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| Simultaneous Removal of SO2 and NOx Using Steel Slag Slurry Combined with Ozone Oxidation | |
| Liu, Xiaolong1; Zou, Yang1; Geng, Ran1,2; Zhu, Tingyu1,3; Li, Bin2 | |
| 2021-11-02 | |
| Source Publication | ACS OMEGA
 |
| ISSN | 2470-1343 |
| Volume | 6Issue:43Pages:28804-28812 |
| Abstract | In this work, steel slag slurry was used in combination with O-3 oxidation for the simultaneous removal of SO2 and NOx in a laboratory-scale wet flue gas desulfurization process. The effects of the oxidation temperature, steel slag concentration, initial SO2 concentration, and pH value on the desulfurization and denitrification efficiencies were studied. The results showed that the highest NOx removal efficiency occurred at an oxidation temperature of 90 degrees C. With an increase of the oxidation temperature above 90 degrees C, the denitrification efficiency decreased due to the decomposition of N2O5. The effect of the SO2 concentration on denitrification was complicated. When the concentration of SO2 was 500 ppm, generation of SO32- promoted the absorption of NO2. However, higher SO2 concentrations strengthened the competitive absorption of SO2 and NOx. In the pH range of 8.5-4.5, the denitrification efficiency was maintained at about 96%. The component analyses of the aqueous solution and the solid residue were conducted to investigate the compositions of the absorption products. The results showed that NO3- and SO42- were the major anions in the aqueous solution. The nitrogen balance was analyzed to be 95.8%, clearly illustrating the migration and transformation path of nitrogen. In the solid residue, most alkaline substances were consumed, and the final products were mainly CaSO4 and FeO. Accordingly, the reaction mechanism of simultaneous desulfurization and denitrification using steel slag combined with ozone oxidation was proposed. |
| DOI | 10.1021/acsomega.1c03572 |
| Language | 英语 |
| WOS Keyword | FLUE-GAS ; SIMULTANEOUS ABSORPTION ; SULFUR-DIOXIDE ; FLY-ASH ; NH3 ; DESULFURIZATION ; REDUCTION ; INJECTION ; SORBENTS ; OXIDES |
| Funding Project | National Natural Science Foundation of China[51978644] ; National Key Research and Development Program of China[2018YFC0213400] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| Funding Organization | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| WOS ID | WOS:000714105800034 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/50964 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Liu, Xiaolong; Zhu, Tingyu |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China 2.Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Xiaolong,Zou, Yang,Geng, Ran,et al. Simultaneous Removal of SO2 and NOx Using Steel Slag Slurry Combined with Ozone Oxidation[J]. ACS OMEGA,2021,6(43):28804-28812. |
| APA | Liu, Xiaolong,Zou, Yang,Geng, Ran,Zhu, Tingyu,&Li, Bin.(2021).Simultaneous Removal of SO2 and NOx Using Steel Slag Slurry Combined with Ozone Oxidation.ACS OMEGA,6(43),28804-28812. |
| MLA | Liu, Xiaolong,et al."Simultaneous Removal of SO2 and NOx Using Steel Slag Slurry Combined with Ozone Oxidation".ACS OMEGA 6.43(2021):28804-28812. |
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