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シラスゼオライトの合成とその利用（第3報） : シラスゼオライトによる金属イオン吸着 SYNTHESES OF SHIRASU-ZEOLITES AND THEIR UTILIZATIONS (Reports 3) : Adsorption of Metal Ions by SHIRASU-Zeolites 植村, 寿子 UEMURA, Hisako 染川, 賢一 SOMEKAWA, Kenichi 隈元, 実忠 KUMAMOTO, Sanetada 573 Using Na-A, Na-X and Na-P type zeolites obtained from SHIRASU, the adsorptions of several divalent metal cations were investigated. It is an interesting point that the products from the short crystalization times had high adsorptional abilities in comparison with the zeolite - contents measured by the X-ray method. The adsorption quantities (meq/g) and orders by each zeolites were as follows ; Na-A; Cu^<2+>(3.8) ＞ Cd^<2+> ＞ Mg^<2+>, Zn^<2+> ＞ Mn^<2+> ＞ Co^<2+> ＞ Ni^<2+>(1.4) Na-X; Cu^<2+>(2.3) ＞ Cd^<2+> ＞ Mg^<2+> ＞Zn^<2+>, Ni^<2+> ＞ Co^<2+> ＞ Mn^<2+>(1.5) Na-P; Pb^<2+>(4.4) ＞ Cu^<2+> ＞ Cd^<2+> ＞Zn^<2+> ＞ Mn^<2+> ＞ Co^<2+> ＞ Mg^<2+> ＞Ni^<2+>(1.0) The Na-A ordinarily had the larger capacities than others. Their adsorption isothermers were confirmed to be consisted with Langmuir's one and the adsorption abilities were considered to be mainly influenced by radius of hydrated metal ions and by the sodium contents of zeolites. The influences of co-existing anions and metal cations and the pH conditions of the medium for the adsorptions were also examined. departmental bulletin paper 鹿児島大学 Kagoshima University 1982-10 VoR application/pdf 鹿児島大学工学部研究報告 24 145 151 The research reports of the Faculty of Engineering, Kagoshima University 0451212X AN00040363 https://ir.kagoshima-u.ac.jp/record/2249/files/AN00040363_v24_p145-151.pdf http://hdl.handle.net/10232/12474 https://ir.kagoshima-u.ac.jp/records/2249 jpn open access