Shanghai Jiaotong King Ruzhu and Ge Tianshu team reviewed the progress of direct air capture carbon dioxide research progress in the adsorption method

Recently, the Item Innovation Team of the Institute of Refrigeration and Low -temperature Engineering of the School of Mechanical and Power Engineering of Shanghai Jiaotong University has published the relevant direct air capture carbon dioxide comprehensive description of direct air capture carbon dioxide thesis in Direct Air Capture By Adsorption in the International Academic Journal Institute of Machinery and Lower. The authors are assistant professors of Zhu Xuancan, Institute of Refrigeration and Low -temperature Engineering, and the author is Professor Ge Tianshu and Professor Wang Ruzhu. This research can provide reference for researchers who are concerned about global energy and environmental issues, and provide reference guidance for further deployment of carbon dioxide negative emissions technology.

In order to achieve the 1.5 ° C temperature rise target, direct air capture (DAC) is considered an irreplaceable negative discharge technology. The adsorption method DAC technology has recently achieved a large breakthrough in the following aspects: determining that amino -based functionalized porous materials are used as the main DAC adsorbent. ; Reliable molding methods such as granules, hollow fibers, extrusion, 3D printing, static spinning, etc., prepare the well -structured DAC adsorbent, reduce the resistance of the quality; Development, the influence mechanism of water on the adsorption process on the extremely thin CO2 conditions is clearer; DAC adsorbents have great improvement ; Adsorption method DAC technology has been applied to Power-TO-X, closed space CO2 control, agricultural greenhouse, mineralization, microalgae breeding and other fields.

Aimen functional material adsorption of carbon dioxide schematic diagram in air

The thesis describes detailed descriptions of the development of materials DAC, adsorbing agent molding, original characteristics, adsorption mechanism simulation, process design, system integration, and technical and economic analysis. Development, especially amine functional porous silicon, zigzag, organic metal frame, porous carbon, resin and laminar dual -metallic hydroxide as air capture materials. Correspondence and nature of nature. In order to improve the technical feasibility of DAC, the paper states that it is necessary to develop a comprehensive consideration of comprehensive consideration of adsorption research and separation process. In addition, the current research also lacks technical and economic analysis of the large -scale application of adsorption law DAC. The article summarizes the key indicators to evaluate the effectiveness of the DAC adsorbent, including the effective adsorption amount, adsorption and reconciliation dynamic dynamics, cycle or regeneration of CO2 in the existence of adsorbents in other gases in other gas existence. The required energy, chemical stability, the mechanical strength of the long -term cycle, the performance of the adsorbent in the wide temperature and humidity range, and the economic environment feasibility based on the entire life cycle assessment. The final assessment of the adsorbent requires comprehensive analysis of the material structure in the process (such as particles, fibers and monomers), possible circulating configurations (such as temperature, pressure, and concentration change), and the structure of adsorption unit (such as fixed beds, fluidized beds, rotation, rotation bed). In order to meet the current and future carbon capture needs, the paper states that it is necessary to cooperate with the development of new materials, equipment and systems.

The research work has been funded by the National Natural Science Foundation of China, the Shanghai Agricultural Science and Technology Plan Project, the Shanghai Science and Technology Innovation Action Plan Project, and the Shanghai Science and Technology Commission project.

The Innovative Team for Energy (Water & Air) led by Professor Wang Ruzhu (Water & Air) is committed to solving the cutting-edge basic scientific issues and key technologies in the field of energy, water, and air.解决方案，推动相关领域取得突破性进展，近年来在Joule、Energy & Environmental Science、Advanced Material、Angewandte Chemie-International Edition、Matter、ACS Central Science、ACS Energy Letters、Nature Communication等国际跨学科交叉高水平期刊Published more than 30 papers.

Supply unit: School of Mechanical and Power Engineering

Editor in charge: Qi Jie

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