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ESG-based index tracking with portfolio policy
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-31 DOI: 10.1016/j.jclepro.2025.144880
Davood Pirayesh Neghab, Mohammad Moradi, Mucahit Cevik, Reza Bradrania
We incorporate socially responsible investment goals in the index tracking portfolio problem. We propose a comprehensive decision-making framework to construct an ESG-based portfolio to track the market index while ensuring ESG performance at a specific confidence level. To solve the problem, we develop a hybrid method combining genetic algorithms and chance-constrained optimization. Moreover, we estimate a linear portfolio policy to determine the portfolio weights directly using stock-level characteristics. We provide the empirical application of the proposed method using the constituents of the S&P 500 index and quantify the trade-off between the tracking error and the ESG value of the portfolios. The results indicate that imposing ESG criteria at the highest confidence level increases the annualized mean absolute deviation (MAD) by more than 14.5% compared to non-ESG-based portfolios. However, the significance of this trade-off increases with a smaller portfolio size and a shorter investment horizon. Furthermore, the empirical analysis suggests that the size of the firms is more important than their value and momentum in portfolio rebalancing. The proposed system guides investors in their portfolio choice to set targets that best match their ethical as well as monetary goals.
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引用次数: 0
The state-of-the-art review on the utilization of reclaimed asphalt pavement via hot in-place recycling technology
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-31 DOI: 10.1016/j.jclepro.2025.144887
Xu Xia, Yongli Zhao, Dong Tang
In recent years, the rise in raw material costs and the push towards sustainable development have made the recycling of reclaimed asphalt pavement (RAP) a prominent focus in highway engineering research. Hot in-place recycling (HIR) technology is an asphalt pavement recycling method that processes 100% of RAP through a single process involving heating, milling, adding external materials, hot mixing, paving, and rolling. This technique offers benefits such as reduced carbon emissions, environmental friendliness, stability, durability, and ease of construction. Both domestic and international researchers, as well as relevant enterprises, have extensively studied HIR technology, leading to innovations in equipment and technological advancements and accumulating considerable engineering experience. Additionally, extensive literature reviews have been conducted on rejuvenators, regeneration mechanisms, hot central plant recycling, cold recycling, and warm recycling. However, HIR technology has been only briefly discussed in existing studies. Thus, a comprehensive review of HIR technology is essential. This paper begins by outlining the HIR construction process, equipment, and common technologies, with a particular focus on the promising multi-layer synchronized recycling method. It reviews temperature control methods in HIR, evaluates the advantages and limitations of current heating modes and technologies, and suggests that coupling and multi-stage heating technology can significantly enhance heating efficiency and uniformity. Additionally, the paper introduces general design processes and mix proportion design methods, highlights strategies for optimizing mixture performance and existing shortcomings, and discusses construction quality control methods and performance variation law of HIR asphalt mixtures. Furthermore, it compares and analyzes the economic and environmental benefits. Overall, this paper provides a comprehensive review of research progress in various aspects of HIR, including design methods, construction equipment, implementation procedures, and maintenance effects. It identifies current deficiencies and outlines future research directions, aiming to foster innovation in HIR technology and contribute to achieving strategic goals in energy conservation, emission reduction, and the development of a green circular economy in highway engineering.
近年来,原材料成本的上升和可持续发展的推动,使再生沥青路面(RAP)的回收利用成为公路工程研究的重点。热就地再循环(HIR)技术是一种沥青路面再循环方法,通过加热、铣刨、添加外加材料、热拌、摊铺和碾压等单一工序处理 100% 的 RAP。这种技术具有减少碳排放、环保、稳定、耐久和易于施工等优点。国内外研究人员和相关企业对 HIR 技术进行了广泛研究,在设备创新和技术进步方面取得了进展,积累了大量工程经验。此外,还对再生器、再生机制、热中央装置再生、冷再生和暖再生进行了广泛的文献综述。然而,在现有的研究中,对 HIR 技术的讨论还很有限。因此,对 HIR 技术进行全面回顾是非常必要的。本文首先概述了 HIR 的建造过程、设备和常用技术,并特别关注了前景广阔的多层同步循环方法。它回顾了 HIR 的温度控制方法,评估了当前加热模式和技术的优势和局限性,并提出耦合和多级加热技术可显著提高加热效率和均匀性。此外,论文还介绍了一般的设计流程和混合料配合比设计方法,强调了优化混合料性能的策略和现有缺陷,并讨论了 HIR 沥青混合料的施工质量控制方法和性能变化规律。此外,本文还对经济效益和环境效益进行了比较和分析。总之,本文全面回顾了 HIR 各方面的研究进展,包括设计方法、施工设备、实施程序和养护效果。它指出了目前存在的不足,并概述了未来的研究方向,旨在促进 HIR 技术的创新,为实现公路工程节能减排和发展绿色循环经济的战略目标做出贡献。
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引用次数: 0
Risk assessment of antibiotic resistance genes in rhizosphere soil during tomato growth under bio-control bacterial inoculation
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144911
Jianjie Li, Yuchan Li, Na Zhang, Zongzhuan Shen, Biao Shen, Rong Li, Xuhui Deng, Qirong Shen, Joana Falcao Salles
The rhizosphere is critical for interactions within the plant microbiome and serves as a key environment for the growth of bacteria that produce or resist antimicrobials. This environment facilitates the strengthening of antibiotic resistance genes (ARGs). Although applying antimicrobial-producing microorganisms helps to reduce the incidence of soil-borne diseases, little is known about their impact on ARG dynamics throughout the plant growth period. Rhizosphere soils from organic fertilizer (OF) and organic fertilizer + Bacillus amyloliquefaciens T-5 (OF+T5) from a long-term field trial were chosen to assess the ARG risk under the input of biocontrol agents during all stages of plant growth. Metagenomic sequencing was used to quantify the dynamics of ARGs, mobile genetic elements (MGEs), and microorganisms harboring these genetic elements. A microcosm pot experiment was then conducted in which tomato plants were cultivated with different concentrations of B. amyloliquefaciens (103, 105, 107, and 109 cells mL−1) to verify the results. The metagenomic data indicated that during the early stage of plant growth, the inoculated biocontrol agent, along with other stimulated beneficial microbes, such as Pseudomonas spp. and Streptomyces spp., which contain ARGs, increased the risk of ARG enrichment in the rhizosphere. However, as plant growth progressed and pathogenic bacteria surged, these beneficial microbes suppressed the increase in the abundance of Ralstonia solanacearum rich in ARGs. This, in turn, mitigated the ARG risks associated with the early-stage enrichment of functional microorganisms. This dynamic between beneficial microbes and plant pathogens in the rhizosphere represents a subtle yet crucial process in mitigating ARG risks. In summary, balancing the limited ARG risk posed by beneficial microorganisms with the prevention of the potentially unlimited ARG risks associated with pathogenic bacteria presents a promising approach within the “One Health” framework.
{"title":"Risk assessment of antibiotic resistance genes in rhizosphere soil during tomato growth under bio-control bacterial inoculation","authors":"Jianjie Li, Yuchan Li, Na Zhang, Zongzhuan Shen, Biao Shen, Rong Li, Xuhui Deng, Qirong Shen, Joana Falcao Salles","doi":"10.1016/j.jclepro.2025.144911","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144911","url":null,"abstract":"The rhizosphere is critical for interactions within the plant microbiome and serves as a key environment for the growth of bacteria that produce or resist antimicrobials. This environment facilitates the strengthening of antibiotic resistance genes (ARGs). Although applying antimicrobial-producing microorganisms helps to reduce the incidence of soil-borne diseases, little is known about their impact on ARG dynamics throughout the plant growth period. Rhizosphere soils from organic fertilizer (OF) and organic fertilizer + <em>Bacillus amyloliquefaciens</em> T-5 (OF+T5) from a long-term field trial were chosen to assess the ARG risk under the input of biocontrol agents during all stages of plant growth. Metagenomic sequencing was used to quantify the dynamics of ARGs, mobile genetic elements (MGEs), and microorganisms harboring these genetic elements. A microcosm pot experiment was then conducted in which tomato plants were cultivated with different concentrations of <em>B. amyloliquefaciens</em> (10<sup>3</sup>, 10<sup>5</sup>, 10<sup>7</sup>, and 10<sup>9</sup> cells mL<sup>−1</sup>) to verify the results. The metagenomic data indicated that during the early stage of plant growth, the inoculated biocontrol agent, along with other stimulated beneficial microbes, such as <em>Pseudomonas spp.</em> and <em>Streptomyces spp.</em>, which contain ARGs, increased the risk of ARG enrichment in the rhizosphere. However, as plant growth progressed and pathogenic bacteria surged, these beneficial microbes suppressed the increase in the abundance of <em>Ralstonia solanacearum</em> rich in ARGs. This, in turn, mitigated the ARG risks associated with the early-stage enrichment of functional microorganisms. This dynamic between beneficial microbes and plant pathogens in the rhizosphere represents a subtle yet crucial process in mitigating ARG risks. In summary, balancing the limited ARG risk posed by beneficial microorganisms with the prevention of the potentially unlimited ARG risks associated with pathogenic bacteria presents a promising approach within the “One Health” framework.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"1 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057086","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}
引用次数: 0
Green Finance and Investment in India: Unveiling Enablers and Barriers for a Sustainable Future
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144908
Sumedha Bhatnagar, Dipti Sharma, Vijay Vir Singh
The green transition of the financial system requires the collaborative and active participation of public and private organisations. Various factors influence the growth of a green finance (GF) and green investments (GI) ecosystem. These factors vary for both developing and developed countries. The present study aims to evaluate barriers and enablers to the growth of GF and GI in India. Enablers and barriers have been identified through a comprehensive literature review and the modified Delphi technique. They are prioritised and ranked by applying Multicriteria decision-making (MCDM) approaches. The analytical hierarchy process (AHP) and the technique for order preference, which is similar to the ideal solution (TOPSIS), are applied to prioritise the 43 sub-barriers and 32 enablers, categorised into six parameters. The robustness of the results is checked through sensitivity analysis. The findings show that financial, legal and regulatory barriers are the most deterring barriers. Technological innovation and the development of clean energy sectors are prominent enablers. Expanding the knowledge base, diversifying financial instruments and promoting transparency in disclosures and reporting can mitigate investors' risk in GI. The findings contribute to the literature and give insight into factors that can significantly impact GF and GI in India. The recommendations contribute to the strategic and inclusive formulation of the policy framework. The present research has implications for financial and capital markets and regulatory bodies, as well as industry and society at large; thus, further studies can draw insights into green growth in emerging economies. The analysis can be further extended by conducting a thorough quantitative analysis of the pivotal actors.
{"title":"Green Finance and Investment in India: Unveiling Enablers and Barriers for a Sustainable Future","authors":"Sumedha Bhatnagar, Dipti Sharma, Vijay Vir Singh","doi":"10.1016/j.jclepro.2025.144908","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144908","url":null,"abstract":"The green transition of the financial system requires the collaborative and active participation of public and private organisations. Various factors influence the growth of a green finance (GF) and green investments (GI) ecosystem. These factors vary for both developing and developed countries. The present study aims to evaluate barriers and enablers to the growth of GF and GI in India. Enablers and barriers have been identified through a comprehensive literature review and the modified Delphi technique. They are prioritised and ranked by applying Multicriteria decision-making (MCDM) approaches. The analytical hierarchy process (AHP) and the technique for order preference, which is similar to the ideal solution (TOPSIS), are applied to prioritise the 43 sub-barriers and 32 enablers, categorised into six parameters. The robustness of the results is checked through sensitivity analysis. The findings show that financial, legal and regulatory barriers are the most deterring barriers. Technological innovation and the development of clean energy sectors are prominent enablers. Expanding the knowledge base, diversifying financial instruments and promoting transparency in disclosures and reporting can mitigate investors' risk in GI. The findings contribute to the literature and give insight into factors that can significantly impact GF and GI in India. The recommendations contribute to the strategic and inclusive formulation of the policy framework. The present research has implications for financial and capital markets and regulatory bodies, as well as industry and society at large; thus, further studies can draw insights into green growth in emerging economies. The analysis can be further extended by conducting a thorough quantitative analysis of the pivotal actors.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"122 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056922","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}
引用次数: 0
Comparative study on the durability of ultra-high toughness cementitious composites and mortar under salt attacks
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144844
Wenrui Wang, Qinghua Li, Guohua Xing, Shilang Xu
The high fly ash replacement (50%∼85% by weight of total cementitious materials) and the use of polyvinyl alcohol fibers have improved the durability of ultra-high toughness cementitious composites (UHTCC) and reduced its life-cycle costs and CO2 emission, which give UHTCC higher sustainability than that of normal concrete. To get a comprehensive understanding of the durability of UHTCC, a comparative study on the salt resistance was conducted between UHTCC and Portland cement mortar. Specimens were exposed to NaCl, MgCl2, Na2SO4, and MgSO4 solutions with 5% anion concentration and high-salinity (35%) seawater, which are the common aggressive substances in actual engineering environments. Physical and mechanical properties of specimens were characterized periodically and microscopic analyses were also conducted. After exposed to MgCl2 solution and seawater, an Mg-containing layer was formed on the surface of specimens, which acted as a barrier to retard external ions from penetrating but significantly impaired the mechanical properties of mortar specimens. Magnesium salts generally showed more serious degradation effects than sodium salts. The addition of PVA fibers could improve the salt resistance of UHTCC, and the salt resistance of UHTCC was greater than that of mortar, which suggests the promising applications of UHTCC to civil infrastructures under aggressive environments to extend the service life of structures.
{"title":"Comparative study on the durability of ultra-high toughness cementitious composites and mortar under salt attacks","authors":"Wenrui Wang, Qinghua Li, Guohua Xing, Shilang Xu","doi":"10.1016/j.jclepro.2025.144844","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144844","url":null,"abstract":"The high fly ash replacement (50%∼85% by weight of total cementitious materials) and the use of polyvinyl alcohol fibers have improved the durability of ultra-high toughness cementitious composites (UHTCC) and reduced its life-cycle costs and CO<sub>2</sub> emission, which give UHTCC higher sustainability than that of normal concrete. To get a comprehensive understanding of the durability of UHTCC, a comparative study on the salt resistance was conducted between UHTCC and Portland cement mortar. Specimens were exposed to NaCl, MgCl<sub>2</sub>, Na<sub>2</sub>SO<sub>4</sub>, and MgSO<sub>4</sub> solutions with 5% anion concentration and high-salinity (35%) seawater, which are the common aggressive substances in actual engineering environments. Physical and mechanical properties of specimens were characterized periodically and microscopic analyses were also conducted. After exposed to MgCl<sub>2</sub> solution and seawater, an Mg-containing layer was formed on the surface of specimens, which acted as a barrier to retard external ions from penetrating but significantly impaired the mechanical properties of mortar specimens. Magnesium salts generally showed more serious degradation effects than sodium salts. The addition of PVA fibers could improve the salt resistance of UHTCC, and the salt resistance of UHTCC was greater than that of mortar, which suggests the promising applications of UHTCC to civil infrastructures under aggressive environments to extend the service life of structures.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"7 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057089","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}
引用次数: 0
State of the Art Review on the Principles of Compatibility and Chemical Compatibilizers for Recycled Plastic-Modified Asphalt Binders
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144895
Abeeb Oyelere, Shenghua Wu
Plastics have become a key material in industrial development in recent decades, primarily due to their low production costs and ease of manufacturing. Despite this, their low biodegradation and ability to absorb harmful toxins make their disposal challenging and unsustainable. Recycling plastic waste as a substitute for expensive polymers in asphalt binder modification offers a potential solution to mitigate environmental impact, reduce costs, and conserve the natural resources typically used in polymer-modified asphalt. Nevertheless, challenges remain, particularly with regard to the compatibility of plastics and asphalt binders. Poor compatibility can lead to issues such as phase separation, reduced rheological properties, and weakened mechanical strength, all of which undermine the performance and durability of the modified asphalt. This review explores the compatibility of polymer-modified asphalt binders, examining key polymer properties affecting compatibility and how compatibility affects morphology, storage stability, and rheological behavior. Also, it highlights key tests to assess compatibility as well as chemical strategies to improve the compatibility of recycled plastics modified asphalt binders.
{"title":"State of the Art Review on the Principles of Compatibility and Chemical Compatibilizers for Recycled Plastic-Modified Asphalt Binders","authors":"Abeeb Oyelere, Shenghua Wu","doi":"10.1016/j.jclepro.2025.144895","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144895","url":null,"abstract":"Plastics have become a key material in industrial development in recent decades, primarily due to their low production costs and ease of manufacturing. Despite this, their low biodegradation and ability to absorb harmful toxins make their disposal challenging and unsustainable. Recycling plastic waste as a substitute for expensive polymers in asphalt binder modification offers a potential solution to mitigate environmental impact, reduce costs, and conserve the natural resources typically used in polymer-modified asphalt. Nevertheless, challenges remain, particularly with regard to the compatibility of plastics and asphalt binders. Poor compatibility can lead to issues such as phase separation, reduced rheological properties, and weakened mechanical strength, all of which undermine the performance and durability of the modified asphalt. This review explores the compatibility of polymer-modified asphalt binders, examining key polymer properties affecting compatibility and how compatibility affects morphology, storage stability, and rheological behavior. Also, it highlights key tests to assess compatibility as well as chemical strategies to improve the compatibility of recycled plastics modified asphalt binders.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"10 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056715","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}
引用次数: 0
Transboundary Cooperation Potential under Climate Change and Hydropower Development in the Dulong-Irrawaddy River Basin: A Perspective on the Water-Energy-Food- Ecosystem Nexus
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144915
Ziyue Xu, Kai Ma, Jiwei Leng, Kaiwen Zhang, Rui Luo, Daming He
Water crises are exacerbated by accelerating climate change and increasing water demand and thus have emerged as critical risks to countries worldwide. This issue is particularly pressing in Asia's transboundary river basins, where inadequate collaborative mechanisms and uncertain future cooperation prospects heighten the risk of these crises occurring. For example, the Dulong-Irrawaddy River Basin (DIRB) is challenged by both climate change and potential large-scale hydropower development, yet lacks a comprehensive, basin-wide study on transboundary water cooperation. This study represents the initial application of an integrated Water-Energy-Food-Ecosystem (WEFE) nexus modeling framework to the DIRB, quantitatively assessing changes in economic benefits (hydropower and irrigation) and ecological responses (Ecological Flow (EF), Sediment Transport (ST), and Navigation (NG)) under future climate scenarios and hydropower development. The results show that the operation of large hydropower reservoirs will substantially increase economic benefits, with a noticeable trend of growth from the near (2030-2049) to the far future (2075-2099), fueled by climate change-induced increases in runoff. Among the three water allocation strategies, the two cooperative scenarios, the Combinatorial Benefit Optimization (CBO) scenario and the Irrigation Benefit Priority (IBP) scenario, offer significant economic advantages over the noncooperative scenario, the Hydropower Benefit Priority (HBP) scenario. Specifically, the annual economic benefits increase by 0.68 and 0.43 billion USD under SSP2-4.5, and by 0.94 and 0.66 billion USD under SSP5-8.5. To balance hydropower and irrigation benefits, the CBO scenario is preferable, as it sacrifices less hydropower than does the IBP scenario. This preference mitigates annual economic losses by approximately 0.56 billion USD under SSP2-4.5 and 0.42 billion USD under SSP5-8.5. Evaluations for various typical years also reveal that the cooperative scenarios generate nearly twice the additional irrigation benefits compared with noncooperative ones, with cooperation proving more advantageous under drier conditions. The ecological response analysis under future water benefit trade-offs indicates that operating upstream cascade reservoirs can increase downstream dry season EF and NG guarantee rates while resulting in limited sediment losses, which remain below 3%. The findings of this study indicate that potential hydropower development in the DIRB can offer substantial basin-wide comprehensive benefits, which are greatly enhanced through cooperative efforts. Additionally, the integrated methodology proposed in this study can be applied to similar challenges in other basins, helping decision-makers identify potential pathways for more cooperative and efficient cross-border water resource management in line with global Sustainable Development Goals.
{"title":"Transboundary Cooperation Potential under Climate Change and Hydropower Development in the Dulong-Irrawaddy River Basin: A Perspective on the Water-Energy-Food- Ecosystem Nexus","authors":"Ziyue Xu, Kai Ma, Jiwei Leng, Kaiwen Zhang, Rui Luo, Daming He","doi":"10.1016/j.jclepro.2025.144915","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144915","url":null,"abstract":"Water crises are exacerbated by accelerating climate change and increasing water demand and thus have emerged as critical risks to countries worldwide. This issue is particularly pressing in Asia's transboundary river basins, where inadequate collaborative mechanisms and uncertain future cooperation prospects heighten the risk of these crises occurring. For example, the Dulong-Irrawaddy River Basin (DIRB) is challenged by both climate change and potential large-scale hydropower development, yet lacks a comprehensive, basin-wide study on transboundary water cooperation. This study represents the initial application of an integrated Water-Energy-Food-Ecosystem (WEFE) nexus modeling framework to the DIRB, quantitatively assessing changes in economic benefits (hydropower and irrigation) and ecological responses (Ecological Flow (EF), Sediment Transport (ST), and Navigation (NG)) under future climate scenarios and hydropower development. The results show that the operation of large hydropower reservoirs will substantially increase economic benefits, with a noticeable trend of growth from the near (2030-2049) to the far future (2075-2099), fueled by climate change-induced increases in runoff. Among the three water allocation strategies, the two cooperative scenarios, the Combinatorial Benefit Optimization (CBO) scenario and the Irrigation Benefit Priority (IBP) scenario, offer significant economic advantages over the noncooperative scenario, the Hydropower Benefit Priority (HBP) scenario. Specifically, the annual economic benefits increase by 0.68 and 0.43 billion USD under SSP2-4.5, and by 0.94 and 0.66 billion USD under SSP5-8.5. To balance hydropower and irrigation benefits, the CBO scenario is preferable, as it sacrifices less hydropower than does the IBP scenario. This preference mitigates annual economic losses by approximately 0.56 billion USD under SSP2-4.5 and 0.42 billion USD under SSP5-8.5. Evaluations for various typical years also reveal that the cooperative scenarios generate nearly twice the additional irrigation benefits compared with noncooperative ones, with cooperation proving more advantageous under drier conditions. The ecological response analysis under future water benefit trade-offs indicates that operating upstream cascade reservoirs can increase downstream dry season EF and NG guarantee rates while resulting in limited sediment losses, which remain below 3%. The findings of this study indicate that potential hydropower development in the DIRB can offer substantial basin-wide comprehensive benefits, which are greatly enhanced through cooperative efforts. Additionally, the integrated methodology proposed in this study can be applied to similar challenges in other basins, helping decision-makers identify potential pathways for more cooperative and efficient cross-border water resource management in line with global Sustainable Development Goals.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"130 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057085","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}
引用次数: 0
The Digital Empowerment Promotes Synergistic Efficiency in Regional Pollution Reduction and Carbon Emission Reduction—Analysis of the Moderating Effects of Market Structure and Government Behavior
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144867
Li Yue, Liang Han
In the era of globalization, tackling challenges in environmental protection and carbon emission control, digital intelligence has become an essential instrument for advancing green development, providing new solutions for pollution reduction and carbon reduction. This paper, using panel data from 258 Chinese cities from 2011 to 2022, investigates how digital intelligence can promote the dual enhancement of pollution and carbon reduction across regions, while also analyzing the effects of market structure and government behavior on this process. The research results show that digital intelligence has made significant contributions to pollution reduction and carbon emissions decrease, particularly in resource-based cities, cities in non-strictly controlled areas, and those facing difficulties in achieving carbon peaking. Furthermore, the study reveals that market segmentation and government competitiveness can amplify the environmental benefits of digital intelligence, while market integration and government environmental focus may impose certain constraints (See Fgure 1 for details). Based on these findings, this paper proposes that policymakers should concentrate on the following areas: enhancing digital intelligence infrastructure, particularly in resource-dependent regions, to promote low-carbon transformation; optimizing market structures through appropriate market segmentation to encourage competition and technological innovation; strengthening government governance and environmental regulatory capacities to ensure the effectiveness of policy implementation; and balancing market integration to prevent environmental regulations from being weakened by market unification.
{"title":"The Digital Empowerment Promotes Synergistic Efficiency in Regional Pollution Reduction and Carbon Emission Reduction—Analysis of the Moderating Effects of Market Structure and Government Behavior","authors":"Li Yue, Liang Han","doi":"10.1016/j.jclepro.2025.144867","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144867","url":null,"abstract":"In the era of globalization, tackling challenges in environmental protection and carbon emission control, digital intelligence has become an essential instrument for advancing green development, providing new solutions for pollution reduction and carbon reduction. This paper, using panel data from 258 Chinese cities from 2011 to 2022, investigates how digital intelligence can promote the dual enhancement of pollution and carbon reduction across regions, while also analyzing the effects of market structure and government behavior on this process. The research results show that digital intelligence has made significant contributions to pollution reduction and carbon emissions decrease, particularly in resource-based cities, cities in non-strictly controlled areas, and those facing difficulties in achieving carbon peaking. Furthermore, the study reveals that market segmentation and government competitiveness can amplify the environmental benefits of digital intelligence, while market integration and government environmental focus may impose certain constraints (See Fgure 1 for details). Based on these findings, this paper proposes that policymakers should concentrate on the following areas: enhancing digital intelligence infrastructure, particularly in resource-dependent regions, to promote low-carbon transformation; optimizing market structures through appropriate market segmentation to encourage competition and technological innovation; strengthening government governance and environmental regulatory capacities to ensure the effectiveness of policy implementation; and balancing market integration to prevent environmental regulations from being weakened by market unification.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"29 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057090","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}
引用次数: 0
Assessing the resilience of carbon sequestration flow network on the Loess Plateau
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144910
Ya Zhang, Jing Li, Boyan Li, Jizhou Bai, Chuhan Wang
The importance of resilience assessment for maintaining long-term stable flow of ecosystem services has been widely recognized. However, there remains a gap in resilience research regarding ecosystem service (ES) flows. We took the Loess Plateau, a typical ecologically fragile area in China, as an example to explore this issue based on complex models and network theory. The results showed that in 2001, the number of carbon sequestration surplus counties on the Loess Plateau far exceeded that of deficit counties, with relatively strong inter-county flow connections. By 2010, the transformation of supply and demand nodes resulted in an increased number of isolated nodes, leading to a decrease in carbon sequestration service (CSS) flow network connection density, as well as a decline in the overall connectivity and agglomeration of the flow network. Meanwhile, the high concentration of flow resources intensified network vulnerability, such that external attacks on a few core counties could trigger the connective collapse of the entire network, rapidly reducing its resilience to zero. In 2020, service flows transitioned from concentration to dispersion, reducing network vulnerability and alleviating the dependence of network resilience on central core counties. Under a deliberate attack strategy, approximately 6.4% more core counties needed to be attacked in 2020 than in 2010 to cause the collapse of flow network, indicating an improvement in network resilience. These findings provide empirical support and valuable insights for ecological restoration and sustainable development on the Loess Plateau.
{"title":"Assessing the resilience of carbon sequestration flow network on the Loess Plateau","authors":"Ya Zhang, Jing Li, Boyan Li, Jizhou Bai, Chuhan Wang","doi":"10.1016/j.jclepro.2025.144910","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144910","url":null,"abstract":"The importance of resilience assessment for maintaining long-term stable flow of ecosystem services has been widely recognized. However, there remains a gap in resilience research regarding ecosystem service (ES) flows. We took the Loess Plateau, a typical ecologically fragile area in China, as an example to explore this issue based on complex models and network theory. The results showed that in 2001, the number of carbon sequestration surplus counties on the Loess Plateau far exceeded that of deficit counties, with relatively strong inter-county flow connections. By 2010, the transformation of supply and demand nodes resulted in an increased number of isolated nodes, leading to a decrease in carbon sequestration service (CSS) flow network connection density, as well as a decline in the overall connectivity and agglomeration of the flow network. Meanwhile, the high concentration of flow resources intensified network vulnerability, such that external attacks on a few core counties could trigger the connective collapse of the entire network, rapidly reducing its resilience to zero. In 2020, service flows transitioned from concentration to dispersion, reducing network vulnerability and alleviating the dependence of network resilience on central core counties. Under a deliberate attack strategy, approximately 6.4% more core counties needed to be attacked in 2020 than in 2010 to cause the collapse of flow network, indicating an improvement in network resilience. These findings provide empirical support and valuable insights for ecological restoration and sustainable development on the Loess Plateau.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"122 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056710","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}
引用次数: 0
Unraveling carbon mineralization patterns and mechanisms in conservation agriculture: A global synthesis and multi-point experiment
IF 11.1 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-01-30 DOI: 10.1016/j.jclepro.2025.144900
Cong He, Jin-Sai Chen, Shou-Wei Han, Wen-Sheng Liu, Wen-Xuan Liu, Olatunde Pelumi Oladele, Yash Pal Dang, Rattan Lal, Xin Zhao, Hai-Lin Zhang
The mineralization of soil organic carbon (SOC) profoundly impacts the efficiency of SOC sequestration, crucial for the long-term stable carbon (C) sequestration in soil. Despite its significance, systematic studies investigating the effects of three pillars of conservation agriculture (CA), i.e., no-till, residue retention (RR), and crop rotation (CR), on the mineralization of SOC remain scarce. To address the gap, we conducted a comprehensive analysis, collating data from 89 experimental sites worldwide and integrating with field experimental data sampled from 10 sites across China. Our study evaluated potentially mineralizable carbon (PMC) using first-order kinetic fitting, and specific PMC (SPMC, PMC/SOC) to elucidate patterns of SOC mineralization under CA and its moderation by climatic, environmental, and soil factors. The results showed a gradual decrease in PMC with the adoption of increasing numbers of CA pillars, with the full implementation reducing PMC by 35.1%. The impact of no-till on PMC and SPMC was not significant, while RR and CR significantly increased and decreased PMC by 21.0% and 27.3%, respectively. Notably, only CR significantly increased SPMC by 15.0%. The findings suggest that under CR, PMC exhibit reduced sensitivity to climatic and environmental changes and emphasizing higher environmental stability of SOC. Soil microbial indicators demonstrated direct and indirect positive regulatory effects on PMC, and SPMC is positively affected by MBC in addition to SOC, both of which indicate the vital role of soil microbes in regulating SOC mineralization. We proposed a conceptual model highlighting nonlinear relationship between stable SOC pool and SOC, emphasizing how the relationship between C sequestration and emission reduction can be optimized under CR. Further research should delve into understanding microbial pathways in SOC mineralization and their role in balancing mineralization and sequestration.
{"title":"Unraveling carbon mineralization patterns and mechanisms in conservation agriculture: A global synthesis and multi-point experiment","authors":"Cong He, Jin-Sai Chen, Shou-Wei Han, Wen-Sheng Liu, Wen-Xuan Liu, Olatunde Pelumi Oladele, Yash Pal Dang, Rattan Lal, Xin Zhao, Hai-Lin Zhang","doi":"10.1016/j.jclepro.2025.144900","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.144900","url":null,"abstract":"The mineralization of soil organic carbon (SOC) profoundly impacts the efficiency of SOC sequestration, crucial for the long-term stable carbon (C) sequestration in soil. Despite its significance, systematic studies investigating the effects of three pillars of conservation agriculture (CA), i.e., no-till, residue retention (RR), and crop rotation (CR), on the mineralization of SOC remain scarce. To address the gap, we conducted a comprehensive analysis, collating data from 89 experimental sites worldwide and integrating with field experimental data sampled from 10 sites across China. Our study evaluated potentially mineralizable carbon (PMC) using first-order kinetic fitting, and specific PMC (SPMC, PMC/SOC) to elucidate patterns of SOC mineralization under CA and its moderation by climatic, environmental, and soil factors. The results showed a gradual decrease in PMC with the adoption of increasing numbers of CA pillars, with the full implementation reducing PMC by 35.1%. The impact of no-till on PMC and SPMC was not significant, while RR and CR significantly increased and decreased PMC by 21.0% and 27.3%, respectively. Notably, only CR significantly increased SPMC by 15.0%. The findings suggest that under CR, PMC exhibit reduced sensitivity to climatic and environmental changes and emphasizing higher environmental stability of SOC. Soil microbial indicators demonstrated direct and indirect positive regulatory effects on PMC, and SPMC is positively affected by MBC in addition to SOC, both of which indicate the vital role of soil microbes in regulating SOC mineralization. We proposed a conceptual model highlighting nonlinear relationship between stable SOC pool and SOC, emphasizing how the relationship between C sequestration and emission reduction can be optimized under CR. Further research should delve into understanding microbial pathways in SOC mineralization and their role in balancing mineralization and sequestration.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"28 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057083","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}
引用次数: 0
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Journal of Cleaner Production
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