Abstract
A new method is proposed to treat attapulgite by freeze-dying and heating process. The photos of Scanning Electron Microscopy (SEM) on treated attapulgite show higher dispersion properties. TG and DSC curves of raw attapulgite and treated attapulgite indicated the contents of adsorption water, zeolite water and complexing water in the treated attapulgite are less than that of raw attapulgite. The test results of Nickel adsorption indicated the adsorption mechanism could be better described by pseudo-second order model and the thermodynamic curve of adsorption could be described with Langmuir model.
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