Researchers reveal different photocatalytic process of Cr(VI) on cellulose- and lignin-rich biochar

As much as 300 to 500 billion tons of biochar are reported to be in soil, sediment and aquatic habitats in China. The discovery of photocatalytic activity of biochar opens up a new frontier in understanding how this substance affects and regulates geochemical processes related to key environmental elements. However, the biomass sources and pyrolysis temperatures can significantly affect the biochar structure, leading to substantial variability.