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dc.contributor.authorRossi, Ezequiel
dc.contributor.authorMontoya Rojo, Úrsula
dc.contributor.authorCerrutti, Patricia
dc.contributor.authorForesti, María Laura
dc.contributor.authorErrea, María Inés
dc.date.accessioned2019-07-16T14:45:35Z
dc.date.available2019-07-16T14:45:35Z
dc.date.issued2018-12
dc.identifier.issn2213-3437
dc.identifier.urihttp://ri.itba.edu.ar/handle/123456789/1654
dc.description.abstract"Carboxymethylated bacterial cellulose (CMBC) was synthesized under controlled reaction condition to provide a material with a degree of substitution (DS) that guarantees that the characteristic water insolubility of cellulose is retained (DS = 0.17). The CMBC synthesized was fully characterized by conductometric titration, infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermogravimetric analysis and solubility assays. The suitability of the produced CMBC for lead removal from water was evaluated. Experimental isotherm data were fitted to different models of sorption isotherms: Langmuir, Freundlich, Dubinin-Radushkevich, and Frumkin, with Langmuir equation resulting in the best fit. Kinetic data were also adjusted to pseudo-first-order and pseudo-second-order models and results undoubtedly showed that the pseudosecond-order kinetic equation was the one that most appropriately described the lead adsorption of CMBC, indicating that lead is adsorbed on CMBC predominantly by chemical interaction. The breakthrough curve was fitted to different models: Bohart-Adams, Clark and Modified Dose-Response, being the Bohart-Adams equation the one that gave the best fit. Desorption studies were carried out in order to know the technical feasibility of the reuse of CMBC. Almost 96% of the retained lead was eluted in just 20 mL, and the CMBC lifetime was over 50 adsorption/desorption cycles. Overall, results obtained suggest that the CMBC herein synthesized may result in an alternative economic and environmentally friendly lead adsorbent for water treatment."en
dc.language.isoenen
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jece.2018.10.055
dc.relationinfo:eu-repo/grantAgreement/ITBA/ITBACyT/44/AR. Ciudad Autónoma de Buenos Aires
dc.relationinfo:eu-repo/grantAgreement/CONICET/PIP/11220150100660CO/AR. Ciudad Autónoma de Buenos Aires
dc.relationinfo:eu-repo/grantAgreement/FONCyT/PICT/2016-0843/AR. Ciudad Autónoma de Buenos Aires
dc.subjectADSORCIONes
dc.subjectINTERCAMBIO DE IONESes
dc.subjectAGUAes
dc.subjectCARBOXIMETILCELULOSAes
dc.subjectTRATAMIENTO DEL AGUAes
dc.titleCarboxymethylated bacterial cellulose: an environmentally friendly adsorbent for lead removal from wateren
dc.typeArtículos de Publicaciones Periódicases
dc.typeinfo:eu-repo/semantics/acceptedVersion
itba.description.filiationFil: Rossi, Ezequiel. Instituto Tecnológico de Buenos Aires; Argentina.es
itba.description.filiationFil: Rossi, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es
itba.description.filiationFil: Montoya Rojo, Úrsula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es
itba.description.filiationFil: Cerrutti, Patricia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.es
itba.description.filiationFil: Foresti, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es
itba.description.filiationFil: Foresti, María Laura. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.es
itba.description.filiationFil: Errea, María Inés. Instituto Tecnológico de Buenos Aires; Argentina.es


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