Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica

Biosorption of heavy metals can be an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this paper uranium biosorption by protonated, Ca-pretreated and non-pretreated Cystoseira indica algae biomass was investigated in a batch system. The results of the ki...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hassan Khani,Mohammad, Reza Keshtkar,Ali, Meysami,Behrouz, Firouz Zarea,Mohammad, Jalali,Reza
Lenguaje:	Spanish / Castilian
Publicado:	Pontificia Universidad Católica de Valparaíso 2006
Materias:	biosorption Cystoseira indica equilibrium kinetic marine algae uranium
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000200003
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-34582006000200003
record_format	dspace
spelling	oai:scielo:S0717-345820060002000032006-12-10Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indicaHassan Khani,MohammadReza Keshtkar,AliMeysami,BehrouzFirouz Zarea,MohammadJalali,Reza biosorption Cystoseira indica equilibrium kinetic marine algae uranium Biosorption of heavy metals can be an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this paper uranium biosorption by protonated, Ca-pretreated and non-pretreated Cystoseira indica algae biomass was investigated in a batch system. The results of the kinetic studies showed that the sorption of uranium on protonated and non-pretreated biomass followed pseudo-second order kinetics. The effect of pH on the equilibrium uranium sorption capacity of Cystoseira indica exhibited that highest uptake occurred at pH 4 at a solution with 350 mg/l uranium concentration. At various initial uranium concentrations from 50 to 1000 mg/l, batch sorption equilibrium at 30ºC was reached within 3 hrs and the sorption isotherms were interpreted in terms of the Langmuir and Freundlich models. Equilibrium data fitted very well to Langmuir model for all studied forms of Cystoseira indica algae. The Freundlich isotherm cannot fit as well as the Langmuir model the equilibrium data of protonated and non-pretreated Cystoseira indica algae. The maximum uranium adsorption capacity on the Ca-pretreated, protonated and non-pretreated Cystoseira indica algae predicted by Langmuir isotherm at pH 4 and 30ºC was 454.5, 322.58 and 224.67 mg/g respectively.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.9 n.2 20062006-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000200003es
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	biosorption Cystoseira indica equilibrium kinetic marine algae uranium
spellingShingle	biosorption Cystoseira indica equilibrium kinetic marine algae uranium Hassan Khani,Mohammad Reza Keshtkar,Ali Meysami,Behrouz Firouz Zarea,Mohammad Jalali,Reza Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica
description	Biosorption of heavy metals can be an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this paper uranium biosorption by protonated, Ca-pretreated and non-pretreated Cystoseira indica algae biomass was investigated in a batch system. The results of the kinetic studies showed that the sorption of uranium on protonated and non-pretreated biomass followed pseudo-second order kinetics. The effect of pH on the equilibrium uranium sorption capacity of Cystoseira indica exhibited that highest uptake occurred at pH 4 at a solution with 350 mg/l uranium concentration. At various initial uranium concentrations from 50 to 1000 mg/l, batch sorption equilibrium at 30ºC was reached within 3 hrs and the sorption isotherms were interpreted in terms of the Langmuir and Freundlich models. Equilibrium data fitted very well to Langmuir model for all studied forms of Cystoseira indica algae. The Freundlich isotherm cannot fit as well as the Langmuir model the equilibrium data of protonated and non-pretreated Cystoseira indica algae. The maximum uranium adsorption capacity on the Ca-pretreated, protonated and non-pretreated Cystoseira indica algae predicted by Langmuir isotherm at pH 4 and 30ºC was 454.5, 322.58 and 224.67 mg/g respectively.
author	Hassan Khani,Mohammad Reza Keshtkar,Ali Meysami,Behrouz Firouz Zarea,Mohammad Jalali,Reza
author_facet	Hassan Khani,Mohammad Reza Keshtkar,Ali Meysami,Behrouz Firouz Zarea,Mohammad Jalali,Reza
author_sort	Hassan Khani,Mohammad
title	Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica
title_short	Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica
title_full	Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica
title_fullStr	Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica
title_full_unstemmed	Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica
title_sort	biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae cystoseira indica
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000200003
work_keys_str_mv	AT hassankhanimohammad biosorptionofuraniumfromaqueoussolutionsbynonlivingbiomassofmarinealgaecystoseiraindica AT rezakeshtkarali biosorptionofuraniumfromaqueoussolutionsbynonlivingbiomassofmarinealgaecystoseiraindica AT meysamibehrouz biosorptionofuraniumfromaqueoussolutionsbynonlivingbiomassofmarinealgaecystoseiraindica AT firouzzareamohammad biosorptionofuraniumfromaqueoussolutionsbynonlivingbiomassofmarinealgaecystoseiraindica AT jalalireza biosorptionofuraniumfromaqueoussolutionsbynonlivingbiomassofmarinealgaecystoseiraindica
_version_	1718441741748535296

Biosorption of uranium from aqueous solutions by nonliving biomass of marinealgae Cystoseira indica

Ejemplares similares