Marjan","middleName":"","lastName":"Shahinfar","suffix":""},{"id":192608946,"identity":"0bf89f25-601c-4cde-90f2-7b56ec4db52d","order_by":1,"name":"Naser Hafezi Moghaddas","email":"","orcid":"","institution":"Ferdowsi University of Mashhad","correspondingAuthor":false,"prefix":"","firstName":"Naser","middleName":"Hafezi","lastName":"Moghaddas","suffix":""},{"id":192608947,"identity":"b04d9931-7a53-4319-9982-0e569a371ee3","order_by":2,"name":"Gholam Reza Lashkaripour","email":"","orcid":"","institution":"Ferdowsi University of Mashhad","correspondingAuthor":false,"prefix":"","firstName":"Gholam","middleName":"Reza","lastName":"Lashkaripour","suffix":""},{"id":192608948,"identity":"08bd4283-f7f1-47b4-8e2e-8352582f3bd4","order_by":3,"name":"Amir Fottovat","email":"","orcid":"","institution":"Ferdowsi University of Mashhad","correspondingAuthor":false,"prefix":"","firstName":"Amir","middleName":"","lastName":"Fottovat","suffix":""}],"badges":[],"createdAt":"2023-02-24 11:57:32","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-2624465/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-2624465/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s11356-023-29963-y","type":"published","date":"2023-10-04T15:01:58+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":44301720,"identity":"d9bf5a0b-9140-4320-b394-8ee368d52256","added_by":"auto","created_at":"2023-10-09 15:07:49","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":662841,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-2624465/v1_covered_e7902443-6ce9-49c2-9cbf-1840d5354f6d.pdf"},{"id":35990148,"identity":"f62e1ef5-b1e6-4a5b-b9b3-e3fc7ff1b2ac","added_by":"auto","created_at":"2023-04-19 10:06:56","extension":"docx","order_by":1,"title":"","display":"","copyAsset":false,"role":"supplement","size":104104,"visible":true,"origin":"","legend":"","description":"","filename":"ESM.docx","url":"https://assets-eu.researchsquare.com/files/rs-2624465/v1/32fe4d39858f12eb68168bc4.docx"}],"financialInterests":"","formattedTitle":"Simultaneous removal of four aflatoxins using magnetic nanobentonite as a green and fast sorbent; 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