逐步暴露于高水平的红素对无氧消化过程的作用
Yanxiang Zhang1, Chunxing Li2, Xinyu Zhu3
1School of Environmental and Material Engineering, Yantai University, Yantai 264005, China.
Molecules (Basel, Switzerland)
|August 10, 2024
概括
无氧消化有效地从废水中去除红色素 (ERY),适应高度. 虽然初始ERY暴露增加了抗生素耐药性基因,但随后的暴露减少了它们的丰富性,提供了一个可行的治疗策略.
科学领域:
- 环境微生物学环境微生物学
- 废水处理技术 废水处理技术
- 抗生素耐药性研究研究.
背景情况:
- 高水平的红色素 (ERY) 废水带来了生态风险.
- 无氧消化 (AD) 是一种有前途的方法来处理含有抗生素的废水.
- 对于ERY对抗生素耐药性基因 (ARG) 和AD中的微生物群落的影响尚不清楚.
研究的目的:
- 调查无氧消化 (AD) 在处理高水平红色素 (ERY) 废水中的适应性和效率.
- 分析抗生素耐药性基因 (ARG) 和微生物社区在逐步ERY暴露下转移的命运.
- 了解ERY对AD中甲生产途径的影响.
主要方法:
- 一个AD反应堆逐步暴露在ERY (0500 mg/L) 的度上升.
- 监测ERY去除效率和甲 (CH4) 生产的情况.
- 统治性ARG (ermB, mefA) 的量化和微生物社区结构的分析.
- 评估甲基生成途径 (乙类与类).
主要成果:
- 在初始低水平ERY暴露后,AD表现出适应高ERY度 (500 mg/L) 的能力,并保持有效的CH4产量.
- 无论ERY的初始度如何,都实现了高ERY去除效率 (>94%).
- 最初的ERY暴露增加了ARG总丰度,但重新暴露导致ARG维持的减少.
- 艾瑞抑制了乙类甲基生成,同时增强了性甲基生成.
结论:
- 无氧消化可以有效地适应处理高水平的红色素发酵废水.
- 在AD过程中显著地去除ERY,并影响ARG动态,可能减少它们的扩散.
- 通过偏好性甲生成而不是乙类甲生成,ERY改变了微生物的新陈代谢.
更多相关视频
05:46Identification of Pharmaceuticals in The Aquatic Environment Using HPLC-ESI-Q-TOF-MS and Elimination of Erythromycin Through Photo-Induced Degradation
Published on: August 1, 2018
13.0K
11:31Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
Published on: July 13, 2012
33.8K
相关概念视频
Sulfur Assimilation
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to become...
Metabolism of Chemolithotrophs
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation. However, because inorganic electron donors...
Redox Reactions
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
Redox Reactions
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
Oxidation and Reduction of Organic Molecules
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
The removal of an electron from a molecule, results in a...
Redox Titration: Overview
Redox titration is a chemical analysis technique used to determine the concentration of an unknown substance by measuring the electron transfer in a redox (reduction-oxidation) reaction. The process involves gradually adding a titrant with a known concentration of an oxidizing or reducing agent, to the analyte, the solution with an unknown concentration, until reaching the endpoint, which indicates the completion of the reaction between the two substances. Ensuring the analyte is in a single...
