Magnetized Chitosan Nanocomposite as an Effective Adsorbent for the Removal of Methylene Blue and Malachite Green Dyes

Magnetized Chitosan Nanocomposite as an Effective Adsorbent for the Removal of Methylene Blue and Malachite Green Dyes | 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 Magnetized Chitosan Nanocomposite as an Effective Adsorbent for the Removal of Methylene Blue and Malachite Green Dyes Fouzia Mashkoor, Abu Nasar This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-233253/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 04 Jan, 2022 Read the published version in Biomass Conversion and Biorefinery → Version 1 posted You are reading this latest preprint version Abstract Herein, a magnetically separable Fe 3 O 4 decorated chitosan was facilely synthesized, systematically characterized, and subsequently employed as a versatile adsorbing material for the adsorption of malachite green and methylene blue dyes. The prepared adsorbent was characteristically examined through Fourier transform infra-red microscopy, scanning electron microscopy with energy-dispersive X-ray analysis, transmission electron microscopy X-ray diffraction, Brunauere-Emmette-Teller surface area analysis, thermogravimetric analysis, and vibrating-sample magnetometry techniques. The performance of adsorbent was studied in batch mode and the the time-dependent experimental data were analyzed with different kinetic models, and pseudo-II nd -order was provided the best fit for the adsorption of both the dyes with a high value of the regression coefficient. The adsorption equilibrium data of both the dyes was best explained by Langmuir isotherm, and the maximum sorption capacity of MG and MB was found to be 55.86 and 76.34 mg g -1 , respectively. Thermodynamic analysis declared that the adsorption of MG and MB onto the MChi was endothermic and spontaneous in nature. Moreover, the adsorbent presented good reusability up to three successive ad-/de-sorption cycles, indicating that MChi is a promising applicant for the treatment of dye-containing wastewater. Environmental Engineering Environmental Policy Adsorption Dye Malachite green Methylene blue Wastewater treatment Magnetized chitosan Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Full Text Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the latest manuscript can be downloaded and accessed as a PDF. Supplementary Files TextS1.docx Cite Share Download PDF Status: Published Journal Publication published 04 Jan, 2022 Read the published version in Biomass Conversion and Biorefinery → 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-233253","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":15213167,"identity":"815978b8-67a0-4cbc-8432-e379ade87985","order_by":0,"name":"Fouzia Mashkoor","email":"","orcid":"","institution":"Aligarh Muslim University Faculty of Engineering and Technology","correspondingAuthor":false,"prefix":"","firstName":"Fouzia","middleName":"","lastName":"Mashkoor","suffix":""},{"id":15213168,"identity":"23070598-334c-460f-bfe1-f7c49ae1ae36","order_by":1,"name":"Abu 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The prepared adsorbent was characteristically examined through Fourier transform infra-red microscopy, scanning electron microscopy with energy-dispersive X-ray analysis, transmission electron microscopy X-ray diffraction, Brunauere-Emmette-Teller surface area analysis, thermogravimetric analysis, and vibrating-sample magnetometry techniques. The performance of adsorbent was studied in batch mode and the the time-dependent experimental data were analyzed with different kinetic models, and pseudo-II\u003csup\u003end\u003c/sup\u003e-order was provided the best fit for the adsorption of both the dyes with a high value of the regression coefficient. The adsorption equilibrium data of both the dyes was best explained by Langmuir isotherm, and the maximum sorption capacity of MG and MB was found to be 55.86 and 76.34 mg g\u003csup\u003e-1\u003c/sup\u003e, respectively. Thermodynamic analysis declared that the adsorption of MG and MB onto the MChi was endothermic and spontaneous in nature. 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