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ABSTRACT
In this paper, the method of ‘torrefaction–fast pyrolysis–physical activation’ was conducted to investigate the impact of torrefaction on the properties of activated carbon through CO2 activation. It was found that torrefaction had a significantly positive influence on the quality of activated carbon and 280°C was the optimal torrefaction temperature. The activated carbon obtained under the recommended condition had a higher yield (13.0 ± 0.3% based on dried rice husk) and most developed pore structure (specific surface area of 1090.7 m2/g). The results may be helpful for the potential utilization of high ash content biomass like rice husk.
Acknowledgments
The authors are grateful for the financial support from the Fundamental Research Funds for the Central Universities (No. 2242016K41041), the National Natural Science Foundation of China (No. 51376047) and National Science and Technology Supporting Plan of China (No. 2014BAA05B01).
Supplementary material
Supplemental data for this article can be accessed here.
