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电刺激二甲基二硫化物的生物降解:从生物膜空间结构和关键功能基因的洞察

Jingkai Zhao¹, Xinyi Xie², Zhangyu Chen³

¹College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China; Zhejiang Ecology and Environment Group Co., Ltd., Hangzhou, 311100, China.

Environmental pollution (Barking, Essex : 1987)

|October 30, 2024

概括

电刺激增强了二甲基二硫化物 (DMDS) 的降解,使用一种新型的聚氨酸@碳纳米管生物电极. 这种先进的材料显著提高了微生物活动和降解率,用于环境控制.

科学领域:

环境科学环境科学
生物技术是生物技术.
材料科学材料科学材料科学

背景情况:

甲基二硫化物 (DMDS) 是一种有毒的,持久的含硫的VOC.
生物处理方法在DMDS降解能力方面存在局限性.
迫切需要有效的DMDS环境控制策略.

研究的目的:

使用电刺激来增强DMDS消除.
在石墨板 (GS) 上开发和评估一个多孔的聚氨酸@碳纳米管生物电极 (PANI@CNT/GS).
为了研究增强DMDS降解背后的机制.

主要方法:

在石墨板上制造PANI@CNT/GS生物电极.
用于DMDS降解的PANI@CNT/GS生物阳极与未经修改的GS生物阳极的比较.
动力学分析以确定降解速度.
生物膜表征 (细胞数量,厚度) 和功能基因注释.

主要成果:

与对照组相比,PANI@CNT/GS生物阳极显著改善了生物膜活性,氧化还原特性和DMDS降解效率.
最大降解率为0.60 mM h-1,是对照组的1.36倍.
在PANI@CNT/GS的生物膜中,活细胞的数量是PANI@CNT/GS的1.40倍,厚度为12.5%.
观察到增强的微生物运动性,活性和关键代谢基因的丰富.

结论:

电刺激有效地提高了使用PANI@CNT/GS生物阳极的DMDS降解.
PANI@CNT/GS材料通过改善生物膜结构和微生物功能来加剧降解过程.
这项研究提供了对DMDS环境修复过程强化机制的见解.

关键词:

生物膜的结构结构生物降解DMDS的生物降解电刺激是一种电刺激.电极材料是电极的材料.功能性基因是指功能性的基因.

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