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KMID : 1024520040130010089
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Journal of the Environmental Sciences
2004 Volume.13 No. 1 p.89 ~ p.97
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Effect of antibacterial activity on the elution of silver ions from A-type zeolite supporting silver ions
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Lee Mu-Kang
Shin Hyun-Moo
Lim Kyung-Cheun
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Abstract
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An author has been known that A-type zeolite supported with silver ions has excellent antibacterial activity. However, it is no research of concern in the antibacterial activity of eluted silver ions. This study tested the elution of silver ions from A-type zeolite silver ions in deionized distilled water and NaNO aqueous solution. In NaNO aqueous solution of 74mM to 588mM, it was found that the concentration of silver ions and electric conductivity increased with the increasing concentration of sodium ions, and equilibrated at 15 min, and the ion exchange equilibrium coefficient, k, is 1.310-3/. However, deionized distilled water is not equilibrated to pass 6 months. A-type zeolite sodium ions showed no antibacterial activity. It was found that antibacterial activity was exhibited even at the concentration of 10 nM of eluted silver ions, and E-coli died with the incorporation of 2.43108/ Ag ion/cell. antibacterial activity of A-type zeolite silver ions were mainly attributed to hydroxyl radical.
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KEYWORD
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Antibacterial activity, Silver ion, E-coli, Activated oxygen
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