Alkylcellulose and salt compositions for dust control applications
A method of reducing dust generation from an aggregate surface is described. The method includes applying a dust suppression compound to the aggregate surface. The dust suppression compound may be made from an aqueous mixture of an alkylcellulose compound and a halogen containing salt.
1. A method of reducing dust generation from an aggregate surface, the method comprising applying a dust suppression composition to the aggregate surface, wherein the dust suppression composition comprises an aqueous mixture of an alkylcellulose compound and a halogen containing salt and has a viscosity of about 100 cps to about 1000 cps at 68° F., wherein the alkylcellulose compound comprises about 0.05 wt. % to about 0.50 wt. % of the dust suppression composition, and wherein the halogen containing salt comprises about 25 wt. % to about 40 wt. % of the dust suppression composition and the halogen containing salt is a hygroscopic salt.
2. The method of claim 1 , wherein the alkylcellulose compound comprises hydroxyethylcellulose.
3. The method of claim 1 , wherein the alkylcellulose compound comprises carboxymethylcellulose.
4. The method of claim 1 , wherein the halogen containing salt comprises a chloride anion.
5. The method of claim 1 , wherein the halogen containing salt comprises an alkali earth metal cation.
6. The method of claim 1 , wherein the halogen containing salt is selected from the group consisting of magnesium chloride and calcium chloride.
7. The method of claim 1 , wherein the aggregate surface comprises soil.
8. The method of claim 1 , wherein the aggregate surface comprises an unpaved roadway.
9. A method of preventing the generation of dust from particulate material at an soil surface, the method comprising: transporting a dust suppression composition to the soil surface; and spraying the dust suppression composition on the particulate material, wherein the dust suppression composition comprises an aqueous mixture of an alkyl cellulose compound and a halogen containing salt and has a viscosity of about 100 cps to about 1000 cps at 68° F., wherein the alkylcellulose compound comprises about 0.05 wt. % to about 0.50 wt. % of the dust suppression composition, and wherein the halogen containing salt comprises about 25 wt. % to about 40 wt. % of the dust suppression composition and the halogen containing salt is a hygroscopic salt.
10. The method of claim 9 , wherein the dust suppression composition is transported to the soil surface by a vehicle comprising a fluid storage tank to hold the dust suppression composition.
11. The method of claim 10 , wherein the vehicle also comprises a spraying unit to spray the dust suppression composition.
12. The method of claim 9 , wherein the soil surface comprises an unpaved road surface.
13. The method of claim 9 , wherein the alkylcellulose compound comprises hydroxyethylcellulose or carboxymethylcellulose.
14. The method of claim 9 , wherein the halogen containing salt is selected from the group consisting of magnesium chloride and calcium chloride.
15. The method of claim 1 , wherein the dust suppression composition is applied to the aggregate surface at a coverage level from about 0.05 gal/ft 2 to about 0.2 gal/ft 2 .
16. The method of claim 9 , wherein the dust suppression composition is sprayed on the particulate material at a coverage level from about 0.05 gal/ft 2 to about 0.2 gal/ft 2 .