2.1.3. Biochar production systems
Biochar is a multi-process product whose qualities are dependent on each process and also
the material to which the process is applied. Since the technology is still in a period of
development and not yet optimised to producing a product for use in soil, it is useful to review
the various technologies currently in use. The processes of slow- and fast-pyrolysis are
exemplified in Figure 3 and 4 and discussed in the subsequent sections.