Journal
BIORESOURCE TECHNOLOGY
Volume 393, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2023.130085
Keywords
Bamboo waste biochar; Temperature -programmed microwave; pyrolysis; Sustainable waste management; Benzene derivatives adsorption; Superhydrophobic biochar; Environmental remediation
Ask authors/readers for more resources
This study presents a method of programmed microwave pyrolysis combined with low-dose ferric chloride to produce hydrophobic porous biochar suitable for efficient adsorption of benzene derivatives. The results show that programmed microwave pyrolysis can significantly increase the specific surface area of biochar and enhance its adsorption capacity for benzene and toluene.
To customize biochar suitable for efficient adsorption of benzene derivatives, this study presents programmed microwave pyrolysis to produce hydrophobic porous biochar with low-dose ferric chloride. Designated control of the ramping rates in the carbonization stage and the temperatures in the activation stage were conducive to enlarging the specific surface area. Iron species, including amorphous iron minerals, could create small-scale hotspots during microwave pyrolysis to promote microporous structure development. Compared with conventional pyrolysis, programmed microwave pyrolysis could increase the specific surface area from 288.6 m2 g-1 to 455.9 m2 g-1 with a short heating time (15 min vs. 2 h) under 650 degrees C. Engineered biochar exhibited higher adsorption capacity for benzene and toluene (136.6 and 94.6 mg g-1), and lower adsorption capacity for water vapour (6.2 mg g-1). These findings provide an innovative design of engineered biochar for the adsorption of volatile organic compounds in the environment.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available