| 摘要 |
A preparing method of a functional zeolite with excellent removal efficiency of heavy metals is provided, and a functional zeolite that is capable of exhibiting a high removal efficiency of heavy metals prepared by the method is provided, and a method for removing heavy metals from a heavy metal-containing medium using the functional zeolite for removing the heavy metals is provided. A preparing method of a zeolite for removing heavy metals comprises the steps of: (i) diluting a lipophilic binding agent with an organic solvent; (ii) adding an aqueous chelate agent solution and an emulsifier to the lipophilic binding agent solution to mix the aqueous chelate agent solution and the emulsifier with the lipophilic binding agent solution; and (iii) adding a zeolite to the mixture and agitating the mixture and the zeolite to coat the zeolite with the chelate agent. The preparing method further comprises the step of filtering and drying the chelate agent-coated zeolite. The lipophilic binding agent is at least one selected from the group consisting of polyurethane, epoxy, and silicone. The organic solvent is a thinner. The chelate agent is at least one selected from the group consisting of iminodiacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, and fulvic acid. The preparing method comprises mixing the lipophilic binding agent solution, the aqueous chelate agent solution, and the emulsifier at a volume ratio of 5:94.9:0.1 to 10:89.9:0.1. |
