Process Safety and Environmental Protection最新文献

{"title":"Low-temperature catalytic oxidation of toluene using CeO2@MIL-101(Fe): Stability against water and SO2","authors":"David Murindababisha ,&nbsp;Abubakar Yusuf ,&nbsp;Kien-Woh Kow ,&nbsp;Yong Sun ,&nbsp;Run Pan ,&nbsp;Yong Ren ,&nbsp;George Zheng Chen ,&nbsp;Jianrong Li ,&nbsp;Chengjun Wang ,&nbsp;Jun He","doi":"10.1016/j.psep.2025.107005","DOIUrl":"10.1016/j.psep.2025.107005","url":null,"abstract":"<div><div>Toluene, a volatile organic compound (VOC), poses significant environmental and health risks, necessitating efficient abatement technologies. This study explores the catalytic oxidation of toluene using CeO₂-supported MIL-101(Fe) metal-organic frameworks (MOFs). A series of CeO₂@MIL-101(Fe) catalysts with varying Ce loadings were synthesized and characterized through XRD, BET, XPS, SEM-EDS, HRTEM, H₂-TPR, and in situ DRIFTS analyses. Among the synthesized materials, 6 % CeO₂@MIL-101(Fe) exhibited superior catalytic performance, achieving 90 % toluene conversion (T₉₀) at 239 °C, alongside remarkable stability over 60 hours. The catalyst demonstrated high tolerance to water vapor and sulfur dioxide (SO₂), with full activity recovery after inhibitor removal. In situ DRIFTS and PTR-MS provided insights into the reaction mechanism, indicating that lattice oxygen plays a crucial role in toluene activation. The synergistic interaction between CeO₂ and MIL-101(Fe) enhances redox properties and oxygen mobility, improving catalytic efficiency. These findings offer valuable insights into designing robust, MOF-based catalysts for VOC removal, providing a promising approach to mitigating air pollution.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107005"},"PeriodicalIF":6.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient electrocatalytic degradation of tigecycline by copper foam-supported Pd-ZnS dual nanoparticle structures: A study of H* reduction and mechanism of action","authors":"Ruoyi Li,&nbsp;Muchen Lu,&nbsp;Jiaqi Yu,&nbsp;Jian Zhang,&nbsp;Jia Li,&nbsp;Xinyan Wang","doi":"10.1016/j.psep.2025.107019","DOIUrl":"10.1016/j.psep.2025.107019","url":null,"abstract":"<div><div>Tigecycline (TGC), a third-generation, broad-spectrum, potent antimicrobial drug based on a tetracycline structure, may pose potential hazards to ecosystems and human health due to its difficulty in natural degradation in the environment. However, the environmental degradation behavior of TGC has not been fully investigated, so it is still a major challenge to rationally design efficient, stable, environmentally friendly and cost-effective electrocatalysts for TGC degradation. In this study, Pd-ZnS NPs/CF composite electrode anchored on copper foam (CF) was synthesized by simple ultrasonic method and two-step electrodeposition. The degradation efficiency of TGC at the Pd-ZnS NPs/CF composite electrode was as high as 88.75 % within 30 min under neutral conditions, and the energy consumption was only 0.11 kWh/m³ . In addition, the overall Pd²⁺ contribution was as low as 0.00005 M after the introduction of inexpensive ZnS. The Pd-ZnS NPs/CF composite electrode exhibited excellent electrocatalytic activity and degradation of antibiotics under different aqueous environmental conditions. Suitable for degradation of a wide range of antibiotics with excellent cyclic stability. The TGC degradation rate was stabilized above 85.40 % after 240 min of continuous operation in a continuous flow reactor, and the composite electrode prepared once can be used for a long time. It highlights the broad application prospects of the composite electrode in the field of water treatment technology and the significant advantages of high efficiency, low energy consumption and stable long-term operation. In this study, the mechanism of action of ·OH and H* with TGC is also deeply investigated, and the dynamics of TGC degradation intermediates are probed using two-dimensional correlation spectroscopy (2DCOS) and density-functional theory (DFT) calculations. Finally, the ecotoxicity of Pd-ZnS NPs/CF composite electrodes is investigated, which provides a simple and feasible idea for the preparation of efficiently degraded antibiotic cathodes.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107019"},"PeriodicalIF":6.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629361","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":"Hydrogen jet fire accident prediction model for hydrogen refueling station based on hybrid neural network","authors":"Xu He ,&nbsp;Guodong Yang ,&nbsp;Depeng Kong","doi":"10.1016/j.psep.2025.107027","DOIUrl":"10.1016/j.psep.2025.107027","url":null,"abstract":"<div><div>The burgeoning hydrogen energy sector, particularly in China, is a key part of the ongoing energy transition. However, the rapid expansion of hydrogen refueling stations (HRSs) introduces significant safety concerns due to potential high-pressure hydrogen leaks leading to fires or explosions. Accurate consequence prediction is crucial for effective risk mitigation. While numerical simulations offer precision, they are computationally intensive, hindering timely responses. Theoretical models provide faster results, but their applicability diminishes in complex scenarios, such as when jet fires interact with obstacles. To address these limitations, this study introduces a hybrid model-based and data-driven approach that combines the strengths of Generative Adversarial Network (GAN) and Long Short-Term Memory (LSTM) and incorporates a model-based flame parameters prediction method. This model aims to rapidly and accurately predict the flame shape and temperature distribution of hydrogen jet fires, even when obstacles are present. The numerical simulation data used for model training have been validated through literature experiment, ensuring the accuracy of the predictions. Similarly, the accuracy of the model's predicted flame width data was assessed using experimental data, with an average relative error of 7.96 %. The results demonstrate that the model surpasses traditional numerical methods in terms of efficiency and is capable of handling complex scenarios, providing rapid and relatively accurate predictions. It serves as a valuable tool for process safety and risk management, offering substantial support for safety management and emergency decision-making at hydrogen refueling stations.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107027"},"PeriodicalIF":6.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620096","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 safety of dry ice freeze plugging by throttling effect during pressure relief of industrial CO2 pipeline","authors":"Fanfan Qiao ,&nbsp;Zhenxi Liu ,&nbsp;Lei Chen ,&nbsp;Shuai Yu ,&nbsp;Yanwei Hu ,&nbsp;Xingqing Yan ,&nbsp;Jianliang Yu","doi":"10.1016/j.psep.2025.107001","DOIUrl":"10.1016/j.psep.2025.107001","url":null,"abstract":"<div><div>In the pipeline transportation of Carbon Capture Utilization and Storage (CCUS) technology, the manual pressure relief method is a key mean in pipeline maintenance work. However, dry ice will be generated in the pipeline during the large-scale pressure relief process, so it is necessary to assess the risk of dry ice freezing and plugging, and then to develop a reasonable and safe pressure relief scheme. In this study, three types of manual pressure relief experiments with different schemes were carried out based on an industrial-grade pipeline experimental platform. The influence of throttling effect was considered in the experimental study, and the generation and change of dry ice in the pipeline during the pressure relief process were investigated. On this basis, additional throttling levels were added, and then discussed the region of dry ice distribution in the pipeline under multi-stage throttling and the resulting evolution of the pipeline's low temperature characteristics. The results show that throttling prevents dry ice particles from flowing out of the pipeline and increases the dry ice accumulation at the outlet end of the pipeline, leading to a more severe temperature drop. When the throttling level was increased, the dry ice buildup was further severe, causing a high probability of freezing and plugging of the valve position. The specification of the experimental pipeline is the actual industrial grade, so the results of the study have a realistic guiding value for the development of safety relief programs for industrial CO₂ transportation pipelines, and also provide a reliable theoretical basis for the assessment of the dry ice risk.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107001"},"PeriodicalIF":6.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642516","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":"Multiparametric resilience assessment of chemical process systems incorporating process dynamics and independent protection layers","authors":"Hao Sun ,&nbsp;Meng Qi ,&nbsp;Ming Yang ,&nbsp;Fuyu Wang ,&nbsp;Heping Wang","doi":"10.1016/j.psep.2025.107018","DOIUrl":"10.1016/j.psep.2025.107018","url":null,"abstract":"<div><div>Chemical Process Systems (CPSs) exhibit complex characteristics and inherent dangers that can lead to serious accidents when disrupted. Accurate quantification and assessment of system resilience are crucial for effectively responding to potential undesired events. To address this, we propose a multiparametric resilience assessment methodology for CPSs that considers system dynamics and Independent Protection Layers (IPLs). This method integrates multiple CPS parameters using the Best Worst Method (BWM) to establish a comprehensive performance indicator. A dynamic simulation model incorporating IPLs is developed to monitor real-time changes in system parameters under disruptive influences. Additionally, a resilience metric is introduced, utilizing time-varying parameters to quantify system resilience under various disruptions. A case study involving a two-column pressure-swing distillation process with top recycling, designed to separate a minimum-boiling azeotrope of tetrahydrofuran and water, demonstrates the applicability of this method to complex CPSs. The results indicate that, compared to traditional resilience assessment methods based on reliability, the proposed approach provides time-dependent process parameters, reducing the uncertainty of reliability data. Furthermore, by considering IPLs, this method offers valuable decision support for the design and optimization of these protective layers.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107018"},"PeriodicalIF":6.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628899","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":"Study on phase transformation and dealkalization of red mud in NaOH-Ca(OH)2 system and CO2 adsorption performance of dealkalization residue","authors":"Wenbao Liu ,&nbsp;Rui Ding ,&nbsp;Weichao Li ,&nbsp;Changye Mang ,&nbsp;Sikai Zhao ,&nbsp;Wengang Liu ,&nbsp;Yanbai Shen ,&nbsp;Qin Zhang","doi":"10.1016/j.psep.2025.107012","DOIUrl":"10.1016/j.psep.2025.107012","url":null,"abstract":"<div><div>Red mud is a kind of solid waste produced in extracting alumina from bauxite, and its high alkalinity poses a severe threat to the environment and land resources. This work investigates the removal of alkali metals from red mud through a hydrothermal reaction under NaOH and Ca(OH)₂ conditions. Hydrothermal slag can be further utilized for CO₂ adsorption, thereby enhancing its value and utilization. The optimal conditions for alkali metal removal were determined through systematic experiments and theoretical analysis: a reaction temperature of 150°C, a Ca/Si molar ratio of 1.0, a reaction time of 2 hours, and a NaOH concentration of 15 %. Under these conditions, the alkali metal removal efficiency reached 97.32 %. In the hydrothermal process, the aluminum-silicon component dissolved and recrystallized to form new mineral phases, such as calcium aluminum garnet and calcium aluminum silica. These phase transitions contribute to the removal of alkali metals. Besides, the CO₂ adsorption experiment showed that the CO₂ adsorption capacity of the sample at 0.15 bar and 1 bar was 1.02 mmol/g and 2.97 mmol/g, respectively. This work proposes an effective method for removing alkali metals from red mud and obtains silicon-based materials with good CO₂ adsorption performance. This study not only increases the resource utilization value of red mud but also provides new material choices for carbon dioxide capture, which has significant environmental and economic significance.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107012"},"PeriodicalIF":6.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143675648","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":"The calcined Mg-Al hydrotalcite for copper adsorption and passivation of copper-contaminated soil","authors":"Chun-Yan Cao,&nbsp;Ming-Hui Nie,&nbsp;Si-Lin Chen,&nbsp;Wen-Ling Long,&nbsp;Min Wang,&nbsp;Shuang Zhao,&nbsp;Xin Wan,&nbsp;Zhi-Guo Song","doi":"10.1016/j.psep.2025.107015","DOIUrl":"10.1016/j.psep.2025.107015","url":null,"abstract":"<div><div>Excessive copper content in soil and water will cause critical pollution to the ecosystem. In this study, an innovative material for passivating copper in soil and removing copper in aqueous environments was prepared by calcining Mg-Al hydrotalcite at various temperatures. The results showed that the calcined Mg-Al hydrotalcite presented high adsorption ability for Cu(II), while the optimal Mg-Al hydrotalcite calcined at 600 °C (HT600) exhibited a maximum Cu(II) adsorption capacity of 188.53 mg·g⁻¹ at 45 °C. The adsorption process was spontaneous and endothermic, conforming to pseudo-second-order kinetics and the Langmuir isotherm model. The adsorption mechanisms primarily involve electrostatic attraction, surface adsorption, precipitation, complexation, and other interactions. Notably, the Mg-Al hydrotalcite exhibited excellent regeneration performance, with HT600 retaining approximately 87.51 % of its initial adsorption capacity after five regeneration cycles. The content of TCLP-Cu (toxicity characteristic leaching procedure-Cu) in contaminated soil amended with calcined Mg-Al hydrotalcite was significantly decreased. After adding calcined Mg-Al hydrotalcite into soil, the occurrence form of copper changed significantly under the action of electrostatic attraction, adsorption, precipitation, complexation, and so on, i.e., the proportion of acid soluble-Cu and reducible-Cu declined, and the proportion of oxidizable-Cu and residual-Cu rose, and the degree of change was dependent on the calcination temperature. HT600 showed excellent passivating effects on Cu in soil. The findings of this study may provide a new perspective on the remediation of copper-contaminated soils and water bodies by using calcined hydrotalcite with simple preparation, environmental friendliness, and low cost.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107015"},"PeriodicalIF":6.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611389","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 extraction of valuable metals from solid waste by deep eutectic solvents - A review","authors":"Chenye Yang ,&nbsp;Jianying Zhao ,&nbsp;Panpan Mu ,&nbsp;Guosai Jiang ,&nbsp;Zhe Tan ,&nbsp;Xiaoguang Zhang ,&nbsp;Dean Pan","doi":"10.1016/j.psep.2025.107008","DOIUrl":"10.1016/j.psep.2025.107008","url":null,"abstract":"<div><div>Traditional metal recycling methods urgently need improvement due to high energy consumption and environmental pollution issues. Against this backdrop, developing a reusable, novel green solvent from eco-friendly raw materials through simple preparation methods has become crucial. Deep eutectic solvents (DES) are considered an ideal alternative to traditional organic solvents due to their tunable polarity, low toxicity, environmental friendliness, and ease of synthesis. DES can effectively extract metals from complex waste systems through selective dissolution and formation of metal complexes, especially in recovering valuable metals such as lithium, nickel, and cobalt from waste lithium batteries and other waste materials. Its structural design allows DES to efficiently and accurately recover target metals, showcasing broad application potential in solid waste recycling.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107008"},"PeriodicalIF":6.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632190","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":"Combustion characteristic evolution and degradation mechanism of finished fire-resistant cables exposed to different ageing conditions","authors":"Hui Liu,&nbsp;Wenqiang Wang,&nbsp;Long Yan ,&nbsp;Zhisheng Xu","doi":"10.1016/j.psep.2025.107011","DOIUrl":"10.1016/j.psep.2025.107011","url":null,"abstract":"<div><div>The safe operation of power system relies heavily on the fire-resistant and mechanical properties of cables, whose degradation behaviors under different ageing conditions remain a serious concern. The combustion characteristics evolution of finished cables under thermal, hygrothermal, and salt spray ageing conditions was explored, and potential degradation mechanisms were clarified by different analytical methods. The results indicate that the adverse influence of hygrothermal environmental condition on finished cable is the largest, including a decrease by 29.6 % in elongation at break, an increase by 52.4 % in total heat release, an increase by 145.8 % in maximum specific optical density, and a reduction by 16.0 % in limiting oxygen index value. The degradation mechanism of the finished cable shows that the main causes of performance degradation are the migration and decomposition of substrate, antioxidants, flame retardants, and plasticizers in the finished cable sheaths. This work highlights the key role of environmental factors in performance degradation of cables, and provides important implications for the design of high-weatherability cables and the evaluation of service cables.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107011"},"PeriodicalIF":6.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143675651","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":"Impact of microplastic contamination derived from human activities on anuran species","authors":"Masoumeh Najibzadeh ,&nbsp;Ali Kazemi ,&nbsp;Milad Esmaeilbeigi ,&nbsp;Habib Ul Hassan","doi":"10.1016/j.psep.2025.107002","DOIUrl":"10.1016/j.psep.2025.107002","url":null,"abstract":"<div><div>Microplastic (MP) pollution poses a significant threat to freshwater ecosystems, yet its impact on amphibians remains poorly understood. This study provides the first assessment of MP contamination in two amphibian species, <em>Pelophylax</em> sp. and <em>Bufotes perrini</em>, from the Hyrcanian forests of northeastern Iran. A total of 136 individuals were examined, revealing that 72 % of samples contained MPs. The dominant MP type was fibers (54 %), with colorless/white particles (58 %) and sizes &lt; 0.5 mm (38 %) being the most prevalent. FTIR spectroscopy identified polyurethanes (43 %) and polystyrene (27 %) as the primary polymers. A significant, albeit weak, positive correlation was found between MP abundance and the residual index (R = 0.1977, p &lt; 0.021), indicating that larger-bodied individuals ingested more MPs. Higher MP loads were observed in individuals from upstream sites, particularly near urban and touristic areas, suggesting human activities as major pollution sources. These findings highlight the urgent need for conservation strategies to mitigate MP contamination in amphibian habitats.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"197 ","pages":"Article 107002"},"PeriodicalIF":6.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631897","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}