Recycling container for the collection and temporary storage of mercury contaminated wastes in dental facilities
View Patent ↗The present invention is directed to a container for the collection and temporary storage of amalgams and other mercury wastes. The container can include a hollow body with air-tight lid, and one or more mercury sorbents contained in a filter bag. The filter bag covers the inside surface of the hollow body and has holes that allow air exchange between the air in the hollow body and the sorbents. As air exchange occurs, mercury vapors released from dental wastes binds to the mercury binding materials. A self-closing door was made on the lid, which automatically closes after each waste disposal.
1. A container for collection and temporary storage of mercury contaminated dental waste comprising:
(a) a hollow body having a closed bottom and an air-tight lid, wherein said air-tight lid having an opening that is sealable by a self-closing door; and
(b) at least one mercury-binding material, wherein said mercury-binding material is housed in a filter bag covering the inside surface of said hollow body, and said mercury-binding material is communicative with inside of said body.
2. The container of claim 1 , wherein said mercury-binding material comprises a mercury-binding sorbent.
3. The container of claim 2 , wherein said mercury-binding sorbent is selected from the group consisting of:
(a) active carbon;
(b) sulfur impregnated activated carbon
(c) metal oxide sorbent;
(d) sodium sulfide particles;
(e) basic silicate sorbents;
(f) modified silicate sorbents;
(g) a flyash;
(h) a silica-titania nanocomposite;
(i) a polymer sorbent; and
(j) a combination thereof.
4. The container of claim 1 , wherein said self-closing door opens under pressure and automatically closes after releasing said pressure.
5. The container of claim 1 , wherein said self-closing door is operatively connected to the lid using:
(a) a spring;
(b) a spring hinge; or
(c) a flexible material.
6. The container of claim 1 , wherein said filter bag is quilted with packets filled with said mercury-binding material.
7. The container of claim 1 , wherein said filter bag is attached to the inside surface of said body by:
(a) chemical adhesion;
(b) mechanical means; or
(c) heat fusion.
8. The container of claim 1 , wherein said filter bag is a mesh bag, with holes sized to hold said mercury-binding material and to allow air-exchange between said mercury-binding material and the internal air said hollow body.
9. The container of claim 1 , wherein said filter bag is a perforated, with holes sized to hold said mercury-binding material while allowing air-exchange between said mercury-binding material and the internal air said hollow body.
10. The container of claim 7 , wherein said mechanical means comprises velcro, zipper, button or hook/hole assembly.
11. The container of claim 1 , wherein said hollow body is made of a gas impermeable material.
12. The container of claim 11 , wherein said gas impermeable materials is selected from the group consisting of:
(a) tempered glass;
(b) plastic;
(c) fiber glass; and
(d) metal or metal alloys.
13. The container of claim 1 , wherein said air-tight lid is made of a flexible material.
14. The container of claim 1 , wherein said opening is rectangular.
15. The container of claim 13 , wherein said self-closing door is cut from the lid.
16. The container of claim 1 , wherein a sealing material is applied to the edge of the air-tight lid and the hollow body.
17. The container of claim 16 , wherein said sealing material comprises latex and rubber.
18. The container of claim 1 , wherein sealing material is applied on the periphery of the self-closing door.
19. The container of claim 18 , wherein sealing material comprises latex and rubber.