Distinctive Characterization of the Detoxification of Hexavalent Cr(VI) by Pterocarpus Marsupium Bark Carbon (PBC, APBC, and BPBC)

Distinctive Characterization of the Detoxification of Hexavalent Cr(VI) by Pterocarpus Marsupium Bark Carbon (PBC, APBC, and BPBC) | 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 Distinctive Characterization of the Detoxification of Hexavalent Cr(VI) by Pterocarpus Marsupium Bark Carbon (PBC, APBC, and BPBC) S. SURYA, V. NANDHAKUMAR, K. VEERAVELAN, A. RAKINI, HERYANTO HERYANTO This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4802350/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 The purpose of this research is to investigate the removal of Hexavalent-Chromium Cr(VI) ion using activated carbons prepared from the barks of Pterocarpus Marsupium Roxb. by phosphoric acid, specifically P terocarpus Marsupium B ark C arbon, A cid modified P terocarpus Marsupium B ark C arbon, and B ase modified P terocarpus Marsupium B ark C arbon. Batch adsorption studies are performed by varying factors such as solution pH, adsorbent dosage, contact time, starting concentration, and temperature. Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich isotherm equations were used to process equilibrium data. Isotherm constant values were found and their relevance was explained. The adsorption of Cr(VI) ions onto PBC, APBC, and BPBC was compared. The data collected from the influence of contact time for varying beginning concentrations were processed using the kinetic equations of Lagergren, ΔH o , and Webber Morris. The expected adsorption capacity and rate constants were determined. The adsorption capacities predicted were compared to experimental adsorption capacities. The statistical method Mean Summation of Error Squares (MSSE) was used to find the best-fitting model. The thermodynamic quantities ΔH°, ΔS°, and ΔG° were calculated using equilibrium data collected at various temperatures. The conclusions drawn from these values were addressed. The ability of adsorbents loaded with Cr (VI) ions to regenerate in acidic, alkaline, and neutral mediums was examined. To understand the adsorbate-adsorbent interactions, the FTIR spectra and EDAX of adsorbents were examined before and after sorption of Cr (VI) ions. Activated Carbon of Pterocarpus Marsupium Bark Cr(VI) ion Thermodynamic parameters Adsorption isotherm Equilibrium models Kinetics 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. 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-4802350","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":341385316,"identity":"47a613e0-c940-450f-8d4b-cff1d5f31c41","order_by":0,"name":"S. SURYA","email":"","orcid":"","institution":"Bharathidasan University","correspondingAuthor":false,"prefix":"","firstName":"S.","middleName":"","lastName":"SURYA","suffix":""},{"id":341385317,"identity":"f4751f5a-065f-464f-b84a-9c6c8a9ed62d","order_by":1,"name":"V. 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Batch adsorption studies are performed by varying factors such as solution pH, adsorbent dosage, contact time, starting concentration, and temperature. Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich isotherm equations were used to process equilibrium data. Isotherm constant values were found and their relevance was explained. The adsorption of Cr(VI) ions onto PBC, APBC, and BPBC was compared. The data collected from the influence of contact time for varying beginning concentrations were processed using the kinetic equations of Lagergren, ΔH\u003csup\u003eo\u003c/sup\u003e, and Webber Morris. The expected adsorption capacity and rate constants were determined. The adsorption capacities predicted were compared to experimental adsorption capacities. The statistical method Mean Summation of Error Squares (MSSE) was used to find the best-fitting model. The thermodynamic quantities ΔH\u0026deg;, ΔS\u0026deg;, and ΔG\u0026deg; were calculated using equilibrium data collected at various temperatures. The conclusions drawn from these values were addressed. The ability of adsorbents loaded with Cr (VI) ions to regenerate in acidic, alkaline, and neutral mediums was examined. To understand the adsorbate-adsorbent interactions, the FTIR spectra and EDAX of adsorbents were examined before and after sorption of Cr (VI) ions.\u003c/p\u003e","manuscriptTitle":"Distinctive Characterization of the Detoxification of Hexavalent Cr(VI) by Pterocarpus Marsupium Bark Carbon (PBC, APBC, and BPBC)","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-08-28 08:06:02","doi":"10.21203/rs.3.rs-4802350/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","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}}],"origin":"","ownerIdentity":"4c1f82ed-2ff2-4f22-a265-ec79bf154210","owner":[],"postedDate":"August 28th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2024-12-19T14:53:45+00:00","versionOfRecord":[],"versionCreatedAt":"2024-08-28 08:06:02","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4802350","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4802350","identity":"rs-4802350","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}