TY - JOUR
T1 - Biochar from brown algae: Production, activation, and characterisation
AU - Pak, Tannaz
AU - Elyasi Gomari, Kamal
AU - Bose, Suranjana
AU - Tonon, Thierry
AU - Hughes, David
AU - Gronnow, Mark
AU - MacQuarrie, Duncan
PY - 2023/11/4
Y1 - 2023/11/4
N2 - Biochar has shown promise in combining water treatment and soil enhancement with long term carbon sequestration. Biochar performance depends on the feedstock and the pyrolysis process conditions. In this study, we conducted biochar production, activation, and characterisation from the brown algae Laminaria digitata, Saccharina latissima, Saccorhiza polyschides, Himanthalia elongata, and pelagic sargassum for several potential applications. Our results showed that these seaweeds, as harvested and without washing, contained significant amount of salt that needs to be removed to improve biochar quality for application in water treatment. However, presence of salts may confer advantages in certain catalytic processes. X-ray computed micro-tomography analysis shows the formation of porosity as a result of pyrolysis and biochar activation. Chemical activation successfully improved the biochar quality, in particular the available surface area for water and soil remediation. These results pave the way to extend applications of brown algae derived activated biochars.
AB - Biochar has shown promise in combining water treatment and soil enhancement with long term carbon sequestration. Biochar performance depends on the feedstock and the pyrolysis process conditions. In this study, we conducted biochar production, activation, and characterisation from the brown algae Laminaria digitata, Saccharina latissima, Saccorhiza polyschides, Himanthalia elongata, and pelagic sargassum for several potential applications. Our results showed that these seaweeds, as harvested and without washing, contained significant amount of salt that needs to be removed to improve biochar quality for application in water treatment. However, presence of salts may confer advantages in certain catalytic processes. X-ray computed micro-tomography analysis shows the formation of porosity as a result of pyrolysis and biochar activation. Chemical activation successfully improved the biochar quality, in particular the available surface area for water and soil remediation. These results pave the way to extend applications of brown algae derived activated biochars.
UR - https://www.sciencedirect.com/science/article/pii/S2589014X23003596
U2 - 10.1016/j.biteb.2023.101688
DO - 10.1016/j.biteb.2023.101688
M3 - Article
SN - 2589-014X
VL - 24
JO - Bioresource Technology Reports
JF - Bioresource Technology Reports
M1 - 101688
ER -