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Citation: Chen Zhaoping, Luo Laitao, Li Yongxiu, Yin Jinghai, Xu Ang, Li Fengyi. Effect of HCl Treatment on the Surface Structure of Sepiolite and Its Adsorptive Property for Pb(Ⅱ) and Cd(Ⅱ)[J]. Chinese Journal of Applied Chemistry, ;1999, 16(5): 9-12. shu

Effect of HCl Treatment on the Surface Structure of Sepiolite and Its Adsorptive Property for Pb(Ⅱ) and Cd(Ⅱ)

1.
Institute of Applied Chemistry, Nanchang University, Nanchang 330047

Received Date: 9 December 1998
Available Online: 14 July 1999
Fund Project: 国家自然科学基金(29863002) (29863002)江西自然科学基金(982002) (982002)

The effects of HCl acid concentration and treatment time on the removed magnesium ratio, surface and pore structures of sepiolite have been investigated. The results show that with removed magnesium ratio of 36%, the treated sepiolite has a maximum surface area of 554 4 m²/g, therfore a better adsorability towards Pb²⁺ and Cd²⁺. The adsorptive behavior can be related to the Langmuir isothermal adsorption equation.
- sepiolite,
- ion adsorption,
- removed magnesium ratio,
- surface area
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