Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China.
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China; Shenzhen Key Laboratory of Water Resources Utilization and Environmental Pollution Control, School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
Bioresour Technol. 2024 Sep;408:131201. doi: 10.1016/j.biortech.2024.131201. Epub 2024 Aug 2.
For revealing the influence of temperature on volatile fatty acids (VFAs) generation from primary sludge (PS) during the anaerobic fermentation process facilitated by peroxymonosulfate (PMS), five fermentation groups (15, 25, 35, 45, and 55 °C) were designed. The results indicated that the production of VFAs (5148 mg COD/L) and acetic acid (2019 mg COD/L) reached their peaks at 45 °C. High-throughput sequencing technology disclosed that Firmicutes, Proteobacteria, and Actinobacteria was the dominant phyla, carbohydrate metabolism and membrane transport were the most vigorous at 45 °C. Additionally, higher temperature and PMS exhibit synergistic effects in promoting VFAs accumulation. This study unveiled the mechanism of the effect of the pretreatment of PS with PMS on the VFAs production, which established a theoretical foundation for the production of VFAs.
为了揭示在过一硫酸盐（PMS）促进的厌氧发酵过程中温度对原生污泥（PS）中挥发性脂肪酸（VFAs）生成的影响，设计了五个发酵组（15、25、35、45 和 55°C）。结果表明，VFAs（5148 mg COD/L）和乙酸（2019 mg COD/L）的产量在 45°C 时达到峰值。高通量测序技术揭示了厚壁菌门、变形菌门和放线菌门是主要的菌门，在 45°C 时碳水化合物代谢和膜转运最为活跃。此外，较高的温度和 PMS 协同作用促进了 VFAs 的积累。本研究揭示了 PS 用 PMS 预处理对 VFAs 生成的影响机制，为 VFAs 的生成奠定了理论基础。
