A little ignoring, avoiding, waiting and blandishing simply doesn’t help any more: We have to actively protect the climate. For example, the latest report of the Intergovernmental Panel on Climate Change (IPCC) makes it clear that if global warming is to be limited to 1.5 degrees, several hundred gigatonnes of the greenhouse gas CO2 must be removed from the atmosphere this century. A completely utopian project?
Not at all. A very ambitious goal, but certainly feasible with these technologies: reforestation, renaturation of forests and rural areas, carbonisation of biomass in industrial processes such as the PYREG process with subsequent capture and storage of the resulting CO2 and increasing the carbon content in soils. The IPCC refers explicitly to the studies of Claudia Kammann (Geisenheim University of Applied Sciences), Hans-Peter Schmidt (Ithaka Institute) and Constanze Werner and Wolfgang Lucht (Potsdam Institute for Climate Impact Research). All four researchers have investigated and proven the climate protection potential of biochar in detail.
Biochar binds 3 times its own weight to CO2. It counteracts soil humus loss by returning carbon to the soil. In addition, it significantly reduces methane and nitrous oxide emissions (which are 25 times/ 300 times as harmful to the climate as CO2) when introduced into the soil or as a bedding additive in the stable. In addition, not a single tree has to die in the end for biochar: The worldwide quantities of residual biomass such as green waste, slurry & manure, biowaste, nut shells, sieve residues etc. are loosely sufficient to produce biochar in a very sustainable way and to save the climate.
(photo © nicoelnino-fotolia.com)