摘要
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。
Abstract The adsorptive characteristics of cadmium by Mai Fan Stone was stud-ied in sea water and aqueous solution. The effect of pH values and cadmium con-centrations on adsorptive activity was examined,and the adsorptive saturation density was tested.The adsorptive density of cadmium by Mai Fan Stone in sea water and aqueous solution,according to Freundlich equation,increased with the increas in cadmium equilibrium concentration when temperature and pH values are
出处
《大连水产学院学报》
CSCD
1994年第1期62-68,共7页
Journal of Dalian Fisheries University
