Removal of Metal Ions From Aqueous Solutions Using Sawdust Modified with Citric Acid or Tartaric Acid
- Removal of Metal Ions From Aqueous Solutions Using Sawdust Modified with Citric Acid or Tartaric Acid
- 양중석; 박영태; 백기태; 최재영
- adsorption; citric acid; heavy metals; sawdust; tartaric acid
- Issue Date
- Separation science and technology
- VOL 45, NO 12-13, 1963-1974
- This study describes the adsorption of heavy metal ions (Cd(II),
Cu(II), Ni(II), Pb(II), and Zn(II)) from aqueous solutions by pine
(Pinus densiflora) sawdust modified with citric acid (CA) or tartaric
acid (TA). The optimal parameters, contact time, and pH were
determined and the adsorption isotherms were obtained. The
removal efficiency of the modified sawdust increased as the pH
increased. The maximum adsorption capacity of sawdust modified
with CA or TA was 14 to 57 times higher than that of unmodified
sawdust. These results indicate that either CA or TA can be used
to enhance the removal of heavy metals using sawdust.
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