{"data":{"id":"10.6084/m9.figshare.c.2007062","type":"dois","attributes":{"doi":"10.6084/m9.figshare.c.2007062","prefix":"10.6084","suffix":"m9.figshare.c.2007062","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Duan, Lian","givenName":"Lian","familyName":"Duan","affiliation":[],"nameIdentifiers":[]},{"name":"Hu, Ning","givenName":"Ning","familyName":"Hu","affiliation":[],"nameIdentifiers":[]},{"name":"Wang, Tongqing","givenName":"Tongqing","familyName":"Wang","affiliation":[],"nameIdentifiers":[]},{"name":"Wang, Hong","givenName":"Hong","familyName":"Wang","affiliation":[],"nameIdentifiers":[]},{"name":"Ling, Lixia","givenName":"Lixia","familyName":"Ling","affiliation":[],"nameIdentifiers":[]},{"name":"Sun, Yue","givenName":"Yue","familyName":"Sun","affiliation":[],"nameIdentifiers":[]},{"name":"Xie, Xianmei","givenName":"Xianmei","familyName":"Xie","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Removal of Copper and Lead from Aqueous Solution by Adsorption onto Cross-Linked Chitosan/Montmorillonite Nanocomposites in the Presence of Hydroxyl–Aluminum Oligomeric Cations: Equilibrium, Kinetic, and Thermodynamic Studies"}],"publisher":"Taylor \u0026 Francis","container":{},"publicationYear":2015,"subjects":[{"subject":"Biological Sciences"},{"subject":"Immunology"},{"subject":"FOS: Clinical medicine","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"Ecology"},{"subject":"FOS: Biological sciences","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"Chemistry"},{"subject":"Earth and Environmental Sciences"},{"subject":"Physics"},{"subject":"Biochemistry"},{"subject":"Biophysics"}],"contributors":[],"dates":[{"date":"2015-12-05","dateType":"Created"},{"date":"2019-08-19","dateType":"Updated"},{"date":"2015","dateType":"Issued"}],"language":null,"types":{"ris":"GEN","bibtex":"misc","citeproc":"article","schemaOrg":"Collection","resourceType":"Collection","resourceTypeGeneral":"Collection"},"relatedIdentifiers":[],"relatedItems":[],"sizes":[],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"Adsorption removal of Cu (II) and Pb (II) on cross-linked chitosan/Al\u003csub\u003e13\u003c/sub\u003e-pillared montmorillonite (CCPM) was examined in solutions. The chitosan dosage was drastically reduced in the new nanocomposite, which is made from the treated clay (Al\u003csub\u003e13\u003c/sub\u003e-pillared montmorillonite). Several important parameters that influenced the adsorption of Cu (II) and Pb (II) ions, such as cross-linked chitosan-to-clay ratio, pH, temperature, initial concentration, dosage, and contact time effect, were systematically investigated. Result showed that in the nanocomposite with cross-linked chitosan-to-clay ratio of 0.45:1, the maximum removal efficiencies of Cu (II) [pH 6.5, dosage 10 g/L, initial Cu (II) concentration 100 mg/L, contact time 2 h, 298 K] and Pb (II) [pH 6.0, dosage 5 g/L, initial Pb (II) concentration 100 mg/L, contact time 2 h, 298 K] were 96.0% and 99.5%, respectively. Kinetic and isotherm studies have indicated that the adsorption process of Cu (II) or Pb (II) nanocomposites was better fitted by the pseudo-second-order equation and the Freundlich equation, with chemical adsorptions as the rate-limiting step. The metal–ion affinity to the functional groups of CCPM followed the order Pb (II) \u0026gt; Cu (II). The thermodynamic parameters Δ\u003ci\u003eH\u003c/i\u003e and Δ\u003ci\u003eS\u003c/i\u003e values showed that the sorption process of Cu (II) or Pb (II) was spontaneous (Δ\u003ci\u003eG\u003c/i\u003e \u0026lt; 0), was endothermic (Δ\u003ci\u003eH\u003c/i\u003e \u0026lt; 0), and had decreased entropy (Δ\u003ci\u003eS\u003c/i\u003e \u0026lt; 0). HNO\u003csub\u003e3\u003c/sub\u003e (0.1 M) could be a good desorbent in the recovery of metal ions after adsorption and regeneration of the adsorbent.","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"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