Non-thermal plasma enhances performances of biochar in wastewater treatment and energy storage applications
Article
Article Title | Non-thermal plasma enhances performances of biochar in wastewater treatment and energy storage applications |
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ERA Journal ID | 3959 |
Article Category | Article |
Authors | Zhou, Rusen, Wang, Xiaoxiang, Zhou, Renwu, Weerasinghe, Janith, Zhang, Tianqi, Xin, Yanbin, Wang, Hao, Cullen, Patrick, Wang, Hongxia and Ostrikov, Kostya Ken |
Journal Title | Frontiers of Chemical Science and Engineering |
Journal Citation | 16 (4), pp. 475-483 |
Number of Pages | 9 |
Year | 2022 |
Publisher | Springer |
Place of Publication | China |
ISSN | 2095-0179 |
2095-0187 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s11705-021-2070-x |
Web Address (URL) | https://link.springer.com/article/10.1007/s11705-021-2070-x |
Abstract | Surface functionalization or modification to introduce more oxygen-containing functional groups to biochar is an effective strategy for tuning the physico-chemical properties and promoting follow-up applications. In this study, non-thermal plasma was applied for biochar surface carving before being used in contaminant removal and energy storage applications. The results showed that even a low dose of plasma exposure could introduce a high number density of oxygen-functional groups and enhance the hydrophilicity and metal affinity of the pristine biochar. The plasma-treated biochar enabled a faster metal-adsorption rate and a 40% higher maximum adsorption capacity of heavy metal ion Pb2+. Moreover, to add more functionality to biochar surface, biochar with and without plasma pre-treatment was activated by KOH at a temperature of 800 °C. Using the same amount of KOH, the plasma treatment resulted in an activated carbon product with the larger BET surface area and pore volume. The performance of the treated activated carbon as a supercapacitor electrode was also substantially improved by > 30%. This study may provide guidelines for enhancing the surface functionality and application performances of biochar using non-thermal-based techniques. |
Keywords | non-thermal plasma; supercapacitor; wastewater treatment; biochar modification; surface functionalization |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401703. Energy generation, conversion and storage (excl. chemical and electrical) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Dalian Maritime University, China |
Queensland University of Technology | |
University of Sydney | |
Centre for Future Materials |
https://research.usq.edu.au/item/z02zz/non-thermal-plasma-enhances-performances-of-biochar-in-wastewater-treatment-and-energy-storage-applications
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