通过合作伙伴甲氧化剂促进的微空气环境中高效的化物减少
Pan-Long Lv1, Chuan Jia1, Chi-Hang Wei1
1Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, Shaanxi Province, China.
Journal of hazardous materials
|February 4, 2024
概括
化物减少,通常是无氧的,在使用甲的微空气条件下是有效的. 微量氧增强了酸盐的去除,而较高的水平则抑制了它,为生物修复提供了新的见解.
科学领域:
- 环境微生物学环境微生物学
- 生物修复是一种生物修复.
- 生物地质化学生物地质化学
背景情况:
- 过酸盐 (ClO4-) 降解通常需要无氧条件.
- 甲 (CH4) 是生物修复的潜在电子供体.
- 微空气环境对微生物过程提出了独特的挑战.
研究的目的:
- 在微空气环境中使用甲 (CH4) 作为电子捐赠体来研究高效的酸盐 (ClO4-) 减少.
- 阐明氧气在百酸盐还原的动力学中的作用.
- 了解在不同氧气水平下涉及到高酸盐去除的微生物机制.
主要方法:
- 使用基于CH4的生物膜进行化物减少实验.
- 在不同氧度下测量过酸盐去除流量.
- 使用分子技术和代谢途径分析分析了微生物的贡献 (ANME古生物,甲氧化剂,缩细菌).
主要成果:
- 达到2.18g/m2·d的最大化物去除流量.
- 通过微量氧观察到增强的酸盐降解率,但在 > 2 mg/L 的水平上抑制.
- 证明了厌氧甲变性 (ANME) 古代生物通过逆甲生成提供>80%的电子,用于通过厌氧的方式减少甲酸盐.
- 确定了微生物聚合物,通过抵御氧气冲击,在微空气条件下实现高效的化物减少.
结论:
- 微空气条件可以支持使用甲有效的生物化物减少.
- 氧气起着双重作用,在微量水平上增强了减少,但在较高度下抑制了它.
- 微生物联盟,包括ANME古生物和甲氧化剂,是消除低毒环境中的酸盐的关键,提供了新的生物修复策略.
相关概念视频
Radical Oxidation of Allylic and Benzylic Alcohols
2.0K
Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...
2.0K
Oxidation of Alcohols
13.1K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
The process of oxidation in a chemical reaction is observed in any of the three forms:
13.1K
Oxidation-Reduction Reactions
65.0K
Oxidation–Reduction Reactions
65.0K
Bioremediation
18.4K
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.
18.4K
Oxymercuration-Reduction of Alkenes
7.5K
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
7.5K
Oxidation and Reduction of Organic Molecules
6.6K
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...
6.6K


