Biochar is produced via the thermochemical conversion of biomass in oxygen-depleted conditions as, for example, in pyrolysis and gasification processes.
More recently, this material has become the object of research in different fields to explore countless possible applications in agriculture, farming and other sectors as a more sustainable alternative to fossil-derived carbonaceous materials such as coke or activated carbon. The attractiveness of biochar is mostly due to its large content of carbon in a stable form (e.g. recalcitrant to mineralization) and to its porous structure. The extent of the specific surface area can be as high as to 1000 m2/g , making biochar able to bind various substances in a similar way as commercial active carbon. These properties are extremely valuable to help meet the global demand for environmental safety, soil health restoration and for carbon negative technologies.
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