PlumX Metrics
Embed PlumX Metrics

Adsorption of metal and uranyl ions onto amidoximated Pinus densiflora bark

Wood Science and Technology, ISSN: 0043-7719, Vol: 44, Issue: 2, Page: 283-299
2010
  • 19
    Citations
  • 0
    Usage
  • 12
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    19
    • Citation Indexes
      19
  • Captures
    12

Article Description

Pine (Pinus densiflora) bark was chemically modified by grafting with acrylonitrile (AN) through Fenton reaction and conversion of the cyano group to an amidoxime group by reaction with hydroxylamine. Treatments of pine bark with 160 mM HO at 40°C yielded *70% grafting in 6-h reaction. After alkali hydrolysis of amidoximated pine bark (AOPB), its adsorption capacity (qe) for copper ions was largely increased from 0.5 to 1.8 mmol/g. Adsorption of the hydrolyzed AOPB (HAOPB) followed the pseudo-second-order kinetic model. Among the metal ions tested, the order of adsorption capacity (qe) predicted by the kinetic model at equilibrium time was Hg>UO>Cd>Cu > Zn>Ni. The adsorption process was pH-dependent, and the adsorption equilibrium was observed in the pH range of 6-7 for all the metal ions. Even though pine bark is a good adsorbent for Hg2+ and UO ions, it had a poor affinity for the other ions tested. It was obviously found that HAOPB had very high adsorption abilities for heavy metal and uranyl ions. © Springer-Verlag 2009.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know