Huan Wang , Kan Wai Hong Tsui , Qingxia Jenny Wang , Hanjun Wu , Xiaowen Fu , Fan Hu
{"title":"How do board governance and operational management affect carbon emissions among full-service and low-cost carriers?","authors":"Huan Wang , Kan Wai Hong Tsui , Qingxia Jenny Wang , Hanjun Wu , Xiaowen Fu , Fan Hu","doi":"10.1016/j.jclepro.2025.146785","DOIUrl":"10.1016/j.jclepro.2025.146785","url":null,"abstract":"<div><div>This study analyses 35 global airlines, comprising 17 full-service carriers (FSCs) and 18 low-cost carriers (LCCs), to examine how different business models, specifically board governance and operational management factors, influence carbon emissions. The findings show that LCCs generally produce lower total carbon emissions than FSCs, primarily due to their smaller operational scale and more uniform fleets. However, further interaction analyses reveal that, when other factors are held constant, certain LCC practices, such as board remuneration schemes and short-haul network structures, are positively associated with total carbon emissions compared with those of FSCs. The study also offers practical recommendations for airline managers and industry professionals who are aiming to balance cost efficiency with environmental responsibility. These insights help airlines operating under different business models reduce their overall carbon footprint.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"529 ","pages":"Article 146785"},"PeriodicalIF":10.0,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Cathodic enhanced electrokinetic remediation of PFOA contaminated soil: Auxiliary agents-enhanced desorption and migration","authors":"Mengwei Li, Guangli Xiu, Wei Zhang","doi":"10.1016/j.jclepro.2025.146698","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146698","url":null,"abstract":"Electrokinetic (EK) remediation is a promising in-situ technique for remediating soils contaminated with persistent pollutants, but its efficiency is often limited by poor pollutant desorption and migration. This study explores the use of cathodic auxiliary agents to enhance the EK remediation of PFOA-contaminated soil. Among the desorption tests, SDS (50.93 %) and NaC (43.62 %) were most effective in desorbing PFOA through electrostatic, hydrophobic interactions, and micelle formation, outperforming DTAB (15.29 %) and CA (37.76 %). Continuous desorption tests validated the effectiveness of employing auxiliary agents as electrolytes. EK remediation experiments revealed that these agents facilitated PFOA desorption and migration, achieving higher removal efficiencies. After 7 d, NaC achieved a greater enhancement effect than SDS, with PFOA removal rates of 58.04 % (2 V/cm) and 63.70 % (2 V/cm), respectively. PFOA accumulation in the middle soil area was observed, due to opposing electroosmotic and electrokinetic forces, with electromigration being the dominant factor. Extending remediation time alleviated this accumulation. Kinetic analysis revealed that PFOA migration in most areas followed pseudo-second-order kinetics, while the middle area exhibited first-order kinetics due to PFOA accumulation. The auxiliary agents primarily enhanced PFOA removal efficiency indirectly by influencing electromigration, electroosmosis, and desorption processes, while changes in soil physicochemical properties served as limiting factors. This study provides valuable insights into the combined effects of cathodic-enhanced EK and auxiliary agents on PFOA remediation, offering theoretical and practical guidance for the development of efficient and sustainable remediation technologies.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"50 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Alexander Guzman-Urbina, Naomi Kitagawa, Delmaria Richards, Erina Kourogi, Shinichirou Morimoto
{"title":"Advancing e-methanol systems via direct air carbon capture, CO2 hydrogenation, and hydrothermal co-electrolysis","authors":"Alexander Guzman-Urbina, Naomi Kitagawa, Delmaria Richards, Erina Kourogi, Shinichirou Morimoto","doi":"10.1016/j.jclepro.2025.146699","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146699","url":null,"abstract":"Climate change mitigation is increasingly driven by the urgent need for carbon-neutral fuels and chemicals, particularly in sectors where direct electrification is impractical. Among emerging solutions, e-methanol, synthesized from captured CO<sub>2</sub> and green hydrogen, has been recognized as a scalable liquid energy carrier compatible with existing infrastructure. However, current system designs often evaluate carbon capture, hydrogen production, and methanol (MeOH) synthesis in isolation, with limited emphasis on integration or region-specific deployment. In this study, a novel process design, simulation model, and life cycle CO<sub>2</sub> performance analysis have been developed for two integrated e-MeOH production pathways based on Direct Air Capture (DAC): one using direct CO<sub>2</sub> hydrogenation (DS) and the other relying on hydrothermal co-electrolysis synthesis (HS). In both configurations, internal integrations are leveraged, such as the use of raw MeOH as an internal fuel, electrolytic oxygen reuse, and thermal integration between subsystems. The hydrothermal co-electrolysis pathway was found to outperform the direct synthesis route in both environmental and energy metrics. For a conceptual 0.3 Mt/y MeOH plant located in Japan, cradle-to-gate emissions were reduced to −0.367 kg-CO<sub>2</sub>eq/kg-MeOH for HS, compared to 0.519 for DS and 1.370 for the conventional route. Greater heat recovery further lowered energy demand. A regional sensitivity analysis indicated that in regions with low-carbon electricity (for example, in Canada), DAC-based e-methanol could achieve near-zero emissions. These findings underscore the importance of process integration and geographic energy context in determining e-methanol viability. A quantitative basis is provided to inform the scalable and regionally adaptive implementation of synthetic fuel technologies.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"32 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Yining Huang, Xiaohan Cui, Miaomiao Liu, Jianxun Yang, Wen Fang, Zongwei Ma, Jun Bi
{"title":"Mapping public behavioral intentions for mitigation and adaptation to air pollution in China","authors":"Yining Huang, Xiaohan Cui, Miaomiao Liu, Jianxun Yang, Wen Fang, Zongwei Ma, Jun Bi","doi":"10.1016/j.jclepro.2025.146775","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146775","url":null,"abstract":"Active public engagement in air pollution coping behaviors is essential for sustained air quality improvements. These behaviors fall into two categories: mitigation behaviors (reducing emissions), and adaptation behaviors (minimizing health risks), with the latter subdivided into in-situ adaptations (e.g., mask-wearing) and mobility adaptations (e.g., modifying traffic modes). Mitigation and adaptation behaviors are shaped by distinct mechanisms. However, existing research has primarily focused on adaptation behaviors without systematically comparing across different behavior types. Applying adaptation-based insights to other types may undermine policy effectiveness. Moreover, most studies rely on data from limited cities, hindering understanding of national landscape and spatial variability. To address these gaps, we conducted a nationwide survey of 7457 participants across 28 Chinese provinces. Structural equation modeling was used to compare determinants of mitigation and adaptation intentions. Multilevel regression and poststratification (MRP) generated the first city-level estimates in China. Our results revealed three common drivers that consistently enhance public engagement across behaviors: perceived risk severity, perceived benefits of clean air, and socioeconomic status. However, mitigation and adaptation intentions followed distinct cognitive pathways-adaptation was shaped by dread and risk controllability, while mitigation was driven by knowledge and trust. Within adaptation, in-situ and mobility behaviors showed divergent determinants. Objective pollution indirectly shaped in-situ adaptations via perceived risk, and exerted both direct negative and indirect positive effects on other intentions. Furthermore, MRP analysis revealed three city-level patterns: economic development-driven, pollution-driven, and jointly-driven behaviors. These findings provide practical guidance for designing targeted interventions to enhance public engagement in future clean air initiatives.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"28 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Thi Sinh Vo, Nur Elis Sharmila binti Zulazmi, Uiseok Hwang, Soobean Han, Min Jeong Kim, Duy Tho Pham, Van Quang Nguyen, Kyunghoon Kim
{"title":"Magnetically retrievable 3D biopolymer sponges for enhanced removal and recycling of organic dyes","authors":"Thi Sinh Vo, Nur Elis Sharmila binti Zulazmi, Uiseok Hwang, Soobean Han, Min Jeong Kim, Duy Tho Pham, Van Quang Nguyen, Kyunghoon Kim","doi":"10.1016/j.jclepro.2025.146747","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146747","url":null,"abstract":"Synthetic dyes possess high toxicity, chemical stability, and resistance to biodegradation, posing severe environmental hazards. Therefore, their efficient removal from wastewater is essential. In this study, biodegradable and magnetically retrievable hybrid biopolymer sponges were fabricated from a gelatin–chitosan (Gel–Chi) matrix via freeze-drying and reinforced with Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (MNPs) and pectin-coated Fe<sub>3</sub>O<sub>4</sub> magnetic nanocomposites (MNCs). The resulting porous Gel–Chi–MNP (PS) and Gel–Chi–MNC (CS) sponges exhibited hierarchical porosity, tunable surface charge, and robust mechanical stability. Adsorption studies using methylene blue (MB, cationic) and methyl orange (MO, anionic) revealed maximum adsorption capacities of 312.4 mg g<sup>−1</sup> for MB and 276.8 mg g<sup>−1</sup> for MO under optimized conditions. Adsorption isotherms followed both Langmuir and Freundlich models, confirming the coexistence of monolayer and heterogeneous multilayer adsorption, while kinetic analysis indicated a hybrid mechanism involving physisorption and chemisorption. Notably, CS sponges displayed superior swelling capacity, higher reusability, and improved structural integrity compared with PS sponges, owing to the pectin coating that enhanced hydrophilicity and electrostatic interactions. The sponges retained >85 % of their dye removal efficiency after five successive adsorption–desorption cycles, demonstrating excellent regeneration potential. Furthermore, cost analysis and preliminary tests with metal ions validated their economic viability and versatility for practical wastewater treatment. Thereby, the Gel–Chi–MNC sponges represent sustainable, scalable, and environmentally friendly adsorbents for efficient dye removal and recycling.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"4 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A novel framework for integrated assessment of reclaimed water demand potential in China","authors":"Zhou Ying, Wu Fengping, Feng Chen, Li Gen","doi":"10.1016/j.jclepro.2025.146784","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146784","url":null,"abstract":"As global water scarcity intensifies, reclaimed water has emerged as a critical sustainable alternative to conventional resources. This study develops an innovative measurement system to assess regional reclaimed water demand potential index (RDPI) in China, revealing a significant east-west disparity along the Hu Line. Using internal-external factor analysis, we identify key drivers and constraints. The results of the study show that: (1) Jiangsu and Xinjiang exhibit the highest demand potential, the RDPI in the eastern region is higher than that in the western region. (2) Kernel density analysis shows rising potential in eastern and central regions, while the west follows a multipolar pattern. From 2015 to 2023, the Gini coefficient showed a fluctuating trend of “decreasing-increasing-decreasing” with an overall downward trend. (3) The RDPI on both sides of the Hu Line is significantly constrained by the <em>S</em><sub><em>8</em></sub> (density of reclaimed water pipes in built-up areas) and <em>E</em><sub><em>2</em></sub> (water resources per capita) obstacle factors. External driving factors show that RDPI in western regions is mainly driven by the synergistic effects of economic detectors and industrial detectors, while in eastern regions, the impact of key polluting industries and environmental awareness is more pronounced. This study provides actionable insights for policymakers to optimize reclaimed water utilization, addressing regional imbalances and sustainability challenges.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"16 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Low-carbon optimal scheduling integrating precision plant carbon sequestration supplementation with energy system synergy in rural full-chain carbon cycles","authors":"Liai Gao, Changhong Wang, Peng Wen, Chen Shao, Hanyu Geng, Ziqi Wang","doi":"10.1016/j.jclepro.2025.146754","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146754","url":null,"abstract":"Promoting deep decarbonization of energy systems is crucial for achieving China's carbon peaking and carbon neutrality goals. Plant carbon sequestration, as a key carbon sink pathway, has not yet been incorporated as a schedulable resource into existing energy optimization systems. To address this limitation, this study proposes a low-carbon optimal scheduling method that integrates precise plant carbon sequestration replenishment with energy systems. First, a five-dimensional synergistic rural energy system architecture encompassing source-grid-load-storage-carbon is established to achieve flexible resource scheduling. Second, a coupling model integrating carbon capture system, power-to-gas, and plant carbon sequestration is developed to facilitate coordinated regulation of carbon sources and sinks, establishing a full-chain carbon cycle. Finally, a bi-level collaborative optimization scheduling method is proposed to simultaneously optimize carbon flow allocation and energy dispatch. Simulations conducted on a rural energy system in Hebei Province, China, demonstrate that the proposed coupling model reduces operating costs by 12.8 %, increases the carbon-energy utilization efficiency to 20.3 %, and lowers the carbon emission intensity by 7.41 %, compared to the baseline scenario. The implementation of the bi-level optimization method further reduces the total operating cost by 13.4 % and decreases the reliance on externally procured carbon sources by 71.1 %, thereby simultaneously minimizing system operating costs and maximizing carbon trading benefits. This study provides a replicable technical solution for the low-carbon transition of rural energy systems. Future research should consider the impact of seasonal variations on the model and enhance the model's adaptability to various crops and greenhouse structures.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"103 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Critical paths and sectors for upstream and downstream carbon emissions of digital industry: A case study of Beijing, China","authors":"Yuke Li , Yongbin Zhu , Jing Wu","doi":"10.1016/j.jclepro.2025.146745","DOIUrl":"10.1016/j.jclepro.2025.146745","url":null,"abstract":"<div><div>With the rapid development of the digital industry, its carbon emissions have become one of the important issues for cities to deal with climate change. However, existing research lacks an exploration of the mechanism from the industry chain perspective. This study uses Structural Path Analysis and Betweenness-based methods to explore the key transmission paths and responsible sectors for upstream and downstream carbon emissions of Beijing's digital industry chain from 2017 to 2020. The results show that: (1) Carbon emissions from digital industries in Beijing show an upward trend, and the induced carbon emissions driven by the upstream and downstream of the industrial chain are the main contributors; (2) The upstream carbon emission path of the digital industry chain is mainly driven by high-energy-consuming industries supporting the digital industry development, while the downstream carbon emission path is mainly driven by the service industry's demand for digital products; (3) From a production perspective, the key sectors for carbon emissions include transportation, warehousing and postal services, leasing and business services, and electricity and heat production and supply industries; from a consumption perspective, the key sectors for carbon emissions include public administration, social security and social organization industries, finance and integrated technology services. These sectors also serve as crucial intermediary hubs in the carbon emission paths of the digital industry chain. The research provides a theoretical basis for the collaborative transformation of digitization and greening in Beijing and the policy formulation of urban climate governance.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"528 ","pages":"Article 146745"},"PeriodicalIF":10.0,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Investigating the influence of digital technology innovation on land ecological security: Empirical evidence from the city clusters in the middle reaches of the Yangtze River","authors":"Yuan Feng, Ying Li, Changfei Nie","doi":"10.1016/j.jclepro.2025.146783","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146783","url":null,"abstract":"The rapid progression of digital technology innovation has increasingly influenced land ecological security in recent years. Utilizing the Pressure-State-Response framework, this study measures land ecological security of the city clusters in the middle reaches of the Yangtze River from 2006 to 2021 and investigates the effect of digital technology innovation on it. The results indicate that digital technology innovation can effectively promote land ecological security, maintaining its validity following the endogenous and robustness tests. Furthermore, mechanism analysis reveals that digital technology innovation promotes land ecological security by facilitating talent agglomeration, economic agglomeration and digital entrepreneurship agglomeration. The moderation mechanism demonstrates that as digital infrastructure becomes more advanced and public environmental attention increases, the impact of digital technology innovation on land ecological security intensifies. Additionally, the heterogeneity findings show that digital technology innovation plays a pivotal role in enhancing land ecological security within the Wuhan city clusters, as well as in cities with high land ecological security level and the large-scale cities. Further analysis reveals the existence of a boundary effect between digital technology innovation and land ecological security. These findings provide valuable theoretical insights and policy implications for the application of digital technology innovation to promote land ecological security.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"12 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Synergy or contradiction: Environmental concerns, digital empowerment and green technology innovation","authors":"Longmin Yu","doi":"10.1016/j.jclepro.2025.146761","DOIUrl":"10.1016/j.jclepro.2025.146761","url":null,"abstract":"<div><div>Green technological innovation requires both top-down policy intervention and bottom-up public participation. This study utilizes textual analysis to identify environmental concerns expressed by governments and the public. It evaluates the respective and joint effects of these concerns on green technological innovation across 236 Chinese cities from 2012 to 2022. The findings indicate that public environmental concerns stimulate green innovation development, while government concerns enhance innovation dynamics but hinder improvements in innovation capacity. Further analysis reveals a negative synergy between public and governmental concerns regarding innovation capacity. Digital technology moderates these relationships: it induces a U-shaped effect on the impact of government concerns and an inverted U-shaped effect on public concerns, transforming their mutual exclusivity into complementarity. Therefore, it is necessary to activate the synergistic effect of government and public environmental attention through top-level design, build a multi-agent collaborative green innovation ecosystem, and rely on moderate digital technology empowerment to overcome synergy barriers, providing systematic support for green innovation.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"528 ","pages":"Article 146761"},"PeriodicalIF":10.0,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}