×

Biochars and biochar treatment processes

  • US 10,252,951 B2
  • Filed: 10/01/2015
  • Issued: 04/09/2019
  • Est. Priority Date: 06/06/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for treating a porous carbonaceous material having a plurality of pores for use for facilitating plant growth, the method comprising the steps of:

  • placing the porous carbonaceous material in a vessel capable of sustaining pressure change, where the vessel has an original pressure;

    adding a treating liquid to the vessel at the vessel'"'"'s original pressure, where the treating liquid is water; and

    varying the pressure in the vessel where such pressure in the vessel is varied for a predetermined period of at least 60 seconds before ceasing such pressure variation and returning the pressure in the vessel to its original pressure or to atmospheric pressure without removing the porous carbonaceous material or treating liquid from the vessel, wherein the pressure in the vessel is changed using a mechanism other than exclusively through the use of steam, and where at least a portion of the treating liquid is forced into the pores of the porous carbonaceous materials when the pressure in the vessel is varied to wash the pores of the porous carbonaceous material and remove phytotoxic compounds from the pores of the porous carbonaceous material.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×