Method for enhancing soil growth using bio-char

Patent metadata

Field	Value
Publication number	US-9493380-B2
Application number	US-201214385986-A
Country	US
Kind code	B2
Filing date	May 29, 2012
Priority date	Jun 6, 2011
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A method is described for rendering char from a biomass fractionator apparatus (BMF char) suitable for addition to soil in high concentrations, the method relying on multiple processes comprising removing detrimental hydrocarbons from BMF char, removing adsorbed gases from BMF char, introducing microorganisms to the BMF char, and adjusting. soil pH.

First claim

The invention claimed is:

1. A method for the production of an agent for enhancing soil, comprising:
subjecting a biomass feedstock to a treatment comprising sequential or concurrent ramps of temperature and pressure to produce at least one volatile component released from the biomass feedstock during the treatment and a nonvolatile component comprising BMF char;
rendering a surface of the BMF char hydrophilic; and
thereafter exposing the BMF char to microorganisms.

2. The method of claim 1 , wherein the biomass feedstock is ground to a diameter between about 0.001 inch and about 1 inch.

3. The method of claim 1 , further comprising dispensing the ground biomass particles into thin sheets whose total thickness is a multiple of the ground biomass particle diameter before subjecting the ground biomass particles to sequential or concurrent ramps of temperature and pressure shocks wherein the multiple is any real number in the range of 1 to 30.

4. The method of claim 1 , wherein the biomass feedstock is used to produce different BMF chars based on a composition of the biomass feedstock.

5. The method of claim 1 , wherein the pressure shocks vary in magnitude from 0.2 MPa to 10 GPa, wherein an admixture of pressure shocks of differing magnitudes is combined with pressure shocks applied over a range of times.

6. The method of claim 1 , wherein the temperature ramp includes a sufficiently high temperature to create a nonvolatile carbonaceous material within the biomass feedstock.

7. The method of claim 1 , wherein the pressure shocks increase thermal conductivity of formed nonvolatile carbonaceous material within the biomass feedstock.

8. The method of claim 1 , wherein the temperature ramps and pressure shocks are conducted in an atmosphere containing a supercritical fluid.

9. The method of claim 1 , wherein the pressure shocks decrease the effective density of the biomass feedstock.

10. The method of claim 1 , wherein a pH of the BMF char is controlled via pH adjustment agents.

11. The method of claim 1 , wherein the BMF char is activated.

12. The method of claim 1 , wherein the surface of the BMF char is rendered hydrophilic by removing adsorbed gas within char pores.

13. The method of claim 12 , wherein removal of adsorbed gas is carried out by immersing BMF biochar in heated water.

14. The method of claim 13 , wherein the heated water comprises inorganic nutrients.

15. The method of claim 1 , wherein the surface of the BMF char is rendered hydrophilic by high temperature removal of adsorbed hydrocarbons.

16. The method of claim 1 or 12 , wherein microorganisms include members of at least one of fungi, bacteria or archaea.

17. The method of claim 16 , wherein fungi include one or more members of the phyla Glomeromycota.

18. The method of claim 1 , wherein the BMF char contains glomalin structures.

19. The method of claim 1 , further comprising introducing inorganic nutrients into the BMF biochar.

20. The method of claim 1 , further comprising adding the BMF char to soil after exposing the BMF char to microorganisms.

21. A method of enhancing soil health, comprising:
providing a BMF biochar made according to claim 1 ; and
adding the BMF biochar to soil.

22. The method of claim 21 , wherein a pH of the BMF char is modified prior to the addition of BMF char to the soil.

Assignees

• Cheiky Michael C
• Jarand Mark L
• Sills Ronald A
• Cool Planet Energy Systems Inc

Inventors

• Cheiky Michael C
• Jarand Mark L
• Sills Ronald A

Classifications

• C05G3/80

  Soil conditioners · CPC title

• C10B57/02

  Multi-step carbonising or coking processes · CPC title

• Y10S71/903

  Soil conditioner · CPC title

• C05F11/00 Primary

  Other organic fertilisers · CPC title

• C09K17/04

  applied in a physical form other than a solution or a grout, e.g. as granules or gases · CPC title