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Lookup NU author(s): Dr Zongyuan ZhuORCiD
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© 2022, The Author(s), under exclusive licence to Springer Nature B.V.Purpose: China is a big agricultural country and generates a large amount of biomass wastes every year. Biomass is the only renewable carbon source, which can produce biochar through pyrolysis under anaerobic or hypoxic conditions. Biochar has a rich pore structure, large specific surface area and special adsorption properties, and has been widely used in different industries. Different raw materials and pyrolysis conditions influence its yield and pore structure. Methods: In our study, a flow chart was established in Aspen Plus V8.4 software to simulate the pyrolysis process of rice straw and sugarcane bagasse, and the feasibility of the model was verified by experiment. Finally, the Life Cycle Cost (LCC) method was used to evaluate the economics of the process of preparing biochar from 1 t rice straw and sugarcane bagasse. Results: The simulated value of biochar yield is different from the experimental value. The difference is small at low temperature (300–500 °C), and relatively large at high temperature (600–800 °C), but both remain between 0.55 and 8.93%. Calculations indicate that the costs of rice straw and sugarcane bagasse biochar were 0.79 and 0.93 USD/kg, respectively. Conclusion: Considering from the aspects of yield, pore structure, energy consumption, and economy of biochar, compared with sugarcane bagasse, rice straw has a more competitive advantage in the preparation of biochar. Graphical Abstract: [Figure not available: see fulltext.]
Author(s): Liu Y, Yang X, Zhang J, Zhu Z
Publication type: Article
Publication status: Published
Journal: Waste and Biomass Valorization
Year: 2022
Volume: 13
Pages: 2609-2699
Print publication date: 01/05/2022
Online publication date: 04/01/2022
Acceptance date: 16/12/2021
ISSN (print): 1877-2641
ISSN (electronic): 1877-265X
Publisher: Springer Science and Business Media B.V.
URL: https://doi.org/10.1007/s12649-021-01671-z
DOI: 10.1007/s12649-021-01671-z
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