通过分层的双氧化物支持的碳点增强的固定来减少农田的损失
Yixin Yan1, Wei Wang1, Fan Liu1
1School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China.
Chemosphere
|January 14, 2024
概括
一种新的吸附剂,碳点在Ca/Al层状双氧化物 (CDs@Ca/Al-LDHs) 上支,有效地使土壤和水中的氨固定. 这种环保材料与农田应用的传统选择相比,提供了更高的性能.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 土壤科学 土壤科学
背景情况:
- 农田中的氨 (NH4+) 污染给环境带来了挑战.
- 开发具有成本效益和环保的氨吸附剂至关重要.
- 现有的吸附剂,如焦石和生物炭,在容量和效率上都有局限性.
研究的目的:
- 开发和评估一种用于在水和土壤环境中固定氨的新型吸附剂.
- 研究新材料的吸附机制和性能.
- 评估吸附剂在过度肥沃的农田中减轻氨污染的潜力.
主要方法:
- 合成了Ca/Al分层的双氧化物支持的碳点 (CDs@Ca/Al-LDHs).
- 在水溶液和土壤环境中进行吸附能力测试.
- 在30天的时间里进行液试验,以评估氨和酸盐的减少.
- 化实验,以评估抑制氨挥发和化.
主要成果:
- CDs@Ca/Al-LDHs的氨吸附能力明显高于热和生物炭.
- 负电荷的碳点和正电荷的离子之间的静电相互作用被确定为主要的吸附机制.
- 漂水实验显示,的累积减少为6.3%,酸盐的累积减少为9.7%.
- 化研究证实了复合物通过固定土壤中的氨来抑制氨挥发和化的能力.
结论:
- CDs@Ca/Al-LDHs是农业环境中过量氨的有希望的,具有成本效益和环保的吸收剂.
- 这种材料提供了一个可行的解决方案,可以减少营养损失和过度肥沃的农田造成的环境污染.
- 这项研究通过先进的材料应用,为可持续的农业实践做出了贡献.
相关概念视频
Overview 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
The Nitrogen Cycle
52.2K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
52.2K


