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Applied Biochemistry and Biotechnology

, Volume 128, Issue 1, pp 23–32 | Cite as

Continuous biotreatment of copper-concentrated solutions by biosorption with Sargassum sp.

  • Francisca Pessôa de França
  • Flávia Pinto Padilha
  • Antonio Carlos Augusto da Costa
Original Research Articles

Abstract

Seaweed Sargassum sp. biomass proved to be useful for the recovery of ionic copper from highly concentrated solutions simulating effluents from semiconductor production. In the case of solutions containing copper in the form of chloride, sulfate, and nitrate salts, the best pH for the recovery of copper was 4.5. It was observed that copper biosorption from copper nitrate solutions was higher than the recovery of copper from copperchloride or copper sulfate solutions. The continuous system used was constituted of four column reactors filled with the biomass of Sargassum sp. and showed high operational stability. The biomass of Sargassum sp. in the reactors was gradually saturated from the bottom to the top of each column reactor. The biomass of Sargassum sp. in the first column saturated first, followed by a gradual saturation of the remaining columns owing to preconcentration performed by the biomass in the first column. The biomass of Sargassum in the bioreactors completely biosorbed the ionic copper contained in 63 L of copper sulfate solution, 72 L of copper chloride solution, and 72 L of copper nitrate solution, all the solutions containing copper at 500 mg/L. Effluents produced after biosorption presented copper concentrations <0.5 mg/L.

Index Entries

Biosorption Semiconductor effluents Sargassum fixed-bed reactors 

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Copyright information

© Humana Press Inc 2006

Authors and Affiliations

  • Francisca Pessôa de França
    • 1
  • Flávia Pinto Padilha
    • 1
  • Antonio Carlos Augusto da Costa
    • 2
  1. 1.Universidade Federal do Rio de Janeiro, Centro de Technologia, Escola de Química, Departamento de Engenharia Bioquímica, Ilha do FundãoCidade UniversitáriaRio de JaneiroBrasil
  2. 2.Departmento de Technologia de Processos BioquímicosUniversidade do Estado do Rie de Janeiro, Centro de Tecnologia e Ciências, Instituto de QuímicaRio de JaneiroBrasil

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