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X-ray powder diffraction (XRPD) analysis demonstrated that the main montmorillonite component of Unye bentonite was more effective in the Pb 2+ , Cu 2+ , Ni 2+ , Co 2+ , Zn 2+ , Al 3+ and Fe 3+ fixation processes in the interlayer space of the mineral than the nonclay fractions. All cation-exchanged bentonites experienced slight shifts in non-lattice...
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