either by thermal or solvent process. The target is to collect up to 2.5 t CO2 per year
with one “tree.”
All above projects aim at developing technological solutions that may reduce the
economic and energetic cost of DAC. A cost of 600 US$/t CO2 is not economically
acceptable and the technology will not reach commercialization. Recovery of CO 2
from more concentrated sources (point sources such as power plants and industry,
for which the concentration of CO 2 ranges from 4 to 90+%) is much more convenient. Moreover, the application of CO 2 must be further developed and this
requires investment in research. Data reported above say that there is a great interest
in converting CO 2 and water into fuels, liquid, or gases. This attitude is fully at the
hearth of the cyclic economy of carbon. In previous chapters, we have discussed the
issue of “rate of formation/rate of conversion” of CO 2 . We have shown that biological fixation of CO 2 is some 1 000–10 000 times slower than its formation rate.
Chemical or catalytic conversion of CO 2 can be faster than the biological process.
Will they be able to convert CO 2 into useful products at the same rate it is formed?
This is a big challenge.
90
6 Reduction of Carbon Dioxide Emission into the Atmosphere …
with one “tree.”
All above projects aim at developing technological solutions that may reduce the
economic and energetic cost of DAC. A cost of 600 US$/t CO2 is not economically
acceptable and the technology will not reach commercialization. Recovery of CO 2
from more concentrated sources (point sources such as power plants and industry,
for which the concentration of CO 2 ranges from 4 to 90+%) is much more convenient. Moreover, the application of CO 2 must be further developed and this
requires investment in research. Data reported above say that there is a great interest
in converting CO 2 and water into fuels, liquid, or gases. This attitude is fully at the
hearth of the cyclic economy of carbon. In previous chapters, we have discussed the
issue of “rate of formation/rate of conversion” of CO 2 . We have shown that biological fixation of CO 2 is some 1 000–10 000 times slower than its formation rate.
Chemical or catalytic conversion of CO 2 can be faster than the biological process.
Will they be able to convert CO 2 into useful products at the same rate it is formed?
This is a big challenge.
90
6 Reduction of Carbon Dioxide Emission into the Atmosphere …