Paper Title:
Lead and Gold Removal Using Sugar-Beet Pectin Gels with and without Immobilized Fucus Vesiculosus
  Abstract

Sugar-beet pectin gels are a novel material with applications in heavy and precious metal removal and biomass immobilization which are similar to those of alginate. This paper presents the experimental results of the kinetics of Pb(II) and Au(III) batch removal with these gels, with and without immobilized biomass of the brown algae Fucus vesiculosus. The evolution of the metal concentration, solution pH and Ca2+ liberation was determined. The biomass was characterized before and after the metal removal using SEM-EDX, FESEM, FETEM, XRD and FTIR techniques. The Pb(II) removal followed a typical biosorption kinetics with a final equilibrium metal concentration. The immobilized algae had different biosorptive behaviour than both the original sugar-beet pectin gels and the free biomass. There was no Au(III) removal with the pectin gels without algae. In the case of the immobilized biomass, the Au(III) recovery occurred in two stages, where the biosorption was followed by the reduction of the Au(III) to Au(0) due to the presence of the own algae. The Au(0) precipitated preferably on the surface of the algal biomass and in the form of colloidal gold in the solution and entrapped within the pectin gel matrix.

  Info
Periodical
Advanced Materials Research (Volumes 20-21)
Edited by
Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher
Pages
599-602
DOI
10.4028/www.scientific.net/AMR.20-21.599
Citation
Y. N. Mata, E. Torres, M.L. Blázquez, A. Ballester, F. González, J.A. Muñoz, "Lead and Gold Removal Using Sugar-Beet Pectin Gels with and without Immobilized Fucus Vesiculosus", Advanced Materials Research, Vols. 20-21, pp. 599-602, 2007
Online since
July 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: S.J. Kleinübing, Eric Guibal, Meuris Gurgel Carlos da Silva
Abstract:Fundamental investigation on adsorption of Cu2+ and Ni2+ ions on Sargassum sp. was performed in fixed-bed column. The Langmuir isotherm...
589
Authors: F. Beolchini, C. Pennesi, B. Testaferri, C. Totti, I. De Michelis, Francesco Vegliò
Abstract:This paper deals with arsenic and lead biosorption by different waste biomasses coming from the marine environment. Shoreline seaweeds and...
597
Authors: Zhi Zhang, Jing Ming Han, Ming Kai Cai, Gong Duan Fan, Jing Luo, Xin Wan, Chao Liu
Chapter 4: Material Removal Processes and Machines
Abstract:Three ultrasonic transmitters of single power of 50W, frequency of 20~50 kHz,60~100 kHz and 100~150 kHz were used to remove bloom algae of...
1852
Authors: Li Ming Wang, Ye Luo, Jing Li
Session 1: Materials for Environmental Protection and Energy Application
Abstract:With the rapid development and versatile applications of nanotechnology, a large quantity of nanoparticles (NPs) has been released into the...
81
Authors: Shui Ping Chang, Yi Chao Lee, Chih Sheng Lee, Nien Hsin Kao
Chapter 1: Environmental Materials, Chemistry, Biology Technology and Processes
Abstract:The Cladophora and Spirogyra algae examined in this study belong to the Chlorophyta division. Macro filamentous algae, which are widespread...
123