|
KMID : 0382420010270010063
|
|
Korean Journal of Environmental Health Society
2001 Volume.27 No. 1 p.63 ~ p.68
|
|
|
Nitrate Removal by FeCl3-Treated Activated Carbon
|
|
Cheong Kyung-Hoon
Jung Oh-Jin
Choi Hyoung-Il
|
|
|
Abstract
|
|
|
|
A laboratory experiment was performed to investigate the nitrate removal using FeCl₃-treated activated carbon. Iron chloride(III) was coated onto the surface of activated carbon. The removal efficiency of nitrate was increased with increasing of FeCl₃concentration when FeCl₃was used for coating material. About 22~26 mg of Fe per unit g of activated carbon was adsorbed. The nitrate removal was not affected by the pH under the experiment range of pH, but the pH value in solution decrease to 3.5~4.0 after reaction. The removal efficiency of nitrate was increased with increasing of dosage of adsorbents. Ammonia was not detected and the Fe concentration as low as 0.22 mg/l was desorbed from the adsorbents. The adsorbents was regenerated using KCl solution, and recovery was 76.6% at 1 M of KCl. The adsorption of nitrate by FeCl₃-treated activated carbon followed the Freundlich isotherm equation and the Freundlich constant, 1/n, was 0.346. These results showed that the FeCl₃-treated activated carbon could serve as the basis of a useful nitrate removal.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|