Carboxymethylated bacterial cellulose: an environmentally friendly adsorbent for lead removal from water

Rossi, Ezequiel; Montoya Rojo, Úrsula; Cerrutti, Patricia; Foresti, María Laura; Errea, María Inés

artículo de publicación periódica.page.titleprefix
Carboxymethylated bacterial cellulose: an environmentally friendly adsorbent for lead removal from water

dc.contributor.author	Rossi, Ezequiel
dc.contributor.author	Montoya Rojo, Úrsula
dc.contributor.author	Cerrutti, Patricia
dc.contributor.author	Foresti, María Laura
dc.contributor.author	Errea, María Inés
dc.date.accessioned	2019-07-16T14:45:35Z
dc.date.available	2019-07-16T14:45:35Z
dc.date.issued	2018-12
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.identifier.issn	2213-3437
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1654
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jece.2018.10.055
dc.relation	info:eu-repo/grantAgreement/ITBA/ITBACyT/44/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/grantAgreement/CONICET/PIP/11220150100660CO/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/grantAgreement/ANPCyT/PICT/2016-0843/AR. Ciudad Autónoma de Buenos Aires
dc.subject	ADSORCION	es
dc.subject	INTERCAMBIO DE IONES	es
dc.subject	AGUA	es
dc.subject	CELULOSA BACTERIANA	es
dc.subject	TRATAMIENTO DEL AGUA	es
dc.title	Carboxymethylated bacterial cellulose: an environmentally friendly adsorbent for lead removal from water	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Rossi, Ezequiel. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Rossi, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Montoya Rojo, Úrsula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Cerrutti, Patricia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Foresti, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Foresti, María Laura. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Errea, María Inés. Instituto Tecnológico de Buenos Aires; Argentina.