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| Carbon consumption and regeneration of oxygen-containing functional groups on activated carbon for flue gas purification | |
| Li, Yuran1; Lin, Yuting1; Guo, Junxiang1; Xu, Zhicheng1; Wang, Bin1; Zhu, Tingyu1,2 | |
| 2021-12-02 | |
| Source Publication | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| ISSN | 0944-1344 |
| Pages | 14 |
| Abstract | High carbon consumption is an important factor restricting the wide application of activated carbon technology for flue gas purification. A fixed-bed reactor combined with a Fourier transform infrared (FTIR) spectrometer was used to explore the source of carbon consumption at various SO2 concentrations and cyclic adsorption-regeneration times. The results demonstrate that carbon consumption originates from two sources and is mainly determined by the reaction of H2SO4 and C at high SO2 concentrations and by the thermal decomposition of oxygen-containing functional groups at low SO2 concentrations. An interesting observed phenomenon is that carbon consumption does not increase as the SO2 concentration increases. The conversion mechanism reveals that carboxylic and anhydride groups are converted to phenol and quinone groups, which do not easily decompose with increasing SO2 concentration. In the process of cyclic adsorption-regeneration, it is discovered that the carbon consumption in the first cycle is several times higher than that in the following cycles due to the decomposition of functional groups from the activated carbon itself. The regeneration mechanism of functional groups has been elucidated. The carboxylic acid and the phenolic hydroxyl on the surface of activated carbon are consumed in the regeneration process and formed again from the conversion of carbonyl groups in the next adsorption process under the roles of O-2 and H2O. It is proposed that the functional groups are regenerated in the adsorption process rather than in the regeneration process. |
| Keyword | Activated carbon Carbon consumption Cyclic adsorption-regeneration Decomposition of functional groups Carbon dioxide |
| DOI | 10.1007/s11356-021-17724-8 |
| Language | 英语 |
| WOS Keyword | SELECTIVE CATALYTIC-REDUCTION ; SO2 REMOVAL ; SEMI-COKE ; MERCURY CAPTURE ; SULFUR-OXIDES ; ADSORPTION ; NO ; DESULFURIZATION ; DENITROGENATION ; PERFORMANCE |
| Funding Project | National Key R&D Program of China[2017YFC0210203] ; National Natural Science Foundation of China[U1810209] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China |
| WOS ID | WOS:000725470500013 |
| Publisher | SPRINGER HEIDELBERG |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/51301 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Li, Yuran; Zhu, Tingyu |
| Affiliation | 1.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Yuran,Lin, Yuting,Guo, Junxiang,et al. Carbon consumption and regeneration of oxygen-containing functional groups on activated carbon for flue gas purification[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021:14. |
| APA | Li, Yuran,Lin, Yuting,Guo, Junxiang,Xu, Zhicheng,Wang, Bin,&Zhu, Tingyu.(2021).Carbon consumption and regeneration of oxygen-containing functional groups on activated carbon for flue gas purification.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,14. |
| MLA | Li, Yuran,et al."Carbon consumption and regeneration of oxygen-containing functional groups on activated carbon for flue gas purification".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021):14. |
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