Xuhan Ding , Qingyun Fu , Tianting Wang , Qian Xu , Zhenmin Luo , Kai Wang , Huitian Peng , Tao Wang
{"title":"The synthesis, performance, and functional mechanism of an eco-friendly suppressant derived from hydroxyethyl cellulose for the mitigation of coal dust pollution","authors":"Xuhan Ding , Qingyun Fu , Tianting Wang , Qian Xu , Zhenmin Luo , Kai Wang , Huitian Peng , Tao Wang","doi":"10.1016/j.psep.2025.107861","DOIUrl":"10.1016/j.psep.2025.107861","url":null,"abstract":"<div><div>To address fugitive dust pollution during coal transportation and stockpiling, this study develops an efficient and environmentally friendly polymer consolidating agent, HEC-AM-IA, through the synthetic modification of hydroxyethyl cellulose (HEC). Fourier-transform infrared spectroscopy confirms the successful grafting of functional groups, while thermal analysis reveals excellent stability. Scanning electron microscopy-energy dispersive spectroscopy reveals a dense crosslinked structure crucial for dust suppression. The uniaxial compressive strength of coal treated with HEC-AM-IA is 2.8 times that of unmodified HEC, demonstrating enhanced bonding and cohesion. HEC-AM-IA also exhibits superior wettability, with a lower contact angle, enabling faster spreading and deeper infiltration into the coal matrix, as well as strong water retention that delays evaporation and maintains film integrity. Molecular dynamics simulations corroborate the enhanced wetting with larger contact areas and stronger interfacial interactions. Mechanistically, modification increases the electrostatic potential differences and uneven charge distribution, whereas polar groups enhance hydrogen bonding, adsorption on coal, and water molecule activity. Frontier orbital analysis indicates higher molecular reactivity, supporting stable interfacial interactions that improve spreading, coverage, and binding. Wind erosion tests verify that HEC-AM-IA forms coal crusts with superior integrity and stability under high winds, showing significantly less mass loss than water or HEC.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107861"},"PeriodicalIF":7.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048201","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}
Juexiu Li , Wenbo Xue , Huandan Cui , Xinrui Lei , Wenlong Zhou , Rui Zhao , Ziqiang Li , Chuanyi Fan , Zhongxian Song , Jinping Jia
{"title":"Investigation on unrecognized catalytic contributing role of chlorobenzene oxidation by iron ore in sintering process","authors":"Juexiu Li , Wenbo Xue , Huandan Cui , Xinrui Lei , Wenlong Zhou , Rui Zhao , Ziqiang Li , Chuanyi Fan , Zhongxian Song , Jinping Jia","doi":"10.1016/j.psep.2025.107862","DOIUrl":"10.1016/j.psep.2025.107862","url":null,"abstract":"<div><div>The iron ore sinter process produced large amount of volatile organic compounds (VOCs) emission due to its high dependence on fossil fuel. Meanwhile, sintering process features of moderate temperature and oxygen concentration, which will induce the <em>in situ</em> VOCs oxidation at interface of iron ore particles when VOCs generated at the same time due to the natural intrinsic physic-chemical characteristics of iron-bearing material. In this study, we first investigated the unrecognized catalytic contributing role of VOCs oxidation by iron ore in sintering process, of which is dominant pollution unit in long-term steel making industry. Chlorobenzene (CB) was taken as representative sinter flue gas chlorinated VOCs molecule, and its catalytic oxidation performance was investigated by 5 distinct iron ores originated from different iron smelts in China. It was evident that iron ores exhibited different CB oxidation performance, following the order of YD>MK>BG>JS>YJC. Especially, YD and MK reached 89.0 % and 81.0 % CB conversion at 550 °C. According to material characterization result, YD and MK exhibited orthorhombic FeO(OH) phase as dominant structure with higher O<sub>β</sub>/(O<sub>α</sub>+O<sub>β</sub>) ratio than other ores. The catalytic CB oxidation performance under diverse reaction conditions were also evaluated. By combining GC-MS and <em>in situ</em> DFIFTs analysis, CB conversion path and Marse-van Krevelen mechanism were proposed.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107862"},"PeriodicalIF":7.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048205","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":"Dynamic safety assessment of deployment operation of subsea shell using STAMP and DOOBN approach","authors":"Xinhong Li, Mengdi Yang, Ziyue Han","doi":"10.1016/j.psep.2025.107857","DOIUrl":"10.1016/j.psep.2025.107857","url":null,"abstract":"<div><div>Subsea shell deployment is a challenging operation due to the harsh marine environment, complex procedures, and potential for human error. This study presents a dynamic safety assessment of the pendulous installation of subsea shells using STAMP and DOOBN. Considering the complexity and multitude of influencing factors in subsea shell operations, STAMP is applied to identify risk factors across four critical stages, i.e., marine transportation, lifting into water, pendulum motion, and seating installation. The causal logic and interactions among these risk factors are analyzed to develop stage-specific DBN models, which are integrated into a DOOBN model for risk assessment of the entire deployment operation. This model enables the evaluation of reliability at each stage, and dynamic failure probabilities can be calculated. The critical influencing factors can be identified, and the risk mitigation strategies can be developed base on the outcomes of the model. A case study is used to illustrate the model, which is useful for enhancing the safety of subsea shell deployment operations.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107857"},"PeriodicalIF":7.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046114","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}
Weihang Liang , Minghao Yun , Bin Wang , Suyun Chang , Jingmei Sun
{"title":"Impact of pollutant-laden stormwater inflow on urban river blackening and odor: Processes and mechanisms","authors":"Weihang Liang , Minghao Yun , Bin Wang , Suyun Chang , Jingmei Sun","doi":"10.1016/j.psep.2025.107848","DOIUrl":"10.1016/j.psep.2025.107848","url":null,"abstract":"<div><div>The inflow of pollutant-laden stormwater due to cross-connections between stormwater and sewage pipelines contributes to the occurrence of blackening and odor in urban rivers following rainfall events. To elucidate the distinct roles of particulate and dissolved pollutants contained in pollutant-laden stormwater driving water bodies blackening and odor, this study investigated the effects of individual and synergistic inputs of particulate and dissolved pollutants on blackening and odor formation, revealing the mechanisms by which pollutant-laden stormwater inflow drives river blackening and odor. Results demonstrated that particulate pollutants input alone induced only transient visual darkening during particle suspension, without causing persistent blackening and odor. In contrast, dissolved pollutants input could create anaerobic conditions, stimulating sulfide and Fe²⁺ generation, which directly triggered blackening and odor formation. Synergistic input of both fractions exhibited an accelerated effect, promoting faster blackening and odor onset compared to dissolved pollutants alone under equivalent organic loading. Dissolved organic matter influenced Fe²⁺ and chromophoric dissolved organic matter (CDOM) release from particulate pollutants, with peak impact at soluble chemical oxygen demand (SCOD) constituted 60 % of total chemical oxygen demand (TCOD). The blackening and odor process driven by pollutant-laden stormwater primarily comprises two stages: shock and induction. Shock stage: Particulate pollutant suspension directly causes visual blackness. Induction stage: The anaerobic and moderately acidic conditions created by pollutant-laden stormwater promote biological reduction of SO₄²⁻ and Fe³ ⁺ in the overlying water, as well as release of sulfur and iron from porewater. Key blackening agents were iron sulfides adsorbed onto organic flocs and CDOM in the overlying water. Gas ebullition suspended black flocs, CDOM enhanced light absorption, and fulvic-like CDOM promoted particle suspension, collectively inducing blackening. For odor, elevated H₂S concentrations in headspace gases were identified as the dominant source of post-rainfall odor. Finally, it is recommended to set the primary treatment objective for pollutant-laden stormwater as limiting the SCOD concentration of the incoming river pollutant loading to ≤ 100 mg/L, while maintaining an SCOD/TCOD ratio > 0.8.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107848"},"PeriodicalIF":7.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046116","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}
Jinxiang Deng , Mengjie Li , Lingling Wu , Zhijun Zhang , Huaimiao Zheng , Lin Hu , Yakun Tian , Min Wang
{"title":"Study on the remediation of uranium contaminated water by indigenous bacteria in tailing pond and the mechanism of mineralization and precipitation","authors":"Jinxiang Deng , Mengjie Li , Lingling Wu , Zhijun Zhang , Huaimiao Zheng , Lin Hu , Yakun Tian , Min Wang","doi":"10.1016/j.psep.2025.107851","DOIUrl":"10.1016/j.psep.2025.107851","url":null,"abstract":"<div><div>To address the remediation demand of uranium-contaminated water in the uranium tailings pond area, the removal mechanism of biomineralisation uranium fixation based on microbial-induced carbonate precipitation (MICP) technology was systematically explored. The mechanism of enhancing uranium removal efficiency and the synergistic uranium fixation pathway of HK-1 was elucidated using the selected indigenous Sporosarcina sp<em>.</em> strain (HK-1). The results showed that the biological removal rate and mineralization rate of uranium after domestication increased to 44.03 % and 58.68 %, respectively. After optimising the culture parameters using response surface methodology, the high-efficiency uranium removal effect of uranium-fixation coprecipitation products could be achieved, and the solidification stability could be enhanced through lattice substitution and encapsulation. The mineralisation kinetics analysis under uranium stress revealed that the uranium fixation efficiency of domesticated strains was further enhanced to 86.14 %, and the secondary release rate of uranium in coprecipitation products was significantly reduced. Microscopic characterization revealed the mechanism of action: 1) biosorption of functional groups of bacteria; 2) Interfacial coordination and complexation of carbonate minerals; 3) UO₂<sup>2+</sup> is transformed by lattice-supported coprecipitation. Through the directional formation of uranium-calcium carbonate composite minerals, MICP technology significantly inhibits the dissolution and migration of uranium, thereby enhancing its stability.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107851"},"PeriodicalIF":7.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097733","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}
Ting Wang , Wei Lu , Jinliang Li , Jinhu Li , Ao Gao , Jianjun Lin
{"title":"Preparation of porous thermoresponsive coating (PU@AC-Al) and its synergistic mechanism of early fire warning and flame retardancy","authors":"Ting Wang , Wei Lu , Jinliang Li , Jinhu Li , Ao Gao , Jianjun Lin","doi":"10.1016/j.psep.2025.107858","DOIUrl":"10.1016/j.psep.2025.107858","url":null,"abstract":"<div><div>Early fire warning is vital to prevent fire escalation, yet conventional smoke-based alarms suffer from high activation temperatures and delayed responses. To overcome these issues, a thermoresponsive polyurethane (PU)-based smart coating with early warning capability was developed by incorporating ammonium carbamate (AC) and nano-aluminum oxide (n-Al₂O₃) via a two-step synthesis. The resulting thermoresponsive coating (PU@AC-Al) exhibits dual-mode functionality, providing both active gas-releasing fire warning and passive flame-retardant protection. Experimental results demonstrate that n-Al<sub>2</sub>O<sub>3</sub> in the coating induces the formation of a porous structure in the polyurethane matrix via an interfacial pore-forming effect, which enhances the decomposition of the thermosensitive component and promotes gas release. The AC component exhibits dual functionality during thermal disturbance through a solid–gas phase transition reaction: it absorbs phase change enthalpy to delay temperature rise in the coating and simultaneously releases characteristic NH₃ gas as an early warning signal. When the n-Al<sub>2</sub>O<sub>3</sub> content reaches 5 wt%, the coating's thermal response sensitivity is triggered at 72 ℃, and the ignition alarm time under open flame conditions is reduced to 12 s. The initial gas release temperature precedes the typical smoke generation temperatures of common construction materials by 66.5–200 ℃, demonstrating excellent early warning performance.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107858"},"PeriodicalIF":7.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097804","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}
Xinmeng Jiang , Hongfang Lu , Zhiheng Xia , Zhi-Wei Shan , Yaqin Xiang , Y. Frank Cheng
{"title":"Above-ground natural gas riser leak dispersion and leakage rate prediction based on CFD and BPNN approaches","authors":"Xinmeng Jiang , Hongfang Lu , Zhiheng Xia , Zhi-Wei Shan , Yaqin Xiang , Y. Frank Cheng","doi":"10.1016/j.psep.2025.107854","DOIUrl":"10.1016/j.psep.2025.107854","url":null,"abstract":"<div><div>Natural gas risers, typically installed along exterior building walls, are susceptible to corrosion, construction activities, and mechanical impacts, thereby posing significant safety risks. Therefore, it is crucial to examine gas leakage and dispersion behaviors following pipeline failure and to develop predictive models for leakage rates. This study investigates above-ground natural gas risers in urban environments by employing a transient species transport model to simulate gas leakage and dispersion. The effects of pipeline operating pressure and leakage diameter on gas distribution, as well as the overall leakage and diffusion characteristics, are systematically analyzed. Moreover, a predictive model for leakage rate is developed based on the distance between monitoring points and the leakage source, incorporating measured gas concentration data. The results indicate that in the initial stage of a natural gas leak, a substantial amount of gas accumulates near the leakage hole, forming a momentum-driven jet that spreads rapidly horizontally with limited lateral dispersion capacity. As the leakage persists, the dominance of jet-driven dispersion gradually transitions to turbulent diffusion with buoyancy. At around 20 s, the dispersion process attains a quasi-steady state. Gas dispersion is influenced by turbulent diffusion, entrainment, and buoyancy, which together determine the overall spreading behavior. The sampling plane, aligned with the air intake of the Methane Detection Vehicle and situated within 20 m of the leakage source, shows a peak methane concentration approximately 3 m from the leakage hole. Although variations in pipeline operating pressure and leakage diameter influence the overall concentration distribution, they do not alter the position of the concentration peak. The proposed backpropagation neural network (BPNN) model demonstrates robust predictive performance for leakage rates in long-distance monitoring scenarios, thereby supporting the practical application of mobile methane detection vehicle technologies.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107854"},"PeriodicalIF":7.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048204","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}
Jun Cong Ge , Hongliang Luo , Ik-Tae Im , Nag Jung Choi
{"title":"Corrosion risk and material degradation of copper-zinc alloys in aged biodiesel fuel systems","authors":"Jun Cong Ge , Hongliang Luo , Ik-Tae Im , Nag Jung Choi","doi":"10.1016/j.psep.2025.107860","DOIUrl":"10.1016/j.psep.2025.107860","url":null,"abstract":"<div><div>This study investigates the corrosion behavior of copper-zinc alloys in aged canola biodiesel, with an emphasis on fuel system reliability and long-term material performance in renewable energy applications. A combination of analytical techniques, including scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and gas chromatography–mass spectrometry (GC-MS), was employed to elucidate corrosion mechanisms and material–fuel interactions. Compared with conventional diesel, biodiesel and its blends significantly accelerated both localized and generalized corrosion, characterized by severe pitting, surface degradation, and the formation of oxide layers (primarily Cu<sub>2</sub>O and CuO). These phenomena threaten the structural integrity and operational safety of fuel handling systems. Although the antioxidant additive tertiary butylhydroquinone (TBHQ) partially inhibited oxide formation, it did not provide complete protection against degradation. Furthermore, selective corrosion between copper and zinc was observed, suggesting galvanic effects and underscoring the limited long-term efficacy of antioxidant-based mitigation strategies. By contrast, copper-zinc alloys exhibited good compatibility with diesel fuel, showing negligible surface damage after extended exposure. Overall, these findings underscore the urgent need for optimized alloy compositions and more robust additive systems to enhance corrosion resistance and ensure the safe use of biodiesel in industrial fuel systems.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107860"},"PeriodicalIF":7.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048200","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}
Karen Quintana , Martí Biset-Peiró , Andrés A. García Blanco , Jordi Guilera
{"title":"Avoiding runaway scenarios in Fischer-Tropsch synthesis during startup: temperature and pressure influence","authors":"Karen Quintana , Martí Biset-Peiró , Andrés A. García Blanco , Jordi Guilera","doi":"10.1016/j.psep.2025.107849","DOIUrl":"10.1016/j.psep.2025.107849","url":null,"abstract":"<div><div>The operation of Fischer-Tropsch synthesis (FTS) pilot plants is essential to advancing Power-to-X strategies. However, conducting experimental campaigns with multiple startups introduces significant challenges due to the system's pronounced sensitivity to thermal instability and remains an unaddressed challenge in the literature. This experimental study analyzes the thermal response of a pilot-scale FTS reactor under controlled heating and pressurization, aiming to identify safe operating limits to prevent thermal runaway. In this experimental work, runaway was observed when the heating rate response (HRR) exceeded 15 ºC/h, while stable operation was achieved by limiting oil heating to <1 ºC/h. Pressurization from 10 to 20 bar at 3 bar/h induced a significantly lower thermal rate of 0.48 ºC/bar, offering an alternative to thermal ramping below 210 ºC. These findings highlight the importance of combining temperature and pressure ramping strategies to maintain thermal control during startup and underscore the need to evaluate the heating rate response continuously and maintain it below the critical threshold to ensure safe and stable operation.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107849"},"PeriodicalIF":7.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048206","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}
Hong Gou , Zhijun Wan , Zijun Feng , Weitao Yin , Peng Shi , Zheng Zhen , Chengli Wen
{"title":"Dynamic modeling of air temperature field and optimal cooling strategy design for advancing deep coal mining faces","authors":"Hong Gou , Zhijun Wan , Zijun Feng , Weitao Yin , Peng Shi , Zheng Zhen , Chengli Wen","doi":"10.1016/j.psep.2025.107855","DOIUrl":"10.1016/j.psep.2025.107855","url":null,"abstract":"<div><div>To address the unclear spatiotemporal evolution mechanisms of airflow temperature fields and inefficient cooling design in heat hazard control for high-temperature coal mining faces, this study establishes a dynamic numerical model using a moving mesh method, validated with field data (relative error <2 %). Results reveal significant spatiotemporal heterogeneity: spatially, air temperature exhibits a \"slow-sharp-slow\" rise along airflow paths, with the working face section showing a steep gradient of 1.18 ℃/100 m; temporally, temperature decays exponentially initially, transitioning to a linear decline (0.19 ℃/100 m). Quantitative relationships between air temperature <em>T</em><sub>b</sub>, cooling load <em>Q</em><sub>c</sub>, and key parameters (cooling air temperature <em>T</em><sub>in</sub>, cooling air velocity <em>v</em><sub>in</sub>, and original rock temperature <em>T</em><sub>0</sub>) were established, demonstrating: (1) linear positive correlations between <em>T</em><sub>b</sub> and <em>T</em><sub>in</sub> or <em>T</em><sub>0</sub>, with an exponential negative correlation to <em>v</em><sub>in</sub>. (2) A critical regime transition was identified: cooling load negatively correlates with cooling air velocity below a critical cooling air temperature (linearly dependent on original rock temperature), reversing above this threshold. Field cooling implementation based on this quantitative model achieved an average temperature reduction of 9.5°C in mining faces, lowering thermal risks to 'heat-safe' level. Monthly production increased by 93000 tons per face, demonstrating significant occupational health and economic benefits.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 107855"},"PeriodicalIF":7.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061369","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}