相关实验视频

Updated: Jan 17, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

δ-MnO₂-改性花生生物炭和酸促进了Mn(IV) 减少驱动的氧化与Cr(VI) 移除

Yue Wang¹, Yihan Bai¹, Junfeng Su¹

¹School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.

Bioresource technology

|September 18, 2025

概括

这项研究使用新型生物炭和酸加强了和的去除,实现了超过97%的和98%的减少. 该方法增强了微生物活动,以有效处理废水.

科学领域:

环境微生物学环境微生物学
环境化学环境化学
生物技术是生物技术.

背景情况:

(NH4+-N) 和 (Cr) 是影响水生生态系统的重要废水污染物.
涉及NH4+-N氧化与降解相结合的Mnammox工艺提供了一个潜在的治疗策略.
提高Mnammox的效率对于有效的污染物清除至关重要.

研究的目的:

为了研究Aromatoleum evansii MAY27在通过Mnammox.VI去除NH4+-N和Cr(VI) 的有效性.
开发和优化一种新的Mn(IV) 修饰的花生生物炭 (PSB@δ-MnO2),与酸 (HA) 结合,以提高Mnammox的性能.
阐明开发系统中污染物去除和微生物反应的基本机制.

主要方法:

对Mnammox的pH,C/N比和HA和PSB@δ-MnO2度的动力优化.
培育芳香 evansii MAY27和应用HA-PSB@δ-MnO2系统用于废水处理.
对污染物去除效率,微生物活动,电子转移,表面价值状态和基因表达的分析.

主要成果:

在优化条件下 (pH 6.5,C/N 0.5,40 mg L-1 HA,1100 mg L-1 PSB@δ-MnO2) 产生了97.03%的NH4+-N去除和18.93 mg的L-1 Mn(II) 生产.
该HA-PSB@δ-MnO2系统显著增强了微生物活动,能源生产和电子转移.
在初始低度 (<1毫克L-1) 的CrVI时,CrVI的效率超过98%和NH4+-N的效率超过93%.
通过沉分析和III/II和III的形成,证据证实了 (IV) 和 (VI) 的减少.
转录分析显示了微生物代谢的增强和Mn(IV) 减少基因的上调.

结论:

该HA-PSB@δ-MnO2系统有效地增强了Mnammox by Aromatoleum evansii MAY27用于同时去除NH4+-N和CrVI.
该研究提供了对改善微生物性能和减少污染物的机制性见解.
这种方法为处理NH4+-N和Cr(VI) 污染的废水提供了可持续的理论基础.

关键词:

氨氧化的氨氧化过程电子航天器是电子航天器.六价的六价是一种 (IV) 的减少转录组分析转录组分析

更多相关视频

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Published on: May 19, 2019

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

Published on: December 5, 2019

相关概念视频

Redox Titration: Other Oxidizing and Reducing Agents

Redox Titration: Other Oxidizing and Reducing Agents

Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...

Radical Oxidation of Allylic and Benzylic Alcohols

Radical Oxidation of Allylic and Benzylic Alcohols

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...