How It’s Made

Biochar is made through a process called “pyrolysis”.  All this means is that biochar is created in a low oxygen and low temperature environment (< 700°C).  This is different from your backyard grill where there is an abundance of oxygen.  Typically biochar is made in a customized container that can be sealed to limit the amount of oxygen present.  Depending on the temperature of the pyrolysis technique you can produce biochar in a matter of minutes, hours, or even days.  Lower temperatures produce more biochar whereas higher temperatures produce less, however, in these higher temperatures you also produce syngas and bio-oil.

Syngas is a mixture of various gases that is emitted in higher temperature biochar production techniques.  This gas can be burned as fuel either in the pyrolysis process or in certain set-ups can be captured for use as a cooking, heating, and other uses.

Bio-oil is a sticky tar like substance that is also produced during high temperature pyrolysis techniques.  This product also has the potential to be used as fuel either for heating or electricity production.

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