Kinetics modelling of biosorption by algal biomass from binary metal solutions using batch contactors

• Type: Article in International Scientific Journal
• Date: 2008

Authors

V´ıtor J.P. Vilar (Author) FEUP; Cidalia M.S. Botelho (Author) FEUP; Rui A.R. Boaventura (Author) FEUP

Journal

Title: Biochemical Engineering Journal

Vol. 38

Pages: 319-325

ISSN: 1369-703X

Publisher: Elsevier

Indexing

ISI Proceedings

ISI Web of Knowledge - 9 Citations

ISI Web of Science

Scopus - 12 Citations

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-004-0VZ

DOI: 10.1016/j.bej.2007.07.020

Abstract (EN): The biosorption from four binary metal solutions, Pb2+/Cu2+, Pb2+/Cd2+, Pb2+/Zn2+ and Cd2+/Zn2+, onto algae Gelidium, algal waste and composite material, at pH 5.3 and 20 degrees C, were studied in batch adsorber. A mass transfer model based on a one-dimensional intraparticle diffusion rate, combined with a binary Langmuir isotherm, was applied to describe the overall biosorption rate of binary metal solutions mixture in flat seaweed biomass. A good correlation has been found between mass transfer model and experimental data for all systems. Model equations were solved numerically yielding the metal ions homogeneous diffusion coefficients. The biosorbents showed a preference for sorbing Pb over Cd, Zn and Cu even for low lead initial concentrations. Cu and Ph show a similar competition for the binding sites, although a higher uptake was found for copper ions, due to the higher initial copper concentration.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7