| Title |
Critical impacts of pyrolysis conditions and activation methods on application-oriented production of wood waste-derived biochar |
| ID_Doc |
29119 |
| Authors |
He, MJ; Xu, ZB; Sun, YQ; Chan, PS; Lui, I; Tsang, DCW |
| Title |
Critical impacts of pyrolysis conditions and activation methods on application-oriented production of wood waste-derived biochar |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.biortech.2021.125811 |
| Abstract |
Wood waste-derived biochar with tunable carbon structure and surface functionality has a great potential for various environmental applications and circular economy; however, a holistic understanding on the applicationoriented production of high-efficacy biochar is lacking. Thus, the co-impacts of different pyrolysis conditions (temperature and duration) and activation methods (steam, CO2, and acid pretreatment) on the biochar properties were first investigated. A temperature of 650 degrees C was effective in forming carbonized structure in biochar, while 750 degrees C was critical for the porous structure development. A longer pyrolysis duration (>60 min) enhanced the pore volume without compromising the yield. The activated biochar exhibited a larger pore volume (2.1- to 2.9-fold of pristine biochar) for potential high-end emerging applications. The acid pretreatment effectively removed dissolved organic carbon and most metals from the biochar. This study provides an essential guidance on the fit-for-purpose designs of biochar production conditions for sustainable wood waste management. |
| Author Keywords |
Engineered biochar; Pyrolysis condition; Activation method; Physicochemical properties; Sustainable waste management |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000696991200019 |
| WoS Category |
Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
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