Journal
JOURNAL OF WOOD SCIENCE
Volume 46, Issue 4, Pages 331-333Publisher
SPRINGER-VERLAG TOKYO
DOI: 10.1007/BF00766226
Keywords
acrylic acid; chemical modification of wood; ion-exchange resin; heavy metal; sawdust
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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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