抄録
The adsorption of dyes (direct, acidic, basic, reactive and disperse) on Itaya zeolite consisting mainly of clinoptilolite and mordenite was investigated.
The adsorption isotherms were found to be approximately expressed by the Freundlich equation. The order of adsorption selectivity was basic dye>acidic dye>other dyes.
The Itaya zeolite surface-treated by the disperse dye and binder has less adsorbing power to nitrogen than the untreated zeolite, but has about the same hydrogen and ammonium ion exchange capacity. Therefore, it is useful for soil for gardening, an ornament rock for cleaning of water in an aquarium and for building materials (for example, breathing walls).
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