(浙江師范大學化學系, 金華 321004)
摘 要: 研究了N503(N, N二仲辛基乙酰胺)萃淋樹脂在氫溴酸、硫酸-溴化鈉體系中對鎘的吸附性能。 探討了N503萃淋樹脂在氫溴酸體系中吸附鎘的動力學和機理, 發(fā)現(xiàn)N503萃淋樹脂吸附鎘的反應按擬一級反應進行,并符合Freundlich等溫吸附式。 由斜率法和飽和容量法確定N503萃淋樹脂吸附鎘的反應， 鎘以CdBr-3形式吸附在N503萃淋樹脂上， 鎘與N503的摩爾比為1∶3。
關鍵字: 關鍵詞: 鎘 吸附 N503 萃淋樹脂
（Department of Chemistry, Zhejiang Normal University,Jinhua 321004, P. R. China）
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.
Key words: cadmium N503 levextrel resin adsorption
