Carbon capture system, apparatus, and method
A combined power conversion and carbon capture and recycling subsystem including a fossil fueled oxidation unit, a physical adsorbent CO2 capture medium, rotor, motor, heater, CO2 compressor, diffuser and water storage tank. Exhaust gas from fossil fuel oxidation is scrubbed of CO2 via passage across a physical adsorbent and then released from the adsorbent via fuel oxidation waste heat. High CO2 concentration scrubber exhaust air is then compressed and fed to a diffuser which facilitates dissociation of the CO2 into water where it is temporarily stored for use in watering plants. Carbon from fossil fuel is recycled back into the environment and permanently stored as biomass by natural means of photosynthesis.
1. A micro carbon capture system comprising:
a fossil fuel oxidation unit;
an adsorbent positioned to receive exhaust gas of the fossil fuel oxidation unit, wherein the adsorbent is positioned to adsorb CO 2 from the exhaust gas; and
a soil filtering unit positioned to receive CO 2 released from the adsorbent;
wherein the soil filtering unit is adapted to repurpose, sequester, or combinations thereof the CO 2 as biomass or solid carbonate; and
wherein the soil filtering unit comprises at least one soil or compost filter, at least one alkylation filter, or combinations thereof positioned such that CO 2 filters through the at least one soil or compost filter, CO 2 filters through the at least one alkylation filter, or combinations thereof.
2. The system of claim 1 , wherein the adsorbent is a regeneratable adsorbent, the system further comprising a cycling mechanism configured to cycle the regeneratable adsorbent between a first position and a second position;
wherein, in the first position, the adsorbent is positioned to adsorb CO 2 from the exhaust gas and, in the second position, the adsorbent is positioned to release the CO 2 .
3. The micro carbon capture system of claim 2 , wherein the cycling mechanism includes a rotor operatively coupled to a motor, wherein the adsorbent is positioned on the rotor, and wherein the motor is configured to rotate the rotor to move the adsorbent between the first position and the second position;
wherein the adsorbent is positioned within a housing, the housing including an adsorbing chamber positioned to receive the exhaust and a releasing chamber positioned to receive the released CO 2 ; and
wherein rotor timing is synchronized with exhaust load and CO 2 content, such that a majority of trapped CO 2 is released upon a single revolution with the adsorbent regenerated to accept a new CO 2 load upon reentering into the adsorbing chamber.
4. The micro carbon capture system of claim 3 , wherein the motor is driven directly from the fossil fuel oxidation unit, or is powered by an external power source.
5. The micro carbon capture system of claim 3 , wherein the adsorbing chamber is maintained within a temperature range suitable for adsorption of CO 2 onto the adsorbent, and wherein the releasing chamber is maintained within a temperature range suitable for deadsorption of CO 2 from the adsorbent, wherein the temperature within the releasing chamber is higher than the temperature within the adsorbing chamber.
6. The micro carbon capture system of claim 2 , wherein regeneration of the adsorbent is achieved via: pressure cycling using a pressure sensitive adsorbent; or current cycling using an electrical charge sensitive adsorbent.
7. The micro carbon capture system of claim 6 , wherein:
a pressure source is provided by a compressor powered either mechanically by a CHP/CCHP crankshaft or electrically by a CHP/CCHP generator or by an external power supply to provide the pressure cycling; or
a current source is provided by either a generator of a CHP/CCHP system or an external power supply to provide the current cycling.
8. The micro carbon capture system of claim 1 , wherein the soil filtering unit comprises a vertical series of drawers, the drawers comprising soil or compost filters, alkylation filters, or combinations thereof, wherein the drawers are permeable, allowing passage of CO 2 through the drawers.
9. The micro carbon capture system of claim 1 , further comprising a bioreactor in fluid communication with a water supply, wherein the bioreactor receives biomass produced in the soil filtering unit, the bioreactor containing anaerobic bacteria, protozoa, or combinations thereof that decompose the biomass in the presence of water from the water supply in a two-step process involving biohydrogen generation and biomethanation.
10. The micro carbon capture system of claim 1 , wherein the fossil fuel oxidation unit is an internal combustion engine, a water heater, or a clothing dryer.
11. The micro carbon capture system of claim 1 , wherein the adsorbent is a solid adsorbent.
12. A micro carbon capture system comprising:
a fossil fuel oxidation unit;
an adsorbent positioned to receive exhaust gas of the fossil fuel oxidation unit, wherein the adsorbent is positioned to adsorb CO 2 from the exhaust gas; and
a water tank positioned to receive CO 2 released from the adsorbent;
wherein the water tank contains water, wherein CO 2 is stored as carbonated water within the water tank;
a compressor, wherein the compressor is in fluid communication between the adsorbent and the water tank.
13. The micro carbon capture system of claim 12 , further comprising an irrigation system in fluid communication with the water tank, the irrigation system positioned to receive the carbonated water from the water tank and deliver the carbonated water to vegetation.
14. A micro carbon capture system comprising:
a fossil fuel oxidation unit;
an adsorbent positioned to receive exhaust gas of the fossil fuel oxidation unit, wherein the adsorbent is positioned to adsorb CO 2 from the exhaust gas;
a water tank positioned to receive CO 2 released from the adsorbent, wherein the water tank contains water, wherein CO 2 is stored as carbonated water within the water tank; and
a compressor and a carbon diffuser, wherein the compressor is in fluid communication between the adsorbent and the water tank, and wherein the carbon diffuser is positioned to disperse, atomize, or combinations thereof the released CO 2 into the water within the water tank.
15. The micro carbon capture system of claim 14 , wherein the compressor is driven by the fossil fuel oxidation unit, or is powered by an external power source.
16. A method of capturing carbon, the method comprising;
directing exhaust from a fossil fuel oxidation unit to an adsorbent;
adsorbing CO 2 from with the exhaust onto the adsorbent;
deadsorbing the CO 2 from the adsorbent; and
releasing the deadsorbed CO 2 into a soil filtering unit, the soil filtering unit comprising at least one soil or compost filter, at least one alkylation filter, or combinations thereof, wherein, within the soil filtering unit, sequestration of CO 2 by soil particulates occurs, catalyst activity on CO 2 by microorganisms occurs, plant respiration of CO 2 occurs, or combinations thereof.