Copper removal from aqueous solution by marine green alga Ulva reticulata

The batch removal of copper (II) ions from aqueous solution under different experimental conditions using Ulva reticulata was investigated in this study. The copper (II) uptake was dependent on initial pH and initial copper concentration, with pH 5.5 being the optimum value. The equilibrium data wer...

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Autores principales:	Vijayaraghavan,Kuppusamy, Raj Jegan,Joseph, Palanivelu,Kandasamy, Velan,Manickam
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2004
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582004000100009
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spelling	oai:scielo:S0717-345820040001000092004-09-09Copper removal from aqueous solution by marine green alga Ulva reticulataVijayaraghavan,KuppusamyRaj Jegan,JosephPalanivelu,KandasamyVelan,Manickam The batch removal of copper (II) ions from aqueous solution under different experimental conditions using Ulva reticulata was investigated in this study. The copper (II) uptake was dependent on initial pH and initial copper concentration, with pH 5.5 being the optimum value. The equilibrium data were fitted using Langmuir and Freundlich isotherm model, with the maximum copper (II) uptake of 74.63 mg/g determined at a pH of 5.5. The Freundlich model regression resulted in high correlation coefficients and the model parameters were largely dependent on initial solution pH. At various initial copper (II) concentrations (250 to 1000 mg/L), sorption equilibrium was attained between 30 and 120 min. The copper (II) uptake by U. reticulata was best described by Pseudo-second order rate model and the rate constant, the initial sorption rate and the equilibrium sorption capacity were also reported. The elution efficiency for copper-desorption from U. reticulata was determined for 0.1 M HCl, H2SO4, HNO3 and CaCl2 at various Solid-to-Liquid ratios (S/L). The solution CaCl2 (0.1 M) in HCl at pH 3 was chosen to be the most suitable copper-desorbing agent. The biomass was also employed in three sorption-desorption cycles with 0.1 M CaCl2 (in HCl, pH 3) as the elutant.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.7 n.1 20042004-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582004000100009en
institution	Scielo Chile
collection	Scielo Chile
language	English
description	The batch removal of copper (II) ions from aqueous solution under different experimental conditions using Ulva reticulata was investigated in this study. The copper (II) uptake was dependent on initial pH and initial copper concentration, with pH 5.5 being the optimum value. The equilibrium data were fitted using Langmuir and Freundlich isotherm model, with the maximum copper (II) uptake of 74.63 mg/g determined at a pH of 5.5. The Freundlich model regression resulted in high correlation coefficients and the model parameters were largely dependent on initial solution pH. At various initial copper (II) concentrations (250 to 1000 mg/L), sorption equilibrium was attained between 30 and 120 min. The copper (II) uptake by U. reticulata was best described by Pseudo-second order rate model and the rate constant, the initial sorption rate and the equilibrium sorption capacity were also reported. The elution efficiency for copper-desorption from U. reticulata was determined for 0.1 M HCl, H2SO4, HNO3 and CaCl2 at various Solid-to-Liquid ratios (S/L). The solution CaCl2 (0.1 M) in HCl at pH 3 was chosen to be the most suitable copper-desorbing agent. The biomass was also employed in three sorption-desorption cycles with 0.1 M CaCl2 (in HCl, pH 3) as the elutant.
author	Vijayaraghavan,Kuppusamy Raj Jegan,Joseph Palanivelu,Kandasamy Velan,Manickam
spellingShingle	Vijayaraghavan,Kuppusamy Raj Jegan,Joseph Palanivelu,Kandasamy Velan,Manickam Copper removal from aqueous solution by marine green alga Ulva reticulata
author_facet	Vijayaraghavan,Kuppusamy Raj Jegan,Joseph Palanivelu,Kandasamy Velan,Manickam
author_sort	Vijayaraghavan,Kuppusamy
title	Copper removal from aqueous solution by marine green alga Ulva reticulata
title_short	Copper removal from aqueous solution by marine green alga Ulva reticulata
title_full	Copper removal from aqueous solution by marine green alga Ulva reticulata
title_fullStr	Copper removal from aqueous solution by marine green alga Ulva reticulata
title_full_unstemmed	Copper removal from aqueous solution by marine green alga Ulva reticulata
title_sort	copper removal from aqueous solution by marine green alga ulva reticulata
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582004000100009
work_keys_str_mv	AT vijayaraghavankuppusamy copperremovalfromaqueoussolutionbymarinegreenalgaulvareticulata AT rajjeganjoseph copperremovalfromaqueoussolutionbymarinegreenalgaulvareticulata AT palanivelukandasamy copperremovalfromaqueoussolutionbymarinegreenalgaulvareticulata AT velanmanickam copperremovalfromaqueoussolutionbymarinegreenalgaulvareticulata
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Copper removal from aqueous solution by marine green alga Ulva reticulata

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