A Study on Method Development for Measuring Carbon Balance in the Chemical Sequestration-Phase 2 has been awarded to the Combustion Lab by US DOE and Paras Research Corporation.
Three stages of carbon dioxide management and sequestration have been proposed. These stages include CO 2 capture from power plant flue gas -using ammonium solutions in a wet scrubber to react with CO 2 to form ammonium bicarbonate fertilizer (stage 1), short-term carbon storage through enhanced growth of biomass using the ammonium bicarbonate fertilizer (stage 2), and long term carbon storage by securely sequestering CO 2 as carbonates in underground water systems (stage 3). By following the utilization of ammonium bicarbonate as a fertilizer, a test protocol was developed with an ecosystem containing soil, groundwater, biomass and atmosphere with temperature, moisture, Ph and composites control. Sample selection, sampling plans development, laboratory-scale experimental unit design, analytical method development and test matrix selection were completed in Phase 1. A greenhouse will be constructed, and a series of experiments to study carbon balance in a simulated ecosystem will be conducted in Phase II. Three typical crops, three typical soils and three ground waters will be used in the simulated ecosystem. Carbon-14 will be used as a tracer in the experiments. A model for carbon transformation from ammonium bicarbonate to the terrestrial ecosystem will be developed.