IP Library › Granted Patent US 12,611,649
Granted Patent B2
US 12,611,649 · App. 18/543,750 · Granted Apr 28, 2026

Biogenic activated carbon and methods of making and using same

Inventors: James A. Mennell (Brighton, UT); Daniel J. Despen (Oakdale, MN)
Assignee: Carbon Technology Holdings, LLC
B01J20/22B01J20/02B01J20/0225B01J20/0288B01J20/041B01J20/043B01J20/046B01J20/06B01J20/10B01J20/12B01J20/20B01J20/28009B01J20/28066B01J20/3078B82Y30/00B82Y40/00C01B32/184C01B32/30C01B32/336C01B32/39C10B39/02C10B53/02C10B57/005C10B57/10B01J2220/485Y02C20/40Y02E60/36Y02P20/145
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Quick Facts
Patent No.
US 12,611,649
App. No.
18/543,750
Granted
Apr 28, 2026
Kind
B2
Abstract

Biogenic activated carbon compositions disclosed herein comprise at least 55 wt % carbon, some of which may be present as graphene, and have high surface areas, such as Iodine Numbers of greater than 2000. Some embodiments provide biogenic activated carbon that is responsive to a magnetic field. A continuous process for producing biogenic activated carbon comprises countercurrently contacting, by mechanical means, a feedstock with a vapor stream comprising an activation agent including water and/or carbon dioxide; removing vapor from the reaction zone; recycling at least some of the separated vapor stream, or a thermally treated form thereof, to an inlet of the reaction zone(s) and/or to the feedstock; and recovering solids from the reaction zone(s) as biogenic activated carbon. Methods of using the biogenic activated carbon are disclosed.

Claims (17)

1 . A biogenic activated carbon composition comprising, on a dry basis, at least about 85 wt % total carbon, at most about 15 wt % hydrogen, and at most about 1 wt % nitrogen; and

wherein the activated carbon composition is characterized by an Iodine Number of at least about 1500.

2 . The biogenic activated carbon composition of claim 1 , comprising, on a dry basis, at least about 95 wt % carbon.

3 . The biogenic activated carbon composition of claim 1 , comprising, on a dry basis, at most about 0.5 wt % nitrogen.

4 . The biogenic activated carbon composition of claim 1 , comprising, on a dry basis, at most about 5 wt % hydrogen.

5 . The biogenic activated carbon composition of claim 1 , comprising, on a dry basis, at least about 1 wt % and at most about 10 wt % oxygen.

6 . The biogenic activated carbon composition of claim 1 , comprising, on a dry basis, at most about 0.5 wt % phosphorus.

7 . The biogenic activated carbon composition of claim 1 , comprising, on a dry basis, at most about 0.2 wt % sulfur.

8 . The biogenic activated carbon composition of claim 1 , comprising an additive selected from an acid, a base, a salt, a metal, a metal oxide, a metal hydroxide, a metal halide, iodine, an iodine compound, or a combination thereof.

9 . The biogenic activated carbon composition of claim 8 , wherein the additive is magnesium, manganese, aluminum, nickel, iron, chromium, silicon, boron, cerium, molybdenum, phosphorus, tungsten, vanadium, iron chloride, iron bromide, magnesium oxide, dolomite, dolomitic lime, fluorite, fluorospar, bentonite, calcium oxide, lime, sodium hydroxide, potassium hydroxide, hydrogen bromide, hydrogen chloride, sodium silicate, potassium permanganate, organic acids, iodine, an iodine compound, or combinations thereof.

10 . The biogenic activated carbon composition of claim 8 , wherein the additive is magnetic or comprises a magnetic component.

11 . The biogenic activated carbon composition of claim 1 , comprising iron.

12 . The biogenic activated carbon composition of claim 11 , comprising, on a dry basis, at least about 0.0001 wt % to at most about 1 wt % iron, at least about 0.1 wt % to at most about 0.5 wt % iron, at least about 0.5 wt % to at most about 5 wt % iron, or at least about 1 wt % to at most about 2 wt % iron.

13 . The biogenic activated carbon composition of claim 1 , wherein the composition is characterized by an Iodine Number of at least about 2000, or at least about 2000 to at most about 2250.

14 . The biogenic activated carbon composition of claim 1 , wherein the composition is characterized by a surface area of at least about 1000 m 2 /g, at least about 1500 m 2 /g, or at least about 2000 m 2 /g.

15 . The biogenic activated carbon composition of claim 1 , wherein the composition is in powdered form, granular form, extruded form, or in structural object form.

16 . The biogenic activated carbon composition of claim 1 , wherein the composition has an Abrasion Number from about 20% to about 99%.

Assignments (6)
SECURITY INTEREST Recorded Feb 5, 2025
From: CARBON TECHNOLOGY HOLDINGS, LLC
To: ALTER DOMUS (US) LLC
Reel/Frame 070114/0775 →
RELEASE OF SECURITY INTEREST Recorded Feb 4, 2025
From: FORTRESS CREDIT CORP.
To: CARBON TECHNOLOGY HOLDINGS, LLC
Reel/Frame 070608/0239 →
SECURITY INTEREST Recorded Feb 12, 2024
From: CARBON TECHNOLOGY HOLDINGS, LLC
To: FORTRESS CREDIT CORP.
Reel/Frame 066552/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2023
From: BIOGENIC REAGENTS, LLC
To: BIOGENIC REAGENTS VENTURES, LLC
Reel/Frame 065900/0937 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2023
From: MENNELL, JAMES A.; DESPEN, DANIEL J.
To: BIOGENIC REAGENTS, LLC
Reel/Frame 066062/0397 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2023
From: BIOGENIC REAGENTS VENTURES, LLC
To: CARBON TECHNOLOGY HOLDINGS, LLC
Reel/Frame 066062/0502 →
Continuity (7)
Continuation 16922556 · Jul 7, 2020
Continuation 16574544 · Sep 18, 2019
Continuation 14399793
Provisional Application 61737514 · Dec 14, 2012
Provisional Application 61721827 · Nov 2, 2012
Provisional Application 61643741 · May 7, 2012
Related Publication 20240139707A1 · May 2, 2024
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