Is biochar the same as charcoal?
In this regard, can charcoal be used as biochar?
Theoritically, this should be possible considering that charcoal (solid/lump) and biochar (powder) are one and the same thing. The application (end use) and physical form are the reasons two different names exist for essentially the same material. So yes, it is possible to use it as biochar.
Additionally, what is the difference between coal and charcoal? Coal is a mineral, and charcoal is not. It takes over millions of years to produce coal, whereas charcoal can be produced easily. Charcoal produces more heat, and it is cleaner than coal. Coal is basically a result of fossil fuel that formed over many years, whereas the source of charcoal is slow burning carbon woods.
Keeping this in consideration, what can be used to make biochar?
Biochar can be made from a much broader range of materials than charcoal can. Crop residues, manures, and wood are all potential feedstocks. In addition to use in the soil, newer uses for biochar are now competing with traditional uses for activated carbon, carbon black, and graphite.
Do worms eat biochar?
Worms like decomposing organic material to eat. Biochar doesn't decompose. In fact, what small pieces of biochar that actually pass through a worm's digestive tract wouldn't offer much to the worm by way of nutrition. But it would certainly charge the biochar with all sorts of wonderful enzymes and bacteria.