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Full-Text Articles in Social and Behavioral Sciences

Challenges And Security Strategies Of China’S Critical Metals Supply For Carbon Neutrality Pledge, Weiqiang Chen, Peng Wang, Weiqiong Zhong Nov 2022

Challenges And Security Strategies Of China’S Critical Metals Supply For Carbon Neutrality Pledge, Weiqiang Chen, Peng Wang, Weiqiong Zhong

Bulletin of Chinese Academy of Sciences (Chinese Version)

The grand transition to low-carbon energy system is essential to bend the growing carbon emission and further achieve the dual carbon goals. Critical metals such as rare earth elements, lithium, cobalt, nickel, and platinum are widely considered as the material base to support low-carbon technologies. However, given the supply of those metals are scarce and risky, the emerging conflicts between their supply and demand have spurred global attention and competition among countries. This study aims to explore the linkage between critical metals and low-carbon energy systems with a particular focus on the bottlenecks of China's supply chains of those critical …


Typical Pathway To Carbon Neutrality For Urban Smart Energy Systems—Case Study Of Macao Special Administrative Region, Yonghua Song, Hongcai Zhang, Ge Chen Nov 2022

Typical Pathway To Carbon Neutrality For Urban Smart Energy Systems—Case Study Of Macao Special Administrative Region, Yonghua Song, Hongcai Zhang, Ge Chen

Bulletin of Chinese Academy of Sciences (Chinese Version)

China's ambitious goal "strive to peak carbon emissions before 2030 and achieve carbon neutrality before 2060" not only shows China's responsible attitude towards climate change, but also aligns with the upgrade requirement of China's economy and industries. Since cities occupy a dominant position in China's population, energy consumption, and carbon emissions, they are the main battlefield for achieving national carbon neutrality. This study first analyzes the challenges and requirements that cities' energy systems facing in order to realize carbon neutrality. Then, it takes Macao as an example to analyze the characteristics of cities' energy consumption and carbon emissions. Finally, it …


Global Technology Of Ocean Carbon Sequestration Based On Patent Analysis, Tianyue Peng, Dehao Tang, Liqiang Liu, Bing Han, Benduo Zhu Sep 2022

Global Technology Of Ocean Carbon Sequestration Based On Patent Analysis, Tianyue Peng, Dehao Tang, Liqiang Liu, Bing Han, Benduo Zhu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The ocean is the largest and most active carbon reservoir in the world. Through ocean-atmosphere exchange and the photosynthesis of marine plants, the uptake of carbon dioxide (CO2) by the ocean is much greater than that by soil and vegetation on terrestrial areas. This is essential to mitigate and ameliorate today's global warming which is caused by rising atmospheric CO2 concentration. Therefore, to achieve the goal of "carbon neutrality" around the country, it is an effective approach to sequester CO2 in the ocean. This paper summarizes the technical application scope and methods of ocean carbon sequestration. By analyzing correlative patents …


Systematic Study On Carbon Emission Reduction Of Municipal Solid Waste Treatment, Jisheng Long, Hailiang Du, Xin Zou, Jingying Huang Aug 2022

Systematic Study On Carbon Emission Reduction Of Municipal Solid Waste Treatment, Jisheng Long, Hailiang Du, Xin Zou, Jingying Huang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Under the context of China's carbon peak and carbon neutrality, the treatment of municipal solid waste (MSW) is facing new challenge to reduce carbon emission. This study suggests that significant carbon emission reduction and dual cycle of mass and energy can be realized, under the context of MSW classification, by the collaborative treatment of multi-source solid waste in Eco-Industrial Park. Results showed that in 2020, the incineration and landfilling of MSW in China reduced 5.18 million tons of CO2 emission, at the same year, 15 million tons of CO2 emission could have been reduced if the wet waste was treated …