Zhinan Hou , Zhenglong Cao , Chongyang Zhao , Yuncheng Zhang , Dantong Zhang , Shuqi Dai , Qiao Ma , Qingsong Wang , Feifei Liu , Jian Zuo , Xueliang Yuan
{"title":"Spatial difference, dynamic evolution and influencing factors of carbon emission efficiency in China at the provincial level","authors":"Zhinan Hou , Zhenglong Cao , Chongyang Zhao , Yuncheng Zhang , Dantong Zhang , Shuqi Dai , Qiao Ma , Qingsong Wang , Feifei Liu , Jian Zuo , Xueliang Yuan","doi":"10.1016/j.gerr.2026.100170","DOIUrl":"10.1016/j.gerr.2026.100170","url":null,"abstract":"<div><div>As the world's largest carbon emitter, China is actively pursuing its goals of carbon peaking and carbon neutrality. This has necessitated the analysis of the spatial and temporal differences in interprovincial carbon emission efficiency (CEE). This study develops a multimethod analytical framework to systematically investigate the static differences, dynamic evolution, and influencing factors of CEE across 30 provincial-level administrative regions in China from 2007 to 2021. Results demonstrate the national average CEE fluctuating between 0.878 and 1.093, with the central region exhibiting the highest mean efficiency at 0.9627 from a static perspective. Considerable disparities are observed between the eastern and western regions. Moreover, high-CEE regions are observed to suppress CEE growth in neighboring low-CEE areas. The Gini coefficient decomposition method reveals inter-regional differences as the main source of the overall inequality, accounting for 67.31% on average. Urbanization and industrial upgrading are observed to be the drivers of CEE, with population density being the strongest suppressor. GDP per capita and technological development are observed to contribute to regional CEE disparities via considerable negative spatial spillover effects. These findings provide a valuable basis for coordinating regional carbon emission reductions in China.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100170"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147399802","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}
Xingjian Guo , Hongliang Luo , Long Liu , Keyan Liu , Juncong Ge , Keiya Nishida
{"title":"Towards green marine engines: A review of methanol fueled internal combustion engine","authors":"Xingjian Guo , Hongliang Luo , Long Liu , Keyan Liu , Juncong Ge , Keiya Nishida","doi":"10.1016/j.gerr.2026.100168","DOIUrl":"10.1016/j.gerr.2026.100168","url":null,"abstract":"<div><div>With the global marine industry actively exploring sustainability and making efforts to move towards decarbonization goals, identifying suitable alternative fuels has become a crucial task. Among the numerous types of clean fuels, methanol has become a transitional fuel for the maritime sector to achieve decarbonization goals due to its superior combustion properties. Additionally, methanol has a wide range of sources. It can be produced from coal, natural gas and biomass and its production capacity is distributed all over the world. Asia (with China as the main country), the Middle East and North America are the major bases. In recent years, the production capacity of renewable methanol has been gradually increasing. Renewable methanol is of great significance for achieving carbon neutrality. This review conducts a detailed collation of different types of methanol engines, comparatively analyzes their performance under various operating conditions, and draws corresponding conclusions. The key characteristic parameters encompass ignition delay, knocking, brake thermal efficiency, indicated thermal efficiency, in-cylinder pressure, heat release rate, nitrogen oxides, soot, and carbon monoxide. Based on the examined results, compared with diesel engines, methanol engines exhibit superior performance in terms of emissions. However, methanol fueled engine reduces the thermal efficiency in some cases, which needs more new technologies to improve the efficiency.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100168"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147399800","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}
Hongjun Fu , Enhui Ma , Xinyang He , Chunyi Li , Jiahui Zhu , Qi Feng , Xinyi Liao , Wenxin Liu , Xiaodan Huang , Rongtai Yu
{"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":"2026-03-01","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}
{"title":"Biochar for heavy metal remediation in aquatic and terrestrial environments: Properties, influencing factors, and mechanisms","authors":"Yaoyao Cao , Jian Chen , Hui Zhang , Hongjie Sheng , Kang Lv , Jinjin Cheng , Xiaolong Chen , Dongfei Chen , Xiangyang Yu","doi":"10.1016/j.gerr.2026.100167","DOIUrl":"10.1016/j.gerr.2026.100167","url":null,"abstract":"<div><div>With the rapid development of industrialization, heavy metal pollution in water and soil has become increasingly serious. Biochar has attracted extensive attention for its application in heavy metal remediation, which mainly depends on its developed porous structure, large specific surface area, abundant functional groups and minerals. This review outlines the status of heavy metal pollution and summarize the key physicochemical characteristics of biochar. Subsequently, a detailed analysis was conducted on the critical influencing factors, encompassing biochar physicochemical properties, environmental parameters, and heavy metal attributes. The core section comprehensively examines the primary remediation mechanisms, such as physical adsorption, ion exchange, precipitation, and complexation, highlighting how their relative importance shifts with biochar type and environmental context. Furthermore, remediation performance is not governed by a single mechanism but by the synergistic interplay of biochar's evolving surface chemistry, solution conditions, and metal speciation. Additionally, differences in dominant mechanisms and long-term stability are critically compared between aquatic and soil systems. Finally, we identify current knowledge gaps—particularly concerning short-term field performance, long-term aging effects, and sustainability under real-world conditions—and propose targeted future research directions to advance the practical, scalable, and safe application of biochar in heavy metal remediation.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100167"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147399803","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}
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":"2026-03-01","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}
Shanliang Ma , Xiaoming Liu , Zengqi Zhang , Yang Shao , Yinming Sun , Siyi Li , Weijie Du , Lilei Zhu , Junyong Wang
{"title":"Synergistic utilization of bauxite residue (red mud) and multiple solid wastes for low carbon precast concrete materials: Mechanical performance, mechanism and sustainability assessment","authors":"Shanliang Ma , Xiaoming Liu , Zengqi Zhang , Yang Shao , Yinming Sun , Siyi Li , Weijie Du , Lilei Zhu , Junyong Wang","doi":"10.1016/j.gerr.2026.100172","DOIUrl":"10.1016/j.gerr.2026.100172","url":null,"abstract":"<div><div>This study investigates the performance and mechanism of bauxite residue (red mud) and multiple solid wastes as active cement replacements in precast concrete. The effects of mixing ratio, water-to-binder ratio, and steam-curing temperature on mechanical properties and microstructural evolution were systematically evaluated. Results showed that incorporating 10%–20% red mud significantly accelerates early hydration under 45–60°C steam curing, enabling demoulding strength above 15 MPa within 8 h. Microstructural characterization reveals that the enhancement originates from the alkali–thermal synergistic mechanism: alkali released from red mud promote dissolution of fly ash glass phases and formation of C–(A)–S–H gels, which interweave with AFt to generate a dense microstructure. A suitable steam curing temperature will further enhance this synergistic effect. This synergistic hydration not only improves early mechanical performance but also supports stable long-term strength development. Sustainability assessment further indicated that the optimized mix design reduces carbon emissions by 46.1% and lowers material cost by 40.8% compared with the pure cement system. Overall, this study clarifies the alkali-thermal synergistic hydration mechanism in solid-waste-based precast concrete and demonstrates an effective pathway for large-scale synergistic utilization of industrial solid wastes such as red mud.</div></div>","PeriodicalId":100597,"journal":{"name":"Green Energy and Resources","volume":"4 1","pages":"Article 100172"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147539196","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}
Jingxiao Zhang , Lei Gao , Xin Liu , Martin Skitmore
{"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":"2025-12-01","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}
Yisong Liu , Linglin Xu , Zhiyuan Zhang , Changzai Ren , Dandan Sun , Yi Bao , Kai Wu
{"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}
{"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}
{"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":"2025-12-01","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}