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- Title
N-Rich Algal Sludge Biochar for Peroxymonosulfate Activation toward Sulfadiazine Removal.
- Authors
Liu, Chao; Chen, Zhenxiang; Kang, Ruiqin; Wang, Jing; Lu, Qingwei; Wang, Tao; Tian, Dayong; Xu, Ying; Wang, Zhan; Ding, Huiping
- Abstract
The fabrication of a green, high activity and low-cost carbon-based catalyst capable of activating new oxidant (peroxymonosulfate, PMS) for contaminants abatement is needed. In this research, we prepared novel N-doped biochars via one-step pyrolysis of algal sludge without external nitrogen sources. The obtained ASBC800 possessed the largest specific surface area (SBET = 145.596 m2 g−1) and thus it displayed the best catalytic performance, as revealed by the effective elimination of sulfadiazine (SDZ, >95% within 70 min) with 0.2 g L−1 ASBC800 and 0.5 mM PMS. Both radical species (e.g., SO4•−, and •OH), and nonradical regime (1O2 and electron-transfer) contributed to SDZ oxidation, in which ASBC800 played essential roles in activating PMS, accumulating SDZ, and regulating electron shuttle from SDZ to ASBC800-PMS*. Overall, this work not only provides a novel strategy for the synthesis of N-rich and cost-effective biochar but also promotes the development and application of carbon-based functional materials in environmental remediation.
- Subjects
PEROXYMONOSULFATE; SULFADIAZINE; BIOCHAR; CARBON-based materials; ENVIRONMENTAL remediation; WATER treatment plant residuals; OXYGEN reduction
- Publication
Coatings (2079-6412), 2023, Vol 13, Issue 2, p431
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings13020431