Lovelock on biochar

Dr. Lovelock has endorsed biochar as a means of mitigating the effects of climate change resulting from excessive emissions of climate gases. The article behind the link also takes issue with the attack on biochar by George Monbiot from the Guardian. His outburst has derailed a productive debate that needs to continue. However, we must keep the debate in perspective.

Here is a quote from the article:

But if we could also extract CO2 we "might" have a shot. And the approach with the most potential, said Lovelock, is to turn organic material into "biochar" and bury it. Lovelock endorsed the approach during his May 26 meeting in Toronto. "I've written before about biochar, or agrichar, or charcoal, or just plain char – it's all pretty much the same. Take biomass, such as wood or municipal organic waste, and bake it at over 300 degrees C in the absence of oxygen. The process is called pyrolysis, and what it does is lock in about 60 per cent of the carbon in the charred biomass."

http://www.thestar.com/sciencetech/article/654444

Biochar Workshop

Biochar will take centre stage in Oslo on Friday 26th during a workshop arranged by yours truly and Arvid Solheim of the Norwegian Development Fund.

The objective is to direct focus at this very exciting substance that can contribute to carbon sequestration, soil enrichment and increased productivity as well as serve as a means to build value chains.

Biochar is the subject of many lively debates, but I encourage people to keep their eye on the ball - the the big one - Earth. Photosynthesis harvests CO2 from the atmosphere and produces biomass. Normally the CO2 is released back into the atmosphere when biomass burns or rots. The plan is to take "waste" biomass and use pyrolysis to convert it to biochar, an inert substance that remains stable in the earth for thousands of years. Biochar is porous and hence can act as a "sponge" for water as well as being an excellent habitat for micro-organisms that help produce nutrients that benefit the soil. It also acts as a slow release mechanism for nutrients and moisture.

The plan is not to create giant monoculture plantations, but to use biochar judiciously to improve soil quality and extract CO2 from the atmosphere.