Recycling Waste to Energy

Terralog Technologies has developed and patented an innovative technology to manage municipal biosolids and recycle this waste into clean energy. With appropriate geological formation selection, well design, and monitoring, biosolids slurry can be injected into soft, porous, sand formations at depths far below the surface (on the order of 5000ft or more).

At the high temperature and pressure conditions in the deep subsurface, CO2 is ten times more soluble in water than CH4 (see charts below). Therefore, as the gas percolates through the formation water, the CO2 will be preferentially absorbed by the water, leaving a relatively methane rich gas phase. Due to density segregation, the gas will percolate upwards through the brine filled porous sand formation until it reaches the impermeable capping shale formation. The resulting relatively pure methane gas can be stored for subsequent beneficial use at the subsurface, in the same way biogas generated from surface digesters is currently used at many modern sanitation plants.