Physicochemical characterisation of the ubiquitous bracken fern as useful biomaterial for preconcentration of heavy metals
Physicochemical characterisation of the ubiquitous bracken fern as useful biomaterial for preconcentration of heavy metals
Batch experiments with dry bracken fern have been done to determine cadmium and lead sequestering capacity of this biomaterial. Biomass characterisation was done by infrared spectroscopy and potentiometric analysis. The effect of pH of the metal containing solution, contact time and initial metal concentration has been studied, together with the acid-base properties of the biomaterial. Results obtained have been analysed using mathematical and modelling techniques. Effect of pH on metal sequestration has been correlated with observed acid-base properties of the natural substrate. Kinetic data analysis provided relevant information about metal sequestration rate, showing important differences between lead and Cadmium, Maximum uptake was found to be the same for both metals 0.410 mmol/g. This value was,also clearly correlated to the number of acidic groups determined for this material which was found to be 0.432 mmol of acidic groups per gram of fern. Results obtained indicate that acidic groups are the functional groups responsible of the sequestration of metal ions and that bracken fern is a promising material for metal preconcentration.
Bracken fern, Cadmium(II), Lead(II) Preconcentration
1561-1567
Barriada, Jose L.
dd613ea4-adeb-47b0-aae4-87a3e200a9d7
Caridad, Sergio
c853ca83-f03e-47dd-8c66-952166125f06
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Herrero, Roberto
083bf72e-e314-4edb-86a0-9ba61f35a816
Sastre de Vicente, Manuel E.
8b7b6889-35e4-45aa-adb7-c8124dad5938
February 2009
Barriada, Jose L.
dd613ea4-adeb-47b0-aae4-87a3e200a9d7
Caridad, Sergio
c853ca83-f03e-47dd-8c66-952166125f06
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Herrero, Roberto
083bf72e-e314-4edb-86a0-9ba61f35a816
Sastre de Vicente, Manuel E.
8b7b6889-35e4-45aa-adb7-c8124dad5938
Barriada, Jose L., Caridad, Sergio, Lodeiro, Pablo, Herrero, Roberto and Sastre de Vicente, Manuel E.
(2009)
Physicochemical characterisation of the ubiquitous bracken fern as useful biomaterial for preconcentration of heavy metals.
Bioresource Technology, 100 (4), .
(doi:10.1016/j.biortech.2008.09.027).
Abstract
Batch experiments with dry bracken fern have been done to determine cadmium and lead sequestering capacity of this biomaterial. Biomass characterisation was done by infrared spectroscopy and potentiometric analysis. The effect of pH of the metal containing solution, contact time and initial metal concentration has been studied, together with the acid-base properties of the biomaterial. Results obtained have been analysed using mathematical and modelling techniques. Effect of pH on metal sequestration has been correlated with observed acid-base properties of the natural substrate. Kinetic data analysis provided relevant information about metal sequestration rate, showing important differences between lead and Cadmium, Maximum uptake was found to be the same for both metals 0.410 mmol/g. This value was,also clearly correlated to the number of acidic groups determined for this material which was found to be 0.432 mmol of acidic groups per gram of fern. Results obtained indicate that acidic groups are the functional groups responsible of the sequestration of metal ions and that bracken fern is a promising material for metal preconcentration.
This record has no associated files available for download.
More information
Published date: February 2009
Keywords:
Bracken fern, Cadmium(II), Lead(II) Preconcentration
Organisations:
Ocean Biochemistry & Ecosystems
Identifiers
Local EPrints ID: 355091
URI: http://eprints.soton.ac.uk/id/eprint/355091
ISSN: 0960-8524
PURE UUID: ba4f6bfd-81c4-455f-912e-093c86256fc3
Catalogue record
Date deposited: 30 Jul 2013 08:58
Last modified: 14 Mar 2024 14:28
Export record
Altmetrics
Contributors
Author:
Jose L. Barriada
Author:
Sergio Caridad
Author:
Pablo Lodeiro
Author:
Roberto Herrero
Author:
Manuel E. Sastre de Vicente
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