Removal of metals from aqueous solutions by sawdust modified by citric acid and tartaric acid
- Removal of metals from aqueous solutions by sawdust modified by citric acid and tartaric acid
- 양중석; 이주영; 박영태; 백기태; 최재영
- adsorption; Citric acid; Heavy metals; Sawdust; Tartaric acid
- Issue Date
- Sixteenth symposium on separation science and technology for energy applications
- This study describes the adsorption of heavy metal ions (Cd, Cu, Ni, Pb, and Zn)
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
adsorption isotherms were obtained. The removal efficiency of the modified sawdust
increased as the pH increased. At pH 4.5, the removal efficiency of the sawdust modified
with CA was 74–98% and that for TA was 88–99%. 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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- KIST Publication > Conference Paper
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