摘要：

用FeCl₃改性海泡石,并研究铁改性海泡石(IMS)结构及性能,结果表明:铁改性海泡石(IMS)结构发生了变化,吸附性能增强;对pH有缓冲性;在pH为8.3左右,吸附2h,吸附量随锑初始浓度增大而增大;其对低浓度锑(10～100mg/L)的吸附受温度的影响不大,对高浓度锑(200～1000mg/L)的吸附则随温度升高而升高;IMS量增加,除锑效率增大,其分配系数K_D先增加后减小;在0.1mol/LNaOH中再生效果好;吸附呈Freundlich模型。

关键词: 海泡石, 含锑废水, 吸附

Abstract:

Iron modified sepiolite（IMS） has been prepared by using modified FeCl3 and studying its structure andproperty.The data shows： the structure of IMS has changed and its adsorption capacity has been improved,andhas buffering effect on pH.When the pH is around 8.3,and adsorption time=2 h,the adsorption capacity increaseswith the increase of original concentration of antimony.Temperature has little effect on the adsorption capacityof antimony with low concentration （10-100 mg/L）.When the antimony concentration is high （200-1 000mg/L）,the adsorption capacity increases with the increase of temperature.The antimony removal rate increaseswith the increase of IMS concentration.Its distribution coefficient K_D is increased firstly and then reduced.Theregeneration effect is good in 0.1 mol/L NaOH,and the adsorptive process accords with Freundlich model.

Key words: sepiolite, antimony-containing wastewater, adsorption

中图分类号: 

• X703