Process Safety and Environmental Protection最新文献_第5页

Investigating dust explosibility using exploratory data analysis 利用探索性数据分析调查粉尘爆炸

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-28 DOI: 10.1016/j.psep.2025.108241

Mohammad Alauddin, Anton Schrader, Michael J. Pegg, Paul Amyotte

引用次数: 0

Bromide-containing surfactants enabling singlet oxygen-dominated non-radical oxidation process for efficient degradation of aromatic pollutants in soil and groundwater 含溴表面活性剂使单重态氧主导非自由基氧化过程有效降解土壤和地下水中的芳香族污染物

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-27 DOI: 10.1016/j.psep.2025.108230

Yueming Han , Zhuolun Li , Guanqing Chen, Hengxin Liu, Shichao Feng, Yuntao Guan, Lixun Zhang

Bromide (Br⁻)-containing surfactants-mediated peroxymonosulfate (PMS) oxidation shows great potential in removing aromatic pollutants in soil and groundwater because of its dual roles in activating PMS to produce reactive oxygen species (ROS) and facilitating aromatic pollutants solubilization. However, its application is limited by the formation of toxic byproducts and poor mineralization. This study introduced a simple and efficient strategy of utilizing Na₂CO₃ to augment Br⁻-containing surfactants activated PMS for the selective degradation of aromatic pollutants. > 95 % of chlorobenzene, a representative aromatic pollutant in soil and groundwater, was rapidly removed in the Br⁻/PMS/Na₂CO₃ system at an optimal PMS/Na₂CO₃ ratio of 1_:1, which regulated the system pH to 6.74. The system showed strong resistance to inorganic ions (Cl⁻ and SO₄²⁻) and natural organic matter (humic acid) during the oxidation process. It is attributable to the transformation of dominant ROS from free bromine to singlet oxygen (¹O₂) after adding Na₂CO₃ to the system, which contributed 83.74 % to the degradation of chlorobenzene. The formation mechanisms of ¹O₂ were proposed by coupling quenching experiments, EPR spectroscopy, kinetic modeling of probe micropollutant abatement, and density functional theory calculations. The degradation pathways analysis demonstrated that brominated byproducts were remarkably reduced, and 64.26 % of chlorobenzene was completely degraded to CO₂ and H₂O within 30 min. The ECOSAR prediction confirmed a significant elimination of ecotoxicity through inhibiting the formation of toxic intermediates. This work provides important implications for the achievement of ¹O₂-dominated oxidation pathways in Br⁻/PMS system, and establishes an effective approach for a safe remediation of aromatic pollutants in soil and groundwater.

溴化物（含溴）表面活性剂介导的过氧单硫酸盐（PMS）氧化在去除土壤和地下水中的芳香族污染物方面显示出巨大的潜力，因为它具有激活PMS产生活性氧（ROS）和促进芳香族污染物溶解的双重作用。然而，它的应用受到有毒副产物的形成和矿化差的限制。本研究介绍了一种简单有效的策略，利用Na2CO3增强含有Br -⁻的表面活性剂激活的PMS选择性降解芳香族污染物。>； 95 %的土壤和地下水中具有代表性的芳香性污染物氯苯在Br - /PMS/Na2CO3体系中被迅速去除，PMS/Na2CO3的最佳比例为1:1，将体系pH调节到6.74。该系统在氧化过程中对无机离子（Cl -和SO42 -毒血症）和天然有机物（腐殖酸）有很强的抵抗能力。这是由于Na2CO3加入体系后，优势ROS由游离溴转化为单线态氧（1O2），对氯苯的降解贡献率为83.74 %。通过耦合淬火实验、EPR光谱、探针微污染物减排动力学模型和密度泛函理论计算，提出了1O2的形成机理。降解途径分析表明，溴化副产物显著减少，64.26 %的氯苯在30 min内被完全降解为CO2和H2O。ECOSAR的预测证实，通过抑制有毒中间体的形成，显著消除了生态毒性。这项工作为实现Br -⁻/PMS系统中以o2为主的氧化途径提供了重要的意义，并为土壤和地下水中芳香族污染物的安全修复建立了有效的方法。

{"title":"Bromide-containing surfactants enabling singlet oxygen-dominated non-radical oxidation process for efficient degradation of aromatic pollutants in soil and groundwater","authors":"Yueming Han , Zhuolun Li , Guanqing Chen, Hengxin Liu, Shichao Feng, Yuntao Guan, Lixun Zhang","doi":"10.1016/j.psep.2025.108230","DOIUrl":"10.1016/j.psep.2025.108230","url":null,"abstract":"<div><div>Bromide (Br⁻)-containing surfactants-mediated peroxymonosulfate (PMS) oxidation shows great potential in removing aromatic pollutants in soil and groundwater because of its dual roles in activating PMS to produce reactive oxygen species (ROS) and facilitating aromatic pollutants solubilization. However, its application is limited by the formation of toxic byproducts and poor mineralization. This study introduced a simple and efficient strategy of utilizing Na<sub>2</sub>CO<sub>3</sub> to augment Br⁻-containing surfactants activated PMS for the selective degradation of aromatic pollutants. > 95 % of chlorobenzene, a representative aromatic pollutant in soil and groundwater, was rapidly removed in the Br⁻/PMS/Na<sub>2</sub>CO<sub>3</sub> system at an optimal PMS/Na<sub>2</sub>CO<sub>3</sub> ratio of 1<sub>:</sub>1, which regulated the system pH to 6.74. The system showed strong resistance to inorganic ions (Cl⁻ and SO<sub>4</sub><sup>2</sup>⁻) and natural organic matter (humic acid) during the oxidation process. It is attributable to the transformation of dominant ROS from free bromine to singlet oxygen (<sup>1</sup>O<sub>2</sub>) after adding Na<sub>2</sub>CO<sub>3</sub> to the system, which contributed 83.74 % to the degradation of chlorobenzene. The formation mechanisms of <sup>1</sup>O<sub>2</sub> were proposed by coupling quenching experiments, EPR spectroscopy, kinetic modeling of probe micropollutant abatement, and density functional theory calculations. The degradation pathways analysis demonstrated that brominated byproducts were remarkably reduced, and 64.26 % of chlorobenzene was completely degraded to CO<sub>2</sub> and H<sub>2</sub>O within 30 min. The ECOSAR prediction confirmed a significant elimination of ecotoxicity through inhibiting the formation of toxic intermediates. This work provides important implications for the achievement of <sup>1</sup>O<sub>2</sub>-dominated oxidation pathways in Br⁻/PMS system, and establishes an effective approach for a safe remediation of aromatic pollutants in soil and groundwater.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108230"},"PeriodicalIF":7.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145611891","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}

引用次数: 0

Dynamic modeling, predictive control, and optimization of a multi-scenario CCHP-PV-hydrogen energy system with integrated carbon capture using machine learning algorithms 使用机器学习算法集成碳捕获的多场景cchp - pv -氢能系统的动态建模，预测控制和优化

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-27 DOI: 10.1016/j.psep.2025.108235

Adib Mahmoodi Nasrabadi , Javad Rezazadeh Mehrenjani

This study investigates the integration of combined cooling, heating, and power (CCHP) solar-assisted systems alongside hydrogen production and carbon capture to improve energy efficiency and sustainability. Three scenarios were dynamically simulated: conventional CCHP (scenario A), solar-assisted CCHP (scenario B), and solar-assisted CCHP with hydrogen integration (scenario C). A predictive machine learning model, trained on power plant data from South Florida, USA, forecasted electricity generation for grid balancing. Results demonstrated that integrating solar and hydrogen significantly enhanced system performance. The preferred scenario (scenario C) showed improved exergy efficiency, reduced fuel consumption, and lower emissions compared to scenarios A and B. A comparative analysis between Scenarios A and C was conducted to ascertain the specific contributions of PV integration. At peak solar radiation (12:00 PM), scenario C achieved a 44 % fuel reduction, decreased levelized cost of electricity (LCOE) from 4.72 to 3.45 cents/kWh, and lowered toxic gas emissions from 52.22 to 31.84 kg/GJ compared to scenario A. Hydrogen production enables dynamic fuel blending in the system, ensuring operational stability by adjusting the hydrogen-methane ratio based on PV generation availability during the day and night. Optimization using a GA algorithm for scenario C yielded a 58.87 % exergy efficiency, a 2.97 cents/kWh LCOE, and 21.71 kg/GJ toxic gas emissions.

本研究探讨了联合冷却、加热和电力（CCHP）太阳能辅助系统与氢气生产和碳捕获的集成，以提高能源效率和可持续性。动态模拟了三种情景：常规热电联产（情景A）、太阳能辅助热电联产（情景B）和太阳能辅助氢能集成热电联产（情景C）。一个预测机器学习模型，在美国南佛罗里达州电厂数据的训练下，预测了电网平衡的发电量。结果表明，太阳能和氢气的集成显著提高了系统的性能。与情景A和情景b相比，首选情景（情景C）显示出更高的能源效率、更低的燃料消耗和更低的排放。对情景A和情景C进行了比较分析，以确定光伏一体化的具体贡献。与方案a相比，在太阳辐射峰值（中午12:00）时，方案C实现了44% %的燃料减少，将平准化电力成本（LCOE）从4.72美分/千瓦时降低到3.45美分/千瓦时，并将有毒气体排放量从52.22公斤/千瓦时降低到31.84 公斤/千瓦时。制氢可以在系统中实现燃料的动态混合，通过根据白天和晚上的光伏发电可用性调整氢-甲烷比例来确保系统的运行稳定性。使用GA算法对方案C进行优化，获得58.87 %的火用效率，2.97美分/千瓦时LCOE， 21.71 kg/GJ有毒气体排放。

{"title":"Dynamic modeling, predictive control, and optimization of a multi-scenario CCHP-PV-hydrogen energy system with integrated carbon capture using machine learning algorithms","authors":"Adib Mahmoodi Nasrabadi , Javad Rezazadeh Mehrenjani","doi":"10.1016/j.psep.2025.108235","DOIUrl":"10.1016/j.psep.2025.108235","url":null,"abstract":"<div><div>This study investigates the integration of combined cooling, heating, and power (CCHP) solar-assisted systems alongside hydrogen production and carbon capture to improve energy efficiency and sustainability. Three scenarios were dynamically simulated: conventional CCHP (scenario A), solar-assisted CCHP (scenario B), and solar-assisted CCHP with hydrogen integration (scenario C). A predictive machine learning model, trained on power plant data from South Florida, USA, forecasted electricity generation for grid balancing. Results demonstrated that integrating solar and hydrogen significantly enhanced system performance. The preferred scenario (scenario C) showed improved exergy efficiency, reduced fuel consumption, and lower emissions compared to scenarios A and B. A comparative analysis between Scenarios A and C was conducted to ascertain the specific contributions of PV integration. At peak solar radiation (12:00 PM), scenario C achieved a 44 % fuel reduction, decreased levelized cost of electricity (LCOE) from 4.72 to 3.45 cents/kWh, and lowered toxic gas emissions from 52.22 to 31.84 kg/GJ compared to scenario A. Hydrogen production enables dynamic fuel blending in the system, ensuring operational stability by adjusting the hydrogen-methane ratio based on PV generation availability during the day and night. Optimization using a GA algorithm for scenario C yielded a 58.87 % exergy efficiency, a 2.97 cents/kWh LCOE, and 21.71 kg/GJ toxic gas emissions.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108235"},"PeriodicalIF":7.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145609277","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}

引用次数: 0

Long-term stability of montmorillonite modified with ferrihydrite in freeze-thaw cycles: Enhanced heavy metal immobilization via crystalline transformation 水合铁改性蒙脱土在冻融循环中的长期稳定性：通过结晶转变增强重金属的固定化

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-27 DOI: 10.1016/j.psep.2025.108239

Miao Jiang, Guangzhi Wang, Qingliang Zhao, Kun Wang, Ruiyuan Xue, Liangliang Wei, Junqiu Jiang, Jing Ding

The widespread industrial application of As, Sb, and Pb has resulted in frequent co-contamination of soils, raising significant environmental and public health concerns. Our previous studies demonstrated that amorphous ferrihydrite-modified montmorillonite (amFe@Mont) possesses excellent stabilization capacity; however, its long-term performance under freeze–thaw (F–T) stress has not been investigated. Herein, the stability of amFe@Mont-remediated As/Sb/Pb-contaminated soil was systematically evaluated under 120 repeated F–T cycles using TCLP, SBET, and DTPA extraction methods. Even after 120 cycles, amFe@Mont maintained high immobilization efficiencies of 93.06 % for As, 84.22 % for Sb, and 87.59 % for Pb. Although F–T cycles increased the bioavailability of these metals in untreated soil, amendment with amFe@Mont significantly reduced their extractability. The amendment also modulated key soil properties, including pH, electrical conductivity, redox potential, and organic carbon content. Microbial community analysis revealed adaptive shifts toward heavy metal-resistant and cold-tolerant taxa. Mechanistically, silicon doping from montmorillonite inhibited Fe crystallization, enabling amFe@Mont to retain poorly crystalline Fe oxides that incorporated As and Sb into Fe–O lattices, while Pb immobilization occurred primarily via surface complexation enhanced by Fe oxide transformation. The enrichment of resistant genera such as Ralstonia and cold-tolerant taxa such as Mucilaginibacter further reinforced contaminant stabilization. Collectively, this study provides the first evidence of dual chemical–microbial resilience in Fe–clay composites under F–T stress, offering a promising strategy for the remediation of co-contaminated soils in cold regions.

砷、锑和铅的广泛工业应用导致土壤频繁共污染，引起了重大的环境和公共卫生问题。我们之前的研究表明，非晶水合铁改性蒙脱土（amFe@Mont）具有优异的稳定能力；然而，其在冻融（F-T）应力下的长期性能尚未得到研究。本文采用TCLP、SBET和DTPA提取方法，系统评价了amFe@Mont-remediated As/Sb/ pb污染土壤在120次重复F-T循环下的稳定性。即使在120次循环后，amFe@Mont对As、Sb和Pb的固定效率分别为93.06 %、84.22 %和87.59 %。虽然F-T循环增加了这些金属在未经处理的土壤中的生物利用度，但amFe@Mont的修正显著降低了它们的可提取性。该改剂还调节了关键的土壤性质，包括pH值、电导率、氧化还原电位和有机碳含量。微生物群落分析揭示了向耐重金属和耐寒类群的适应性转变。从机制上看，蒙脱土中的硅掺杂抑制了铁的结晶，使amFe@Mont保留了将As和Sb结合到Fe - o晶格中的低结晶铁氧化物，而铅的固定主要通过铁氧化物转化增强的表面络合发生。耐药属（如Ralstonia）和耐冷分类群（如Mucilaginibacter）的富集进一步增强了污染物的稳定性。总的来说，本研究首次提供了Fe-clay复合材料在F-T胁迫下的双重化学-微生物恢复力的证据，为寒冷地区共污染土壤的修复提供了一个有希望的策略。

{"title":"Long-term stability of montmorillonite modified with ferrihydrite in freeze-thaw cycles: Enhanced heavy metal immobilization via crystalline transformation","authors":"Miao Jiang, Guangzhi Wang, Qingliang Zhao, Kun Wang, Ruiyuan Xue, Liangliang Wei, Junqiu Jiang, Jing Ding","doi":"10.1016/j.psep.2025.108239","DOIUrl":"10.1016/j.psep.2025.108239","url":null,"abstract":"<div><div>The widespread industrial application of As, Sb, and Pb has resulted in frequent co-contamination of soils, raising significant environmental and public health concerns. Our previous studies demonstrated that amorphous ferrihydrite-modified montmorillonite (amFe@Mont) possesses excellent stabilization capacity; however, its long-term performance under freeze–thaw (F–T) stress has not been investigated. Herein, the stability of amFe@Mont-remediated As/Sb/Pb-contaminated soil was systematically evaluated under 120 repeated F–T cycles using TCLP, SBET, and DTPA extraction methods. Even after 120 cycles, amFe@Mont maintained high immobilization efficiencies of 93.06 % for As, 84.22 % for Sb, and 87.59 % for Pb. Although F–T cycles increased the bioavailability of these metals in untreated soil, amendment with amFe@Mont significantly reduced their extractability. The amendment also modulated key soil properties, including pH, electrical conductivity, redox potential, and organic carbon content. Microbial community analysis revealed adaptive shifts toward heavy metal-resistant and cold-tolerant taxa. Mechanistically, silicon doping from montmorillonite inhibited Fe crystallization, enabling amFe@Mont to retain poorly crystalline Fe oxides that incorporated As and Sb into Fe–O lattices, while Pb immobilization occurred primarily via surface complexation enhanced by Fe oxide transformation. The enrichment of resistant genera such as <em>Ralstonia</em> and cold-tolerant taxa such as <em>Mucilaginibacter</em> further reinforced contaminant stabilization. Collectively, this study provides the first evidence of dual chemical–microbial resilience in Fe–clay composites under F–T stress, offering a promising strategy for the remediation of co-contaminated soils in cold regions.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108239"},"PeriodicalIF":7.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145609276","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}

引用次数: 0

CO2-enhanced supercritical water gasification coupled with chemical looping combustion for plastic waste conversion: Thermodynamic and life cycle insights 二氧化碳增强超临界水气化与塑料废物转化的化学循环燃烧：热力学和生命周期见解

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-27 DOI: 10.1016/j.psep.2025.108240

Liangdi Shen, Shuliu Liu, Shengqi Fu, Xinyue Yu, Weihong Zhou, Bin Bai

Supercritical water gasification (SCWG) is a promising pathway for converting plastic waste into hydrogen-rich gases. To enhance efficiency and reduce carbon emissions, this study proposes an integrated system combining CO₂-assisted SCWG with chemical looping combustion (CLC). The system performance is evaluated through thermodynamic analysis and life cycle assessment (LCA), with a focus on the effect of key operating parameters and the transport of exergy and material streams across subsystems. Thermodynamic analysis reveals that major exergy losses occur in the heat exchanger and CLC subsystem consisting of air reactor and fuel reactor, primarily due to irreversible reactions and heat transfer. In contrast, the gasifier and auxiliary units exhibit relatively minor exergy losses. Sensitivity analysis identifies that gasification temperature has the largest effect on exergy efficiency and hydrogen yield, followed by feed concentration, whereas CO₂ reflux ratio, reaction pressure, and oxidation temperature exert smaller effects. Higher gasification temperatures improve system performance, whereas increased feed concentration reduces both efficiency and yield. The system achieves a maximum exergy efficiency of 58.43 % at 700°C, 25 MPa, a feed concentration of 5 wt% and a CO₂ reflux ratio of 0.21. LCA results demonstrate the effectiveness of carbon capture and storage, reducing the global warming potential to 3.05 kg CO₂-eq/kg H₂.

超临界水气化（SCWG）是一种很有前途的将塑料废物转化为富氢气体的途径。为了提高效率和减少碳排放，本研究提出了一种将co2辅助SCWG与化学环燃烧（CLC）相结合的集成系统。通过热力学分析和生命周期评估（LCA）来评估系统性能，重点关注关键操作参数的影响以及跨子系统的火用和物料流的传输。热力学分析表明，主要的火用损失发生在由空气堆和燃料堆组成的换热器和CLC子系统中，主要是由于不可逆反应和传热造成的。相反，气化炉和辅助装置表现出相对较小的火用损失。敏感性分析表明，气化温度对火用效率和产氢率的影响最大，其次是进料浓度，而CO2回流比、反应压力和氧化温度的影响较小。较高的气化温度提高了系统性能，而增加的进料浓度会降低效率和产量。该系统在700°C， 25 MPa，进料浓度5 wt%， CO2回流比0.21时的最大火用效率为58.43 %。LCA结果证明了碳捕获和储存的有效性，将全球变暖潜势降低到3.05 kg CO2-eq/kg H2。

{"title":"CO2-enhanced supercritical water gasification coupled with chemical looping combustion for plastic waste conversion: Thermodynamic and life cycle insights","authors":"Liangdi Shen, Shuliu Liu, Shengqi Fu, Xinyue Yu, Weihong Zhou, Bin Bai","doi":"10.1016/j.psep.2025.108240","DOIUrl":"10.1016/j.psep.2025.108240","url":null,"abstract":"<div><div>Supercritical water gasification (SCWG) is a promising pathway for converting plastic waste into hydrogen-rich gases. To enhance efficiency and reduce carbon emissions, this study proposes an integrated system combining CO<sub>2</sub>-assisted SCWG with chemical looping combustion (CLC). The system performance is evaluated through thermodynamic analysis and life cycle assessment (LCA), with a focus on the effect of key operating parameters and the transport of exergy and material streams across subsystems. Thermodynamic analysis reveals that major exergy losses occur in the heat exchanger and CLC subsystem consisting of air reactor and fuel reactor, primarily due to irreversible reactions and heat transfer. In contrast, the gasifier and auxiliary units exhibit relatively minor exergy losses. Sensitivity analysis identifies that gasification temperature has the largest effect on exergy efficiency and hydrogen yield, followed by feed concentration, whereas CO<sub>2</sub> reflux ratio, reaction pressure, and oxidation temperature exert smaller effects. Higher gasification temperatures improve system performance, whereas increased feed concentration reduces both efficiency and yield. The system achieves a maximum exergy efficiency of 58.43 % at 700°C, 25 MPa, a feed concentration of 5 wt% and a CO<sub>2</sub> reflux ratio of 0.21. LCA results demonstrate the effectiveness of carbon capture and storage, reducing the global warming potential to 3.05 kg CO<sub>2</sub>-eq/kg H<sub>2</sub>.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108240"},"PeriodicalIF":7.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145611892","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}

引用次数: 0

From fiber waste to multifunctional material: Improving building acoustics and hygrothermal performance 从废纤维到多功能材料：改善建筑声学和热湿性能

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-27 DOI: 10.1016/j.psep.2025.108244

Dongchan Jin, Seong Taek Kang, Ji Yong Choi, Sumin Kim

The construction industry faces increasing pressure to adopt sustainable materials, particularly as buildings continue to grow in size, mass, and environmental impact. At the same time, post-consumer clothing waste has emerged as one of the fastest-growing yet least utilized solid waste streams worldwide, posing serious environmental challenges due to its complex composition and low biodegradability. This study explores the architectural potential of unsorted clothing waste as a scalable solution for developing multifunctional interior materials that meet both acoustic and hygro-thermal performance requirements for buildings. Using a simplified thermo-mechanical processing method without chemical additives or material sorting, fabricated fiber insulation panels from heterogeneous fiber waste. Microstructural analysis revealed a highly porous network structure with a porosity exceeding 85 %, which facilitated both thermal insulation and sound absorption. Impedance tube tests demonstrated an average sound absorption coefficient exceeding 0.8 in the mid- to high-frequency range, and heat flow meter measurements confirmed thermal conductivity comparable to that of conventional fiber-based insulation. Practical applicability was further validated through ODEON simulations in a full-scale café environment. Increasing the panel area significantly improved reverberation time and speech intelligibility. This study suggest a feasible way to upcycle post-consumer textile waste into high-performance, multifunctional building materials, supporting circular construction practices while also improving the indoor environmental quality of large-scale buildings.

建筑行业面临着越来越大的采用可持续材料的压力，特别是随着建筑规模、质量和环境影响的不断增长。与此同时，消费后的服装废物已成为世界上增长最快但利用率最低的固体废物流之一，由于其复杂的成分和低生物降解性，构成了严重的环境挑战。本研究探讨了未分类的服装废弃物作为开发多功能室内材料的可扩展解决方案的建筑潜力，该材料可满足建筑物的声学和湿热性能要求。采用简化的热机械加工方法，无需化学添加剂或材料分选，以非均质纤维废料为原料制备纤维绝热板。微观结构分析表明，其孔隙率超过85% %，具有高度多孔的网状结构，有利于隔热和吸声。阻抗管测试表明，在中高频范围内，平均吸声系数超过0.8，热流计测量证实，导热系数与传统的纤维基绝热材料相当。通过在全尺寸咖啡环境中的ODEON模拟，进一步验证了其实用性。增加面板面积显著改善混响时间和语音清晰度。本研究提出了一种可行的方法，将消费后的纺织废料升级为高性能、多功能的建筑材料，支持循环建筑实践，同时改善大型建筑的室内环境质量。

{"title":"From fiber waste to multifunctional material: Improving building acoustics and hygrothermal performance","authors":"Dongchan Jin, Seong Taek Kang, Ji Yong Choi, Sumin Kim","doi":"10.1016/j.psep.2025.108244","DOIUrl":"10.1016/j.psep.2025.108244","url":null,"abstract":"<div><div>The construction industry faces increasing pressure to adopt sustainable materials, particularly as buildings continue to grow in size, mass, and environmental impact. At the same time, post-consumer clothing waste has emerged as one of the fastest-growing yet least utilized solid waste streams worldwide, posing serious environmental challenges due to its complex composition and low biodegradability. This study explores the architectural potential of unsorted clothing waste as a scalable solution for developing multifunctional interior materials that meet both acoustic and hygro-thermal performance requirements for buildings. Using a simplified thermo-mechanical processing method without chemical additives or material sorting, fabricated fiber insulation panels from heterogeneous fiber waste. Microstructural analysis revealed a highly porous network structure with a porosity exceeding 85 %, which facilitated both thermal insulation and sound absorption. Impedance tube tests demonstrated an average sound absorption coefficient exceeding 0.8 in the mid- to high-frequency range, and heat flow meter measurements confirmed thermal conductivity comparable to that of conventional fiber-based insulation. Practical applicability was further validated through ODEON simulations in a full-scale café environment. Increasing the panel area significantly improved reverberation time and speech intelligibility. This study suggest a feasible way to upcycle post-consumer textile waste into high-performance, multifunctional building materials, supporting circular construction practices while also improving the indoor environmental quality of large-scale buildings.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108244"},"PeriodicalIF":7.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145611890","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}

引用次数: 0

Fuzzy optimization on the synthesis of biodegradable plastic based on cost and tensile strength 基于成本和抗拉强度的生物降解塑料合成的模糊优化

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-26 DOI: 10.1016/j.psep.2025.108233

Ralph Emmanuel M. Manlulu, Gamille Marie V. Silva, Alijaeh Joshua A. Go, Jose Antonio R. Calero, Kathleen B. Aviso, Angelo Earvin Sy Choi

The accumulation of conventional synthetic plastics in ecosystems is a pressing environmental concern, driving the need for sustainable alternatives. Biodegradable plastics offer a promising solution to mitigate the long-term ecological impact of plastic waste due to their compostability. The fuzzy optimization approach can be used for simultaneous optimization of mechanical properties and cost in the production of biodegradable plastic. Previous studies have primarily focused on the optimization of biodegradable plastic production through response surface methodology (RSM) without accounting for cost efficiency. This study assesses the production efficiency encompassing tensile strength with its cumulative uncertainty error and material cost to ascertain the optimal conditions for a cost-effective biodegradable plastic. The fuzzy optimization method was utilized to evaluate the combined effects of cost and tensile strength. The method optimized the parameters while considering the conflicting objectives. The fuzzy model maximized the level of satisfaction, ranging from 0 (unsatisfied) to 1 (satisfied), through the max-min aggregation approach, achieved under optimal conditions of 1.5 g chitosan, 5.0 g starch, and 3.0 g PVA. These conditions resulted in a tensile strength of 22.89 kPa, with a corresponding material cost of 1365.46 USD/kg and cumulative uncertainty error of 3.03 %. Compared to the RSM optimization method, the tensile strength achieved through fuzzy optimization was 13.26 % lower but offered significant cost reductions of 51.48 %. The outcomes presented by fuzzy optimization showcase the economic feasibility of producing biodegradable plastic with enhanced tensile strength and reduced production costs.

传统合成塑料在生态系统中的积累是一个紧迫的环境问题，推动了对可持续替代品的需求。可生物降解塑料由于其可堆肥性，为减轻塑料废物的长期生态影响提供了一个有希望的解决方案。模糊优化方法可用于生物降解塑料生产过程中力学性能和成本的同时优化。以往的研究主要集中在通过响应面法（RSM）优化生物降解塑料生产，而没有考虑成本效率。本研究评估了包括抗拉强度及其累积不确定性误差和材料成本在内的生产效率，以确定具有成本效益的生物降解塑料的最佳条件。采用模糊优化方法对成本和抗拉强度的综合影响进行了评价。该方法在考虑目标冲突的情况下对参数进行了优化。通过最大-最小聚合法，模糊模型在1.5 g壳聚糖、5.0 g淀粉和3.0 g PVA的最优条件下获得了最大的满意度，从0（不满意）到1（满意）。这些条件下得到的抗拉强度为22.89 kPa，相应的材料成本为1365.46美元/公斤，累积不确定度误差为3.03 %。与RSM优化方法相比，模糊优化获得的抗拉强度降低13.26 %，但成本显著降低51.48 %。模糊优化结果表明，生产抗拉强度提高、生产成本降低的生物降解塑料具有经济可行性。

{"title":"Fuzzy optimization on the synthesis of biodegradable plastic based on cost and tensile strength","authors":"Ralph Emmanuel M. Manlulu, Gamille Marie V. Silva, Alijaeh Joshua A. Go, Jose Antonio R. Calero, Kathleen B. Aviso, Angelo Earvin Sy Choi","doi":"10.1016/j.psep.2025.108233","DOIUrl":"10.1016/j.psep.2025.108233","url":null,"abstract":"<div><div>The accumulation of conventional synthetic plastics in ecosystems is a pressing environmental concern, driving the need for sustainable alternatives. Biodegradable plastics offer a promising solution to mitigate the long-term ecological impact of plastic waste due to their compostability. The fuzzy optimization approach can be used for simultaneous optimization of mechanical properties and cost in the production of biodegradable plastic. Previous studies have primarily focused on the optimization of biodegradable plastic production through response surface methodology (RSM) without accounting for cost efficiency. This study assesses the production efficiency encompassing tensile strength with its cumulative uncertainty error and material cost to ascertain the optimal conditions for a cost-effective biodegradable plastic. The fuzzy optimization method was utilized to evaluate the combined effects of cost and tensile strength. The method optimized the parameters while considering the conflicting objectives. The fuzzy model maximized the level of satisfaction, ranging from 0 (unsatisfied) to 1 (satisfied), through the max-min aggregation approach, achieved under optimal conditions of 1.5 g chitosan, 5.0 g starch, and 3.0 g PVA. These conditions resulted in a tensile strength of 22.89 kPa, with a corresponding material cost of 1365.46 USD/kg and cumulative uncertainty error of 3.03 %. Compared to the RSM optimization method, the tensile strength achieved through fuzzy optimization was 13.26 % lower but offered significant cost reductions of 51.48 %. The outcomes presented by fuzzy optimization showcase the economic feasibility of producing biodegradable plastic with enhanced tensile strength and reduced production costs.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108233"},"PeriodicalIF":7.8,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145609307","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}

引用次数: 0

Assessing leak detection and localization techniques for application in end-of-line leakage stations in the industrial sector 评估泄漏检测和定位技术在工业部门终端泄漏站的应用

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-26 DOI: 10.1016/j.psep.2025.108176

Ângela Semitela , António Completo

Leak localization is a crucial step to ensure product quality and operational efficiency in end-of-line (EOL) leakage testing stations. Traditional fuel-based leakage tests are being gradually replaced by compressed air testing due to its environmental benefits and cost-effectiveness. However, accurately detecting and localizing leaks with compressed air-based systems remains challenging, primarily because conventional detection methods rely on the presence of hydrocarbons. This review provides a comprehensive analysis of existing leak detection and localization techniques, assessing their technical feasibility and economic viability for EOL testing stations. Furthermore, it highlights key considerations related to safety and risk assessment. To identify the most effective methodologies for compressed air-based EOL leakage testing, an adaptability evaluation was performed, considering key criteria such as compatibility with EOL stations, localization accuracy, ease of implementation, and cost-effectiveness. Acoustic technology and infrared thermography were found to be the most suitable solutions for this specific scenario, providing real-time leak detection and localization with high accuracy and seamless integration into existing testing stations without requiring major structural alterations. Ultimately, this review emphasizes the importance of selecting cost-effective and adaptable leak detection technologies to enhance production efficiency and sustainability. Future research should focus on further refining these methods, focusing on automation and integration with artificial intelligence-based tools to further improve leak localization in industrial EOL environments.

泄漏定位是生产线末端（EOL）泄漏检测站保证产品质量和运行效率的关键步骤。由于其环境效益和成本效益，传统的基于燃料的泄漏测试正逐渐被压缩空气测试所取代。然而，使用压缩空气系统准确检测和定位泄漏仍然具有挑战性，主要是因为传统的检测方法依赖于碳氢化合物的存在。本文全面分析了现有的泄漏检测和定位技术，评估了它们在EOL检测站的技术可行性和经济可行性。此外，它还强调了与安全和风险评估相关的关键考虑因素。为了确定最有效的基于压缩空气的EOL泄漏测试方法，进行了适应性评估，考虑了与EOL站的兼容性、定位精度、易于实施和成本效益等关键标准。声学技术和红外热成像技术被认为是最适合这种特殊情况的解决方案，可以提供高精度的实时泄漏检测和定位，并且无需对现有测试站进行重大结构更改即可无缝集成。最后，本文强调了选择具有成本效益和适应性的泄漏检测技术以提高生产效率和可持续性的重要性。未来的研究应侧重于进一步完善这些方法，注重自动化和与基于人工智能的工具的集成，以进一步提高工业EOL环境中的泄漏定位。

{"title":"Assessing leak detection and localization techniques for application in end-of-line leakage stations in the industrial sector","authors":"Ângela Semitela , António Completo","doi":"10.1016/j.psep.2025.108176","DOIUrl":"10.1016/j.psep.2025.108176","url":null,"abstract":"<div><div>Leak localization is a crucial step to ensure product quality and operational efficiency in end-of-line (EOL) leakage testing stations. Traditional fuel-based leakage tests are being gradually replaced by compressed air testing due to its environmental benefits and cost-effectiveness. However, accurately detecting and localizing leaks with compressed air-based systems remains challenging, primarily because conventional detection methods rely on the presence of hydrocarbons. This review provides a comprehensive analysis of existing leak detection and localization techniques, assessing their technical feasibility and economic viability for EOL testing stations. Furthermore, it highlights key considerations related to safety and risk assessment. To identify the most effective methodologies for compressed air-based EOL leakage testing, an adaptability evaluation was performed, considering key criteria such as compatibility with EOL stations, localization accuracy, ease of implementation, and cost-effectiveness. Acoustic technology and infrared thermography were found to be the most suitable solutions for this specific scenario, providing real-time leak detection and localization with high accuracy and seamless integration into existing testing stations without requiring major structural alterations. Ultimately, this review emphasizes the importance of selecting cost-effective and adaptable leak detection technologies to enhance production efficiency and sustainability. Future research should focus on further refining these methods, focusing on automation and integration with artificial intelligence-based tools to further improve leak localization in industrial EOL environments.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108176"},"PeriodicalIF":7.8,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145598656","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}

引用次数: 0

Opportunities and challenges in RCCI combustion using liquid low reactivity fuels for sustainable internal combustion engines− A review 可持续内燃机中使用液体低反应性燃料的RCCI燃烧的机遇与挑战综述

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-26 DOI: 10.1016/j.psep.2025.108218

Shiv Mangal Singh , S.P.S. Rajput

The extensive application of internal combustion engines (ICEs) in transportation, agriculture, and power generation has led to concerns regarding fossil fuel depletion, harmful emissions, and their adverse environmental impact. To address these challenges, researchers are focusing on advanced low-temperature combustion (LTC) strategies that comply with stringent emission regulations while improving specific fuel consumption. Reactivity Controlled Compression Ignition (RCCI) is a promising LTC approach that enables simultaneous reduction of nitrogen oxides (NOx) and particulate matter (PM) emissions while achieving higher thermal efficiency compared to Conventional Diesel Combustion (CDC). This review provides a comprehensive analysis of RCCI combustion employing liquid Low Reactivity Fuels (LRFs) including gasoline, low and high carbon alcohols, highlighting their effects on ignition delay, combustion phasing, and Heat Release Rate (HRR). It further investigates key parameters such as reactivity gradient, premixed ratio (PR), injection strategy, exhaust gas recirculation (EGR) rate, and compression ratio (CR), emphasizing their roles in controlling combustion stability, thermal efficiency, and emissions. Furthermore, the review addresses challenges associated with RCCI, including cold start, combustion control under varying loads, and emissions of carbon monoxide (CO) and unburnt hydrocarbons (UHC), and explores potential solutions such as intake air heating and optimized fuel reactivity stratification for improved cold start performance, EGR and injection timing control for stable combustion, and enhanced air–fuel mixing and after-treatment systems for emission reduction. By synthesizing recent advancements in RCCI combustion focusing on LRFs, this review guides future research and practical implementation in sustainable engine technologies, optimizing performance and reducing environmental impact.

内燃机在交通运输、农业和发电领域的广泛应用引起了人们对化石燃料消耗、有害排放及其对环境的不利影响的关注。为了应对这些挑战，研究人员正在关注先进的低温燃烧（LTC）策略，以符合严格的排放法规，同时提高比油耗。反应性控制压缩点火（RCCI）是一种很有前途的LTC方法，可以同时减少氮氧化物（NOx）和颗粒物（PM）的排放，同时实现比传统柴油燃烧（CDC）更高的热效率。本文综合分析了使用液体低反应性燃料（lrf）的RCCI燃烧，包括汽油、低碳和高碳醇，重点介绍了它们对点火延迟、燃烧相位和热释放率（HRR）的影响。进一步研究了反应性梯度、预混比（PR）、喷射策略、废气再循环（EGR）速率和压缩比（CR）等关键参数，强调了它们在控制燃烧稳定性、热效率和排放方面的作用。此外，本文还探讨了与RCCI相关的挑战，包括冷启动、不同负荷下的燃烧控制、一氧化碳（CO）和未燃烧碳氢化合物（UHC）排放，并探讨了潜在的解决方案，如进气加热和优化燃料反应性分层，以改善冷启动性能，EGR和喷射定时控制，以稳定燃烧，以及增强空气燃料混合和后处理系统，以减少排放。通过综合RCCI燃烧的最新进展，重点是lrf，本文综述了可持续发动机技术的未来研究和实际实施，优化性能并减少对环境的影响。

{"title":"Opportunities and challenges in RCCI combustion using liquid low reactivity fuels for sustainable internal combustion engines− A review","authors":"Shiv Mangal Singh , S.P.S. Rajput","doi":"10.1016/j.psep.2025.108218","DOIUrl":"10.1016/j.psep.2025.108218","url":null,"abstract":"<div><div>The extensive application of internal combustion engines (ICEs) in transportation, agriculture, and power generation has led to concerns regarding fossil fuel depletion, harmful emissions, and their adverse environmental impact. To address these challenges, researchers are focusing on advanced low-temperature combustion (LTC) strategies that comply with stringent emission regulations while improving specific fuel consumption. Reactivity Controlled Compression Ignition (RCCI) is a promising LTC approach that enables simultaneous reduction of nitrogen oxides (NOx) and particulate matter (PM) emissions while achieving higher thermal efficiency compared to Conventional Diesel Combustion (CDC). This review provides a comprehensive analysis of RCCI combustion employing liquid Low Reactivity Fuels (LRFs) including gasoline, low and high carbon alcohols, highlighting their effects on ignition delay, combustion phasing, and Heat Release Rate (HRR). It further investigates key parameters such as reactivity gradient, premixed ratio (PR), injection strategy, exhaust gas recirculation (EGR) rate, and compression ratio (CR), emphasizing their roles in controlling combustion stability, thermal efficiency, and emissions. Furthermore, the review addresses challenges associated with RCCI, including cold start, combustion control under varying loads, and emissions of carbon monoxide (CO) and unburnt hydrocarbons (UHC), and explores potential solutions such as intake air heating and optimized fuel reactivity stratification for improved cold start performance, EGR and injection timing control for stable combustion, and enhanced air–fuel mixing and after-treatment systems for emission reduction. By synthesizing recent advancements in RCCI combustion focusing on LRFs, this review guides future research and practical implementation in sustainable engine technologies, optimizing performance and reducing environmental impact.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108218"},"PeriodicalIF":7.8,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145609278","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}

引用次数: 0

Efficient charge carrier separation over [Mo7O24]6- polyanions-intercalated porous graphitic carbon nitride for remarkably enhanced photocatalytic performance [Mo7O24]6-聚阴离子插层多孔石墨氮化碳的高效载流子分离及其光催化性能的显著提高

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-11-26 DOI: 10.1016/j.psep.2025.108227

Jiajia Liu , Yaodi Fu , Shimei Liu , Ping Li , Banpeng Cao , Lihong Cheng , Jingjing Liu , Yi Tang , Xiangshu Chen , Hidetoshi Kita , Lingfang Qiu , Shuwang Duo

Ion intercalation technique is an effective strategy for enhancing the separation of photogenerated electron-hole pairs in photocatalysis. In this work, a novel [Mo₇O₂₄]^6- polyanions-intercalated porous graphitic carbon nitride (MPCN) was synthesized through straightforward calcination process, based on the simple disolution-mixing of precursors and the drying-grinding treatment of the product. By optimizing the intercalation ratio of [Mo₇O₂₄]^6- polyanions, the resulting MPCN demonstrated not only an extended light absorption range, but also an increased number of active sites. Furthermore, O atoms in the intercalated [Mo₇O₂₄]^6- polyanions acted as efficient electron acceptors, effectively extracting photo-induced electrons from PCN and thereby promoting photo-induced carrier separation. Driven by the local electric field, the optimized MPCN exhibited a remarkable H₂ evolution rate of 1.08 mmol/g/h, surpassing that of pristine CN and PCN by factors of 2.5 and 2.3, respectively. Additionally, MPCN also behaved superior photocatalytic activity in the degradation of RhB. This work provides a promising approach for addressing energy shortages and environmental remediation through advanced photocatalyst design.

离子插入技术是光催化中提高光生电子-空穴对分离的有效策略。本文以前驱体的简单溶解-混合和产品的干燥-研磨处理为基础，通过直接煅烧工艺合成了一种新型的[Mo7O24]6-聚阴离子插层多孔石墨氮化碳（MPCN）。通过优化[Mo7O24]6-聚阴离子的插层比，得到的MPCN不仅具有更大的光吸收范围，而且活性位点数量也有所增加。此外，插入的[Mo7O24]6-多阴离子中的O原子作为有效的电子受体，有效地从PCN中提取光诱导电子，从而促进光诱导载流子分离。在局部电场的驱动下，优化后的MPCN的氢气析出速率为1.08 mmol/g/h，分别是原始CN和PCN的2.5倍和2.3倍。此外，MPCN对RhB的降解也表现出优异的光催化活性。这项工作为通过先进的光催化剂设计解决能源短缺和环境修复提供了一种有希望的方法。

{"title":"Efficient charge carrier separation over [Mo7O24]6- polyanions-intercalated porous graphitic carbon nitride for remarkably enhanced photocatalytic performance","authors":"Jiajia Liu , Yaodi Fu , Shimei Liu , Ping Li , Banpeng Cao , Lihong Cheng , Jingjing Liu , Yi Tang , Xiangshu Chen , Hidetoshi Kita , Lingfang Qiu , Shuwang Duo","doi":"10.1016/j.psep.2025.108227","DOIUrl":"10.1016/j.psep.2025.108227","url":null,"abstract":"<div><div>Ion intercalation technique is an effective strategy for enhancing the separation of photogenerated electron-hole pairs in photocatalysis. In this work, a novel [Mo<sub>7</sub>O<sub>24</sub>]<sup>6-</sup> polyanions-intercalated porous graphitic carbon nitride (MPCN) was synthesized through straightforward calcination process, based on the simple disolution-mixing of precursors and the drying-grinding treatment of the product. By optimizing the intercalation ratio of [Mo<sub>7</sub>O<sub>24</sub>]<sup>6-</sup> polyanions, the resulting MPCN demonstrated not only an extended light absorption range, but also an increased number of active sites. Furthermore, O atoms in the intercalated [Mo<sub>7</sub>O<sub>24</sub>]<sup>6-</sup> polyanions acted as efficient electron acceptors, effectively extracting photo-induced electrons from PCN and thereby promoting photo-induced carrier separation. Driven by the local electric field, the optimized MPCN exhibited a remarkable H<sub>2</sub> evolution rate of 1.08 mmol/g/h, surpassing that of pristine CN and PCN by factors of 2.5 and 2.3, respectively. Additionally, MPCN also behaved superior photocatalytic activity in the degradation of RhB. This work provides a promising approach for addressing energy shortages and environmental remediation through advanced photocatalyst design.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"205 ","pages":"Article 108227"},"PeriodicalIF":7.8,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145609303","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}

引用次数: 0