Biochar addition reduces nitrogen loss and accelerates composting process by affecting the core microbial community during distilled grain waste composting
| Autor: | Shi-Peng Wang, Li Wang, Yue-Qin Tang, Cai-Hong Shen, Kenji Kida, Zhao-Yong Sun, Song-Tao Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Denitrification Nitrogen Renewable Energy Sustainability and the Environment Composting Microbiota chemistry.chemical_element Bioengineering General Medicine Metabolism pathway Pulp and paper industry Manure Soil Microbial succession chemistry Microbial population biology Charcoal Biochar Composition (visual arts) Nitrification Waste Management and Disposal |
| Zdroj: | Bioresource Technology. 337:125492 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2021.125492 |
| Popis: | This study evaluated the impact of biochar addition on nitrogen (N) loss and the process period during distilled grain waste (DGW) composting. Results from the five treatments (0, 5, 10, 15, and 20% biochar addition) indicated that 10% biochar addition (DB10) was optimal, resulting in the lowest N loss, 25.69% vs. 40.01% in the control treatment. Moreover, the DGW composting period was shortened by approximately 14 days by biochar addition. The composition of the microbial community was not significantly altered with biochar addition in each phase, however, it did accelerate the microbial succession during DGW composting. N metabolism pathway prediction revealed that biochar addition enhanced nitrification and inhibited denitrification, and the latter phenomenon was the main reason for reducing N loss during DGW composting. Based on the above results, a potential mechanism model for biochar addition to reduce N loss during the DGW composting process was established. |
| Databáze: | OpenAIRE |
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