The Adsorptive Ability of TiO2-Pillared Montmorillonite for Lead (II) Cationic and its Leaching

Yuan Cheng; Wei Miao Xie; Xuan Hui Zhang; Dan Chen; Guo Hua Li

doi:10.4028/www.scientific.net/MSF.743-744.469

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HomeMaterials Science ForumMaterials Science Forum Vols. 743-744The Adsorptive Ability of TiO2-Pillared...

The Adsorptive Ability of TiO₂-Pillared Montmorillonite for Lead (II) Cationic and its Leaching

Abstract:

In this thesis, TiO2-pillared montmorillonite was prepared by a sol-gel method. The sample was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the crystal phase of the sample is composed of anatase and montmorillonite. The microstructure of the sample is still layered structure. Furthermore, the XRD results indicate that the interlayer distance of crystal plane (001) of the montmorillonite left-shift obviously. In other words, its interlayer distance increases obviously. The adsorptive ability of the sample was tested with industry wastewater, which containing Pb2+. The results indicate that the adsorptive rate of sample for lead () cationic is 99.9%. After analyzing with the interlayer space, it indicated that the increasing of the interlayer space is good for the adsorptive ability. And the adsorptive ability reached a maximum when the interlayer space was 1.339 nm. The TiO2-pillared montmorillonite absorbed Pb2+ saturatedly was impregnated into nitric acid solution to dissolve the lead cationic. The results show that the concentration of the nitric acid is higher, the leaching rate of the lead cationic is higher. And it reached a maximum when the concentration of the nitric acid is 2 mol/L after leaching for 20 min.Introduction

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Materials Science Forum (Volumes 743-744)

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469-474

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https://doi.org/10.4028/www.scientific.net/MSF.743-744.469

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Online since:

January 2013

Authors:

Yuan Cheng, Wei Miao Xie, Xuan Hui Zhang, Dan Chen, Guo Hua Li

Keywords:

Adsorptive Ability, Leaching Rate, Lead Cathode, TiO₂-Pillared Montmorillonite

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