相关实验视频

Updated: Sep 13, 2025

Transformation of Organic Household Leftovers into a Peat Substitute

Transformation of Organic Household Leftovers into a Peat Substitute

Published on: July 9, 2019

由Saccharomyces cerevisiae空气发酵的水热碳化水相的肥料潜力

Zhengyi Zhang¹, Ruixi Wang¹, Yu Gu²

¹College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.

Environmental research

|July 27, 2025

概括

来自城市污泥的水热碳化水相 (HTC-AP) 通过有氧发酵被转化为液体肥料. 这种可持续的过程有效地去除了碳和营养物质,产生了一种非植物毒性肥料,增强了种子发芽.

科学领域:

环境科学环境科学
生物技术是生物技术.
农业科学农业科学

背景情况:

城市污泥对废物管理构成了重大挑战.
水热碳化 (HTC) 产生了富含有机化合物的水相 (HTC-AP).
价值化HTC-AP对于可持续的废物管理和资源回收至关重要.

研究的目的:

通过有氧发酵 (AF) 将来自城市污泥的HTC-AP转化为液体肥料.
评估AF期间营养物质移除和保留的效率.
评估发酵产品的植物毒性和促进植物生长的潜力.

主要方法:

使用Saccharomyces cerevisiae在30°C进行72小时的HTC-AP的有氧发酵.
优化发酵条件,使用6%的注射剂和50g/L的初始COD.
碳减排,营养物质去除 (N,P) 和营养物质保留的分析.
种子发芽测试以确定植物毒性和发芽指数.
转录组分析以调查代谢途径.

主要成果:

实现了69.5%的碳减排和大量的总 (70.9%) 和总 (94.3%) 的去除.
液体肥料中 (976.7 mg/L) 和 (27.6 mg/L) 的高保留率.
发酵HTC-AP的发芽指数>70%,表明没有植物毒性,增强了种子发芽.
转录组学揭示了代谢变化,包括糖解基因下调和脂肪酸降解基因上调.

结论:

有氧发酵是一种有效的方法,可以将HTC-AP转化为有价值的液体肥料.
该过程有助于废物管理和资源回收,与循环经济原则保持一致.
由此产生的肥料对植物生长是安全的,可以增强种子发芽.

关键词:

水相水相是水相中的一种.热水碳化碳化是一种热水碳化过程.市政污泥城市污泥这种植物是Saccharomyces cerevisiae.种子的发芽种子的发芽对转录组进行分析.

更多相关视频

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Published on: June 15, 2014

Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol

Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol

Published on: October 24, 2016

相关概念视频

Microbial Fermentation

Microbial Fermentation

Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...

Fates of Pyruvate

Fates of Pyruvate

Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...

Environmental Applications of Microorganisms

Environmental Applications of Microorganisms

Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...