跨物种电子转移和微生物相互作用在一个新的Fe(II) 介导的合混合型无化系统中
Ying Wang1, Zikun Zhang1, Lan Lin1
1Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment & Ecology, Xiamen University, Xiamen, Fujian 361102, China.
Bioresource technology
|May 18, 2024
概括
铁 (II) 添加增强了合的阿纳莫克斯和混合性脱,显著提高了去除率. 这项研究揭示了Fe (II) 的存在.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 高负荷挑战了传统的废水处理.
- 亚纳莫克斯和脱是关键的去除过程.
- 优化微生物相互作用和电子转移对于效率至关重要.
研究的目的:
- 为了研究铁的协同效应 (II) 在合的anammox和混合型脱化上.
- 探索铁在增强微生物活动和物种间电子转移中的作用.
- 确定铁对细菌群体结构和去除效率的影响.
主要方法:
- 在高负载率下将anammox与混合型脱结合.
- 添加铁 (Fe) 来评估其对微生物过程的影响.
- 酶活性测定 (酸盐减少酶,酸盐减少酶,氨酸脱酶).
- 电化学实验用于研究物种间的电子转移.
- 使用高通量测序分析细菌群体组成.
- 测量去除的速度和anammox的贡献.
主要成果:
- Fe (II) 显著增强了关键酶活动,加速了ATP合成.
- Fe (II) 促进了黄单核酸的分泌,改善了电子转移能力.
- Fe(II) 将微生物群落转向了自性无化细菌和丰富的亚纳莫克斯细菌 (Candidatus_Kuenenia).
- 实现了5.88g N/L/d的高去除率,anammox的贡献为88.3%.
结论:
- 铁 (Fe) 作为关键的催化剂在合 anammox 和混合性无化.
- 增强的物种间电子转移和有利的微生物社区转移推动了改善的去除.
- 这种方法为废水处理中的有效管理提供了一个有希望的战略.
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