在中国和全球范围内,化温室气体减排潜力和路线
Fuli Bai1, Pengnan Jiang1, Minde An2
1College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.
Journal of environmental management
|March 1, 2025
概括
到2060年,中国可以大幅减少62%-74%的化气体 (F-气体) 排放,减轻气候变化. 生命周期结束管理等具有成本效益的措施具有很高的潜力,而电子行业可能需要推迟减排方法.
科学领域:
- 环境科学 环境科学
- 气候变化缓解缓解 气候变化缓解
- 温室气体排放量 温室气体排放量
背景情况:
- 化气体 (F-气体) 是一种强大的温室气体,其排放量迅速增加.
- 中国2035年国家确定的贡献和碳中和目标需要评估F气减排战略.
- 了解F气减排对气候和经济的影响对于政策制定至关重要.
研究的目的:
- 评估中国F气体的减缓潜力和相关成本.
- 评估F气排放减少对气候和经济的影响.
- 确定具有成本效益的F气减排措施和特定部门的战略.
主要方法:
- 利用已建立的DECAF模型模拟中国的F气减排场景.
- 从2021年到2060年,量化累积的F气减排潜力和相关成本.
- 分析了不同部门的贡献,特别是产品的使用和生命周期结束管理.
主要成果:
- 中国可以在2021-2060年之间实现42-50千兆CO2eq (62%-74%的减少) 的领土累积F气减排.
- 减排成本在30-44美元/CO2eq之间,剩余的排放量在2060年为143-390CO2eq/年.
- 产品使用部门占总减排的63%-67%,成本低于16美元/二氧化碳等值.
结论:
- 生命周期末期管理是一种非常具有成本效益的F气减排措施,具有显著的减排潜力.
- 由于相关成本较高,建议推迟电子行业的减排时间表.
- 加快HFC的减少和在中国扩大F气减排可以避免2100年全球气温的显著上升.
更多相关视频
07:06Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique
Published on: September 28, 2022
1.5K
09:03Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace
Published on: September 6, 2018
12.1K
相关概念视频
Global Climate Change
24.1K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.1K
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
5.8K
Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
5.8K
Radical Substitution: Halogenation of Alkanes and Alkyl Substituents
7.8K
In the presence of heat or light, alkanes react with molecular halogens to form alkyl halides by a substitution reaction called radical halogenation. This reaction has three steps: initiation, propagation, and termination, as seen in the radical chlorination of methane to produce methyl chloride.
In the initiation step of the reaction, the chlorine molecule undergoes homolytic cleavage in the presence of light or heat, forming two highly reactive chlorine radicals. Propagation occurs in two...
In the initiation step of the reaction, the chlorine molecule undergoes homolytic cleavage in the presence of light or heat, forming two highly reactive chlorine radicals. Propagation occurs in two...
7.8K
Radical Halogenation: Thermodynamics
3.6K
The thermodynamic favorability of a reaction is determined by the change in Gibbs free energy (ΔG). ΔG has two components- enthalpy (ΔH) and entropy (ΔS). The entropy component is negligible for alkane halogenation because the number of reactants and product molecules are equal. In this case, the ΔG is governed only by the enthalpy component. The most crucial factor that determines ΔH is the strength of the bonds. ΔH can be determined by comparing the energy...
3.6K
