Effect of far UVC pretreated dissolved organic matter on volatile disinfection byproducts abatement in real surface water disinfection process: Implications from non-targeted high-resolution mass spectrometry and interpretable machine learning
文献类型：期刊论文
| 作者 | Huang, Pengcheng3; Wang, Honglie3; Sun, Qiyuan2,3,4; Wang, Feifeng2,3,4; Guo, Guanghui1; Wang, Xiaoyan3 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 286页码:124190 |
| 关键词 | Dissolved organic matter Volatile disinfection byproducts Far UVC FT-ICR MS Machine learning |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2025.124190 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Ultraviolet (UV) pretreatment can alter the molecular components of dissolved organic matter (DOM) in raw water, thereby influencing the formation potential of disinfection byproducts (DBPs) during free chlorine disinfection of drinking water treatment. This study systematically evaluated the effect of four representative wavelengths of UV irradiation (including far UVC) on DOM components transformation and DBPs formation in real surface water. By combing Fourier transform-ion cyclotron resonance mass spectroscopy (FT-ICR MS) with interpretable machine learning, the key molecular features and phototransformation pathways responsible for DBP precursor behavior under UV irradiation were effectively identified. The results demonstrated that all the four types of UV irradiation promoted DOM transforming from high molecular weight (MW) and aromatic components to low MW and saturated one, which easily reacted with bromide ions and free chlorine to generate bromine-chlorine mixed DBPs. Notably, UV222 and UV254 tended to decompose nitrogen- and sulfur-containing components of DOM and reduce their reaction pathways, resulting in a lower yield of nitrogenous DBPs (NDBPs). By contrast, UV310 and UV365 preferred to degrade DOM components with high H/C, resulting in a high dose of carbon-containing DBPs (C-DBPs). The inhibitory effect of UV222 pretreatment on the formation of trichloronitromethane was lower than that of UV254, which could attribute to its lower capability on reducing number of chlorination reaction pathway of aromatic compounds in DOM. Nonetheless, the calculated toxicity of volatile DBPs was lower in chlorinated UV222-pretreated waters than in chlorinated raw water, indicating that UV222-pretreatment had positive effect on DBPs abatement. These findings provide practical guidance for selecting specific wavelength UV pretreatment strategies to minimize DBPs formation. This work also expands current knowledge by demonstrating the mechanistic differences in DOM phototransformation and DBPs generation across multiple UV wavelengths, advancing the field toward more targeted and efficient disinfection control strategies. |
| URL标识 | 查看原文 |
| WOS关键词 | MOLECULAR COMPOSITION ; DICHLOROACETONITRILE ; DEGRADATION ; PRECURSOR |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001540641900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215524]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 通讯作者 | Sun, Qiyuan; Wang, Feifeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Fujian Key Lab Pollut Control & Resource Reuse, Fuzhou 350117, Fujian, Peoples R China; 3.Fujian Normal Univ, Coll Environm & Resource Sci, Fuzhou 350117, Fujian, Peoples R China; 4.Fujian Coll & Univ Engn Res Ctr Municipal Waste Re, Fuzhou 350117, Fujian, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Huang, Pengcheng,Wang, Honglie,Sun, Qiyuan,et al. Effect of far UVC pretreated dissolved organic matter on volatile disinfection byproducts abatement in real surface water disinfection process: Implications from non-targeted high-resolution mass spectrometry and interpretable machine learning[J]. WATER RESEARCH,2025,286:124190. |
| APA | Huang, Pengcheng,Wang, Honglie,Sun, Qiyuan,Wang, Feifeng,Guo, Guanghui,&Wang, Xiaoyan.(2025).Effect of far UVC pretreated dissolved organic matter on volatile disinfection byproducts abatement in real surface water disinfection process: Implications from non-targeted high-resolution mass spectrometry and interpretable machine learning.WATER RESEARCH,286,124190. |
| MLA | Huang, Pengcheng,et al."Effect of far UVC pretreated dissolved organic matter on volatile disinfection byproducts abatement in real surface water disinfection process: Implications from non-targeted high-resolution mass spectrometry and interpretable machine learning".WATER RESEARCH 286(2025):124190. |
入库方式： OAI收割
来源：地理科学与资源研究所
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