This disquisition prepared the sorbent by coal through chemistry oxidation and machine chemistry with the use of the lignite, to research the molding of the coal powder and the sorption of the molding sorbent which adsorb Cr6+ from solution.
The coal powder together with FeCl3 can increase the adsorption capability through the grind with ball. When the weight ratio of FeCl3 and coal is one to ten, the sorbent of the coal powder is better after 20min ball grind, washing with acid, washing with water and ...