This is from a review of a book on biochar which explores some of the potential benefits, and also very great RISKS, of using biochar. Biochar seems to be one of those technologies that could be really very good, or really very, very bad… depending on how we use it. It can produce food, fuel, fertiliser, soil remediation AND carbon sequestration if we do it right… or focus more on the fuel, less on the food, with the risk of raising world food prices (again).
However, these quotes are truly amazing.
Remember, biochar is light, easy to spread off the back of a truck, and if done right can produce the syngas to fuel the truck that spreads the biochar (and a bunch of other things!)
Currently half the syngas is wasted cooking up the next batch of biochar. I imagine in a post-peak world biochar cookers might use Concentrated Solar Power to provide the heat to cook the biomass up, so that they could then save ALL the syngas (or synfuel) for running local agriculture.
…. giving a mere 2.5 percent of the world’s productive land over to biochar production would bring CO2 to pre-industrial levels by 2050.
…. Bruges shows that the second scenario is easily doable, in light of a recent report by the Food and Agriculture Organization of the United Nations (FAO) and the Organisation for Economic Co-operation and Development (OECD) showing that an additional 4 billion acres could be added to the world’s existing 3.5 billion acres of cropland.