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Wang X, Cheng H, Ye G, Fan J, Yao F, Wang Y, Jiao Y, Zhu W, Huang H, Ye D. Key factors and primary modification methods of activated carbon and their application in adsorption of carbon-based gases: A review. CHEMOSPHERE 2022; 287:131995. [PMID: 34509016 DOI: 10.1016/j.chemosphere.2021.131995] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/26/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
To achieve carbon neutrality, it is necessary to control carbon-based gas emissions to the atmosphere. Among the various carbon-based gas removal technologies reported to date, adsorption is considered one of the most promising because of its economic efficiency, reusability, and low energy consumption. Activated carbon is widely used to treat different types of carbon-based gases owing to its large specific surface area, abundant functional groups, and strong adsorption capacity. This paper reviews the recent research progress into activated carbon as an adsorbent for carbon-based gases. The key factors (i.e., specific surface area, pore structure, and surface functional groups) affecting the adsorption of carbon-based gases by activated carbon were analyzed. The main methods employed to modify activated carbon (i.e., surface oxidation, surface reduction, loading materials, and plasma modification methods) to improve its adsorption capacity are also discussed herein, along with the targeted applications of such material in the adsorption of different types of carbon-based gases (such as aldehydes, ketones, aromatic hydrocarbons, halogenated hydrocarbons, and carbon-based greenhouse gases). Finally, the future development directions and challenges of activated carbon are discussed. Our work will be expected to benefit the development of activated carbon exhibiting selective adsorption properties, and reduce the production costs of adsorbents.
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Affiliation(s)
- Xiaohong Wang
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Hairong Cheng
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Guangzheng Ye
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Jie Fan
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Fan Yao
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Yuqin Wang
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Yujun Jiao
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Wenfu Zhu
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China
| | - Haomin Huang
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, 510006, Guangzhou, China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 510006, Guangzhou, China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, 510006, Guangzhou, China.
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, 510006, Guangzhou, China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 510006, Guangzhou, China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, 510006, Guangzhou, China
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