Synthesis and Characterization of Ecosorbents and Their Application in Waste Cooking Oil

Synthesis and Characterization of Ecosorbents and Their Application in Waste Cooking Oil | 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 Synthesis and Characterization of Ecosorbents and Their Application in Waste Cooking Oil Thalita Silva Neto, Andressa I. C. Silva, Francisco M. Monteceli, and 5 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4816073/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 Globally, millions of tons of waste cooking oils (WCO) are generated yearly, and the recovery rate for manufacturing chemicals such as biodiesel is still low. Unfortunately, part of the WCO has been directly discharged into natural environments, underscoring the industrial significance of developing novel technologies for its utilization. As a possible solution to its recovery, this research proposes a new approach for Agave Americana fiber (AF) as a filler in castor oil-based polyurethane, obtaining ecosorbents and evaluating the sorption capacity of WCO. The pristine PU and PU/AFX% ecosorbents (X stands for AF content between 5 to 20 wt%.) were characterized by SEM, OM, density, FTIR, XRD, contact angle (CA), TGA, and water absorption. The inclusion of AF fillers impacted density and influenced morphological, physical-chemical, and thermal properties. Sorption capacity and efficiency were evaluated by varying the contact time and concentration in the oil/water system, and a direct influence of fiber content on sorption capacity was observed. PU/AF20% presented the highest CA and the best sorption capacity and efficiency. Response surface methodology (RSM) evaluated the optimization behavior of sorption capacity (for water and oil), emphasizing a strong dependency on sorption capacity as a function of fiber content variation. Langmuir and Freundlich isotherm models well-defined the sorption mechanisms, and the Langmuir model demonstrated the best fit for PU/AF20%, exhibiting a maximum adsorption capacity of 163.93 g g-1. PU/AF20% reusability was evaluated for 21 cycles with a maximum efficiency of 74.2% for oil systems. Thus, AF is an innovative filler in castor oil-based polyurethane for discarded waste cooking oil sorption. Waste cooking oil castor oil-based polyurethane Agave America fibers Biocomposites Adsorption 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-4816073","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":337756730,"identity":"cc14797b-4e2a-41f7-b5a0-7bfb8ccead08","order_by":0,"name":"Thalita Silva Neto","email":"","orcid":"","institution":"State University of Rio de Janeiro (UERJ)","correspondingAuthor":false,"prefix":"","firstName":"Thalita","middleName":"Silva","lastName":"Neto","suffix":""},{"id":337756731,"identity":"290c69ef-8962-4f4b-81d6-dba2125acf14","order_by":1,"name":"Andressa I. C. 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Unfortunately, part of the WCO has been directly discharged into natural environments, underscoring the industrial significance of developing novel technologies for its utilization. As a possible solution to its recovery, this research proposes a new approach for Agave Americana fiber (AF) as a filler in castor oil-based polyurethane, obtaining ecosorbents and evaluating the sorption capacity of WCO. The pristine PU and PU/AFX% ecosorbents (X stands for AF content between 5 to 20 wt%.) were characterized by SEM, OM, density, FTIR, XRD, contact angle (CA), TGA, and water absorption. The inclusion of AF fillers impacted density and influenced morphological, physical-chemical, and thermal properties. Sorption capacity and efficiency were evaluated by varying the contact time and concentration in the oil/water system, and a direct influence of fiber content on sorption capacity was observed. PU/AF20% presented the highest CA and the best sorption capacity and efficiency. 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