Dual-pathway degradation of TNT in soil by Fe0-activited persulfate: From mechanism to pilot-scale application
文献类型：期刊论文
| 作者 | Li, You2,3; Luo, Junpeng1,2,3; Liao, Xiaoyong2,3; Cao, Hongying2,3; Pan, Junting4; Li, Haonan2,3 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2025-09-15 |
| 卷号 | 520页码:165840 |
| 关键词 | Trinitrotoluene (TNT) Persulfate Chemical oxidation Mechanism Soil |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2025.165840 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The escalation of international armed conflicts has exacerbated the environmental hazards posed by the leakage and remnants of military energetic compounds, presenting substantial challenges to post-war reconstruction efforts. The development of effective remediation technologies for energetic compound contamination is therefore imperative. This study investigates the degradation effects of various activated persulfate (PS) treatments on soil-bound trinitrotoluene (TNT), exploring the oxidative degradation process and mechanisms under optimal conditions, and conducted a pilot-scale experiment to verify the practical application of the technology. Results indicate that Fe0 activated PS exhibits the highest efficiency in degrading TNT in soil, achieving a removal rate of up to 97.0 % under conditions of a soil-to-water ratio of 1:5, PS:Fe0 = 1:3, initial PS concentration of 0.10 mol/L, pH = 6, and a temperature of 55 degrees C. The oxidation process via Fe0 activated PS generates four active radicals: SO4 center dot- , center dot OH, O2 center dot- , and 1O2, with SO4 center dot- and O2 center dot- playing pivotal roles as key radicals. Postoxidation, the soil exhibits an increase in high-valence iron content, while C-C, C--C, C-H, and C-O fractions decrease. Coupled with mass spectrometry analysis, the study identifies TNT's oxidation intermediates, unveiling two degradation pathways: direct oxidation and reduction-oxidation pathways. Additionally, the pilotscale experiment confirmed that Fe0 activated PS is capable of effectively remediating TNT-contaminated soil. These findings provide deeper insights into the impact, mechanisms, and practical effectiveness of activated PS in degrading TNT in soil, offering a new theoretical foundation and technical approach for remediating soils contaminated by energetic compounds. |
| URL标识 | 查看原文 |
| WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; HEAVY-METALS ; FIELD-SCALE ; OXIDATION ; ACTIVATION ; 2,4,6-TRINITROTOLUENE ; REDUCTION ; REMOVAL ; 6-TRINITROTOLUENE ; BIODEGRADATION |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001539045300001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215629]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Luo, Junpeng; Liao, Xiaoyong |
| 作者单位 | 1.Henan Acad Sci, Inst Geog Sci, Zhengzhou 450052, Henan, Peoples R China; 2.Beijing Key Lab Environm Damage Assessment & Remed, Beijing 100101, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, You,Luo, Junpeng,Liao, Xiaoyong,et al. Dual-pathway degradation of TNT in soil by Fe0-activited persulfate: From mechanism to pilot-scale application[J]. CHEMICAL ENGINEERING JOURNAL,2025,520:165840. |
| APA | Li, You,Luo, Junpeng,Liao, Xiaoyong,Cao, Hongying,Pan, Junting,&Li, Haonan.(2025).Dual-pathway degradation of TNT in soil by Fe0-activited persulfate: From mechanism to pilot-scale application.CHEMICAL ENGINEERING JOURNAL,520,165840. |
| MLA | Li, You,et al."Dual-pathway degradation of TNT in soil by Fe0-activited persulfate: From mechanism to pilot-scale application".CHEMICAL ENGINEERING JOURNAL 520(2025):165840. |
入库方式： OAI收割
来源：地理科学与资源研究所
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