Process Safety and Environmental Protection最新文献

{"title":"Study on performance improvement of artificial lightweight aggregate prepared from municipal solid waste incineration fly ash","authors":"Bingjiang Chen,&nbsp;Baoju Liu,&nbsp;Lei Yang","doi":"10.1016/j.psep.2025.107568","DOIUrl":"10.1016/j.psep.2025.107568","url":null,"abstract":"<div><div>This study explored the utilization of municipal solid waste incineration ash (MSWIFA) as a raw material for the production of artificial aggregates, with performance enhancement achieved through carbonation curing and optimized binder compositions. Various testing methods were employed to evaluate the mechanical properties of the aggregates, their ability to immobilize heavy metals in MSWIFA, and their subsequent impact on mortar performance. The results showed that as the coal fly ash (CFA) content increased, the compressive strength of the artificial aggregate gradually increased. The carbonation curing shortened the curing period of MSWIFA-based artificial aggregates. The aggregates subjected to 7 d of carbonation exhibited at least a 6.90 % strength increase compared to those cured for 28 d under standard conditions. The combined use of CFA and carbonation curing enhanced the aggregates' apparent density and reduced water absorption. This improvement is attributed to the formation of calcium carbonate polymorphs and C-S-H gel, which synergistically filled pores and micro-cracks, refined the pore structure, and enhanced the interfacial transition zone. In addition, the hydration products, notably C-S-H gel, Friedel's Salt, and AFt, played a crucial role in immobilizing heavy metals, achieving stabilization efficiencies of up to 90 % for heavy metals such as Pb and Zn. The mortar mixed with carbonization-cured artificial aggregate demonstrated superior to the mortar mixed with standard-cured artificial aggregate in terms of compressive strength, gas permeability and carbonation resistance. In summary, this research provides innovative approaches for the resource utilization of MSWIFA, which can alleviate the shortage of natural aggregates and is conducive to achieving green, low-carbon and sustainable development.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107568"},"PeriodicalIF":6.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enzymatic copolymerization opens new horizons for rhizoremediation and humification of estrogenic pollutants in water-soil-crop agroecosystems","authors":"Zeyu Shi ,&nbsp;Wei Dai ,&nbsp;Qian Yin ,&nbsp;Youbin Si ,&nbsp;Bo-Ping Xiong ,&nbsp;Kai Sun","doi":"10.1016/j.psep.2025.107572","DOIUrl":"10.1016/j.psep.2025.107572","url":null,"abstract":"<div><div>Estrogenic pollutants (EPs) constitute a class of biologically potent endocrine disruptors that impair reproductive functions, trigger cardiovascular diseases, and elevate oncogenic risks in humans. Livestock and poultry manure, a major agricultural waste stream, contains significant quantities of EPs. Its extensive application in agroecosystems facilitates the uptake and acropetal movement of EPs by edible crops, thereby posing risks of human exposure via food consumption. Microbially-derived laccase, ubiquitously distributed in agroecosystems, exhibits exceptional efficacy in EP detoxification through enzymatic polymerization. By mediating copolymerization between EPs and co-substrates, the enzymatic process generates non-toxic precipitates——a mechanism validated in experimental bioremediation protocols targeting EP-contaminated water, soil, and rhizosphere environments. This process mirrors natural humification pathways, offering dual benefits of pollutant decontamination and humus-like substance formation within root-associated zones. This study summarizes the new horizons opened by microbe-produced laccase for EP rhizoremediation, organic carbon humification, and crop uptake. We briefly delineate the current status of EP soil contamination and crop accumulation in China, followed by an analysis of EP subcellular partitioning and cytotoxic effects across crop organs. Subsequently, interactions between EPs and specified root exudates at the rhizosphere microinterfaces are elucidated. Notably, enzymatic copolymerization mechanisms governing EP rhizoremediation and humification in water-soil-crop matrices are emphasized. Strategic <em>in situ</em> regulation of rhizosphere microbiome-derived laccase activity presents innovative avenues for mitigating EP pollution, accelerating biotic humification, and curbing carbon emissions. These advancements hold transformative potential for organic pollutant management, rhizosphere microenvironment optimization, and sustainable food production in modern agroecosystems.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107572"},"PeriodicalIF":6.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of highly selective olefins from pyrolyzed ground film plastics catalyzed by fishbone-based catalysts","authors":"Yue Zhang ,&nbsp;Yansen Xu ,&nbsp;Chentao Tan ,&nbsp;Roger Ruan ,&nbsp;Leilei Dai ,&nbsp;Yunpu Wang ,&nbsp;Erguang Huo ,&nbsp;Yunfeng Zhao ,&nbsp;Jian Zhang","doi":"10.1016/j.psep.2025.107565","DOIUrl":"10.1016/j.psep.2025.107565","url":null,"abstract":"<div><div>Ground film plastic, widely used in large-scale agriculture, is a major source of persistent white pollution due to its poor degradability. This work investigates the pyrolysis process of agricultural plastic mulch using a modified fishbone-derived metal catalyst combined with microwave-assisted pyrolysis. Experimental data indicate that the 5Cu/HAP fishbone catalyst exhibits optimal catalytic performance. The ideal pyrolysis conditions are: pyrolysis temperature of 550°C, catalytic temperature of 350°C, and a catalyst-to-feedstock ratio of 1:2. Under these conditions, an 80.30 wt% liquid oil yield was achieved, with maximum olefin selectivity reaching 63.92 % and a 90.80 % selectivity of C6∼C12 olefins. These results demonstrate the significant potential of catalytic pyrolysis using modified fishbone-derived metal catalysts for converting agricultural plastic waste into C6∼C12 olefins. These olefins can be further processed into high-purity chemicals like naphtha and gasoline. As olefins are also essential plastic raw materials, this approach enables a potential closed-loop film-to-olefin-to-film recycling cycle, offering a promising new pathway for the chemical recycling of plastic waste.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107565"},"PeriodicalIF":6.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Migration and transformation mechanisms of heavy metals and PAHs during hydrothermal treatment of food waste digestate","authors":"Jiaxiao Wang ,&nbsp;Lei Luo ,&nbsp;Aichu Yan ,&nbsp;Zhizhi Pan ,&nbsp;Xiaojun Zuo ,&nbsp;Zhengang Liu","doi":"10.1016/j.psep.2025.107569","DOIUrl":"10.1016/j.psep.2025.107569","url":null,"abstract":"<div><div>Hydrothermal treatment (HT) is a suitable disposal strategy for pollutant removal and nutrient recovery from food waste digestate (FWD). However, the fate of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) during HT remains poorly understood. Here, the distribution, transformation, and ecological risks of HMs and PAHs in FWD during HT were systematically investigated. The results revealed that HT immobilized most HMs in hydrochar, exhibiting enrichment factors of 79 %-116 %. The bioavailability of HMs in hydrochar was decreased significantly at 200–220 °C. Specifically, the bioavailability of As, Cd, Cu, Ni, and Pb in hydrochar was decreased by 11.9 %, 57.1 %, 100 %, 72.2 %, and 84.0 % compared with that in raw FWD, respectively. Meanwhile, HT resulted in a 40.4 % reduction of total PAH contents at 140 °C compared to FWD. The polymerization of organic matter increased the aromaticity of derived hydrochar while converting low-ring PAHs into high-ring PAHs at 160–180 °C. The maximum reduction of total PAH contents (42.7 %) occurred at 180 °C. Higher temperatures (200–220 °C) favored lignin decomposition to produce PAH precursors, which simultaneously polymerized into new PAHs. These findings provide a comprehensive understanding of HMs and PAHs transformation mechanisms during HT, offering valuable guidance for optimizing FWD management processes and ensuring the safe utilization of hydrothermal products.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107569"},"PeriodicalIF":6.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on protection strategies for the causal network of coal mine accidents: Considering node importance and cost investment","authors":"Yi Zhang ,&nbsp;Shuang Li","doi":"10.1016/j.psep.2025.107556","DOIUrl":"10.1016/j.psep.2025.107556","url":null,"abstract":"<div><div>In response to the frequent occurrence characteristics of coal mine accidents, identifying and preventing critical causal nodes is crucial for ensuring the safe production of coal mines. While coal mine accidents exhibit complexity and network characteristics, existing research rarely considers the impact of variations in the costs of investing in node protection on the robustness of complex accident networks. Moreover, current methods for evaluating node importance inadequately integrate a comprehensive analysis of network topological structure. To fill these gaps, this study creates a method to evaluate the importance of nodes in coal mine accident networks using the TOPSIS approach, allowing for a thorough analysis of how important each node is in the network. Furthermore, an optimal protection strategy model with cost constraints is developed using genetic optimization algorithms to investigate node protection in complex networks of coal mine accidents. We analyzed practical coal mine accidents in China to validate the effectiveness of the proposed method. The results demonstrate that the method for evaluating node importance considering network topology can more effectively identify critical nodes and comprehensively reflect their importance within the network. Compared with five alternative strategies, the optimal protection strategy achieves superior performance regardless of variations in protection cost budgets. This research provides valuable insights for cost allocation in accident prevention node investment, aiming to reduce accident occurrence rates.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107556"},"PeriodicalIF":6.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on the impact of safety valve venting pressure on thermal runaway in large-format lithium iron phosphate battery","authors":"Chaoshi Liu ,&nbsp;Yong Liu ,&nbsp;Zhixiang Cheng ,&nbsp;Yuxuan Li ,&nbsp;Pengjie Liu ,&nbsp;Lin Liu ,&nbsp;Yuanyuan Min ,&nbsp;Qiangling Duan ,&nbsp;Wenxin Mei ,&nbsp;Qingsong Wang","doi":"10.1016/j.psep.2025.107563","DOIUrl":"10.1016/j.psep.2025.107563","url":null,"abstract":"<div><div>Thermal runaway (TR) of large-format lithium iron phosphate (LFP) batteries has become a critical technical issue due to its potential to cause extensive fire incidents. The safety valve (SV) plays an important role that it enables gases generated inside the battery to release promptly, thereby delaying the onset of TR (<em>T</em>_TR). However, the impact of the initial setting venting pressure of the safety valve (<em>P</em>_sv) on the TR behavior of lithium-ion batteries (LIBs) and the severity of the associated hazards remain unclear. To address this, this study investigates the TR behavior and associated risks of LFP batteries with different <em>P</em>_sv under thermal abuse conditions. The results indicate that LFP batteries without SV experience combustion during TR, significantly increasing the hazard. With increasing <em>P</em>_sv, the maximum temperature (<em>T</em>_max) and peak rate of temperature rise (d<em>T</em>/d<em>t</em>)_max during TR decrease gradually. Finally, a TR assessment model is employed to evaluate the hazards of LFP batteries under different <em>P</em>_sv. Batteries without SV exhibit the highest TR hazards, whereas those with the <em>P</em>_sv of 0.35 MPa demonstrated the lowest hazards. However, higher <em>P</em>_sv results in the accumulation of higher peak pressures inside the battery, thereby increasing the risk of severe safety incidents. Therefore, the selection of the appropriate <em>P</em>_sv requires careful consideration of the battery's operational specifications and safety standards to achieve an optimal balance. This results can provide a more comprehensive theoretical and experimental basis for battery design and safety assessment by comparing battery responses under different <em>P</em>_sv conditions.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107563"},"PeriodicalIF":6.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective flotation separation of chalcopyrite from talc using Ghatti Gum as a novel depressant","authors":"Zhi Lei,&nbsp;Hao Tang,&nbsp;Heng Zhang,&nbsp;Yong-Chun Luo,&nbsp;Peng-Fei Xu","doi":"10.1016/j.psep.2025.107561","DOIUrl":"10.1016/j.psep.2025.107561","url":null,"abstract":"<div><div>The intergrowth phenomenon of chalcopyrite and talc makes the identification of an eco-friendly and efficient depressant crucial for achieving effective separation. In this study, we innovatively employed Ghatti Gum as a talc depressant to improve the flotation separation. The micro-flotation test results demonstrate that, compared to conventional depressants, Ghatti Gum exhibits a stronger depressing effect on talc while maintaining excellent selectivity toward chalcopyrite. Atomic force microscopy (AFM), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), and transmission electron microscopy (TEM) images confirmed that Ghatti Gum adsorbed selectively on the surface of talc, which significantly altered its surface roughness and elemental composition. In contrast, Ghatti Gum exerts a weaker influence on chalcopyrite. Further analysis through Zeta potential, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) calculations revealed that Ghatti Gum adsorbs onto the talc surface through hydrogen bonds and hydrophobic interactions. Meanwhile, Ghatti Gum has less influence on the elemental composition and floatability of the chalcopyrite surface. In summary, Ghatti Gum emerges as a promising eco-friendly depressant for the flotation separation of chalcopyrite and talc. This discovery not only expands the applications of Ghatti Gum but also provides novel insights for the efficient separation of chalcopyrite from talc.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107561"},"PeriodicalIF":6.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A multilayer analytical model for reactive contaminant transport through cutoff wall-aquifer systems: Addressing pre-installation contamination and source removal scenarios","authors":"Xiang-Hong Ding ,&nbsp;Chun-Hui Peng ,&nbsp;Hong-Xin Chen ,&nbsp;Lian-Heng Zhao ,&nbsp;Yong He","doi":"10.1016/j.psep.2025.107557","DOIUrl":"10.1016/j.psep.2025.107557","url":null,"abstract":"<div><div>Cutoff walls are a type of engineered barrier widely used to control contaminant transport in the subsurface environment, particularly at legacy contaminated sites. However, most existing models assume initially uncontaminated strata and a persistent source of release, which limits their applicability under realistic site conditions. This study aims to develop a multilayer analytical model that incorporates spatially variable initial contaminant concentrations and accommodates both source-release and source-removal scenarios. The model explicitly couples contaminant advection, dispersion, adsorption, and degradation across a three-domain system (inside aquifer-cutoff wall-outside aquifer), allowing for more accurate performance prediction of vertical barriers. A series of scenario comparisons were conducted using the proposed model, examining the effects of initial pollution status, source dynamics, hydraulic gradients, and barrier permeability. Results show that ignoring pre-existing contamination may lead to an overestimation of breakthrough time by more than 200 %, while source removal can reduce outlet concentrations by up to 50 % depending on wall placement. Sensitivity analysis indicates that reducing barrier permeability (from 10⁻⁸ to 10⁻⁹ m/s) or reversing hydraulic gradients can delay contaminant breakthrough time by an order of magnitude. Practical design curves are introduced to optimize barrier thickness, installation timing, and position, demonstrating that early installation, expanded control zones, and high-adsorption/low-permeability backfilling significantly reduce required barrier dimensions. This work advances predictive tools for cutoff wall performance at legacy contaminated sites, providing actionable insights for engineers to balance remediation costs and environmental safety.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107557"},"PeriodicalIF":6.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mineralogical insights into the release behaviors of potentially toxic elements from the indigenous Zn smelting slags dumping sites","authors":"Ze-Lin Xu ,&nbsp;Mei-Chun Zhou ,&nbsp;Jin-Hui Miao ,&nbsp;Wen-Chu Zhao ,&nbsp;Rong-Bing Fu ,&nbsp;Da-Mao Xu","doi":"10.1016/j.psep.2025.107537","DOIUrl":"10.1016/j.psep.2025.107537","url":null,"abstract":"<div><div>Limited studies focus on the leaching behaviors of potentially toxic elements (PTEs) in smelting slags dumping sites, based on mineralogical information and geochemical modelling. In this study, the occurrence patterns of PTEs were identified using mineral liberation analyzer (MLA) and Tessier speciation extraction method, and their release mechanisms were studied via the leaching tests and PHREEQC modelling. The results indicated that 60.33 % of kaolinite, 23.19 % of quartz and 1.36 % of limonite were found in soils, whereas 25.38 % of quartz, 25.86 % of biotite, and 21.54 % of Fe and Al- bearing oxides existed in smelting slags. 0.34–64.54 % of As, Cd, Mn, Pb and Zn were presented in the labile fractions, and coexisted with silicate and oxide minerals. The effects of smelting slag additions on PTEs release from soil-slag mixing systems were more obvious under extremely acidic (pH &lt; 4) and alkaline (pH &gt; 10.5) environment. PTEs release process was best fitted by the double constant rate equation in column leaching tests (R² &gt; 0.92). PHREEQC results further showed that the dissolution and precipitation of PTEs hosting minerals were the potential factors to control PTEs release. Overall, this study was of great significance to pollution control and environmental management in smelting slags dumping sites.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107537"},"PeriodicalIF":6.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing new spectral indices for identifying DOM sources in Liaohe River in a large-scale river basin by fluorescence spectroscopy and random forest model","authors":"Haojing Zhang ,&nbsp;Junwen Hou ,&nbsp;Lei Nie ,&nbsp;Yan Hao ,&nbsp;Hongjie Gao ,&nbsp;Huibin Yu","doi":"10.1016/j.psep.2025.107553","DOIUrl":"10.1016/j.psep.2025.107553","url":null,"abstract":"<div><div>Human activities can have a tremendous impact on rivers. The leaching of riparian soil, discharge of industrial wastewater, agricultural activities, and domestic sewage discharge can all introduce new dissolved organic matter (DOM) into rivers, thereby altering the structure of the original DOM in the river. In recent years, fluorescence traceability technology, especially three-dimensional fluorescence spectroscopy (3D-EEM) combined with parallel factor analysis (PARAFAC), has become an important tool to study the source and change of DOM. However, there are differences in the definition and calculation methods of the traditional fluorescence index, which leads to its limited applicability in different water bodies, so it is unable to accurately distinguish the sources of pollutants. Here, by combining the random forest model with three-dimensional to two-dimensional, taking the Liaohe River Basin as the research object, a new fluorescence traceability model is constructed. Divide it into three sources, i.e., originating from urb sewage, agricultural wastewater and soil organic matter, and thus defined as U-DOM, A-DOM, T-DOM, respectively. Based on the random forest model, special nodes of three-dimensional fluorescence spectrum can be identified, which can be tracked from three sources. It was closely related to the key peaks and nodes of EEM from three different sources, i.e., URB sewage (U-SoI: U-1/U-2 =(Ex: 245, Em: 440)nm/((Ex: 230, Em: 345)nm), agricultural wastewater (A-SoI: A-1/A-2 =( Ex: 245, Em: 325)nm/( Ex: 260, Em: 430)nm) and soil organic matter (T-SoI: T-1/T-2 =( Ex: 260, Em: 430)nm/( Ex: 285, Em: 365)nm). It is found that when U-SoI is greater than 0.9, it can be recognized as a typical U-DOM; When A-SoI is between 0.2 and 0.3, it indicates that it is A-DOM; When T-SoI is less than 0.5, it is displayed as T-DOM. Compared with the traditional fluorescence index traceability method, the new traceability model shows that the operation is more convenient and efficient, can provide more accurate traceability results, and can flexibly distinguish the source of pollutants according to the specific environment and pollution characteristics, so as to better adapt to the traceability requirements in different scenarios.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"201 ","pages":"Article 107553"},"PeriodicalIF":6.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}