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Decontamination of synthetic solutions containing heavy metals using chemically modified sawdusts bearing polyacrylic acid chains

Abstract

New materials containing carboxylate groups have been synthesized by grafting polyacrylic acid onto sawdust. These new adsorbents were subjected to continuous extraction of different metal ions using packed columns to determine their maximum binding capacities. They exhibit binding capacities 15–40 times higher than unmodified sawdusts for removal of Cu2+, Ni2+, and Cd2+ chosen as representative heavy metal ions. Cation desorption and adsorbent regeneration could be effected by elution with a diluted HCl solution; water as an eluent has no effect on metal desorption.

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Correspondence to Philippe Gérardin.

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Geay, M., Marchetti, V., Clément, A. et al. Decontamination of synthetic solutions containing heavy metals using chemically modified sawdusts bearing polyacrylic acid chains. J Wood Sci 46, 331–333 (2000). https://doi.org/10.1007/BF00766226

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Key words

  • Acrylic acid
  • Chemical modification of wood
  • Ion-exchange resin
  • Heavy metal
  • Sawdust