Galleries Gardening Tools and materials Handful of biochar Handful of biochar Man with a handful of biochar pellets made from herbs using pyrolysis that can be used as a soil amendment or to make Terra Preta. License License this image from Alamy Keywords biochar biomass black carbon carbon capture charcoal fine-grained hand handful high-carbon pellets pyccs pyrogenic carbon pyrolysis terra preta More from this shoot Handful of biochar Handful of biochar