CAJ | 학술논문

用FeCl_3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2 h,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(200-1 000mg/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0.1 mol/L NaOH中再生效果好;吸附呈Freundlich模型.
용FeCl_3개성해포석,병연구철개성해포석(IMS)결구급성능,결과표명:철개성해포석(IMS)결구발생료변화,흡부성능증강;대pH유완충성;재pH위8.3좌우,흡부2 h,흡부량수제초시농도증대이증대;기대저농도제(10～100mg/L)적흡부수온도적영향불대,대고농도제(200-1 000mg/L)적흡부칙수온도승고이승고;IMS량증가,제제효솔증대,기분배계수K_D선증가후감소;재0.1 mol/L NaOH중재생효과호;흡부정Freundlich모형.
Iron modified sepiolite (IMS) has been prepared by using modified FeCl_3 and studying its structure and property. The data shows: the structure of IMS has changed and its adsorption capacity has been improved, and has buffering effect on pH. When the pH is around 8.3, and adsorption time=2 h, the adsorption capacity increases with the increase of original concentration of antimony. Temperature has little effect on the adsorption capacity of antimony with low concentration (10-100 mg/L). When the antimony concentration is high (200-1 000 mg/L), the adsorption capacity increases with the increase of temperature. The antimony removal rate increases with the increase of IMS concentration. Its distribution coefficient K_D is increased firstly and then reduced. The regeneration effect is good in 0.1 mol/L NaOH, and the adsorptive process accords with Freundlich model.