Pub Date : 2024-10-26DOI: 10.1016/j.jclepro.2024.144043
Thin film nanocomposite (TFN) membranes, consisting of nanoparticles and polyamide barriers are an efficient separation tool for removal emerging wastes from water. In the last decade, conventional and advanced approaches for TFN membrane preparation have been developed. In addition, nanomaterials with low fouling tendency, high chemical resistance and versatile pore/channel structures are applied in the field of TFN membrane fabrication. Here, the state-of-the-art developments of TFN membranes for water treatment are comprehensively reviewed. Recent advances in the design/fabrication/modification of nanomaterials as well as the functionalization/optimization of TFN membranes are discussed in detail. The capital and operational expenditures (CAPEX and OPEX) analysis, the technological readiness level (TRL) and the patent-related status of the TFN membranes are then overviewed. It is found that most of the reported TFN membranes have been validated in a laboratory setting (TRL 4) and are gradually being validated/demonstrated in relevant environment (TRL 5/6). But, as far as we can see, translation of these researches to industry is yet to come since we found no report of associated patent licensing or startup creation. Therefore, the challenges and limitations of TFN membranes at the current stage are discussed, possible solutions are presented, and suggestions for future research on TFN membranes for water treatment are outlined.
{"title":"Thin-film nanocomposite (TFN) membrane technologies for the removal of emerging contaminants from wastewater","authors":"","doi":"10.1016/j.jclepro.2024.144043","DOIUrl":"10.1016/j.jclepro.2024.144043","url":null,"abstract":"<div><div>Thin film nanocomposite (TFN) membranes, consisting of nanoparticles and polyamide barriers are an efficient separation tool for removal emerging wastes from water. In the last decade, conventional and advanced approaches for TFN membrane preparation have been developed. In addition, nanomaterials with low fouling tendency, high chemical resistance and versatile pore/channel structures are applied in the field of TFN membrane fabrication. Here, the state-of-the-art developments of TFN membranes for water treatment are comprehensively reviewed. Recent advances in the design/fabrication/modification of nanomaterials as well as the functionalization/optimization of TFN membranes are discussed in detail. The capital and operational expenditures (CAPEX and OPEX) analysis, the technological readiness level (TRL) and the patent-related status of the TFN membranes are then overviewed. It is found that most of the reported TFN membranes have been validated in a laboratory setting (TRL 4) and are gradually being validated/demonstrated in relevant environment (TRL 5/6). But, as far as we can see, translation of these researches to industry is yet to come since we found no report of associated patent licensing or startup creation. Therefore, the challenges and limitations of TFN membranes at the current stage are discussed, possible solutions are presented, and suggestions for future research on TFN membranes for water treatment are outlined.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519716","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}
Pub Date : 2024-10-25DOI: 10.1016/j.jclepro.2024.144091
Ning Tan, Chengbo Wei, Fengming Yang, Ruijian Zhu, Wenlong Wang, Zengmei Wang
Low-calcium minerals exhibit significant potential as energy-efficient binder clinker materials, characterized by reduced emissions and enhanced carbon sequestration through accelerated carbonation curing. However, traditional low-calcium binders typically utilize one or two minerals in a straightforward compound form as clinker, resulting in elevated costs, excessive resource consumption, and suboptimal performance. This study developed a novel C2S-CS low-calcium system that integrated γ-C2S, β-C2S, and CS in specific proportions based on their characteristics, utilizing Simplex-centroid designs. Contour maps achieved to assess relationship between performance and mineral composition, while interaction mechanisms were investigated through carbonation products and reaction heat analysis. Furthermore, optimum proportion range of C2S-CS system can be synthesized efficiently and environmentally from solid waste wollastonite tailings in a single step. The results demonstrated that the designed system achieved synergistic improvements in CO2 sequestration capacity and mechanical properties. After 24 h of carbonation curing, it attained a compressive strength of 129 MPa, sequestered 217 kg/t CO2, and exhibited satisfactory durability. This study provides valuable insights for the practical production of low-calcium binders and reveals opportunities for developing sustainable building materials for eco-friendly construction.
{"title":"Design of C2S-CS low-calcium system for synergistic improvement of CO2 sequestration capacity and mechanical properties","authors":"Ning Tan, Chengbo Wei, Fengming Yang, Ruijian Zhu, Wenlong Wang, Zengmei Wang","doi":"10.1016/j.jclepro.2024.144091","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144091","url":null,"abstract":"Low-calcium minerals exhibit significant potential as energy-efficient binder clinker materials, characterized by reduced emissions and enhanced carbon sequestration through accelerated carbonation curing. However, traditional low-calcium binders typically utilize one or two minerals in a straightforward compound form as clinker, resulting in elevated costs, excessive resource consumption, and suboptimal performance. This study developed a novel C<sub>2</sub>S-CS low-calcium system that integrated γ-C<sub>2</sub>S, β-C<sub>2</sub>S, and CS in specific proportions based on their characteristics, utilizing Simplex-centroid designs. Contour maps achieved to assess relationship between performance and mineral composition, while interaction mechanisms were investigated through carbonation products and reaction heat analysis. Furthermore, optimum proportion range of C<sub>2</sub>S-CS system can be synthesized efficiently and environmentally from solid waste wollastonite tailings in a single step. The results demonstrated that the designed system achieved synergistic improvements in CO<sub>2</sub> sequestration capacity and mechanical properties. After 24 h of carbonation curing, it attained a compressive strength of 129 MPa, sequestered 217 kg/t CO<sub>2</sub>, and exhibited satisfactory durability. This study provides valuable insights for the practical production of low-calcium binders and reveals opportunities for developing sustainable building materials for eco-friendly construction.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489548","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}
The authors regret the omission in "Fig. 8 Results of site status survey." The complete information is provided below.
作者对 "图 8 遗址状况调查结果 "中的遗漏表示遗憾。完整信息如下。
{"title":"Corrigendum to “An urban agricultural block construction method based on low-carbon concepts: A case study of the Beijing-Tianjin area in China” [J. Clean. Product. 477 (2024) 143874]","authors":"Rui Zhang, Xiaojiao Li, Yukun Zhang, Xidong Ma, Huanjie Liu, Tianyi Chen","doi":"10.1016/j.jclepro.2024.144021","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144021","url":null,"abstract":"The authors regret the omission in \"Fig. 8 Results of site status survey.\" The complete information is provided below.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-25DOI: 10.1016/j.jclepro.2024.144090
Ecological compensation (EC) is not only an essential tool for correcting the externalities of ecosystem services (ESs) and fostering sustainable development but also a crucial means to alleviate poverty and promote balanced development across regions. Based on the ecosystem service flow (ESF) theory, this article presents a universal framework for screening ESs in EC research, and employs multiple models and multisource data to measure the supply and demand of five ESs. Moreover, this study examined the transfer values of air-mediated ESs (AMESs) and water-mediated ESs (WMESs) using the field strength model and flow allocation method, respectively, due to their significant differences in flow direction, flow rate and attenuation characteristics. The results indicate that: (1) there is a significant disparity between the supply and demand of the five ESs in Guangdong, with the scope and extent of the mismatch varying among the different ESs. Generally, deficit areas are located in the central urban regions of the Pearl River Delta (PRD) cities and cities in eastern and western Guangdong. (2) The transfer values of all the surplus areas of the AMESs and WMESs to their corresponding deficit areas are 37.02 billion yuan and 37.43 billion yuan, respectively, accounting for 62.9% of the AMESs supply value in the study area and 2.5% of the output value of the WMESs in the surplus areas, indicating that a significant amount of the output value has been transferred to areas outside of the study area. (3) The total transfer in/out value between surplus and deficit areas is 71.83 billion yuan, and is economically acceptable for deficit areas. (4) Compared with the results of this study, some economically developed regions with high ecosystem service value (ESV) outputs in Guangdong have not been compensated, and the current EC standard is relatively low. We suggest that Guangdong pilot horizontal EC, explore various market-oriented trading systems, increase vertical EC standards and enrich EC methods. This study provides a reference for the quantification of ESFs with different transmission carriers and the improvement of EC policy in Guangdong.
{"title":"Research on ecological compensation based on ecosystem service flow: A case study in Guangdong province, China","authors":"","doi":"10.1016/j.jclepro.2024.144090","DOIUrl":"10.1016/j.jclepro.2024.144090","url":null,"abstract":"<div><div>Ecological compensation (EC) is not only an essential tool for correcting the externalities of ecosystem services (ESs) and fostering sustainable development but also a crucial means to alleviate poverty and promote balanced development across regions. Based on the ecosystem service flow (ESF) theory, this article presents a universal framework for screening ESs in EC research, and employs multiple models and multisource data to measure the supply and demand of five ESs. Moreover, this study examined the transfer values of air-mediated ESs (AMESs) and water-mediated ESs (WMESs) using the field strength model and flow allocation method, respectively, due to their significant differences in flow direction, flow rate and attenuation characteristics. The results indicate that: (1) there is a significant disparity between the supply and demand of the five ESs in Guangdong, with the scope and extent of the mismatch varying among the different ESs. Generally, deficit areas are located in the central urban regions of the Pearl River Delta (PRD) cities and cities in eastern and western Guangdong. (2) The transfer values of all the surplus areas of the AMESs and WMESs to their corresponding deficit areas are 37.02 billion yuan and 37.43 billion yuan, respectively, accounting for 62.9% of the AMESs supply value in the study area and 2.5% of the output value of the WMESs in the surplus areas, indicating that a significant amount of the output value has been transferred to areas outside of the study area. (3) The total transfer in/out value between surplus and deficit areas is 71.83 billion yuan, and is economically acceptable for deficit areas. (4) Compared with the results of this study, some economically developed regions with high ecosystem service value (ESV) outputs in Guangdong have not been compensated, and the current EC standard is relatively low. We suggest that Guangdong pilot horizontal EC, explore various market-oriented trading systems, increase vertical EC standards and enrich EC methods. This study provides a reference for the quantification of ESFs with different transmission carriers and the improvement of EC policy in Guangdong.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-25DOI: 10.1016/j.jclepro.2024.144088
Energy and economic growth are closely linked and have negative impacts on the environment. Both environmental protection and economic development are significant global focal points of concern. Australian economic growth has slowed but energy consumption has increased. The relationship between economic growth and energy consumption has changed significantly. However, existing methods for accounting energy transfers between industries overlook the role of embodied energy, making them insufficient to fully capture the actual energy usage in both domestic and international trade. This study investigates the structural changes in embodied energy in the Australian economy. The paper integrates sectors as the section nodes for a network and constructs a two-layer network model to analyze energy flows both between and within nodes. The results show that the Australian embodied energy network exhibited significant variations in efficiency and interconnectedness over time, with a trend toward shorter, more interconnected paths from 2015 to 2019, enhancing overall network efficiency. The Australian embodied energy network currently faces significant funding constraints. The findings show that the Australian economic sectors have increased energy consumption in production without contributing to economic growth due to the concentration of resources within the network.
{"title":"Network structure analysis based on embodied energy of the Australian economy","authors":"","doi":"10.1016/j.jclepro.2024.144088","DOIUrl":"10.1016/j.jclepro.2024.144088","url":null,"abstract":"<div><div>Energy and economic growth are closely linked and have negative impacts on the environment. Both environmental protection and economic development are significant global focal points of concern. Australian economic growth has slowed but energy consumption has increased. The relationship between economic growth and energy consumption has changed significantly. However, existing methods for accounting energy transfers between industries overlook the role of embodied energy, making them insufficient to fully capture the actual energy usage in both domestic and international trade. This study investigates the structural changes in embodied energy in the Australian economy. The paper integrates sectors as the section nodes for a network and constructs a two-layer network model to analyze energy flows both between and within nodes. The results show that the Australian embodied energy network exhibited significant variations in efficiency and interconnectedness over time, with a trend toward shorter, more interconnected paths from 2015 to 2019, enhancing overall network efficiency. The Australian embodied energy network currently faces significant funding constraints. The findings show that the Australian economic sectors have increased energy consumption in production without contributing to economic growth due to the concentration of resources within the network.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489547","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}
Pub Date : 2024-10-24DOI: 10.1016/j.jclepro.2024.144086
The "green prison" refers to the prisoner's dilemma that entrepreneurs face in regard to sustainability, and entrepreneurs tend to escape from the green prison through a series of proactive legitimizing behaviors such as "changing or establishing institutions that create incentives to play the competitive game—norms, property rights, and legislation". However, how sustainable entrepreneurial enterprises (SEEs) escape from the "green prison" under environmental dynamism and the dynamic changes in the legitimacy acquisition process has not yet received adequate attention. This paper introduces ecological niche theory into legitimacy research, interprets the growth of SEE as the process of individual ecological niches realizing ecostate‒ecorole enhancement within population ecological niches, constructs a set of legitimacy scales and an ecostate‒ecorole index system for SEE, and empirically analyzes a sample of 307 SEEs in China. The results show that (1) cognitive legitimacy, normative legitimacy, and regulatory legitimacy play the ecostate‒ecorole enhancement roles for SEEs at low, medium, and high ecological niche levels, respectively; (2) the dynamic change patterns of legitimacy are consistent across the economic, social, and environmental dimensions of the ecological niche of a SEE; (3)environmental dynamism positively moderates the relationship between cognitive legitimacy and the ecological niche situation at a low ecological niche level, as well as between normative legitimacy and the enhancement of the ecological niche situation at a medium ecological niche level, however, it does not moderate the relationship between regulatory legitimacy and the enhancement of the ecological niche situation at a high ecological niche level. This study identifies the paths through which legitimacy changes dynamically along different dimensions and levels of the ecological niche of a SEE, which provides new guidelines on how SEEs can acquire legitimacy under environmental dynamism and expands and enriches the research field of ecological niche theory.
{"title":"How can sustainable entrepreneurial enterprises escape the \"green prison\" in the context of environmental dynamism? — An Ecological Niche Enhancement Perspective","authors":"","doi":"10.1016/j.jclepro.2024.144086","DOIUrl":"10.1016/j.jclepro.2024.144086","url":null,"abstract":"<div><div>The \"green prison\" refers to the prisoner's dilemma that entrepreneurs face in regard to sustainability, and entrepreneurs tend to escape from the green prison through a series of proactive legitimizing behaviors such as \"changing or establishing institutions that create incentives to play the competitive game—norms, property rights, and legislation\". However, how sustainable entrepreneurial enterprises (SEEs) escape from the \"green prison\" under environmental dynamism and the dynamic changes in the legitimacy acquisition process has not yet received adequate attention. This paper introduces ecological niche theory into legitimacy research, interprets the growth of SEE as the process of individual ecological niches realizing ecostate‒ecorole enhancement within population ecological niches, constructs a set of legitimacy scales and an ecostate‒ecorole index system for SEE, and empirically analyzes a sample of 307 SEEs in China. The results show that (1) cognitive legitimacy, normative legitimacy, and regulatory legitimacy play the ecostate‒ecorole enhancement roles for SEEs at low, medium, and high ecological niche levels, respectively; (2) the dynamic change patterns of legitimacy are consistent across the economic, social, and environmental dimensions of the ecological niche of a SEE; (3)environmental dynamism positively moderates the relationship between cognitive legitimacy and the ecological niche situation at a low ecological niche level, as well as between normative legitimacy and the enhancement of the ecological niche situation at a medium ecological niche level, however, it does not moderate the relationship between regulatory legitimacy and the enhancement of the ecological niche situation at a high ecological niche level. This study identifies the paths through which legitimacy changes dynamically along different dimensions and levels of the ecological niche of a SEE, which provides new guidelines on how SEEs can acquire legitimacy under environmental dynamism and expands and enriches the research field of ecological niche theory.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489222","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}
Pub Date : 2024-10-24DOI: 10.1016/j.jclepro.2024.144083
Underground coal gasification (UCG) represents a promising clean and low-carbon energy technology, which could create a suitable cavity for in situ carbon sequestration by mineralization reaction between CO2 and coal ash produced from UCG. This may assist in achieving a net-zero carbon emission goal for UCG projects. To determine the carbonation efficiency and mineralization potential of CO2 mineral sequestration in abandoned UCG cavity, coal ash produced from the gasification of three different low-rank coal samples was used in this study. A comparative experiment was conducted using a group of high-calcium fly ash from a coal-fired power plant. All mineralization reaction experiments were performed in a high-temperature and high-pressure reactor, with CO2 pressures ranging from 2 to 8 MPa and temperatures ranging from 40 to 80°C. These conditions were selected to simulate the sequestration conditions in the UCG cavity. Real-time monitoring of CO2 pressure in the reactor was used to assess the impact of solid-to-water ratio, temperature, and pressure on the CO2 mineralization. X-ray diffraction and scanning electron microscopy were employed to identify the presence of newly formed carbonate minerals associated with mineralization reaction. The results indicated that the coal ash produced by gasification pretreatment at 900°C contains a substantial quantity of alkaline-earth oxides, such as calcium oxide (CaO), with a relative mass fraction reaching 25.9%. It provided an adequate supply of alkali metal ions for the mineralization reaction, which exhibited comparable efficacy in mineralizing CO2 to that observed in high-calcium fly ash. Without stirring, at lower solid-to-water ratio, the maximum amount of CO2 consumed through mineralization was increased by up to 74.12%. Carbonation efficiency decreased with rising temperatures below 70°C due to the limited dissolution of CO2 in water, it increased with elevated pressure but decreased in the supercritical state, potentially attributable to the dissolution of carbonate minerals in a supercritical CO2 environment. The process of mineralization reaction between CO2 and coal ash aligned well with the Surface Coverage Model (R2 values ranging from 0.92 to 0.99). A preliminary estimation based on Chinese coal reserves revealed that the potential of CO2 sequestration capacity in UCG cavities by mineralization ranging from 29 to 102 Gt, an additional 517 Gt CO2 may be stored when filled with fly ash. This paper provides theoretical bases for predicting the maximum carbonation efficiency under high-pressure and high-temperature conditions in UCG cavities, and research directions for achieving a net-zero carbon emission goal for UCG projects.
{"title":"Mineralization reaction between CO2 and coal ash produced from underground coal gasification: Implication for in situ carbon sequestration","authors":"","doi":"10.1016/j.jclepro.2024.144083","DOIUrl":"10.1016/j.jclepro.2024.144083","url":null,"abstract":"<div><div>Underground coal gasification (UCG) represents a promising clean and low-carbon energy technology, which could create a suitable cavity for in situ carbon sequestration by mineralization reaction between CO<sub>2</sub> and coal ash produced from UCG. This may assist in achieving a net-zero carbon emission goal for UCG projects. To determine the carbonation efficiency and mineralization potential of CO<sub>2</sub> mineral sequestration in abandoned UCG cavity, coal ash produced from the gasification of three different low-rank coal samples was used in this study. A comparative experiment was conducted using a group of high-calcium fly ash from a coal-fired power plant. All mineralization reaction experiments were performed in a high-temperature and high-pressure reactor, with CO<sub>2</sub> pressures ranging from 2 to 8 MPa and temperatures ranging from 40 to 80°C. These conditions were selected to simulate the sequestration conditions in the UCG cavity. Real-time monitoring of CO<sub>2</sub> pressure in the reactor was used to assess the impact of solid-to-water ratio, temperature, and pressure on the CO<sub>2</sub> mineralization. X-ray diffraction and scanning electron microscopy were employed to identify the presence of newly formed carbonate minerals associated with mineralization reaction. The results indicated that the coal ash produced by gasification pretreatment at 900°C contains a substantial quantity of alkaline-earth oxides, such as calcium oxide (CaO), with a relative mass fraction reaching 25.9%. It provided an adequate supply of alkali metal ions for the mineralization reaction, which exhibited comparable efficacy in mineralizing CO<sub>2</sub> to that observed in high-calcium fly ash. Without stirring, at lower solid-to-water ratio, the maximum amount of CO<sub>2</sub> consumed through mineralization was increased by up to 74.12%. Carbonation efficiency decreased with rising temperatures below 70°C due to the limited dissolution of CO<sub>2</sub> in water, it increased with elevated pressure but decreased in the supercritical state, potentially attributable to the dissolution of carbonate minerals in a supercritical CO<sub>2</sub> environment. The process of mineralization reaction between CO<sub>2</sub> and coal ash aligned well with the Surface Coverage Model (R<sup>2</sup> values ranging from 0.92 to 0.99). A preliminary estimation based on Chinese coal reserves revealed that the potential of CO<sub>2</sub> sequestration capacity in UCG cavities by mineralization ranging from 29 to 102 Gt, an additional 517 Gt CO<sub>2</sub> may be stored when filled with fly ash. This paper provides theoretical bases for predicting the maximum carbonation efficiency under high-pressure and high-temperature conditions in UCG cavities, and research directions for achieving a net-zero carbon emission goal for UCG projects.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-24DOI: 10.1016/j.jclepro.2024.144085
The real estate sector is a substantial energy consumer, contributing to a large share of global greenhouse gas emissions. Despite the known links between the real estate sector and sustainable assets, studies exploring co-movements or dependence between them are still scarce. The present paper contributes to this challenging problem by capturing and analyzing the non-linear dependence over time and frequency between real estate returns and sustainable assets - green bonds, clean energy and environmental, social, and governance (ESG) stocks. We adopt a modeling approach that utilizes both the cross-quantilogram and the quantile coherency method. Our empirical results indicate unidirectional dependence from the real estate sector to most sustainable assets in both tails and under normal market conditions, although bidirectional dependence in the lower quantiles. Moreover, based on recursive window estimations, when the Covid-19 period is included, green bond and real estate returns are tail-dependent both during boom and bust periods. However, in non-pandemic periods, higher dependency is found during booms. Furthermore, the returns of the green bonds are less dependent on real estate returns compared to other sustainable assets. Our findings are potentially relevant for investment portfolio and public policy decision-making.
{"title":"Interconnectedness between real estate returns and sustainable investments: A cross-quantilogram and quantile coherency approach","authors":"","doi":"10.1016/j.jclepro.2024.144085","DOIUrl":"10.1016/j.jclepro.2024.144085","url":null,"abstract":"<div><div>The real estate sector is a substantial energy consumer, contributing to a large share of global greenhouse gas emissions. Despite the known links between the real estate sector and sustainable assets, studies exploring co-movements or dependence between them are still scarce. The present paper contributes to this challenging problem by capturing and analyzing the non-linear dependence over time and frequency between real estate returns and sustainable assets - green bonds, clean energy and environmental, social, and governance (ESG) stocks. We adopt a modeling approach that utilizes both the cross-quantilogram and the quantile coherency method. Our empirical results indicate unidirectional dependence from the real estate sector to most sustainable assets in both tails and under normal market conditions, although bidirectional dependence in the lower quantiles. Moreover, based on recursive window estimations, when the Covid-19 period is included, green bond and real estate returns are tail-dependent both during boom and bust periods. However, in non-pandemic periods, higher dependency is found during booms. Furthermore, the returns of the green bonds are less dependent on real estate returns compared to other sustainable assets. Our findings are potentially relevant for investment portfolio and public policy decision-making.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489220","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}
Pub Date : 2024-10-24DOI: 10.1016/j.jclepro.2024.144059
The principal urban agglomerations in China function as critical hubs for both economic advancement and the mitigation of carbon emissions. Given the disparate levels of development across various urban agglomerations, trade between these agglomerations may result in inequality between carbon transfers and value added transfers. Assessing carbon inequality among major urban agglomerations in China can help identify the identification of primary trade relationships and industrial sectors of carbon inequality, thereby fostering the coordinated development of urban agglomerations. This study constructs a carbon inequality index based on an environmentally extended input-output model. This study conducts a thorough evaluation of carbon inequality among various urban agglomerations and analyzes the industry characteristics of embodied carbon net transfers and value added net transfers in typical urban agglomerations. The research findings indicate that: The carbon inequality index for underdeveloped urban agglomerations, exemplified by the Central Plains urban agglomeration, is generally greater than 1. The carbon inequality index for developed urban agglomerations, exemplified by the Yangtze River Delta urban agglomeration, is generally less than 1 due to their higher levels of economic development. An analysis of the industry characteristics of carbon emissions net transfer and value added net transfer in typical urban agglomerations reveals that heavy industry is the main contributing sector to the net inflow of embodied carbon and net outflow of value added in the Central Plains urban agglomeration. The main contributing sector to the net outflow of embodied carbon and net inflow of value added in the Yangtze River Delta urban agglomeration is the service industry. This study ultimately proposes more refined recommendations aimed at fostering coordinated development among regions in China, establishing a win-win situation for economic growth and carbon reduction.
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Pub Date : 2024-10-24DOI: 10.1016/j.jclepro.2024.144007
In the past decade, industries have undergone significant transformations driven by digitalization and sustainable development, particularly through the integration of Circular Economy (CE) and Industry 4.0 (I4.0), known as Smart Circular Economy (SCE). This study investigates the adoption of SCE in manufacturing firms by identifying and validating fourteen key enablers through a literature review and expert opinions. The structural relationships among these enablers are explored using Interpretive Structural Modeling (ISM). Further, the fuzzy-MICMAC analysis categorizes them into four clusters. The results reveal that ‘technical capability,’ ‘top management involvement,’ and ‘supportive policies' are the prime enablers for SCE implementation. The developed structural model of the SCE enablers helps the practitioners by focusing on developing supportive policies for SCE, enhancing technical capabilities and involving the top management in SCE transformation. The findings also suggest allocating a suitable budget for adopting SCE and developing the infrastructure for process digitalization in the manufacturing firm. Further, this study also act as a reference point for organizations to transform the linear economy into SCE to face society's environmental challenges.
{"title":"Navigating the Smart Circular Economy: A framework for manufacturing firms","authors":"","doi":"10.1016/j.jclepro.2024.144007","DOIUrl":"10.1016/j.jclepro.2024.144007","url":null,"abstract":"<div><div>In the past decade, industries have undergone significant transformations driven by digitalization and sustainable development, particularly through the integration of Circular Economy (CE) and Industry 4.0 (I4.0), known as Smart Circular Economy (SCE). This study investigates the adoption of SCE in manufacturing firms by identifying and validating fourteen key enablers through a literature review and expert opinions. The structural relationships among these enablers are explored using Interpretive Structural Modeling (ISM). Further, the fuzzy-MICMAC analysis categorizes them into four clusters. The results reveal that ‘technical capability,’ ‘top management involvement,’ and ‘supportive policies' are the prime enablers for SCE implementation. The developed structural model of the SCE enablers helps the practitioners by focusing on developing supportive policies for SCE, enhancing technical capabilities and involving the top management in SCE transformation. The findings also suggest allocating a suitable budget for adopting SCE and developing the infrastructure for process digitalization in the manufacturing firm. Further, this study also act as a reference point for organizations to transform the linear economy into SCE to face society's environmental challenges.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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