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基介质修饰聚氨泡的机制,用于增强酸降解和脱化
Wenjie Xu1, Xinyue Lu2, Xiaohui Tang3
1School of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, China; Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
使用化硫酸 (ASC) 改性聚氨泡载体的固定生物薄膜反应器显著改善了酸的减少和脱. 这些类介质增强了微生物电子转移和污染物去除效率.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 酸 (NB) 和酸 (NO3-) 是常见的环境污染物.
- 固定生物膜 (I-BF) 反应器在废水处理中是有效的.
- 在I-BF反应堆中增强电子转移对于污染物降解至关重要.
研究的目的:
- 调查9,10-氨基-2-硫化 (ASC) 改性聚氨泡 (PUF-ASC) 载体对NB减少和脱的作用.
- 阐明因介质影响生物膜性能和微生物群落的机制.
主要方法:
- 使用的I-BF反应堆与PUF-ASC载体用于NB减少和脱.
- 进行电化学试验以评估电子转移和微生物活动.
- 使用分子技术分析微生物社区结构和代谢途径.
主要成果:
- PUF-ASC载体显著提高了NB减少率 (1.46倍) 和NO3-N去除率 (1.55倍).
- 类介质促进了细胞外聚合物物质 (EPS) 的分泌,加速了NADH生成,并促进了微生物电子运输系统活动 (ETSA).
- 参与电化学活动,NB降解和脱的关键品种 (例如,Pseudomonas,Diaphorobacter,Acinetobacter) 的数量增加.
结论:
- 子介质促进了I-BF反应堆中NO3--N和NB减少的电子获取.
- 对PUF载体的ASC修改改变了细菌群体结构和代谢途径,以改善污染物去除.
- 这项研究突出了子修饰载体在先进废水处理应用中的潜力.
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