«There may be a potential upside to using biochar in the temperate zone, like promoting soil carbon
storage to slow climate change,» said Dr. Hungate, «but our analysis, summarizing more than 1,000 observations, shows that the
yield benefits just aren't there.
When
storage is combined with enhanced oil recovery to extract extra oil from an oil field, the
storage could
yield net
benefits of US$ 10 — 16 per tonne of CO2 injected (based on 2003 oil prices).