接触时间和溶解氧度通过转移微生物代谢偏好在高速接触稳定过程中调节碳捕获
Dongyi Li1, Ruize Gu1, Tongtong Liu1
1State Key Laboratory of Urban-rural Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin 150090, China.
Bioresource technology
|September 3, 2025
概括
高速接触稳定 (HiCS) 有效地从废水中捕获碳. 优化接触时间和溶解氧度是最大限度地捕获碳并防止重新释放的关键.
科学领域:
- 环境科学
- 微生物学
- 生物技术
背景情况:
- 废水处理需要有效的碳捕获方法.
- 高速接触稳定 (HiCS) 过程提供了高能效的碳捕获.
- 了解HiCS中的参数交互对于优化至关重要.
研究的目的:
- 研究接触时间 (Tc) 和溶解氧度 (DOc) 对HiCS的影响.
- 分析碳流,代谢途径和微生物群体的动态.
- 确定最大化碳捕获效率的最佳条件.
主要方法:
- 对Tc (10-40分钟) 和DOc (<0.2,0.5,1.0毫克L-1) 的系统研究.
- 分析碳流,代谢途径和微生物群体结构.
- 通过细胞外聚合物物质 (EPS) 介导的生物分离量化碳捕获效率.
主要成果:
- HiCS在20分钟内实现了快速碳捕获;较长的时间导致重新释放.
- 溶解氧度显著影响了碳流和通路 (p < 0.05).
- 在最佳条件下 (Tc 20分钟,DOc 0.5毫克L-1),碳捕获效率为49%±6%.
结论:
- 溶解氧度是HiCS性能的一个关键因素.
- 随着DOc的增加,碳捕获途径从吸收/储存转向氧化/生物质形成.
- 优化的HiCS参数为有效的废水碳管理提供了可行的策略.
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