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New bio-based technology uses waste wood to produce high-value activated carbon
Snapshot: Forest Service scientists investigated making activated carbon products from renewable woody biomass material such as forest or mill residues for technology potential and environmental benefit with a comparison to commercial coal activated carbon. The results demonstrated that expanding biofuels and bioproducts production using renewable forest biomass as feedstock contributes to not only alternatives to fossil fuels, but also facilitates forest restoration treatments by providing new markets for management of woody biomass residues.
Figure 1. Wood feedstock to final product conversion: (a) micro-chips made from the wood of coniferous tree species; (b) biochar from wood chips carbonized in a pyrolysis system; and (c) activated carbon made from biochar activated using steam in a rotary calciner.