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在处理低COD/TN废水时,玉米装载的铁纳米颗粒增强了微藻-细菌聚合物系统中脱性能机制

Renhang Li¹, Haibo Li¹, Chao Zhang²

¹Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26, Tianjin, 300384, China.

Journal of environmental management

|September 19, 2024

概括

装在玉米上的铁纳米颗粒显著增强了低碳到废水中的微藻-细菌聚合物的脱. 这种方法提高了去除效率和微生物活动,以改善废水处理.

科学领域:

环境科学环境科学
环境生物技术环境生物技术
废水处理废水处理

背景情况:

微藻-细菌聚合物 (MABA) 用于废水处理.
在MABA中脱效率通常是有限的,特别是在低碳与 (C/N) 比率的废水中.
加强脱是有效从废水中去除的关键.

研究的目的:

研究玉米和铁纳米颗粒装载的玉米在提高MABA脱效率方面的潜力.
阐明增强型脱过程背后的机制.
为处理低C/N比率的废水提供一个可行的策略.

主要方法:

实验设置与五组:生物控制,未经处理的玉米,处理的玉米,和两种类型的铁纳米颗粒装载的玉米.
在36小时内监测酸盐- (NO3-N) 转化率.
对细胞外聚合物质 (EPS) 分泌,电化学性质,微生物代谢活性 (ATP,NADH) 和微生物社区结构的分析.

主要成果:

装有铁纳米粒子 (CFe1和CFe2) 的玉米显著加快了NO3-N转化率,CFe1更有效 (比对照组快6.2倍).
铁纳米粒子通过促进电子运输和减轻酸盐压力来减少EPS分泌.
增强了电子运输活动,微生物代谢活动,并丰富了特定的细菌类 (蛋白质细菌,病菌细菌等). 观察到的情况.

结论:

装有铁纳米颗粒的玉米有效地提高了MABAs中低C/N废水的脱化.
增强机制涉及改善EPS特征,增加电子运输,促进微生物新陈代谢和有利的微生物社区转移.
这项研究提出了一种有希望的方法来改善废水处理中的去除.

关键词:

农业废弃物农业废弃物微生物的代谢活动.纳米材料是一种纳米材料.细菌和藻类的共生.

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