Fertilizer compositions and methods of making the same
View Patent ↗Fertilizer compositions are provided, where a fertilizer composition includes: an inner portion including a nitrogen containing material; and an outer portion covering the inner portion, the outer portion including a release agent (e.g. HTC, BR).
1. A fertilizer composition, comprising: an inner portion comprising a nitrogen containing compound; and an outer portion coating the inner portion, the outer portion containing (a) a release agent comprising a layered double hydroxide and (b) a release agent coating additive, wherein the outer portion comprises 5 wt. % to not greater than 30 wt. % of the fertilizer composition.
2. The fertilizer composition of claim 1 , wherein the nitrogen containing compound is urea.
3. The fertilizer composition of claim 1 , wherein the layered double hydroxide is selected from the group consisting of hydrotalcite, hydrocalumite, and combinations thereof.
4. The fertilizer composition of claim 1 , wherein the outer portion is selected from the group consisting of: of a binder, a filler, an additive; and combinations thereof.
5. The fertilizer composition of claim 1 , wherein the outer layer comprises hydrotalcite and wax.
6. A fertilizer composition, comprising: an inner portion comprising urea; and an outer portion coating the inner portion, the outer portion containing a release agent comprising a hydrocalumite, wherein the outer portion comprises 10 wt. % to not greater than 20 wt. % of the fertilizer composition.
7. The composition of claim 6 , wherein the outer portion further comprises a binder.
8. The composition of claim 7 , wherein the binder further comprises a wax in an amount not exceeding 5 wt. % of the fertilizer composition.
9. The fertilizer composition of claim 1 , wherein the release agent coating additive is selected from the group consisting of: a wax, a sugar polymer, carboxylic acid, polyelectrolytes, polymers, Portland cement, and combinations thereof.
10. The fertilizer composition of claim 1 , wherein the release agent comprises from 10 wt. % to 15 wt. % of the fertilizer composition and the release agent coating additive comprises from 2 wt. % to 3 wt. % of the total fertilizer composition.
11. The fertilizer composition of claim 1 , wherein the outer portion is configured to provide a controlled release fertilizer.
12. A fertilizer composition, comprising: an inner portion comprising urea; and an outer portion encasing the inner portion, the outer portion containing a release agent including a Bayer Process byproduct selected from the group consisting of: bauxite residue and layered double hydroxides; wherein the release agent is present in an amount of 10 wt. % to not greater than 20 wt. % of the total fertilizer composition.
13. The fertilizer composition of claim 12 , wherein the outer portion comprises 5 wt. % to 30 wt. % of the total weight of the composition.
14. The fertilizer composition of claim 12 , wherein the outer portion comprises 10 wt. % to 20 wt. % of the total weight of the composition.
15. The fertilizer composition of claim 12 , wherein the release agent is bauxite residue.
16. The fertilizer composition of claim 12 , wherein the release agent is hydrotalcite.
17. The fertilizer composition of claim 12 , wherein the release agent is configured to slow the release of urea into a growing medium.