Can biochar make climate change a profitable business opportunity?
Biochar is a super charcoal made by heating any biomass – for example, corncob, husk or stalk, potato or soy hay, rice or wheat straw – without oxygen. All of the cellulose, lignin and other, non-carbon materials gasify and are burned away. What remains is pure carbon – 40% of the carbon originally contained in the biomass.
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Why is it so valuable?
Climate change is threatening food security around the world. When farmers use Biochar as a soil amendment they will benefit from:
• Bigger yields • Healthier soil • Lower acidity • Better water retention
• Stronger plants • Richer soil life • Less contamination • Higher fertility
• Promotes seed germination
How do you make Biochar?
Biochar production is a simple process that anyone can do. Warm Heart has designed cheap and easy methods for converting biomass waste into biochar. The simplest and cheapest method is to dig a hole in the ground. You can also build a cheap biochar oven using an old oil drum, or build a trough.
Whichever method is used, the process is the same, biomass is burned with a lack of oxygen, turning the biomass in biochar, smoke free.
Benefits of making Biochar
If you live in the developed world, field fires are a thing of the past. If you live in the developing world, smoke from agricultural field fires can obscure the sun for days.
Field fires are often smoky, slow smolders burning the residue of crops containing fertilizers fortified with nitrogen and sulphur. These generate large quantities of greenhouse gases (GHGs) such as methane and the NOxs (nitrous oxides) that are many times more warming than CO2. (Methane has a global warming potential (GWP) of 25, NOx 298!)
They also produce large quantities of smog precursors such as ammonia and the SOx (sulphur oxides) that react with sunlight to form smog. Finally, that smoke that blocks the sun is PM2.5 – particulate matter so small that it passes through the walls of the lungs into the bloodstream to wreak havoc throughout the body.
The many uses of Biochar
While it may be invaluable for farmers, it has many other practical uses too. The absorption qualities of biochar make it a perfect solution for odor control, useful for eliminating unwanted odors: in cars, homes, compost piles, pet odors, closets, bathrooms, even in stinky old sneakers!
The powerful moisture adsorption quality makes it extremely helpful in cutting down mildew in damp areas.
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