I sent a related article to Tom Ward, and i am eagerly expecting his perspective. I know Tom is a proponent of charcoal and is a leading thinker in "Social Forestry"--the interface of the urban and the rural/zone 5 area.
A carbon-negative source of energy which is also a soil-mineral remediation treatment may sound too good to be true, but the argument is promising.
Tom?
Kelpie Wilson | Birth of a New Wedge
"The first meeting of the International Agrichar Initiative convened about 100 scientists, policymakers, farmers and investors with the goal of birthing an entire new industry to produce a biofuel that goes beyond carbon neutral and is actually carbon negative. The industry could provide a "wedge" of carbon reduction amounting to a minimum of ten percent of world emissions and possibly much more....
"One reason for the excitement is agrichar's potential to address a range of problems from poor soil fertility to waste disposal to rural development. About half the world's population relies on charcoal for cooking fuel, and the production of charcoal drives deforestation in Africa and other places. Smoky, inefficient charcoal kilns pollute the air with noxious gases that harm health and heat the planet.
"An effort to replace these kilns with modern, efficient pyrolysis units would relieve the pressure on forests by reducing waste and adding the ability to use any source of biomass, including agricultural waste products such as rice hulls. The ultimate objective is to produce enough charcoal to have some left over to bury and increase soil fertility, leading to a bootstrapping effect where increased yields provide both more food and more biomass for energy.
"Projects discussed at the agrichar meeting ranged from a household-size pyrolyzing stove that produces both cooking gas and charcoal, to industrial-scale units capable of processing large waste streams from sugar mills, pulp mills, poultry farms and even municipalities."
No comments:
Post a Comment