相关实验视频

Updated: May 23, 2025

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Published on: May 15, 2017

在用MnX-GAC (X=Fe或Zn) 增强的建筑湿地中选择性去除:性能,机制和去除途径

Deliang Chen¹, Xianwen Fang², Lu Zhao²

¹School of Environment and Geography, Qingdao University, Qingdao, 266071, China.

Journal of environmental management

|May 21, 2025

概括

颗粒状活性碳复合材料 (MnX-GAC) 增强了废水处理的建筑湿地. 这提高了去除的效率,并选择性地增加了气的产量,同时减少了温室气体排放.

科学领域:

环境工程环境工程
水处理技术水处理技术
生物地质化学循环的过程

背景情况:

建筑湿地 (CWs) 在废水处理方面是有效的,但由于低的脱效率和温室气体排放而扎.
提高CW中基质和微生物之间的协同作用是克服这些局限性的关键.
颗粒活性炭 (GAC) 是一种常见的CW基板,但其性能可以提高.

研究的目的:

开发和评估新型复合材料填充剂 (MnX-GAC) 以提高去除和减少CW中的温室气体排放.
研究MnX-GAC对微生物群落和CW中的转化途径的影响.
评估MnX-GAC在促进选择性去除和N2选择性的效率.

主要方法:

制备颗粒状活性碳支持的Mn基复合材料填充剂 (MnX-GAC,X=Fe或Zn).
将MnX-GAC纳入建筑湿地的上下部分.
对去除效率,N2O排放,微生物群落结构 (宏基因组分析) 和功能基因丰度的分析.

主要成果:

MnX-GAC填充剂显著提高了总去除效率,达到77.1%.
使用MnX-GAC建造的湿地减少了氧化 (N2O) 排放,并增加了43.4%的 (N2) 选择性.
MnX-GAC增强了微生物物种间电子转移,刺激了脱微生物 (Anaerolinea,Thauera),并增加了关键转化基因的丰富性.

结论:

MnX-GAC复合填充剂是一种有前途的策略,可以提高建筑湿地的选择性除性能.
增强的性能归因于改善的微生物活动,电子转移和优化的转化通路.
这种方法为高效的废水处理和缓解CWs温室气体排放提供了一个新的解决方案.

关键词:

细胞外电子转移细胞外电子转移微生物社区的微生物社区.在MnX-GAC修改矩阵中.的转化途径转化途径选择性去除的方法

更多相关视频

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

Author Spotlight: Scaling Microalgal Biotechnology for Enhanced Biomethane Production

Author Spotlight: Scaling Microalgal Biotechnology for Enhanced Biomethane Production

Published on: March 22, 2024

相关概念视频

Comparative Excretory Systems

Comparative Excretory Systems

Animals have evolved different strategies for excretion, the removal of waste from the body. Most waste must be dissolved in water to be excreted, so an animal’s excretory strategy directly affects its water balance.

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...

The Nitrogen Cycle

The Nitrogen Cycle

Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...