Erosion control substrate and methods of use
An erosion control slurry is disclosed. The slurry includes water and a substrate, wherein the substrate comprises: mulch at a weight of x; bentonite clay at a weight of about 0.25x to about 0.495x; and cellulosic water dispersible polymer or starch at a weight of about 0.0025x to about 0.125x. Also disclosed are a substrate that can be mixed with liquid to provide an erosion control slurry, and methods of controlling or reducing erosion.
1. A slurry comprising water and a substrate, wherein the substrate comprises:
mulch at a weight of x;
bentonite clay at a weight of about 0.25x to about 0.495x, wherein said bentonite clay is selected from the group consisting of sodium bentonite, calcium bentonite, and combinations thereof; and
cellulosic water dispersible polymer or starch at a weight of about 0.0025x to about 0.125x.
2. The slurry according to claim 1 , comprising one or more members selected from the group consisting of fertilizer, seed, and soil adjuvant.
3. The slurry according to claim 1 , wherein the mulch comprises wood mulch, straw, and/or manure.
4. The slurry according to claim 3 , wherein the mulch comprises wood mulch.
5. The slurry according to claim 1 , comprising the cellulosic water dispersible polymer, wherein the cellulosic water dispersible polymer comprises one or more members selected from the group consisting of methylcellulose, ethyl methyl cellulose, hydroxyethyl cellulose (HEC), hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose (HPMC), ethyl hydroxyethyl cellulose and carboxymethyl cellulose.
6. The slurry according to claim 1 , comprising hydroxypropyl methyl cellulose (HPMC).
7. The slurry according to claim 1 , comprising surface-treated hydroxypropyl methyl cellulose (HPMC).
8. The slurry according to claim 7 , wherein said surface-treated HPMC has been surface-treated with glyoxal.
9. The slurry according to claim 1 , wherein the bentonite clay is present at a weight of about 0.25x.
10. The slurry according to claim 9 , wherein the mulch comprises wood mulch.
11. The slurry according to claim 1 , wherein the weight of the substrate does not exceed 2.5x.
12. A substrate that can be mixed with liquid to provide an erosion control slurry, the substrate comprising:
mulch at a weight of x;
bentonite clay at a weight of about 0.25x to about 0.495x, wherein said bentonite clay is selected from the group consisting of sodium bentonite, calcium bentonite, and combinations thereof; and
cellulosic water dispersible polymer or starch at a weight of about 0.0025x to about 0.125x.
13. The substrate according to claim 12 , wherein the substrate is dry.
14. The substrate according to claim 12 , wherein the mulch comprises wood mulch.
15. The substrate according to claim 12 , comprising the cellulosic water dispersible polymer, wherein the cellulosic water dispersible polymer comprises one or more members selected from the group consisting of methylcellulose, ethyl methyl cellulose, hydroxyethyl cellulose (HEC), hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose (HPMC), ethyl hydroxyethyl cellulose and carboxymethyl cellulose.
16. The substrate according to claim 12 , wherein the weight of the substrate does not exceed 2.5x.
17. A method of controlling or reducing erosion of a surface, the method comprising:
preparing a slurry by mixing, with water:
mulch at a weight of x;
bentonite clay at a weight of about 0.25x to about 0.495x, wherein said bentonite clay is selected from the group consisting of sodium bentonite, calcium bentonite, and combinations thereof; and
cellulosic water dispersible polymer or starch at a weight of about 0.0025x to about 0.125x, and
applying said slurry on the surface.
18. The method according to claim 17 , wherein the surface comprises soil.