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It's been a while since I posted about biochar. I've done an experiment with a 55 gallon drum, but found that my fire ring wasn't big enough to to get it hot enough. While I shop for a larger fire ring, I realized I had a 20 gallon trash can that would fit well. I drilled a few holes in the side...

With the paint cans/hotel pan, I just leave the "kilns" in the fire until it burns out. My guess is that it'd take a couple hours to char, maybe less...depending on the dryness/size of the materials and the heat of the fire. Once things get hot, you'll see steam blowing out the holes in the...

The Results After the fire cooled off, I opened the three containers to see what I could learn. The wood, as expected, turned to char pretty well, in line with prior burns I've done. Its nice char but the density of it makes it a little tough to crush. The can wasn't full, so the amount of char...

Next up was putting the hotel pan and two metal paint can with our three materials into the fire ring, and starting the fire. Once it got going, I threw a little extra Japanese Knotweed in, just to dispose of it. In between adding more wood to the fire, I took the opportunity to sift a...

I had what appears to be an increasingly rare thing these days - a weekend with no plans and decent weather to work around the property. I decided to do a little biochar experiment with a few different inputs while cleaning up some scrap wood. I occasionally make biochar for use in my coops (to...