Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.provenance | CONICET | - |
| dc.creator | Dima, Jimena Bernadette | - |
| dc.creator | Sequeiros, Cynthia | - |
| dc.creator | Zaritzky, Noemi Elisabet | - |
| dc.date | 2017-10-23T19:57:39Z | - |
| dc.date | 2017-10-23T19:57:39Z | - |
| dc.date | 2015-07 | - |
| dc.date | 2017-07-27T12:47:57Z | - |
| dc.date.accessioned | 2019-04-29T15:44:29Z | - |
| dc.date.available | 2019-04-29T15:44:29Z | - |
| dc.date.issued | 2015-07 | - |
| dc.identifier | Dima, Jimena Bernadette; Sequeiros, Cynthia; Zaritzky, Noemi Elisabet; Hexavalent chromium removal in contaminated water using reticulated chitosan micro/nanoparticles from seafood processing wastes; Elsevier; Chemosphere; 141; 7-2015; 100-111 | - |
| dc.identifier | 0045-6535 | - |
| dc.identifier | http://hdl.handle.net/11336/26949 | - |
| dc.identifier | CONICET Digital | - |
| dc.identifier | CONICET | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/300811 | - |
| dc.description | Chitosan particles (CH) were obtained from seafood processing wastes (shrimp shells) and physicochem- ically characterized; deacetylation degree of CH was measured by Infrared Spectroscopy (FTIR) and potentiometric titration; polymer molecular weight was determined by intrinsic viscosity measure- ments. Reticulated micro/nanoparticles of chitosan (MCH) with an average diameter close to 100 nm were synthesized by ionic gelation of chitosan using tripolyphosphate (TPP), and characterized by SEM, size distribution and Zeta-potential. Detoxification capacities of CH and MCH were tested analyzing the removal of hexavalent chromium Cr(VI) from contaminated water, at different initial chromium con- centrations. The effect of pH on adsorption capacity of CH and MCH was experimentally determined and analyzed considering the Cr(VI) stable complexes (anions) formed, the presence of protonated groups in chitosan particles and the addition of the reticulating agent (TPP). Chitosan crosslinking was necessary to adsorb Cr(VI) at pH < 2 due to the instability of CH particles in acid media. Langmuir isotherm described better than Freundlich and Temkin equations the equilibrium adsorption data. Pseudo-second order rate provided the best fitting to the kinetic data in comparison to pseudo-first order and Elovich equations. Chemical analysis to determine the oxidation state of the adsorbed Cr, showed that Cr(VI) was adsorbed on CH particles without further reduction; in contrast Cr(VI) removed from the solution was reduced and bound to the MCH as Cr(III). The reduction of toxic Cr(VI) to the less or nontoxic Cr(III) by the reticulated chitosan micro/nanoparticles can be considered a very efficient detoxification technique for the treatment of Cr(VI) contaminated water. | - |
| dc.description | Fil: Dima, Jimena Bernadette. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina | - |
| dc.description | Fil: Sequeiros, Cynthia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina | - |
| dc.description | Fil: Zaritzky, Noemi Elisabet. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; Argentina. Universidad Nacional de La Plata. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | Elsevier | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653515006499 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.chemosphere.2015.06.030 | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.source.uri | http://hdl.handle.net/11336/26949 | - |
| dc.subject | Seafood waste | - |
| dc.subject | Chitosan micro and nanoparticles | - |
| dc.subject | Hexavalent chromium removal | - |
| dc.subject | Equilibrium adsorption isotherms | - |
| dc.subject | Adsorption kinetics | - |
| dc.subject | Water treatment | - |
| dc.subject | Bioprocesamiento Tecnológico, Biocatálisis, Fermentación | - |
| dc.subject | Biotecnología Industrial | - |
| dc.subject | INGENIERÍAS Y TECNOLOGÍAS | - |
| dc.title | Hexavalent chromium removal in contaminated water using reticulated chitosan micro/nanoparticles from seafood processing wastes | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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