The University of Southampton
University of Southampton Institutional Repository

Biosorption of Cadmium by Fucus spiralis

Biosorption of Cadmium by Fucus spiralis
Biosorption of Cadmium by Fucus spiralis
Cadmium biosorption properties of nonliving, dried brown marine macroalga Fucus spiralis from Galician coast (northwest Spain) have been investigated. The biosorption capacity of the alga strongly depends on solution pH; the uptake is almost negligible at pH <= 2 and reaches a plateau at around pH 4.0. Cadmium biosorption kinetics by F. spiralis is relatively fast, with 90\% of total adsorption taking place in less than one hour. A pseudo second order mechanism has been proved to be able to predict the kinetic behaviour of the biosorption process. The effect of initial cadmium ion concentration, alga dose, solution pH, and temperature on the biosorption kinetics has been studied. The Langmuir, Freundlich, Langmuir-Freundlich, and Toth isotherms were used to fit the experimental data and to find out the adsorption parameters. Acid-base properties of the alga have been studied potentiometrically in order to calculate the number of acidic groups and the apparent pK value by using Katchalsky model. The pK obtained is comparable with typical values associated to the ionization of carboxyl groups of alginates, supporting the implication of these groups in the biosorption process.
algae, biosorption, biotechnology, cadmium
1448-2517
180-187
Cordero, Bruno
2fb5d2f0-88b4-45fb-a66f-987dbf3aa73c
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Herrero, Roberto
083bf72e-e314-4edb-86a0-9ba61f35a816
Sastre de Vicente, Manuel Esteban
4b52b4aa-8a1f-4876-b642-101d32f06a4c
Cordero, Bruno
2fb5d2f0-88b4-45fb-a66f-987dbf3aa73c
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Herrero, Roberto
083bf72e-e314-4edb-86a0-9ba61f35a816
Sastre de Vicente, Manuel Esteban
4b52b4aa-8a1f-4876-b642-101d32f06a4c

Cordero, Bruno, Lodeiro, Pablo, Herrero, Roberto and Sastre de Vicente, Manuel Esteban (2004) Biosorption of Cadmium by Fucus spiralis. Environmental Chemistry, 1 (3), 180-187. (doi:10.1071/EN04039).

Record type: Article

Abstract

Cadmium biosorption properties of nonliving, dried brown marine macroalga Fucus spiralis from Galician coast (northwest Spain) have been investigated. The biosorption capacity of the alga strongly depends on solution pH; the uptake is almost negligible at pH <= 2 and reaches a plateau at around pH 4.0. Cadmium biosorption kinetics by F. spiralis is relatively fast, with 90\% of total adsorption taking place in less than one hour. A pseudo second order mechanism has been proved to be able to predict the kinetic behaviour of the biosorption process. The effect of initial cadmium ion concentration, alga dose, solution pH, and temperature on the biosorption kinetics has been studied. The Langmuir, Freundlich, Langmuir-Freundlich, and Toth isotherms were used to fit the experimental data and to find out the adsorption parameters. Acid-base properties of the alga have been studied potentiometrically in order to calculate the number of acidic groups and the apparent pK value by using Katchalsky model. The pK obtained is comparable with typical values associated to the ionization of carboxyl groups of alginates, supporting the implication of these groups in the biosorption process.

Full text not available from this repository.

More information

Published date: 2004
Keywords: algae, biosorption, biotechnology, cadmium
Organisations: Ocean Biochemistry & Ecosystems

Identifiers

Local EPrints ID: 355103
URI: http://eprints.soton.ac.uk/id/eprint/355103
ISSN: 1448-2517
PURE UUID: c2d17973-6c4b-4afe-a49f-0c0c9b2e3f6e

Catalogue record

Date deposited: 30 Jul 2013 14:18
Last modified: 16 Jul 2019 21:27

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×