Pub Date : 2024-11-19DOI: 10.1016/j.jclepro.2024.144261
Qian Wang, Songzi Zhang, Shuming Ren
The problem of low innovation efficiency in developing countries has gained increasing attention, although there is little empirical evidence to examine this issue, especially from a haze pollution perspective. To fill this critical gap, this paper employs a series of empirical methods to investigate the impact of haze pollution on innovation efficiency and takes a panel dataset covering 30 provincial-level regions in China over 2010∼2018 as a case study. Results show that: (1) An increase in haze pollution has an inhibitory effect on China’s provincial innovation efficiency, whether for the overall, R&D, and commercialization efficiency. (2) Such a negative effect is exacerbated in provinces with low levels of urbanization and financial development, presenting a preference for poor territories. (3) Regarding spatial spillover effects, innovation efficiency in a given province is negatively correlated with haze pollution from neighboring provinces. (4) Regarding mediating factors, haze pollution reduces human capital and subsequently can inhibit innovation efficiency, i.e., the “human capital loss effect”. (5) Regarding moderating factors, rather than a “cost following effect”, government attention mitigates the inhibiting effect of haze pollution on innovation efficiency through an “innovation compensation effect”. In general, policymakers should seek a win-win situation between innovation activities and environmental protection.
{"title":"Does Haze Pollution Inhibit Innovation Efficiency in China? The Mediating Role of Human Capital and the Moderating Role of Government Attention","authors":"Qian Wang, Songzi Zhang, Shuming Ren","doi":"10.1016/j.jclepro.2024.144261","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144261","url":null,"abstract":"The problem of low innovation efficiency in developing countries has gained increasing attention, although there is little empirical evidence to examine this issue, especially from a haze pollution perspective. To fill this critical gap, this paper employs a series of empirical methods to investigate the impact of haze pollution on innovation efficiency and takes a panel dataset covering 30 provincial-level regions in China over 2010∼2018 as a case study. Results show that: (1) An increase in haze pollution has an inhibitory effect on China’s provincial innovation efficiency, whether for the overall, R&D, and commercialization efficiency. (2) Such a negative effect is exacerbated in provinces with low levels of urbanization and financial development, presenting a preference for poor territories. (3) Regarding spatial spillover effects, innovation efficiency in a given province is negatively correlated with haze pollution from neighboring provinces. (4) Regarding mediating factors, haze pollution reduces human capital and subsequently can inhibit innovation efficiency, i.e., the “human capital loss effect”. (5) Regarding moderating factors, rather than a “cost following effect”, government attention mitigates the inhibiting effect of haze pollution on innovation efficiency through an “innovation compensation effect”. In general, policymakers should seek a win-win situation between innovation activities and environmental protection.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"228 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670879","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}
In the face of the mass production and consumption of chloroquine (CLQ), the presence of CLQ has posed a significant threat to the water environment and living organisms due to its bio-accumulative and persistent nature. In this work, a heterogeneous electro-Fenton system using a pyrite-modified carbon felt as the cathode (EF-FeS2-CF) was constructed to remove CLQ. EF-FeS2-CF was found to achieve 92.4±0.1% removal of 5 mg/L CLQ after 30 min at 20 mA and exhibited an outstanding catalytic performance for CLQ removal in wide ranges of operating conditions, excellent recyclability with low iron leaching (> 90% 30-min CLQ removal efficiency for all five cyclic experiments which led to only an accumulative Fe loss of < 0.3%) and remarkable application potential in different aqueous environments without any pH adjustment. Both O2•- and •OH were found to greatly contribute to CLQ degradation while the latter played a major role (> 50% CLQ removal). To describe CLQ degradation towards complete mineralization in EF-FeS2-CF, three CLQ degradation paths were proposed based on the main degradation intermediates identified with generally lower ecotoxicities. Such an EF-FeS2-CF system therefore presents promising application potential to treat CLQ-laden waters.
{"title":"Efficient degradation of chloroquine via pyrite-modified electro-Fenton yielding •OH and O2•-","authors":"Yuehua Zhang, Yinghui Lin, Yuanji Shi, Linyan Yang, Bing-Jie Ni, Xueming Chen","doi":"10.1016/j.jclepro.2024.144256","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144256","url":null,"abstract":"In the face of the mass production and consumption of chloroquine (CLQ), the presence of CLQ has posed a significant threat to the water environment and living organisms due to its bio-accumulative and persistent nature. In this work, a heterogeneous electro-Fenton system using a pyrite-modified carbon felt as the cathode (EF-FeS<sub>2</sub>-CF) was constructed to remove CLQ. EF-FeS<sub>2</sub>-CF was found to achieve 92.4±0.1% removal of 5 mg/L CLQ after 30 min at 20 mA and exhibited an outstanding catalytic performance for CLQ removal in wide ranges of operating conditions, excellent recyclability with low iron leaching (> 90% 30-min CLQ removal efficiency for all five cyclic experiments which led to only an accumulative Fe loss of < 0.3%) and remarkable application potential in different aqueous environments without any pH adjustment. Both O<sub>2</sub><sup>•-</sup> and <sup>•</sup>OH were found to greatly contribute to CLQ degradation while the latter played a major role (> 50% CLQ removal). To describe CLQ degradation towards complete mineralization in EF-FeS<sub>2</sub>-CF, three CLQ degradation paths were proposed based on the main degradation intermediates identified with generally lower ecotoxicities. Such an EF-FeS<sub>2</sub>-CF system therefore presents promising application potential to treat CLQ-laden waters.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"18 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670882","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}
Pub Date : 2024-11-19DOI: 10.1016/j.jclepro.2024.144242
Mohammad Elmi, Enhe Zhang, Anwar Jahid, Julian Wang
Energy management in greenhouses is crucial as they demand high energy consumption to keep a desirable environment for products. In this study, a novel greenhouse covering coating is introduced based on photothermal plasmonic nanoparticles to reduce energy consumption in greenhouses. Antimony tin oxide nanoparticles were used as plasmonic nanoparticles and were deposited on polyethylene greenhouse coverings. Thermal and optical properties of the Antimony Tin Oxide-coated covering were characterized, and a comprehensive seasonal greenhouse energy analysis was performed to investigate the energy performance of the developed greenhouse covering. The photosynthetically active radiation (PAR) transmittance of the developed covering is 0.746, and the PAR-to-Solar-Transmittance (PST) value increased about 75% by the new covering. Based on the results, developed greenhouse covering with photothermal plasmonic nanoparticles drops greenhouse heating load by 70% and reduces total greenhouse energy consumption up to 49% in very cold climates. Antimony Tin Oxide nanocoating itself increases greenhouse energy saving by 11.4% in comparison with uncoated-double-layer polyethylene covering. Greenhouse energy savings in this study were achieved without any compromise in photosynthetically active radiation (PAR) and crop growth. A greenhouse covering utilization guideline is provided for each climate zone based on the results of this study to optimize the energy use in the greenhouse. This study opens a new window to innovative material applications in greenhouses to make greenhouses more sustainable and energy-efficient.
{"title":"Operational Energy Savings in Greenhouses by Retrofitting Covering Plastics with Photothermal Antimony Tin Oxide Nanocoating","authors":"Mohammad Elmi, Enhe Zhang, Anwar Jahid, Julian Wang","doi":"10.1016/j.jclepro.2024.144242","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144242","url":null,"abstract":"Energy management in greenhouses is crucial as they demand high energy consumption to keep a desirable environment for products. In this study, a novel greenhouse covering coating is introduced based on photothermal plasmonic nanoparticles to reduce energy consumption in greenhouses. Antimony tin oxide nanoparticles were used as plasmonic nanoparticles and were deposited on polyethylene greenhouse coverings. Thermal and optical properties of the Antimony Tin Oxide-coated covering were characterized, and a comprehensive seasonal greenhouse energy analysis was performed to investigate the energy performance of the developed greenhouse covering. The photosynthetically active radiation (PAR) transmittance of the developed covering is 0.746, and the PAR-to-Solar-Transmittance (PST) value increased about 75% by the new covering. Based on the results, developed greenhouse covering with photothermal plasmonic nanoparticles drops greenhouse heating load by 70% and reduces total greenhouse energy consumption up to 49% in very cold climates. Antimony Tin Oxide nanocoating itself increases greenhouse energy saving by 11.4% in comparison with uncoated-double-layer polyethylene covering. Greenhouse energy savings in this study were achieved without any compromise in photosynthetically active radiation (PAR) and crop growth. A greenhouse covering utilization guideline is provided for each climate zone based on the results of this study to optimize the energy use in the greenhouse. This study opens a new window to innovative material applications in greenhouses to make greenhouses more sustainable and energy-efficient.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"11 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670841","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}
Pub Date : 2024-11-18DOI: 10.1016/j.jclepro.2024.144249
Jiabo Cheng, Yuan Gao, Jie Liu, Yuting Zhang, Mengfei Tian, Mengying Zhang, Yaru Zhang, Chunjian Zhao, Chunying Li
Refining lignocellulose into fermentable monosaccharides remains a challenging endeavor. In this study, we employed a novel deep eutectic solvent (DES) composed of 1-tetradecyl-3-carboxymethylimidazolium bromide (C14CIMBr) and lactic acid (LA) for the pretreatment of Moringa oleifera Lam. husk (M. oleifera husk), aiming to enhance lignocellulose fractionation. The optimal conditions identified were 165°C, 43.9 minutes, and a molar ratio of C14CIMBr to LA at 1:4.8, resulting in the removal of 93.8% of lignin and 96.8% of hemicellulose. Following enzymatic hydrolysis of the pretreated M. oleifera husk, yields of glucose and xylose reached 94.3% and 86.1%, respectively, representing significant increases by factors of 7.0-fold and 10.3-fold compared to untreated M. oleifera husk. Molecular simulations indicated that the novel DES effectively disrupts the original internal hydrogen bonding network while reconstructing new DES-lignocellulosic hydrogen bonds, it also demonstrates excellent solubilization capabilities for lignin cleavage products. Finally, the yield of regenerated lignin reached 81.3%, exhibiting notable bactericidal activity under blue light irradiation.
{"title":"Facilitating lignocellulose fractionation of Moringa oleifera Lam. husk by pretreatment with a novel 1-tetradecyl-3-carboxymethylimidazolium bromide-based deep eutectic solvent","authors":"Jiabo Cheng, Yuan Gao, Jie Liu, Yuting Zhang, Mengfei Tian, Mengying Zhang, Yaru Zhang, Chunjian Zhao, Chunying Li","doi":"10.1016/j.jclepro.2024.144249","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144249","url":null,"abstract":"Refining lignocellulose into fermentable monosaccharides remains a challenging endeavor. In this study, we employed a novel deep eutectic solvent (DES) composed of 1-tetradecyl-3-carboxymethylimidazolium bromide (C<sub>14</sub>CIMBr) and lactic acid (LA) for the pretreatment of <em>Moringa oleifera</em> Lam. husk <em>(M. oleifera</em> husk), aiming to enhance lignocellulose fractionation. The optimal conditions identified were 165°C, 43.9 minutes, and a molar ratio of C<sub>14</sub>CIMBr to LA at 1:4.8, resulting in the removal of 93.8% of lignin and 96.8% of hemicellulose. Following enzymatic hydrolysis of the pretreated <em>M. oleifera</em> husk, yields of glucose and xylose reached 94.3% and 86.1%, respectively, representing significant increases by factors of 7.0-fold and 10.3-fold compared to untreated <em>M. oleifera</em> husk. Molecular simulations indicated that the novel DES effectively disrupts the original internal hydrogen bonding network while reconstructing new DES-lignocellulosic hydrogen bonds, it also demonstrates excellent solubilization capabilities for lignin cleavage products. Finally, the yield of regenerated lignin reached 81.3%, exhibiting notable bactericidal activity under blue light irradiation.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"168 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665234","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}
Pub Date : 2024-11-18DOI: 10.1016/j.jclepro.2024.144254
, Sarada Prasad Sarmah, Nikesh Nayak
This study examines consumer intentions toward scrapping End-of-Life vehicles (ELVs) to understand how vehicle scrappage policies might alleviate environmental deterioration caused by emissions from outdated vehicles. The research objective is to assess the factors influencing consumer decisions regarding vehicle scrappage, using a model grounded in the Theory of Planned Behavior (TPB). Data was collected from 403 valid responses and analyzed using exploratory factor analysis, confirmatory factor analysis, and structural equation modeling.The findings reveal that the original TPB model accounts for 58.3% of the variance in consumer intentions to scrap vehicles. However, incorporating sociodemographic variables into the model increases the explained variance to 80.6%, with perceived behavioral control as the most influential factor, followed by consumer attitudes. We found that subjective norms do not influence consumers' intentions to participate in scrappage programs. Younger consumers were more likely to support vehicle scrappage, while environmental concerns alone did not foster a positive attitude toward scrappage.In conclusion, while consumer intentions to scrap vehicles are primarily influenced by control and attitude, targeted interventions are needed to enhance policy adoption. Key managerial implications include: promoting acceptance through tailored advertisements, offering differentiated subsidies, engaging younger audiences through awareness campaigns, and redefining promotional strategies to encourage ELV scrappage effectively.
{"title":"What affects consumer’s participation in vehicle scrappage programmes? An empirical study on scrapping intentions","authors":", Sarada Prasad Sarmah, Nikesh Nayak","doi":"10.1016/j.jclepro.2024.144254","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144254","url":null,"abstract":"This study examines consumer intentions toward scrapping End-of-Life vehicles (ELVs) to understand how vehicle scrappage policies might alleviate environmental deterioration caused by emissions from outdated vehicles. The research objective is to assess the factors influencing consumer decisions regarding vehicle scrappage, using a model grounded in the Theory of Planned Behavior (TPB). Data was collected from 403 valid responses and analyzed using exploratory factor analysis, confirmatory factor analysis, and structural equation modeling.The findings reveal that the original TPB model accounts for 58.3% of the variance in consumer intentions to scrap vehicles. However, incorporating sociodemographic variables into the model increases the explained variance to 80.6%, with perceived behavioral control as the most influential factor, followed by consumer attitudes. We found that subjective norms do not influence consumers' intentions to participate in scrappage programs. Younger consumers were more likely to support vehicle scrappage, while environmental concerns alone did not foster a positive attitude toward scrappage.In conclusion, while consumer intentions to scrap vehicles are primarily influenced by control and attitude, targeted interventions are needed to enhance policy adoption. Key managerial implications include: promoting acceptance through tailored advertisements, offering differentiated subsidies, engaging younger audiences through awareness campaigns, and redefining promotional strategies to encourage ELV scrappage effectively.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"10 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665231","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}
Pub Date : 2024-11-17DOI: 10.1016/j.jclepro.2024.144252
Ailong Fan, Xuelong Fan, Mingyang Zhang, Liu Yang, Yuqi Xiong, Xiao Lang, Chenxing Sheng, Yapeng He
Analysing operational conditions of ships presents a novel approach to assessing emission levels, motivated by the inadequacy of traditional static weighting factors, such as ISO 8178-E3 cycle, to capture the dynamic and complex operating characteristics of ships at sea. This study introduces a data-driven method to construct and validate ship typical operational conditions. The method encompasses identifying ship motion states, extracting features, compressing time series data based on these features, and performing cluster analysis. It has been applied to process over 12.6 million data points, demonstrating its applicability to a large dataset. The results indicate that by using actual measurement data and the proposed methodology, three typical operational conditions for ships were successfully established. There are significant differences in the feature parameters among these conditions, highlighting the distinct characteristics of each operational state. The validity of the constructed typical operational conditions was confirmed through a validation process, which involved analysing the differences in feature parameters and comparing the probability distributions of speed and acceleration to the overall dataset. Additionally, energy consumption and emission levels calculated using the typical conditions were validated through comparison with real-world data from upstream and downstream voyages. This study providing a novel tool for assessing emissions in the maritime industry.
由于传统的静态加权因子（如 ISO 8178-E3 周期）不足以捕捉船舶在海上动态和复杂的运行特征，因此对船舶运行条件进行分析是评估排放水平的一种新方法。本研究介绍了一种数据驱动方法，用于构建和验证船舶典型运行条件。该方法包括识别船舶运动状态、提取特征、根据这些特征压缩时间序列数据并进行聚类分析。该方法已用于处理超过 1260 万个数据点，证明了其对大型数据集的适用性。结果表明，通过使用实际测量数据和建议的方法，成功建立了三种典型的船舶运行条件。这些工况的特征参数存在明显差异，凸显了每种运行状态的不同特点。构建的典型运行状态的有效性通过验证过程得到了确认，验证过程包括分析特征参数的差异，并将速度和加速度的概率分布与整个数据集进行比较。此外，通过与上游和下游航程的实际数据进行比较，还验证了使用典型工况计算出的能耗和排放水平。这项研究为评估海运业的排放提供了一种新工具。
{"title":"Data-driven ship typical operational conditions: a benchmark tool for assessing ship emissions","authors":"Ailong Fan, Xuelong Fan, Mingyang Zhang, Liu Yang, Yuqi Xiong, Xiao Lang, Chenxing Sheng, Yapeng He","doi":"10.1016/j.jclepro.2024.144252","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144252","url":null,"abstract":"Analysing operational conditions of ships presents a novel approach to assessing emission levels, motivated by the inadequacy of traditional static weighting factors, such as ISO 8178-E3 cycle, to capture the dynamic and complex operating characteristics of ships at sea. This study introduces a data-driven method to construct and validate ship typical operational conditions. The method encompasses identifying ship motion states, extracting features, compressing time series data based on these features, and performing cluster analysis. It has been applied to process over 12.6 million data points, demonstrating its applicability to a large dataset. The results indicate that by using actual measurement data and the proposed methodology, three typical operational conditions for ships were successfully established. There are significant differences in the feature parameters among these conditions, highlighting the distinct characteristics of each operational state. The validity of the constructed typical operational conditions was confirmed through a validation process, which involved analysing the differences in feature parameters and comparing the probability distributions of speed and acceleration to the overall dataset. Additionally, energy consumption and emission levels calculated using the typical conditions were validated through comparison with real-world data from upstream and downstream voyages. This study providing a novel tool for assessing emissions in the maritime industry.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"76 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645888","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}
Pub Date : 2024-11-17DOI: 10.1016/j.jclepro.2024.144240
J. Douhard, B. Van Pottelsberghe de la Potterie
The housing sector is a major contributor to greenhouse gas emissions and a large body of literature has focused on measuring the environmental impact of houses, using the Life Cycle Assessment (LCA) methodology. This literature reaches the conclusion that alternative construction materials should be used to reduce the environmental impact of buildings. While such research provides essential knowledge on the carbon footprint of the housing sector, few studies take into account the economic side of the issue. This paper addresses this gap by calculating the Life Cycle Cost (LCC) of houses and matching the results with the LCA stages. The methodology is developed for two reference houses in Belgium. Considering all elements and materials used in the construction process, this approach allows a comparison of each house’s elements based on the required investment to abate their carbon footprint. The most striking results are that (1) the operational stage (i.e., the use of houses) accounts for about 65% of the total carbon impact of a house; (2) a 1€ investment in sustainable materials induces a drop of 1 to 1.3 kgCO2eq; (3) this effect is heterogeneous across materials, with the highest returns obtained for external walls (-6 KgCO2eq) and windows (-3 to -6 kgCO2eq) and the lowest returns obtained for ground floor (-0.3 kgCO2eq).
{"title":"The cost of sustainability in the construction sector – the case of family houses in Belgium","authors":"J. Douhard, B. Van Pottelsberghe de la Potterie","doi":"10.1016/j.jclepro.2024.144240","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144240","url":null,"abstract":"The housing sector is a major contributor to greenhouse gas emissions and a large body of literature has focused on measuring the environmental impact of houses, using the Life Cycle Assessment (LCA) methodology. This literature reaches the conclusion that alternative construction materials should be used to reduce the environmental impact of buildings. While such research provides essential knowledge on the carbon footprint of the housing sector, few studies take into account the economic side of the issue. This paper addresses this gap by calculating the Life Cycle Cost (LCC) of houses and matching the results with the LCA stages. The methodology is developed for two reference houses in Belgium. Considering all elements and materials used in the construction process, this approach allows a comparison of each house’s elements based on the required investment to abate their carbon footprint. The most striking results are that <span><span>(1)</span></span> the operational stage (i.e., the use of houses) accounts for about 65% of the total carbon impact of a house; (2) a 1€ investment in sustainable materials induces a drop of 1 to 1.3 kgCO<sub>2</sub>eq; (3) this effect is heterogeneous across materials, with the highest returns obtained for external walls (-6 KgCO<sub>2</sub>eq) and windows (-3 to -6 kgCO<sub>2</sub>eq) and the lowest returns obtained for ground floor (-0.3 kgCO<sub>2</sub>eq).","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"13 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665281","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}
Pub Date : 2024-11-17DOI: 10.1016/j.jclepro.2024.144237
Alexa Ray R. Fernando, Gizelle P. Tajan
With less than a decade left to achieve the SDGs, developing human capacity and promoting transformative learning is crucial to encourage as many people as possible to become agents of change toward achieving these goals. The literature suggests that Participatory Research (PR)—a host of methods, designs, and collaborative frameworks—has the potential to facilitate inclusive, participatory, and bottom-up approaches to knowledge co-generation and transformative learning in various communities. Using a systematic review approach, this study explored the use of PR in ESD in the recent global literature on education. PR’s efficacy as a participatory tool for ESD among collegiate and adult learners was analyzed. PR’s use and effectiveness in ESD to various stakeholders were also examined. The reviewed studies emphasized the potential of PR in promoting inclusive and participatory approaches to transformative learning and knowledge co-generation among many stakeholders. It highlights the need for academic institutions to adopt participatory and collaborative research methods to enhance their contributions towards achieving the SDGs through ESD. Furthermore, the study investigated how ESD through PR enables individuals to become active social agents and decision-makers in the quest for transformative change and sustainable development. Implications to curriculum and pedagogy enhancement and future directions for using PR in ESD were also presented.
{"title":"Education for Sustainable Development (ESD) through Participatory Research (PR): A systematic review","authors":"Alexa Ray R. Fernando, Gizelle P. Tajan","doi":"10.1016/j.jclepro.2024.144237","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144237","url":null,"abstract":"With less than a decade left to achieve the SDGs, developing human capacity and promoting transformative learning is crucial to encourage as many people as possible to become agents of change toward achieving these goals. The literature suggests that Participatory Research (PR)—a host of methods, designs, and collaborative frameworks—has the potential to facilitate inclusive, participatory, and bottom-up approaches to knowledge co-generation and transformative learning in various communities. Using a systematic review approach, this study explored the use of PR in ESD in the recent global literature on education. PR’s efficacy as a participatory tool for ESD among collegiate and adult learners was analyzed. PR’s use and effectiveness in ESD to various stakeholders were also examined. The reviewed studies emphasized the potential of PR in promoting inclusive and participatory approaches to transformative learning and knowledge co-generation among many stakeholders. It highlights the need for academic institutions to adopt participatory and collaborative research methods to enhance their contributions towards achieving the SDGs through ESD. Furthermore, the study investigated how ESD through PR enables individuals to become active social agents and decision-makers in the quest for transformative change and sustainable development. Implications to curriculum and pedagogy enhancement and future directions for using PR in ESD were also presented.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"76 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665285","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}
In this research, surfactant supplementation was investigated as a novel strategy for alleviation of membrane fouling in waste activated sludge (WAS) membrane filtration process. The effect of WAS pre-treatment with different surfactants on membrane performance were investigated in terms of flux variation, membrane rejection and fouling mechanisms. A generalization form of blocking law was developed to determine membrane fouling mechanism. According to the results, cationic surfactant below critical micelle concentration (CMC) values improved membrane performance, while anionic and non-ionic surfactant showed a negative impact at all dosages. It was observed that WAS pretreatment with 300 mg/L Cetyltrimethylammonium bromide (CTAB) could increase the water flux from 195 to 611 L/m2/h (LMH) and decrease the rejection rate from 93% to 85%, respectively. Although CTAB addition increased the total extracellular polymeric substances (EPSs) amount from 56.16 to 119.6 mg/L which was due to the surfactant solubilization property, the total resistance decreased from 0.33×1010 to 0.11×1010 m-1. This was attributed to the flock formation induced by CTAB through charge neutralization and bridging mechanism. Modeling simulation of the results indicated that CTAB addition transformed fouling mechanism from cake to intermediate-blocking model. The environmental risk assessment revealed that only 0.3 mg/L surfactant penetrated in permeate which was low ecological risk (risk quotients (RQ) < 0.5) to the aquatic environment. Our finding suggested CTAB treatment at low dosage (0.1 g/L) as a promising and efficient approach for fouling mitigation and improving membrane process for wastewater treatment.
{"title":"Performance of surfactant supplementation on alleviating membrane fouling in treatment of waste activated sludge: Experimental and modeling analyses","authors":"Mohsen Taghavijeloudar, Bahman Nazari, Mahdokht Safaei","doi":"10.1016/j.jclepro.2024.144248","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144248","url":null,"abstract":"In this research, surfactant supplementation was investigated as a novel strategy for alleviation of membrane fouling in waste activated sludge (WAS) membrane filtration process. The effect of WAS pre-treatment with different surfactants on membrane performance were investigated in terms of flux variation, membrane rejection and fouling mechanisms. A generalization form of blocking law was developed to determine membrane fouling mechanism. According to the results, cationic surfactant below critical micelle concentration (CMC) values improved membrane performance, while anionic and non-ionic surfactant showed a negative impact at all dosages. It was observed that WAS pretreatment with 300 mg/L Cetyltrimethylammonium bromide (CTAB) could increase the water flux from 195 to 611 L/m<sup>2</sup>/h (LMH) and decrease the rejection rate from 93% to 85%, respectively. Although CTAB addition increased the total extracellular polymeric substances (EPSs) amount from 56.16 to 119.6 mg/L which was due to the surfactant solubilization property, the total resistance decreased from 0.33×10<sup>10</sup> to 0.11×10<sup>10</sup> m<sup>-1</sup>. This was attributed to the flock formation induced by CTAB through charge neutralization and bridging mechanism. Modeling simulation of the results indicated that CTAB addition transformed fouling mechanism from cake to intermediate-blocking model. The environmental risk assessment revealed that only 0.3 mg/L surfactant penetrated in permeate which was low ecological risk (risk quotients (RQ) < 0.5) to the aquatic environment. Our finding suggested CTAB treatment at low dosage (0.1 g/L) as a promising and efficient approach for fouling mitigation and improving membrane process for wastewater treatment.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"50 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665235","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}
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