Resources Conservation and Recycling最新文献

英文中文

Sustainable aviation fuel pathways: Emissions, costs and uncertainty

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-14 DOI: 10.1016/j.resconrec.2025.108124

Fan Yang , Yuan Yao

Previous life cycle assessment (LCA) and techno-economic analysis (TEA) show significant variations in greenhouse gas (GHG) emissions and costs of sustainable aviation fuel (SAF). This study conducts a meta-analysis to examine uncertainty sources and their impacts on GHG and cost performances of various SAF pathways, using data harmonized for the U.S. context. Pathways include hydroprocessed esters and fatty acids (HEFA), Fischer–Tropsch (FT), bioenergy combined with carbon capture and storage (BECCS), alcohol-to-jet process (ATJ), pyrolysis, and power-to-liquid (PtL) with direct air capture (DAC). Harmonization reduced uncertainties for all SAF pathways except PtL-DAC, where the H₂ source is the main uncertainty. FT-BECCS, HEFA-UCO and PtL-DAC pathways show negative GHG emissions (−9.8 to −122.4 g CO_2eq/MJ), while pyrolysis and HEFA show lower costs (0.4–0.7 $/L) than fossil jet fuel (0.75 $/L). Background process data significantly influence GHG variability across all the pathways and mainly contribute to cost variability in HEFA (except HEFA-Tallow) and FT pathways, whereas foreground process data have larger or comparable impacts on cost variations in ATJ and PtL-DAC pathways. Eco-efficiency analysis reveals notable trade-offs among SAF pathways, with some HEFA pathways offering potential co-benefits.

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引用次数: 0

Process evaluation for the recovery of rare earth from bastnaesite using ferric sulfate bio acid

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-10 DOI: 10.1016/j.resconrec.2024.108115

Wei Liu , Jing Liu , Emmanuel Yaw Owusu-Fordjour , Xinbo Yang

The ferric sulfate bio acid (BA) produced from the bio-oxidation of pyrite in coal waste has been found to be a potential lixiviant to recover metals such as rare earth elements (REEs). Herein, a novel process consisting of oxidation roasting-BA leaching-reductive solvent extraction (SX) was proposed to recover REEs from a bastnaesite concentrate. Parametric leaching tests were conducted to evaluate the leaching performance of the BA. Subsequently, SX after ascorbic acid (ASA) reduction and selective precipitation were tested separately to purify the BA leachate. Results show that, similar to 0.2 M H₂SO₄, the BA can effectively recover 90 % of the major REEs from the roasted bastnaesite under optimal conditions. Compared to selective precipitation, SX after ASA reduction was more effective in separating REEs from Fe and other contaminants. The proposed process offers a new path to recover REEs and manage coal waste in a sustainable way.

引用次数: 0

live (a) little: GHG emissions from residential building materials for all 400 counties and cities of Germany until 2050

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-10 DOI: 10.1016/j.resconrec.2024.108117

Jakob Napiontek , Tomer Fishman , Peter-Paul Pichler , John Heintz , Helga Weisz

Germany is trying to solve the housing crisis in many of its cities with new construction. At the same time it is trying to meet its greenhouse gas emissions commitments under the Paris Agreement. This study examines how measures to tackle the housing crisis affect the climate crisis by looking at whether material emissions from the construction sector are in line with Germany’s decarbonization targets. We project material demand and associated emissions from 2024 to 2050 using dynamic material flow analysis of a novel high-resolution building stock model based on synthetic population microdata. The model incorporates technological improvements in building design and material efficiency, finding that these fall short of carbon neutrality targets in 2045 and beyond. A reduction in per capita floor area is required to meet the targets. The high spatial resolution of this study allows the identification of reduction hotspots within Germany’s 400 cities and counties, emphasizing the need for location-specific policy for national goals.

{"title":"live (a) little: GHG emissions from residential building materials for all 400 counties and cities of Germany until 2050","authors":"Jakob Napiontek , Tomer Fishman , Peter-Paul Pichler , John Heintz , Helga Weisz","doi":"10.1016/j.resconrec.2024.108117","DOIUrl":"10.1016/j.resconrec.2024.108117","url":null,"abstract":"<div><div>Germany is trying to solve the housing crisis in many of its cities with new construction. At the same time it is trying to meet its greenhouse gas emissions commitments under the Paris Agreement. This study examines how measures to tackle the housing crisis affect the climate crisis by looking at whether material emissions from the construction sector are in line with Germany’s decarbonization targets. We project material demand and associated emissions from 2024 to 2050 using dynamic material flow analysis of a novel high-resolution building stock model based on synthetic population microdata. The model incorporates technological improvements in building design and material efficiency, finding that these fall short of carbon neutrality targets in 2045 and beyond. A reduction in per capita floor area is required to meet the targets. The high spatial resolution of this study allows the identification of reduction hotspots within Germany’s 400 cities and counties, emphasizing the need for location-specific policy for national goals.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"215 ","pages":"Article 108117"},"PeriodicalIF":11.2,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uncovering the future environmental burdens of medical waste disposal in China and mitigation pathways

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-08 DOI: 10.1016/j.resconrec.2024.108116

Yunchang Ding , Qiuxia Zou , Zeguo Yang , Sha Liang , Huijie Hou , Wenbo Yu , Yufei Yang , Huabo Duan , Jiakuan Yang

The rapid expansion of healthcare facilities plays a critical role in achieving health-related United Nations Sustainable Development Goal 3. However, managing the increasing volume of medical waste (MW) presents a major challenge for nations worldwide. This study conducts a comparative life cycle assessment to evaluate the environmental impacts and costs of various MW disposal pathways within the context of China. Particular focus is placed on carbon emission intensity, alongside national-level estimations and projections of total emissions. The results reveal that sterilization combined with waste-to-energy (WtE) technology has the lowest environmental impact, averaging 568 (±71) kg CO₂ eq per tonne of MW. In contrast, the landfill and WtE combination yields the highest economic benefit, with profits reaching $155 per tonne when accounting for local government subsidies. Nationally, MW disposal-related carbon emissions in China are projected to peak at approximately 2.50 (±0.13) million tonnes CO₂ eq by 2036. However, with effective management and significant mitigation efforts, these emissions could decrease by up to 78 % compared to the business-as-usual scenario by 2050.

{"title":"Uncovering the future environmental burdens of medical waste disposal in China and mitigation pathways","authors":"Yunchang Ding , Qiuxia Zou , Zeguo Yang , Sha Liang , Huijie Hou , Wenbo Yu , Yufei Yang , Huabo Duan , Jiakuan Yang","doi":"10.1016/j.resconrec.2024.108116","DOIUrl":"10.1016/j.resconrec.2024.108116","url":null,"abstract":"<div><div>The rapid expansion of healthcare facilities plays a critical role in achieving health-related United Nations Sustainable Development Goal 3. However, managing the increasing volume of medical waste (MW) presents a major challenge for nations worldwide. This study conducts a comparative life cycle assessment to evaluate the environmental impacts and costs of various MW disposal pathways within the context of China. Particular focus is placed on carbon emission intensity, alongside national-level estimations and projections of total emissions. The results reveal that sterilization combined with waste-to-energy (WtE) technology has the lowest environmental impact, averaging 568 (±71) kg CO<sub>2</sub> eq per tonne of MW. In contrast, the landfill and WtE combination yields the highest economic benefit, with profits reaching $155 per tonne when accounting for local government subsidies. Nationally, MW disposal-related carbon emissions in China are projected to peak at approximately 2.50 (±0.13) million tonnes CO<sub>2</sub> eq by 2036. However, with effective management and significant mitigation efforts, these emissions could decrease by up to 78 % compared to the business-as-usual scenario by 2050.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"215 ","pages":"Article 108116"},"PeriodicalIF":11.2,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated BIM-IoT platform for carbon emission assessment and tracking in prefabricated building materialization

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-08 DOI: 10.1016/j.resconrec.2025.108122

Xiaojuan Li , Ming Jiang , Chengxin Lin , Rixin Chen , Meng Weng , C.Y. Jim

Prefabricated building (PB) can effectively promote the low-carbon transformation of the construction industry. It is crucial to account for and analyze carbon emission sources and patterns during PB project materialization and develop an effective assessment and tracking platform. This study leverages Dynamo parametric modeling and coding to develop a scalable BIM system integrating carbon emission data with traceability. Combined with IoT technology, the platform is designed for accurate assessment and real-time tracking of carbon emissions during PB project materialization. Its effectiveness is evaluated, and optimization approaches are proposed. Evaluation results show that the platform improves real-time carbon emission tracking accuracy by approximately 30 % compared to traditional systems, achieving overall carbon reductions of 30−50 % during materialization, with potential reductions up to 60 %. The findings support the low-carbon transformation of the construction industry, offering a new framework and practical approach for carbon control, thus fostering the development of sustainable policies and practices.

{"title":"Integrated BIM-IoT platform for carbon emission assessment and tracking in prefabricated building materialization","authors":"Xiaojuan Li , Ming Jiang , Chengxin Lin , Rixin Chen , Meng Weng , C.Y. Jim","doi":"10.1016/j.resconrec.2025.108122","DOIUrl":"10.1016/j.resconrec.2025.108122","url":null,"abstract":"<div><div>Prefabricated building (PB) can effectively promote the low-carbon transformation of the construction industry. It is crucial to account for and analyze carbon emission sources and patterns during PB project materialization and develop an effective assessment and tracking platform. This study leverages Dynamo parametric modeling and coding to develop a scalable BIM system integrating carbon emission data with traceability. Combined with IoT technology, the platform is designed for accurate assessment and real-time tracking of carbon emissions during PB project materialization. Its effectiveness is evaluated, and optimization approaches are proposed. Evaluation results show that the platform improves real-time carbon emission tracking accuracy by approximately 30 % compared to traditional systems, achieving overall carbon reductions of 30−50 % during materialization, with potential reductions up to 60 %. The findings support the low-carbon transformation of the construction industry, offering a new framework and practical approach for carbon control, thus fostering the development of sustainable policies and practices.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"215 ","pages":"Article 108122"},"PeriodicalIF":11.2,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review of the suitability and performance of phosphogypsum as a material for road base and subbase construction

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-06 DOI: 10.1016/j.resconrec.2024.108120

Malik A. DeWindt , Kate D. Weiksnar , Steven J. Laux , Christopher C. Ferraro , Timothy G. Townsend

Phosphogypsum (PG) use as a road base aggregate is gaining global interest as an alternative to resource-intensive stacking. Various methodologies, including utilizing PG alone, stabilizing with binders, or integrating with aggregates have been explored. This paper discusses these efforts, providing critical analysis and recommendations for PG use in road construction. Studies indicate that PG alone does not perform as an ideal road base material due to its uniform gradation, high solubility, low pH, and low bearing strengths (8–48 %) compared to traditional materials (80 %-200 %). Stabilization with cementitious materials like portland cement, fly ash, and lime can improve strengths and mitigate issues like shrinkage or swelling. Mixes with high PG content (>50 %) require additional aggregates, as cement content is typically limited to below 10 %, and several successful blends have been identified. Another approach involves incorporating common granular base materials which optimizes gradation and enhances bearing ratios to meet design specifications. Key parameters affecting material strengths include cement content, compaction, water content, and material pH. The opportunities and challenges encountered at pilot-scale studies are dated, and more research is required regarding the field behavior of modern techniques. Given evolving considerations for recyclability, expanding research on PG-amended road construction presents clear opportunities.

{"title":"A review of the suitability and performance of phosphogypsum as a material for road base and subbase construction","authors":"Malik A. DeWindt , Kate D. Weiksnar , Steven J. Laux , Christopher C. Ferraro , Timothy G. Townsend","doi":"10.1016/j.resconrec.2024.108120","DOIUrl":"10.1016/j.resconrec.2024.108120","url":null,"abstract":"<div><div>Phosphogypsum (PG) use as a road base aggregate is gaining global interest as an alternative to resource-intensive stacking. Various methodologies, including utilizing PG alone, stabilizing with binders, or integrating with aggregates have been explored. This paper discusses these efforts, providing critical analysis and recommendations for PG use in road construction. Studies indicate that PG alone does not perform as an ideal road base material due to its uniform gradation, high solubility, low pH, and low bearing strengths (8–48 %) compared to traditional materials (80 %-200 %). Stabilization with cementitious materials like portland cement, fly ash, and lime can improve strengths and mitigate issues like shrinkage or swelling. Mixes with high PG content (>50 %) require additional aggregates, as cement content is typically limited to below 10 %, and several successful blends have been identified. Another approach involves incorporating common granular base materials which optimizes gradation and enhances bearing ratios to meet design specifications. Key parameters affecting material strengths include cement content, compaction, water content, and material pH. The opportunities and challenges encountered at pilot-scale studies are dated, and more research is required regarding the field behavior of modern techniques. Given evolving considerations for recyclability, expanding research on PG-amended road construction presents clear opportunities.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"215 ","pages":"Article 108120"},"PeriodicalIF":11.2,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recycling of lignin-based biocomposites: Improving sustainability and enhancing material strength

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-06 DOI: 10.1016/j.resconrec.2024.108104

Barney H. Miao , Daniel Woo , Darius Javan , Edward J. Garboczi , Robert J. Headrick , Andrew C. Lesh , Zhiye Li , David J. Loftus , Michael D. Lepech

Biopolymer-bound soil composites (BSC) are a novel class of cement-free building materials using biopolymer binders, many of which are sourced from the waste streams of major industries. This study investigates the recyclability of one particular BSC that uses kraft lignin as the biopolymer. Re-manufacturing of BSC was accomplished by mechanical disruption of the virgin material, followed by re-introduction of solvent, remixing, and remolding. The compressive strength of recycled lignin-based BSC was higher than that of BSC made with virgin ingredients. To understand the microstructure of lignin-based BSC, a series of X-ray micro-CT images of the test articles were obtained. Images produced by the micro-CT method reveal differences in the microstructure of the re-manufactured specimens indicating an enhancement of the association between lignin and aggregate particles. This study demonstrates the feasibility of recycling BSC and provides insight into the importance of biopolymer-aggregate association in determining the mechanical properties of BSC.

{"title":"Recycling of lignin-based biocomposites: Improving sustainability and enhancing material strength","authors":"Barney H. Miao , Daniel Woo , Darius Javan , Edward J. Garboczi , Robert J. Headrick , Andrew C. Lesh , Zhiye Li , David J. Loftus , Michael D. Lepech","doi":"10.1016/j.resconrec.2024.108104","DOIUrl":"10.1016/j.resconrec.2024.108104","url":null,"abstract":"<div><div>Biopolymer-bound soil composites (BSC) are a novel class of cement-free building materials using biopolymer binders, many of which are sourced from the waste streams of major industries. This study investigates the recyclability of one particular BSC that uses kraft lignin as the biopolymer. Re-manufacturing of BSC was accomplished by mechanical disruption of the virgin material, followed by re-introduction of solvent, remixing, and remolding. The compressive strength of recycled lignin-based BSC was higher than that of BSC made with virgin ingredients. To understand the microstructure of lignin-based BSC, a series of X-ray micro-CT images of the test articles were obtained. Images produced by the micro-CT method reveal differences in the microstructure of the re-manufactured specimens indicating an enhancement of the association between lignin and aggregate particles. This study demonstrates the feasibility of recycling BSC and provides insight into the importance of biopolymer-aggregate association in determining the mechanical properties of BSC.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"215 ","pages":"Article 108104"},"PeriodicalIF":11.2,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

China's provincial net-zero emissions effort: High-quality choices behind up-bottom quota schemes

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-03 DOI: 10.1016/j.resconrec.2024.108118

Haoran Wang , Tiantian Feng , Jiajie Kong , Mingli Cui , Daoshun Zha

Carbon emission rights are the spotlight for countries around the world in terms of how to allocate these under net-zero targets. This study proposes five allocation principles based on the carbon emission rights allocation mechanism, including equality, responsibility, capacity, efficiency, and time phases. Seventeen interprovincial emission allocation schemes are studied under China's net-zero emissions path, and then the best allocation scheme is selected using the PROMETHEE II and the linkage relationship among provincial quotas is clarifies using the PROMETHEE I. The results show that (1) the quota schemes that considers of equality, responsibility, capacity, efficiency and phasing principles to fully interprets “Common but Differentiated Responsibilities”. (2) Southeastern coastal areas such as Guangdong, Zhejiang, and Shanghai are assigned more quotas, whereas northeastern and western regions such as Heilongjiang and Jilin are allocated fewer quotas in the optimal scheme. (3) The government needs to dynamically adjust quota allocation principles on the basis of national emission reduction strategy goals and low-carbon policies. These results can provide China's provincial carbon emission share in reaching net zero to help formulate a provincial carbon action blueprint.

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引用次数: 0

After pandemic: Resilience of grain trade network from a port perspective on developed and developing countries

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-03 DOI: 10.1016/j.resconrec.2024.108119

Chunzhu Wei , Yaqi Xiao , Lingyue Li , Gengzhi Huang , Jian Liu , Desheng Xue

The COVID-19 pandemic disrupted global grain trade, raising concerns about the resilience of international agricultural supply chains, yet a comprehensive understanding of the dynamics of global grain trade network is still lacking. This study used 699,608 lines of grain trade flow data from 249 countries and 1,029 ports to reconstruct the near real-time grain trade network and integrated state-of-the-art network structure parameters (β coefficient) to assess the network resilience from 2020 to 2021. Our findings revealed that the nonlinear β coefficient indicates higher global grain network resilience compared to studies using traditional indicators like freight volume and degree. Developed countries' higher connectivity and better trade alliances contributed to their resilience to pandemic shocks, while many ports in smaller developing countries faced ongoing challenges. This study offers insights into recovery pathways and strategies to revitalize the international agricultural industry and ensure global food security.

{"title":"After pandemic: Resilience of grain trade network from a port perspective on developed and developing countries","authors":"Chunzhu Wei , Yaqi Xiao , Lingyue Li , Gengzhi Huang , Jian Liu , Desheng Xue","doi":"10.1016/j.resconrec.2024.108119","DOIUrl":"10.1016/j.resconrec.2024.108119","url":null,"abstract":"<div><div>The COVID-19 pandemic disrupted global grain trade, raising concerns about the resilience of international agricultural supply chains, yet a comprehensive understanding of the dynamics of global grain trade network is still lacking. This study used 699,608 lines of grain trade flow data from 249 countries and 1,029 ports to reconstruct the near real-time grain trade network and integrated state-of-the-art network structure parameters (β coefficient) to assess the network resilience from 2020 to 2021. Our findings revealed that the nonlinear β coefficient indicates higher global grain network resilience compared to studies using traditional indicators like freight volume and degree. Developed countries' higher connectivity and better trade alliances contributed to their resilience to pandemic shocks, while many ports in smaller developing countries faced ongoing challenges. This study offers insights into recovery pathways and strategies to revitalize the international agricultural industry and ensure global food security.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"215 ","pages":"Article 108119"},"PeriodicalIF":11.2,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High resolution CO2 emissions inventory and investigation of driving factors for China using an advanced dynamic estimation model

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2025-01-03 DOI: 10.1016/j.resconrec.2024.108109

Xiaosong Hou, Xiaoqi Wang, Shuiyuan Cheng, Chuanda Wang, Wei Wang

Developing a high-resolution CO₂ emissions inventory for China is challenging because of limited detailed parameter information in bottom-up approaches. This study integrated socioeconomic attributes, point emission data, industrial heat sources, and improved night-time light data to develop an advanced top-down dynamic CO₂ emissions estimation model. Using this model, a 0.01° resolution CO₂ emissions inventory for China from 2012 to 2022 was created. The results demonstrated that the model enhances spatial precision, distribution accuracy, and timeliness. Spatiotemporal dynamics help identify high emission periods and regions, and reflect the impact of geographical and social activities. The driver factor analysis indicated that GDP per capita, energy intensity, and carbon emissions intensity were the main drivers of changes in emissions. Each region should develop emission-reduction strategies based on the dynamic variations of these drivers. This study offers a reliable tool for carbon emissions inventory research, supporting accurate carbon emissions estimation and policy formulation.

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