N503萃淋树脂吸附镉的研究

来源期刊：中国有色金属学报1998年第3期

论文作者：陈建荣 林建军 吴小华 袁欣星 周静芬

文章页码：507 - 510

关键词：镉； 吸附； N503； 萃淋树脂

Key words：cadmium； N503 levextrel resin； adsorption

摘    要：研究了N503(N, N-二仲辛基乙酰胺)萃淋树脂在氢溴酸、硫酸-溴化钠体系中对镉的吸附性能。 探讨了N503萃淋树脂在氢溴酸体系中吸附镉的动力学和机理, 发现N503萃淋树脂吸附镉的反应按拟一级反应进行,并符合Freundlich等温吸附式。 由斜率法和饱和容量法确定N503萃淋树脂吸附镉的反应， 镉以CdBr^-₃形式吸附在N503萃淋树脂上， 镉与N503的摩尔比为1∶3。

Abstract: The adsorptivity of N503(N, N-di(sec-octyl) acetamide) levextrel resin to cadmium in HBr and NaBr-H₂SO₄ media has been studied. The adsorption kinetics and adsorption mechanism for N503 levextrel resin to cadmium have been also discussed. The results show that the adsorption of the N503 levextrel resin to cadmium is carried out in pseudo first order reaction and follows Freundlich isothermal adsorption equation. By the use of slope ratio method and saturation method it has been revealed that cadmium is adsorped by N503 levextrel resin in the form of CdBr^-₃. The mole ratio of cadmium with N503 is 1∶3.