PH值对改性膨润土吸附Cr3+、Cr6+的影响

Using organic modifiers of organic molecules, ions, the polymer instead of hydration come into the bentonite interlayering cation to covalent bond, ionic bond, bond dipole, as well as with the combination of van der Waals forces to form the organic bentonite or organic expansion Run-soil complex.In this writing,Montmorillonite was modified by treating with octadecyl trimethyl ammonium chloride after grinding purification and Na-activatio- n,and then the heavy metal sorbent was available．Then through static experiment study the of the modified Montmorillonite’s absorption of ．The results of thesis indicate that the sorption of Cr3+ and Cr6+of montmorillonite changed from 75％and 79％to 95％and 97％under the same condition. At the same time，The optimum PH for the adsorption areindicated.