如何通过调节基质新陈代谢和电子利用,在低C/N条件下增强β-环氧德克斯功能化生物炭的生物化
Hongtao Shi1, Xiaochi Feng1, Zijie Xiao1
1State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, People's Republic of China.
Environmental science & technology
|July 18, 2023
概括
用β-环氧 (BC@β-CD) 功能化的生物炭可增强废水中的去除,即使碳与 (C/N) 比率较低. 这种新材料提高了脱效率,并减少了有害的副产品.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 修复水资源的修复方法
背景情况:
- 废水中的低碳 (C/N) 比率限制了生物化效率.
- 化物和氧化等有害中间体可以在脱过程中积累.
- 有效的去除对于处理污染水至关重要.
研究的目的:
- 为了合成和评估β-cyclodextrin功能化生物炭 (BC@β-CD) 增强脱.
- 研究BC@β-CD在低C/N条件下改善脱的机制.
- 评估BC@β-CD对酸盐减少,酸盐积累和氧化排放的影响.
主要方法:
- 合成β-环氧化-功能化生物炭 (BC@β-CD).
- 应用BC@β-CD以促进*Paracoccus denitrificans*的脱,其C/N比率为4.
- 转录和酶活性分析以阐明代谢途径.
- 测量酸盐减少,酸盐积累和氧化排放.
主要成果:
- 在低C/N比率下,BC@β-CD显著提高了脱化效率 (4).
- 这种材料减少了酸盐的积累和氧化排放.
- 转录和酶分析显示增强的糖解 (EMP),酸路径 (PPP) 和三碳酸 (TCA) 循环活动.
- BC@β-CD增加了细胞内铁水平,改善了电子转移,并促进了ATP合成.
- 葡萄糖用于脱的利用率从36.37%增加到51.19%.
结论:
- 在营养有限的条件下,BC@β-CD是增强生物化的一个有希望的材料.
- 该机制涉及刺激中心代谢途径,改善电子供体生成,增强氧化酸化.
- 通过优化微生物代谢,BC@β-CD提供了一种新的废水生物修复方法.
更多相关视频
10:44Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
10.0K
07:27Author Spotlight: On-Site Biochar Production for Woody Debris Incineration in Forestry
Published on: January 5, 2024
2.7K
相关概念视频
01:15Metabolism of Chemolithotrophs
50
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.
50
01:18Amino Acid Catabolism
56
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
56
00:46Bioremediation
19.1K
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.
19.1K
01:25Lipid Catabolism
80
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
80
01:28Carbon-dioxide Fixation
42
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
42