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546352 
Journal Article 
Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling 
Freitas, OMM; Martins, RJE; Delerue-Matos, CM; Boaventura, RAR 
2008 
Yes 
Journal of Hazardous Materials
ISSN: 0304-3894
EISSN: 1873-3336 
153 
1-2 
1-2 
English 
17935878 
Specific marine macro algae species abundant at the Portuguese coast (Laminaria hyperborea, Bifurcaria bifurcata, Sargassum muticum and Fucus spiralis) were shown to be effective for removing toxic metals (Cd(II), Zn(II) and Pb(II)) from aqueous solutions. The initial metal concentrations in solution were about 75-100mgL super(-) super(1). The observed biosorption capacities for cadmium, zinc and lead ions were in the ranges of 23.9-39.5, 18.6-32.0 and 32.3-50.4mgg super(-) super(1), respectively. Kinetic studies revealed that the metal uptake rate was rather fast, with 75% of the total amount occurring in the first 10min for all algal species. Experimental data were well fitted by a pseudo-second order rate equation. The contribution of internal diffusion mechanism was significant only to the initial biosorption stage. Results indicate that all the studied macro algae species can provide an efficient and cost-effective technology for eliminating heavy metals from industrial effluents. 
Article Subject Terms: Algae; Bioremediation; Cadmium; Capacity; Coastal zone; Coasts; Data processing; Diffusion; Economics; Heavy; metals; Industrial effluents; Industrial wastes; Ions; Kinetics; Lead; Mathematical models; Metals; Model Studies; Pollutant removal; Pollution effects; Seaweeds; Technology; Zinc; biosorption; heavy; metals; Article Taxonomic Terms: Bifurcaria bifurcata; Fucus spiralis; Laminaria hyperborea; Sargassum muticum; Article Geographic Terms:; ANE, Portugal; Q5 01505 Prevention and control; P 1000 MARINE POLLUTION; SW 3030; Effects of pollution; K 03320 Cell Biology; X 24360 Metals; Q4 27770; Algae; EE 40 Water Pollution: Monitoring, Control & Remediation 
NAAQS
• ISA-Lead (2013 Final Project Page)
     Considered
     Eco/Welfare
          Aquatic Effects
          Terrestrial Effects