| 摘要 |
PROBLEM TO BE SOLVED: To provide an activated carbon-based adsorbent which can efficiently remove residual chlorine in tap water, volatile organic compounds such as trihalomethane, heavy metals, elutes silver ions gradually into water, and enables a stable gradual release of silver ions from the very early stage of passing water for a long period of time, especially when applied to a water purifier. SOLUTION: Activated carbon is treated with hydrochloric acid to adsorb chloride ions at 0.1-2 mass fraction% to activated carbon, and then mixed with a silver or silver compound-containing liquid to be impregnated by silver of a silver compound. The adsorbent is made by mixing the silver-impregnated activated carbon and silver-unimpregnated activated carbon. COPYRIGHT: (C)2007,JPO&INPIT
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