从人类尿液中提取营养的电化学回收与生物气升级相结合
Hanwoong Kim1, Huiju Park2, Kwiyong Kim3
1Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
Bioresource technology
|January 6, 2024
概括
这项研究将尿液营养回收与生物气升级相结合. 在二氧化碳吸收后从消耗的尿液中回收氨,比使用水解尿液更有效地产生液体肥料.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 可持续化学 可持续化学
背景情况:
- 人类尿液是氨的丰富来源,是一种有价值的营养素.
- 生物气的升级利用了二氧化碳,由此产生的消耗尿液具有改变的特性.
- 电化学方法提供了从废水中恢复营养的潜力.
研究的目的:
- 研究从人类尿液中电化学回收总氨 (TAN).
- 为了比较二氧化碳吸收后水解尿液 (HU) 和消耗尿液 (SU) 的TAN回收效率.
- 评估将营养回收与生物气升级整合到循环经济原则中的可行性.
主要方法:
- 使用的水解尿液 (HU) 和消耗的尿液 (SU) 作为原料.
- 应用了变化的电流密度 (13-77 A/m2) 用于TAN.的电度.
- 进行了合成和真实人类尿液的实验.
- 基于TAN回收和能源效率的优化电流密度.
主要成果:
- 在不同的电流密度下,从HU和SU实现了有效的TAN回收.
- 较高的电流密度导致更高的TAN丰富系数 (2.1-3.3倍).
- 与52A/m2的HU相比,消耗尿液 (SU) 显示出优异的TAN回收 (3.7倍丰富,1.6M TAN) 和能源效率.
- 从SU中回收的TAN缩物适合用于液体肥料应用.
结论:
- 将电化学营养回收与生物气升级相结合是一个可行的策略.
- 消耗的尿液是TAN电度的水解尿液比更有利的原料.
- 这种综合方法提高了尿液的价值化,并促进了循环经济.
相关概念视频
00:46Bioremediation
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
01:20Overview of Nitrogen Metabolism
7.9K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.9K