The microalgae were grown at the three flue gas concentrations and one concentration with pure CO2 from bottles (Figure 1, Table 1).
The dry weights at the two lower flue gas concentrations were slightly higher compared with the 2.6% control CO2 treatment using pure liquid gas.
The high experimental combustion efficiency calculated from the flue gases concentrations demonstrates the favorable performance of the conical spouted bed combustor for the catalytic combustion of vine shoots.
The major flue gas concentrations were quite well described, however, CO emission predictions were only qualitatively following the measured trends when O2 is available and severely under-predicted under substoichiometric conditions.
This single unit (650 MW) plant burns high sulfur coal as the fuel source and utilizes a wet limestone scrubber for SO x control and selective catalytic reduction (SCR) with ammonia injection for NO x control, resulting in low flue gas concentrations of NO x and SO x [18].
Important process parameters, such as slurry pH, inlet flue gas concentration of SO2, reactor temperature, and slurry concentration of Cl− have been varied.
The influence of the catalyst and inlet gas temperature on the flue gas concentration was analyzed.
Increasing the flue gas concentration slightly decreased the O2 content and decreased the pH in the algae culture.
The dry weight production was significantly lower (about 25%) at the highest flue gas concentration compared with the other treatments.
At the end of the experiment, the pH decreased from 6.8 to 6.0 when the flue gas concentration was increased from the lowest to the highest level.
