In the current configuration, a bio-methane gas internal combustion engine (ICE) in the Anaerobic Digestion plant emits a maximum of 2285 m 3 /h flue gas; however, under present conditions it is running at a capacity of 75%. The analysis of the flue gas reveals an average of 12% CO2, and thus the plant emits 205.65 m 3 CO2/h or 4,935.6 m 3 CO2/day. As noted above the sequestration efficiency of the as described container ZAP-C 3 system is about 55% meaning about 2,714 m 3 CO2/day is sequestered as either CaCO3 and volumetrically stabilized aggregate. This volume correlates to about a mass of CO2 sequestered to 5,075 kg/day or 1,852 ton/year. The original design of the ZAP-C 3 system involved taking the slag and reduced CO2 content flue gas output and passing into a second container which at pilot scale As outlined in the Introduction there are significant barriers to the truly carbon negative carbon capture and sequestration (CCS) process. The following is a discussion of how the ZAP-C3 process addresses these issues compared to alternative methods.