Using the heat from geothermal resources to supply the heat needed for concrete production. This heat can be supplied by means of what are called heat pipes from the heat source underground to the processing facility at the surface. This will not be likely to be able to supply all of the heat for converting CaCO3 into CaO, but there are manufacturing technologies allowing this process to operate as low at 800 degrees and there is existing solar furnace technology that could fill in the heat gap with the solar powered technology.
Carbon dioxide emitted as waste from concrete production, which is an unusually large density/air for industrial waste, is fed into a pipe containing moving seawater. The heat from the exhaust will allows desalination processes, in general, to operate a greater efficiency.
Seawater and salt water exposed to air already contains a higher ratio of carbon dioxide than air, and existing methods can eliminate this carbon dioxide from the stream, including some desalination techniques. By adding high density carbon dioxide to seawater/saltwater that is already capturing carbon dioxide from its system, there is an economic incentive for a variety of technologies such as desalination and zero carbon concrete production.
