Excessive greenhouse gas emissions lead to global warming,which poses a critical challenge for human society.Worldwide consensus that carbon emissions must be reduced to achieve sustainable development has raised rese...Excessive greenhouse gas emissions lead to global warming,which poses a critical challenge for human society.Worldwide consensus that carbon emissions must be reduced to achieve sustainable development has raised research interest on the topic of carbon footprint,an assessment standard for measuring greenhouse gas emissions.To shed light on this important topic,we introduce carbon footprint-related international standards and domestic policies,and conduct quantitative and qualitative analyses to provide a comprehensive overview of the current carbon footprint literature.Specifically,through a bibliometric analysis of 13203 carbon foot-print publications circulated over the past decade,we quantify the publication volume,influence,and collaboration networks of countries/regions,institutions,and journals.The results show that publications on carbon footprint have been increasing since 2013,and more so after 2017.Regarding domain influence,China and its academic institutions show a strong influence.In addition,a cluster analysis of the keywords of all publications shows seven categories,encompassing carbon footprint accounting methods and research priorities.Furthermore,a qualitative analysis of the research methods and subjects related to carbon footprint reveals the need to increase communication and collaboration among different disciplines and countries/regions to strengthen the construction of carbon footprint systems.Accordingly,this study identifies popular topics and development trends in the carbon footprint literature to provide research direction for promoting green and low-carbon transformation of the social economy to achieve sustainable development.展开更多
Although the tobacco industry is a significant contributor to energy consumption and carbon emissions its negative environmental impact has received inadequate attention globally.Cigarette factories are a key link in ...Although the tobacco industry is a significant contributor to energy consumption and carbon emissions its negative environmental impact has received inadequate attention globally.Cigarette factories are a key link in the tobacco industry’s production chain,and using data provided by a cigarette factory in China we conduct a life cycle assessment to account for the carbon footprint of cigar production in cigarette factories.The results of the assessment show that factory air conditioning is the most important contributor to the environmental load of the cigar manufacturing process,while electricity is the key factor that contributes the greatest envi‐ronmental load across all of the processes in the product life cycle.In addition,packaging,including small boxes and cigarette cartons,has a significant impact on the industry’s environmental footprint due to its use of raw materials.We find the carbon footprint of the entire production process for cigar products to be 383.59 kg CO_(2) eq.Based on our findings,we suggest ways to optimize cigar/cigarette factory processes to re‐duce carbon emissions that can help to promote sustainable development in related industries.展开更多
Micro-energy systems contribute significantly to environmental improvement by reducing dependence on power grids through the utilization of multiple renewable energy sources.This study quantified the environmental imp...Micro-energy systems contribute significantly to environmental improvement by reducing dependence on power grids through the utilization of multiple renewable energy sources.This study quantified the environmental impact of a micro-energy network system in an industrial park through a life cycle assessment using the operation of the micro-energy network over a year as the functional unit and“cradle-to-gate”as the system boundary.Based on the baseline scenario,a natural gas generator set was added to replace central heating,and the light pipes were expanded to constitute the optimized scenario.The results showed that the key impact categories for both scenarios were global warming,fine particulate matter formation,human carcinogenic toxicity,and human non-carcinogenic toxicity.The overall environmental impact of the optimized scenario was reduced by 68%compared to the baseline scenario.A sensitivity analysis of the key factors showed that electricity from the power grid was the key impact factor in both scenarios,followed by central heating and natural gas.Therefore,to reduce the environmental impact of network systems,it is necessary to further optimize the grid power structure.The research approach can be used to optimize micro-energy networks and evaluate the environmental impact of different energy systems.展开更多
基金supported by the Shandong Provincial Key Research and Development Program [Grant No.2023SFGC0101]National Key Research and Development Program [Grant No.2020YFC 1910000]Mount Taishan Scholar Young Expert Program [Grant No.tsqn202103010].
文摘Excessive greenhouse gas emissions lead to global warming,which poses a critical challenge for human society.Worldwide consensus that carbon emissions must be reduced to achieve sustainable development has raised research interest on the topic of carbon footprint,an assessment standard for measuring greenhouse gas emissions.To shed light on this important topic,we introduce carbon footprint-related international standards and domestic policies,and conduct quantitative and qualitative analyses to provide a comprehensive overview of the current carbon footprint literature.Specifically,through a bibliometric analysis of 13203 carbon foot-print publications circulated over the past decade,we quantify the publication volume,influence,and collaboration networks of countries/regions,institutions,and journals.The results show that publications on carbon footprint have been increasing since 2013,and more so after 2017.Regarding domain influence,China and its academic institutions show a strong influence.In addition,a cluster analysis of the keywords of all publications shows seven categories,encompassing carbon footprint accounting methods and research priorities.Furthermore,a qualitative analysis of the research methods and subjects related to carbon footprint reveals the need to increase communication and collaboration among different disciplines and countries/regions to strengthen the construction of carbon footprint systems.Accordingly,this study identifies popular topics and development trends in the carbon footprint literature to provide research direction for promoting green and low-carbon transformation of the social economy to achieve sustainable development.
基金supported by Shandong Natural Science Founda‐tion[Grant No.ZR2023MD079]Shandong Province Social Science Planning Research Project[Grant No.22CKRJ04]+2 种基金Taishan Scholar Project[Grant No.tsqn202103010]Department of Science and Tech‐nology of Shandong Province[Grant No.2021SFGC0904-05]Zaozhuang Science and Technology Bureau[Grant No.2021GH22].
文摘Although the tobacco industry is a significant contributor to energy consumption and carbon emissions its negative environmental impact has received inadequate attention globally.Cigarette factories are a key link in the tobacco industry’s production chain,and using data provided by a cigarette factory in China we conduct a life cycle assessment to account for the carbon footprint of cigar production in cigarette factories.The results of the assessment show that factory air conditioning is the most important contributor to the environmental load of the cigar manufacturing process,while electricity is the key factor that contributes the greatest envi‐ronmental load across all of the processes in the product life cycle.In addition,packaging,including small boxes and cigarette cartons,has a significant impact on the industry’s environmental footprint due to its use of raw materials.We find the carbon footprint of the entire production process for cigar products to be 383.59 kg CO_(2) eq.Based on our findings,we suggest ways to optimize cigar/cigarette factory processes to re‐duce carbon emissions that can help to promote sustainable development in related industries.
基金funded by the National Key R&D Project[Grant No.2019YFC1903900]Key R&D Province[Grant No.2023SFGC0101]Taishan Scholar Project[Grant No.tsqn202103010].
文摘Micro-energy systems contribute significantly to environmental improvement by reducing dependence on power grids through the utilization of multiple renewable energy sources.This study quantified the environmental impact of a micro-energy network system in an industrial park through a life cycle assessment using the operation of the micro-energy network over a year as the functional unit and“cradle-to-gate”as the system boundary.Based on the baseline scenario,a natural gas generator set was added to replace central heating,and the light pipes were expanded to constitute the optimized scenario.The results showed that the key impact categories for both scenarios were global warming,fine particulate matter formation,human carcinogenic toxicity,and human non-carcinogenic toxicity.The overall environmental impact of the optimized scenario was reduced by 68%compared to the baseline scenario.A sensitivity analysis of the key factors showed that electricity from the power grid was the key impact factor in both scenarios,followed by central heating and natural gas.Therefore,to reduce the environmental impact of network systems,it is necessary to further optimize the grid power structure.The research approach can be used to optimize micro-energy networks and evaluate the environmental impact of different energy systems.
