| Abstract |
| Bacteria attachment on zeolite with different cation exchange capacity (CEC) was investigated, and zeolite with low CEC (LC-ZL), zeolite with medium CEC (MC-ZL), and zeolite with high CEC (HC-ZL) were used. Column experiments were performed varying column length (10-15 cm), pH (4-8), and ionic strength (0-80 mM). As the increase of the column length, removal percentage was increased but sticking efficiency was not dependent on the column length. The increase of pH decreased both removal percentage and sticking efficiency. Bacteria attachment onto zeolite was increased as the increase of the ionic strength from 0 to 20 mM but it was decreased above 20 mM of the ionic strength. At long (20 cm) or short (10 cm) column length, the differences of removal percentage of LC-ZL, MC-ZL, and HC-ZL were not observed. The bacteria attachment onto MC-ZL and HC-ZL was not significantly different at high ionic strength. Solution chemistry should be considered when the selection of appropriate zeolite for the removal of bacteria. |
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| Key Words |
| Bacteria, Cation exchange capacity, Zeolite |
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