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本文报道了在海水及水溶液中麦饭石对Ｃｄ（Ⅱ）的吸附特性，以及Ｃｄ（Ⅱ）浓度、溶液的ｐＨ值对吸附过程的影响，并在海水及水溶液中麦饭石对Ｃｄ（Ⅱ）的饱和吸附量进行了测定。结果表明，当溶液的温度、ｐＨ值一定时，麦饭石对Ｃｄ（Ⅱ）的吸附量随Ｃｄ（Ⅱ）平衡浓度的变化规律服从Ｆｒｅｕｎｄｉｃｈ方程。百分吸附量随ｐＨ变化曲线呈正Ｓ型。在ｐＨ值为８．０的海水及水溶液中，麦饭石对Ｃｄ（Ⅱ）的饱和吸附量分别为４．２８ｍｇ／８和５．３０ｍｇ／ｇ。并对吸附机理进行了探讨。
In this paper, the adsorption characteristics of Cd (Ⅱ) on Maifan stone in seawater and aqueous solution and the effect of Cd (Ⅱ) concentration and solution pH on the adsorption process were studied. ) Of the saturated adsorption was measured. The results show that when the temperature and pH of the solution are constant, the adsorption capacity of the Maifan stone to Cd (Ⅱ) follows the Freundich equation with the equilibrium concentration of Cd (Ⅱ). The percentage adsorption showed a positive S with pH. The saturated adsorption capacity of medical stone to Cd (Ⅱ) was 4.28mg / 8 and 5.30mg / g respectively in the seawater and the aqueous solution of pH8.0. The adsorption mechanism was also discussed.