Pub Date : 2026-01-24DOI: 10.1016/j.gerr.2025.100166
Yiping Qiu , Chengming Li , Yiqun Zhang , Yuan Feng , Sergei Leonovich , Piqi Zhao , Shoude Wang
{"title":"Corrigendum to “Effect of rich-MgO from low-calcium limestone on the calcination and properties of C4A3$-C2S clinker” [Green energy and Resources 2 (2024) 100099]","authors":"Yiping Qiu , Chengming Li , Yiqun Zhang , Yuan Feng , Sergei Leonovich , Piqi Zhao , Shoude Wang","doi":"10.1016/j.gerr.2025.100166","DOIUrl":"10.1016/j.gerr.2025.100166","url":null,"abstract":"","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100166"},"PeriodicalIF":0.0,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-20DOI: 10.1016/j.gerr.2025.100163
Weilin Zeng , Zeyang Pan , Xujiang Wang , Kai Hong Luo
In present work, the turbulent non-premixed cool flames of dimethyl-ether (DME)/methane mixtures are studied within the framework of flamelet/progress variable modelling and chemical kinetic analyses. The numerical setup is based on the Princeton CARAT burner configuration, and the accuracy of the hpmech-V3.3 chemistry to model turbulent low-temperature combustion is validated against the reference experiments and DNS. The simulation results reveal that turbulent cool flame structures are modified (lifted) by methane addition owing to the decline of cool flame extinction limits. The different flame regions associated with differing thermochemical characteristics for the dual-fuel lifted cool flames are uncovered. The DME/methane consumption trends suggest that methane addition inhibits the DME low-temperature oxidation. Through the kinetic analyses, the mechanisms are identified to be two-fold: methane competes with the DME H-abstraction reaction for OH radicals and the reaction of QOOH <=> O2 + 2CH2O is significantly slowed down with the methane addition. The mechanisms also kinetically explain the finding that the formation of CH2O, CO, CO2 in cool flames decline in response to the increase of methane blending ratios. The correlation between temperature and key intermediate formation is discovered.
{"title":"Flamelet/progress variable modelling of turbulent non-premixed cool flames of dimethyl-ether/methane mixtures","authors":"Weilin Zeng , Zeyang Pan , Xujiang Wang , Kai Hong Luo","doi":"10.1016/j.gerr.2025.100163","DOIUrl":"10.1016/j.gerr.2025.100163","url":null,"abstract":"<div><div>In present work, the turbulent non-premixed cool flames of dimethyl-ether (DME)/methane mixtures are studied within the framework of flamelet/progress variable modelling and chemical kinetic analyses. The numerical setup is based on the Princeton CARAT burner configuration, and the accuracy of the hpmech-V3.3 chemistry to model turbulent low-temperature combustion is validated against the reference experiments and DNS. The simulation results reveal that turbulent cool flame structures are modified (lifted) by methane addition owing to the decline of cool flame extinction limits. The different flame regions associated with differing thermochemical characteristics for the dual-fuel lifted cool flames are uncovered. The DME/methane consumption trends suggest that methane addition inhibits the DME low-temperature oxidation. Through the kinetic analyses, the mechanisms are identified to be two-fold: methane competes with the DME H-abstraction reaction for OH radicals and the reaction of QOOH <=> O<sub>2</sub> + 2CH<sub>2</sub>O is significantly slowed down with the methane addition. The mechanisms also kinetically explain the finding that the formation of CH<sub>2</sub>O, CO, CO<sub>2</sub> in cool flames decline in response to the increase of methane blending ratios. The correlation between temperature and key intermediate formation is discovered.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100163"},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-18DOI: 10.1016/j.gerr.2025.100164
Rui Jovan Yeo , T.H. New , W.L. Chan
A gas stored at high-pressure leaking through a small hole forms a complex series of shock structures as it accelerates and expands to ambient conditions. The near-field region of the jet includes the initial jet expansion, Mach disc formation, and starting vortices, all of which can affect hydrogen mixing with the surrounding air and have an associated combustion risk. Through the use of a modified OpenFOAM solver, simulations of hydrogen stored at 10 and 100 bar leaking into atmospheric conditions through 1.5 mm diameter circular nozzles were performed to determine the transient temperature profile, shock locations, and hydrogen mixing profiles of the hydrogen jet in its initial expansion and propagation stages. From these transient simulations, it was shown that starting vortices form pockets of mixed hydrogen and air that are within hydrogen flammability limits. This new simulation data shows mixed hydrogen pockets can linger in the nozzle near-field region and present a flammability risk that is not easily accounted for when using existing numerical models optimized for far-field flame behavior, showing this new open-source tool can resolve hydrogen mixing behavior in the nozzle near-field region without compromising on shock resolution capabilities.
{"title":"OpenFOAM-based study on near-field formation and mixing of high nozzle pressure ratio hydrogen jets from leakages","authors":"Rui Jovan Yeo , T.H. New , W.L. Chan","doi":"10.1016/j.gerr.2025.100164","DOIUrl":"10.1016/j.gerr.2025.100164","url":null,"abstract":"<div><div>A gas stored at high-pressure leaking through a small hole forms a complex series of shock structures as it accelerates and expands to ambient conditions. The near-field region of the jet includes the initial jet expansion, Mach disc formation, and starting vortices, all of which can affect hydrogen mixing with the surrounding air and have an associated combustion risk. Through the use of a modified OpenFOAM solver, simulations of hydrogen stored at 10 and 100 bar leaking into atmospheric conditions through 1.5 mm diameter circular nozzles were performed to determine the transient temperature profile, shock locations, and hydrogen mixing profiles of the hydrogen jet in its initial expansion and propagation stages. From these transient simulations, it was shown that starting vortices form pockets of mixed hydrogen and air that are within hydrogen flammability limits. This new simulation data shows mixed hydrogen pockets can linger in the nozzle near-field region and present a flammability risk that is not easily accounted for when using existing numerical models optimized for far-field flame behavior, showing this new open-source tool can resolve hydrogen mixing behavior in the nozzle near-field region without compromising on shock resolution capabilities.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100164"},"PeriodicalIF":0.0,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1016/j.gerr.2025.100162
Hongjun Fu , Enhui Ma , Xinyang He , Chunyi Li , Jiahui Zhu , Qi Feng , Xinyi Liao , Wenxin Liu , Xiaodan Huang , Rongtai Yu
Solar-driven interfacial evaporation represents an innovative and highly promising strategy to address global freshwater scarcity and enhance water purification technologies. The distinctive structure of natural mushrooms, comprising a pileus and stipe, offers a feasible pathway for designing efficient and low-cost solar evaporators. In this work, natural mushrooms were employed as solar evaporators to evaluate their performance in evaporating seawater and sewage. Under 3.9 suns illumination, evaporation rates of 4.89, 4.57, and 3.73 kg·m−2·h−1 were achieved for sewage, deionized water, and seawater, respectively. Under natural sunlight conditions (0.5 sun), the mushroom evaporator attained rates of 2.62 and 2.13 kg·m−2·h−1 for sewage and seawater, respectively. The mushroom-based evaporator demonstrates not only exceptional photothermal conversion performance but also remarkable cycling stability and durability.
{"title":"Mushroom-based high-efficiency solar evaporator for water harvesting","authors":"Hongjun Fu , Enhui Ma , Xinyang He , Chunyi Li , Jiahui Zhu , Qi Feng , Xinyi Liao , Wenxin Liu , Xiaodan Huang , Rongtai Yu","doi":"10.1016/j.gerr.2025.100162","DOIUrl":"10.1016/j.gerr.2025.100162","url":null,"abstract":"<div><div>Solar-driven interfacial evaporation represents an innovative and highly promising strategy to address global freshwater scarcity and enhance water purification technologies. The distinctive structure of natural mushrooms, comprising a pileus and stipe, offers a feasible pathway for designing efficient and low-cost solar evaporators. In this work, natural mushrooms were employed as solar evaporators to evaluate their performance in evaporating seawater and sewage. Under 3.9 suns illumination, evaporation rates of 4.89, 4.57, and 3.73 kg·m<sup>−2</sup>·h<sup>−1</sup> were achieved for sewage, deionized water, and seawater, respectively. Under natural sunlight conditions (0.5 sun), the mushroom evaporator attained rates of 2.62 and 2.13 kg·m<sup>−2</sup>·h<sup>−1</sup> for sewage and seawater, respectively. The mushroom-based evaporator demonstrates not only exceptional photothermal conversion performance but also remarkable cycling stability and durability.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100162"},"PeriodicalIF":0.0,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.gerr.2025.100154
Yisong Liu , Linglin Xu , Zhiyuan Zhang , Changzai Ren , Dandan Sun , Yi Bao , Kai Wu
The high carbon emissions associated with the cement industry underscore the urgent need for low-carbon alternative materials. Compared with other alternatives, Reactive Magnesia Cement (RMC) offers the potential to absorb CO2. However, current research on RMC remains fragmented, lacking a systematic overview of its complete processing route. This review summarizes the carbonation mechanism of RMC and provides a comprehensive discussion of evaluation methods for its carbonation degree. In addition, the review provides an in-depth analysis of factors influencing carbonation and strategies to enhance it. Specifically, we categorize the mechanisms and evaluate the effectiveness of various methods, with an emphasis on environmentally friendly production processes to identify the most optimal approaches. Finally, the study highlights the carbon footprint of RMC and discusses the challenges associated with achieving low-carbon RMC production.
{"title":"Review of carbon capture and conversion with reactive magnesia cement materials","authors":"Yisong Liu , Linglin Xu , Zhiyuan Zhang , Changzai Ren , Dandan Sun , Yi Bao , Kai Wu","doi":"10.1016/j.gerr.2025.100154","DOIUrl":"10.1016/j.gerr.2025.100154","url":null,"abstract":"<div><div>The high carbon emissions associated with the cement industry underscore the urgent need for low-carbon alternative materials. Compared with other alternatives, Reactive Magnesia Cement (RMC) offers the potential to absorb CO<sub>2</sub>. However, current research on RMC remains fragmented, lacking a systematic overview of its complete processing route. This review summarizes the carbonation mechanism of RMC and provides a comprehensive discussion of evaluation methods for its carbonation degree. In addition, the review provides an in-depth analysis of factors influencing carbonation and strategies to enhance it. Specifically, we categorize the mechanisms and evaluate the effectiveness of various methods, with an emphasis on environmentally friendly production processes to identify the most optimal approaches. Finally, the study highlights the carbon footprint of RMC and discusses the challenges associated with achieving low-carbon RMC production.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"3 4","pages":"Article 100154"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vanadium redox flow batteries (VRFBs) have held significant promise in large-scale energy storage applications due to their advantages, including long cycle life, high safety, and the ability to independently design power and capacity. However, the relatively low power density has remained a critical bottleneck for further development. As a key material in VRFB power units, enhancing the performance of graphite felt electrodes has represented an effective strategy for achieving high-power battery technology. To improve the activity of graphite felt electrodes, this study has employed an experimental verification approach to investigate battery performance parameters under various activation temperatures and durations, thereby identifying the optimal activation conditions. In contrast to prior studies that exclusively targeted 400°C without systematically optimizing activation duration, this study has systematically evaluated five activation temperatures and four activation durations to clarify the synergistic influence of these parameters on VRFB performance. Specifically, experiments have been conducted at room temperature using activation temperatures of 300, 350, 400, 450, and 500°C, as well as activation durations of 24, 11, 7, and 3 h. The results have indicated that an activation temperature of 400°C yielded notable improvements in charge/discharge performance, internal resistance, efficiency, and capacity retention. Notably, energy efficiency has increased by 5.06%, 5.94%, 3.67%, and 4.72% under these conditions. This study has identified the optimal activation conditions of “400°C for 7 h” and has provided the corresponding performance data, which can help reduce research costs associated with electrode activation in future investigations. This study has provided valuable insights into electrode activation and has offered guidance for enhancing VRFB performance.
{"title":"Experimental verification of electrode activation for improved performance in vanadium redox flow batteries","authors":"Zhi Zhuge , Zebo Huang , Osamah Ibrahim Khalaf , Longxing Wu","doi":"10.1016/j.gerr.2025.100155","DOIUrl":"10.1016/j.gerr.2025.100155","url":null,"abstract":"<div><div>Vanadium redox flow batteries (VRFBs) have held significant promise in large-scale energy storage applications due to their advantages, including long cycle life, high safety, and the ability to independently design power and capacity. However, the relatively low power density has remained a critical bottleneck for further development. As a key material in VRFB power units, enhancing the performance of graphite felt electrodes has represented an effective strategy for achieving high-power battery technology. To improve the activity of graphite felt electrodes, this study has employed an experimental verification approach to investigate battery performance parameters under various activation temperatures and durations, thereby identifying the optimal activation conditions. In contrast to prior studies that exclusively targeted 400°C without systematically optimizing activation duration, this study has systematically evaluated five activation temperatures and four activation durations to clarify the synergistic influence of these parameters on VRFB performance. Specifically, experiments have been conducted at room temperature using activation temperatures of 300, 350, 400, 450, and 500°C, as well as activation durations of 24, 11, 7, and 3 h. The results have indicated that an activation temperature of 400°C yielded notable improvements in charge/discharge performance, internal resistance, efficiency, and capacity retention. Notably, energy efficiency has increased by 5.06%, 5.94%, 3.67%, and 4.72% under these conditions. This study has identified the optimal activation conditions of “400°C for 7 h” and has provided the corresponding performance data, which can help reduce research costs associated with electrode activation in future investigations. This study has provided valuable insights into electrode activation and has offered guidance for enhancing VRFB performance.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"3 4","pages":"Article 100155"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bioethanol plays a crucial role in the global transition to sustainability, serving as a renewable fuel especially in the transportation sector, and a versatile renewable chemical precursor in industries, mitigating greenhouse gas (GHG) emissions. Although bioethanol is renewable, its production is still carbon-intensive, with most emissions arising from fermentation and cogeneration. Despite significant advancements, existing works on bioethanol have largely focused on individual decarbonization elements (e.g., CCU, CCS in bioenergy, and process intensification in ethanol production). Few studies link these strategies together to show how they could collectively move bioethanol toward carbon-negative production. This review aims to fill that gap by systematically analyzing the evolution of bioethanol production processes, identifying key sources of CO2 emissions, and critically evaluating state-of-the-art strategies—including process optimization, CCU, and CCS—within a unified framework. Overall, this review underscores that integrating process optimization, CCU, and CCS can transform bioethanol production from a low-carbon fuel into a negative-emission technology, reinforcing its pivotal role in global decarbonization efforts.
{"title":"A review on comprehensive strategies for decarbonizing bioethanol production process","authors":"Treerat Vacharanukrauh , Apinan Soottitantawat , Nuttha Thongchul , Worapon Kiatkittipong , Nopphon Weeranoppanant , Suttichai Assabumrungrat","doi":"10.1016/j.gerr.2025.100153","DOIUrl":"10.1016/j.gerr.2025.100153","url":null,"abstract":"<div><div>Bioethanol plays a crucial role in the global transition to sustainability, serving as a renewable fuel especially in the transportation sector, and a versatile renewable chemical precursor in industries, mitigating greenhouse gas (GHG) emissions. Although bioethanol is renewable, its production is still carbon-intensive, with most emissions arising from fermentation and cogeneration. Despite significant advancements, existing works on bioethanol have largely focused on individual decarbonization elements (e.g., CCU, CCS in bioenergy, and process intensification in ethanol production). Few studies link these strategies together to show how they could collectively move bioethanol toward carbon-negative production. This review aims to fill that gap by systematically analyzing the evolution of bioethanol production processes, identifying key sources of CO<sub>2</sub> emissions, and critically evaluating state-of-the-art strategies—including process optimization, CCU, and CCS—within a unified framework. Overall, this review underscores that integrating process optimization, CCU, and CCS can transform bioethanol production from a low-carbon fuel into a negative-emission technology, reinforcing its pivotal role in global decarbonization efforts.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"3 4","pages":"Article 100153"},"PeriodicalIF":0.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-04DOI: 10.1016/j.gerr.2025.100151
Qi Nie , Jianlu Zhu , Liang Hao , Yuxing Li
For deep-sea oil exploitation far away from land, there is inevitably the generation of oilfield-associated gas. It is a new method for recover oilfield associated gas by using a high-gravity device to generate hydrate. In this paper, the methane hydrate formation process of different packings in the high-gravity machine was studied. By comparing the structural morphology of varying packings and the characteristics of the hydrate in the high-gravity machine, a new type of layered packing is designed and manufactured. The volumetric storage capacity, normalized gas consumption rates and methane absorption time of foam metal packing, metal mesh packing, 3D printing spiral packing, and new layered packing were investigated experimentally. The results show that the new layered packing has significant advantages. The maximum volumetric storage capacity, normalized gas consumption rate, and the shortest methane absorption time are 239265 mol/(m3·min), and 74 min, respectively. It exhibits an excellent methane hydrate formation effect and the advantage of small equipment size. It is very suitable for the recovery of oilfield-associated gas produced in the process of offshore oil exploitation.
{"title":"Methane hydrate formation using high gravity equipment: A new method for recovery of associated gas in offshore oilfields","authors":"Qi Nie , Jianlu Zhu , Liang Hao , Yuxing Li","doi":"10.1016/j.gerr.2025.100151","DOIUrl":"10.1016/j.gerr.2025.100151","url":null,"abstract":"<div><div>For deep-sea oil exploitation far away from land, there is inevitably the generation of oilfield-associated gas. It is a new method for recover oilfield associated gas by using a high-gravity device to generate hydrate. In this paper, the methane hydrate formation process of different packings in the high-gravity machine was studied. By comparing the structural morphology of varying packings and the characteristics of the hydrate in the high-gravity machine, a new type of layered packing is designed and manufactured. The volumetric storage capacity, normalized gas consumption rates and methane absorption time of foam metal packing, metal mesh packing, 3D printing spiral packing, and new layered packing were investigated experimentally. The results show that the new layered packing has significant advantages. The maximum volumetric storage capacity, normalized gas consumption rate, and the shortest methane absorption time are 239265 mol/(m<sup>3</sup>·min), and 74 min, respectively. It exhibits an excellent methane hydrate formation effect and the advantage of small equipment size. It is very suitable for the recovery of oilfield-associated gas produced in the process of offshore oil exploitation.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"3 4","pages":"Article 100151"},"PeriodicalIF":0.0,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-02DOI: 10.1016/j.gerr.2025.100152
Jingxiao Zhang , Lei Gao , Xin Liu , Martin Skitmore
Transit-Oriented Development (TOD) has emerged as a critical strategy for advancing the green transformation of China's low-carbon cities. Conducting carbon footprint research on TOD from a whole life cycle perspective holds profound significance for achieving the Dual Carbon Goals. This study constructs five carbon footprint calculation models based on life cycle assessment theory. Setting four residential travel scenario assumptions thoroughly examines the whole life cycle carbon emissions of China SH TOD project and the carbon reduction achieved through transportation during the operation phase. Results indicate that total carbon emissions in the study area amount to 2.9902 million tons. Considering solely the carbon reduction effect from shifts in resident travel modes under the TOD model, the total carbon reduction reaches 203600 tons, with a carbon reduction effectiveness evaluation index of 6.81%. Compared to the continuous increase in carbon footprint observed after the operation of traditional residential and commercial projects, the carbon reduction effect is notably significant. Furthermore, the study identified key high-emission stages within the lifecycle through model-based calculations and proposed targeted mitigation strategies. These findings provide recommendations for energy conservation, carbon reduction, and sustainable development in TOD projects.
{"title":"Accounting the life cycle carbon footprint for TOD project: An example from the China SH TOD project","authors":"Jingxiao Zhang , Lei Gao , Xin Liu , Martin Skitmore","doi":"10.1016/j.gerr.2025.100152","DOIUrl":"10.1016/j.gerr.2025.100152","url":null,"abstract":"<div><div>Transit-Oriented Development (TOD) has emerged as a critical strategy for advancing the green transformation of China's low-carbon cities. Conducting carbon footprint research on TOD from a whole life cycle perspective holds profound significance for achieving the Dual Carbon Goals. This study constructs five carbon footprint calculation models based on life cycle assessment theory. Setting four residential travel scenario assumptions thoroughly examines the whole life cycle carbon emissions of China SH TOD project and the carbon reduction achieved through transportation during the operation phase. Results indicate that total carbon emissions in the study area amount to 2.9902 million tons. Considering solely the carbon reduction effect from shifts in resident travel modes under the TOD model, the total carbon reduction reaches 203600 tons, with a carbon reduction effectiveness evaluation index of 6.81%. Compared to the continuous increase in carbon footprint observed after the operation of traditional residential and commercial projects, the carbon reduction effect is notably significant. Furthermore, the study identified key high-emission stages within the lifecycle through model-based calculations and proposed targeted mitigation strategies. These findings provide recommendations for energy conservation, carbon reduction, and sustainable development in TOD projects.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"3 4","pages":"Article 100152"},"PeriodicalIF":0.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/j.gerr.2025.100143
Yichao Chen , Wanyao Li , Haofei Li , Yuhong Qin , Shugang Guo , Bin Fang , Yujia Du , Jin Yuan , Leteng Lin
Establishing the quantitative relationships between heavy metals and mineral phases in coal gangue is essential for its comprehensive landfill and refined utilization. In this study, the Guandi coal gangue was subjected to a stepwise dissociation method using seven concentration gradients (0.1, 1.0, 4.0, 6.0, 8.0, 10.0, 12.0 mol/L) of aqua regia and hydrofluoric acid. Combined with the Rietveld refinement method, inverse matrix calculations of residual fractions of mineral phases and dissociation degrees of heavy metals after dissociation, the quantitative relationships between Pb, As, Zn, Cr and the mineral phases were determined. The results show that kaolinite, quartz, pyrite, and the amorphous phase are the primary host phases for Pb, As, Zn, and Cr, with their contents in crystalline phases ranging from 71.36% to 87.68%. Validation via the standard addition method demonstrates that the relative standard deviation of the stepwise dissociation for Pb, As, Zn, and Cr is ≤7.23%, with spike recovery rates ranging from 85.43% to 112.85%, indicating favorable test results. Sequential chemical leaching demonstrates that heavy metals are mainly distributed in stable aluminosilicate-bound state and carbonate or oxide-bound state. The toxicity characteristic leaching procedure test indicated that Cr exhibited high toxicity and thus required long-term monitoring. The results of this study provide important theoretical guidance for the comprehensive landfilling and resource utilization of Guandi coal gangue, and the established analytical method can be extended to studies on quantitative relationships between heavy metals and mineral phases in other tailings.
{"title":"Insight into the occurrence relationships between Pb, As, Zn and Cr with minerals phases in the coal gangue: A novel quantitative dissociation method","authors":"Yichao Chen , Wanyao Li , Haofei Li , Yuhong Qin , Shugang Guo , Bin Fang , Yujia Du , Jin Yuan , Leteng Lin","doi":"10.1016/j.gerr.2025.100143","DOIUrl":"10.1016/j.gerr.2025.100143","url":null,"abstract":"<div><div>Establishing the quantitative relationships between heavy metals and mineral phases in coal gangue is essential for its comprehensive landfill and refined utilization. In this study, the Guandi coal gangue was subjected to a stepwise dissociation method using seven concentration gradients (0.1, 1.0, 4.0, 6.0, 8.0, 10.0, 12.0 mol/L) of aqua regia and hydrofluoric acid. Combined with the Rietveld refinement method, inverse matrix calculations of residual fractions of mineral phases and dissociation degrees of heavy metals after dissociation, the quantitative relationships between Pb, As, Zn, Cr and the mineral phases were determined. The results show that kaolinite, quartz, pyrite, and the amorphous phase are the primary host phases for Pb, As, Zn, and Cr, with their contents in crystalline phases ranging from 71.36% to 87.68%. Validation via the standard addition method demonstrates that the relative standard deviation of the stepwise dissociation for Pb, As, Zn, and Cr is ≤7.23%, with spike recovery rates ranging from 85.43% to 112.85%, indicating favorable test results. Sequential chemical leaching demonstrates that heavy metals are mainly distributed in stable aluminosilicate-bound state and carbonate or oxide-bound state. The toxicity characteristic leaching procedure test indicated that Cr exhibited high toxicity and thus required long-term monitoring. The results of this study provide important theoretical guidance for the comprehensive landfilling and resource utilization of Guandi coal gangue, and the established analytical method can be extended to studies on quantitative relationships between heavy metals and mineral phases in other tailings.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"3 3","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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