| Issue |
E3S Web Conf.
Volume 573, 2024
2024 International Conference on Sustainable Development and Energy Resources (SDER 2024)
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 6 | |
| Section | Frontier Research in Environmental Science and Engineering Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202457301005 | |
| Published online | 30 September 2024 | |
Biochar as sustained-release carbon source and carrier for microbial denitrification
1 Power China Chengdu Engineering Corporation Limited, Chengdu, 610072, China
2 Three Gorges Reservoir Area’s Ecology and Environment Key Laboratory of Ministry of Education, Chongqing University, Chongqing, 400045, China
* Corresponding author: Dingwenchuan@cqu.edu.cn
The biochar used to improve the soil also affects the nitrogen cycle in the water after flowing into the waterbody. In this paper, the function of biochar prepared at different pyrolysis temperatures in the denitrification process in water is studied. Some substances on the surface of biochar can be used as a carbon source for microorganisms, but the carbon source provided by biochar is limited. With the increase of pyrolysis temperature, the effectiveness of biomass on the surface of biochar shows a downward trend. When the pyrolysis temperature is 300°C, the C element content on the surface of biochar is the highest, which is 1.76 mg·g−1, and the oxidizable part increases. Scanning electron microscopy (SEM) analysis confirmed that the surface of biochar was enriched with denitrifying bacteria and provided a usable carbon source.
© The Authors, published by EDP Sciences, 2024
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