Journal of Cleaner Production最新文献_第5页

Exploration of Ecosystem Asset-Economy Coupling Coordination and Its Endogenous and Exogenous Drivers in Mountainous Regions

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-17 DOI: 10.1016/j.jclepro.2024.144460

Yuan Huang, Shidong Zhang, Jian Zhang, Feifei Fan, Hua Zheng

{"title":"Exploration of Ecosystem Asset-Economy Coupling Coordination and Its Endogenous and Exogenous Drivers in Mountainous Regions","authors":"Yuan Huang, Shidong Zhang, Jian Zhang, Feifei Fan, Hua Zheng","doi":"10.1016/j.jclepro.2024.144460","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144460","url":null,"abstract":"Sustainable development in mountainous areas is closely linked to human ecological well-being. The coordination of ecological conservation and economic development is an important issue that urgently requires exploration. This study, based on a re-examination of the relationship between ecological conservation and economic development, revises the coupling framework between ecosystem assets in mountainous areas and regional economic development. Utilizing county-level statistical data in conjunction with remote sensing data, the study employs the coupling coordination degree model to characterize the interactive relationship between mountainous ecosystem assets and regional economic development. Additionally, machine learning methods are integrated to measure the contributions of driving factors within different zones characterized by varying degrees of coupling and economic features. The study's findings indicate: (1) From 2000 to 2020, the coupling coordination relationship between EA (Ecological Assets) and RE (Regional Economy) in the Qinling has been continuously improving. The northeastern part of the Qinling is an area where the coupling coordination status is relatively poor. (2) Urbanization contributes the most to the coupling coordination system across different zones, but this marginal impact is continuously diminishing with the increase in the urbanization rate. (3) The tourism industry, under the condition of lower secondary industry development levels, has a weaker driving effect on economic development. Moderate development of light industry would be more conducive to the coupling coordination of ecosystem asset protection and economic development in mountainous areas. The research findings can provide scientific reference for the formulation of green development strategies in mountainous regions.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"50 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840926","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

Simulation and Optimization of A Dual-loop Organic Rankine Cycle-Onboard Carbon Capture System for LNG-powered Ships

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-17 DOI: 10.1016/j.jclepro.2024.144512

Wenzhong Gao, Huiwen Zheng, Yuan Zhang, Zhen Tian, Junjie Zhou, Xi Jin

{"title":"Simulation and Optimization of A Dual-loop Organic Rankine Cycle-Onboard Carbon Capture System for LNG-powered Ships","authors":"Wenzhong Gao, Huiwen Zheng, Yuan Zhang, Zhen Tian, Junjie Zhou, Xi Jin","doi":"10.1016/j.jclepro.2024.144512","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144512","url":null,"abstract":"A dual-loop organic Rankine cycle-onboard carbon capture system (DORC-OCCS) for liquid natural gas (LNG) -powered ships is proposed to satisfy both objectives of carbon emission reduction and efficient energy utilization for ships. In this system, the wasted heat from the ship powers the reboiler and drives the high-temperature ORC to generate electricity. Simultaneously, LNG cold energy is utilized to liquefy the captured CO2 while also driving the low-temperature ORC. The effects of liquid-to-gas ratios (L/G), exhaust gas flow rates (mEG), and absorber packing heights (Habs) on the heat and mass transfer, thermodynamics, and economic performance of the system are investigated. The working conditions to accomplish ideal thermodynamic performance and economic benefits are determined through multi-objective optimization. The results show that: the carbon capture rate tends to be stabilized at the L/G ratio of 1.2, and the total capture cost is the lowest. Increasing mEG negatively impacts carbon capture rate, net output power, and exergy efficiency. As Habs increases, both the total capture cost and payback period are reduced. At the optimal working conditions (L/G =0.91, mEG =35,210 kg/h, Habs =10 m), DORC-OCCS obtains a carbon capture rate of 90.56% and a net output power of 305 kW. Meanwhile, the energy and exergy efficiencies are 53.71% and 17.88%, respectively, resulting in a total capture cost of 89.62 $/tCO2 and a payback of 9.30 years. Compared to a conventional OCCS and an OCCS with a single-stage ORC, DORC-OCCS exhibits superior overall performance. The related study provides a framework for future research and industrialized application of carbon capture technology in marine emissions.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"82 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840931","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

Exploring the Shift to Bamboo Alternatives: A Case Study on Wood and Plastic Replacement in Ethiopia

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-17 DOI: 10.1016/j.jclepro.2024.144507

Amsalu Nigatu Alamerew, Zhen Zhu, Robert Kozak, Anil Kumar Shrestha, Samuel Agdew, Guangyu Wang

{"title":"Exploring the Shift to Bamboo Alternatives: A Case Study on Wood and Plastic Replacement in Ethiopia","authors":"Amsalu Nigatu Alamerew, Zhen Zhu, Robert Kozak, Anil Kumar Shrestha, Samuel Agdew, Guangyu Wang","doi":"10.1016/j.jclepro.2024.144507","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144507","url":null,"abstract":"This study explores the potential of bamboo as a sustainable alternative to plastic and wood in Ethiopia’s horticulture sector. The research, targeting Small and Micro Enterprises, farmers, and supermarkets reveals a significant demand for boxes. Current box sustainability is questioned due to environmental regulations, raw material scarcity, and public dissatisfaction. Despite acknowledged advantages, bamboo’s use in box production is unexplored in Ethiopia. However, stakeholders are open to bamboo boxes, given their standard features. The study forecasts a 15% annual increase in box demand and proposes supermarket, single standard, and double standard bamboo boxes based on user preferences. A strategic roadmap is suggested to enhance bamboo box operations. Bamboo products offer significant environmental and economic advantages over plastic and wooden alternatives, contributing to reduced pollution and enhanced waste management. However, the transition to bamboo may face resistance. Thus, awareness campaigns and pilot projects can highlight its benefits. Significant investments in training and supply chain setup, and partnerships with local suppliers and a strong logistics network are essential. Supportive government policies and incentives are crucial, especially those promoting sustainable practices. Collaborations with NGOs can enhance awareness. Increased demand requires sustainable management, community-based farming, and certified practices. The study recommends promoting the product as a pilot project, conducting on-service testing, providing financial support to enterprises, and maintaining regular monitoring.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"27 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840888","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

Multi-objective Optimization Based on the RSM-MOPSO-GA Algorithm and Synergistic Enhancement Mechanism of High-Performance Porous Concrete 基于 RSM-MOPSO-GA 算法的多目标优化和高性能多孔混凝土的协同增强机制

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144492

Guanglei Qu, Mulian Zheng, Chuan Lu, Jiakang Song, Dazhi Dong, Yueming Yuan

{"title":"Multi-objective Optimization Based on the RSM-MOPSO-GA Algorithm and Synergistic Enhancement Mechanism of High-Performance Porous Concrete","authors":"Guanglei Qu, Mulian Zheng, Chuan Lu, Jiakang Song, Dazhi Dong, Yueming Yuan","doi":"10.1016/j.jclepro.2024.144492","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144492","url":null,"abstract":"Porous concrete (PC) can effectively mitigate various environmental problems associated with road space. Exploring high-performance porous concrete (HPPC) is essential to expanding its applications. However, the current single methods for improvement have almost reached a bottleneck, particularly in terms of mechanical properties. Therefore, this research seeks further breakthroughs from synergistic enhancement and multi-objective optimization. The optimization variables were identified through single-factor experiments, and the optimal solutions for the optimization objectives were subsequently obtained using the response surface methodology (RSM). To address the inherent limitation of RSM in delivering only a single optimal solution, this paper proposed a novel RSM-MOPSO-GA hybrid optimization algorithm. Meanwhile, the synergistic enhancement mechanisms were elucidated through microstructural analysis. The results indicate that the individual enhancement effects of basalt fiber (BF), nano-SiO₂ (NS), and waterborne epoxy resin (WER) are limited. However, the RSM-based optimization significantly improved the performance of HPPC, with compressive strength and flexural strength increased by 51.4% and 69.8%, respectively, and the permeability coefficient enhanced by 33.8%. Furthermore, the application of the RSM-MOPSO-GA algorithm produced a stable Pareto front containing 50 individuals for users' decision-making. The interaction between WER and NS at the microscale, combined with the reinforcement of BF at the mesoscale, establishes a synergistic enhancement mechanism. The research findings provide both a theoretical foundation and experimental basis for the further application of HPPC. Additionally, it also offers a novel solution to address the challenges of multi-objective optimization in concrete performance.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"49 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832280","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

Mariculture solid waste application for marine recirculating aquaculture system wastewater treatment: The role of neglected sulfide electron donor

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144493

Yuanjun Liu, Yangfan Deng, Qirui Wu, Chunji Jin, Yangguo Zhao, Mengchun Gao, Liang Guo

{"title":"Mariculture solid waste application for marine recirculating aquaculture system wastewater treatment: The role of neglected sulfide electron donor","authors":"Yuanjun Liu, Yangfan Deng, Qirui Wu, Chunji Jin, Yangguo Zhao, Mengchun Gao, Liang Guo","doi":"10.1016/j.jclepro.2024.144493","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144493","url":null,"abstract":"Marine recirculating aquaculture systems (RAS) are acknowledged as sustainable fish farming models, and their discharge of high nitrate-rich wastewater presents potential environmental concerns. Additionally, the low carbon-to-nitrogen ratio of RAS wastewater poses a significant challenge for nitrate removal. In this study, a novel heterotrophic coupled with sulfide-based autotrophic denitrification (HSD) driven by mariculture solid waste (MSW) was developed for marine RAS wastewater treatment. MSW acidogenic fermentation involved both acidogenesis and sulfidogenesis processes, producing an acidogenic liquid rich in VFAs and sulfide, which was added to the HSD system to drive denitrification. Robust N-removal performance was achieved in the MSW-driven HSD system with 97.8% removal efficiency of nitrate and low nitrite residual (1.2 mg/L) despite high salinity conditions. Kinetic analysis demonstrated a two-stage nitrogen removal process, attributed to a two-step sulfide oxidation model involving the conversion of sulfide to biologically produced elemental sulfur (BPS0) and subsequent oxidation of BPS0 to sulfate. Combined organic matter and sulfide improved the denitrification rate and decreased nitrite accumulation by mitigating the competition between nitrate and nitrite for electrons. The corporation of heterotrophic (Thauera) and autotrophic (Thiobacillus) denitrifiers guaranteed stable nitrogen removal in the HSD system. Moreover, the complete metabolic pathways of C/N/S were further verified by metagenomic analysis. This study demonstrated the potential and capability of utilizing MSW to achieve efficient and cost-effective RAS wastewater denitrification.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"30 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825740","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

Screening of Practical Low-accumulating Crops in Cadmium-polluted Farmland: A Field Survey and Field Trail in Guangdong Province, China 镉污染农田中实用低积累作物的筛选：中国广东省的实地调查与田间试验

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144508

Jianbin Deng, Zhaoxin Xu, Yusong Dai, Jiawen Zhong, Fangjie Shi, Jinjin Wang, Wenyan Li, Yongtao Li, Yongdong Huang, Yulong Zhang

{"title":"Screening of Practical Low-accumulating Crops in Cadmium-polluted Farmland: A Field Survey and Field Trail in Guangdong Province, China","authors":"Jianbin Deng, Zhaoxin Xu, Yusong Dai, Jiawen Zhong, Fangjie Shi, Jinjin Wang, Wenyan Li, Yongtao Li, Yongdong Huang, Yulong Zhang","doi":"10.1016/j.jclepro.2024.144508","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144508","url":null,"abstract":"Cadmium (Cd) contamination in soil poses significant threats to human health through the food chain. An effective and eco-friendly solution is to cultivate crops that absorb less Cd in their edible parts, referred to as low-accumulating crops (LACs). This approach is particularly beneficial in areas with limited arable land. However, research on practical LACs is still limited. To address this, a field survey and trial were conducted in Cd-contaminated farmlands in Guangdong Province, China. The survey assessed 41 crops, revealing that 83.4% of the samples met safety standards, with an average limit-exceeding risk (ERC-Cd) of 0.731. Based on the compliance status, 13 crops were selected for field trials on heavily polluted farmland to evaluate their stability. The compliance rate for these experimental crops reached 96.6%, with an average ERC-Cd of 0.483. Ultimately, 12 crops exhibiting high safety levels, stability, and potential for promotion were recommended as LACs. Throughout the field survey and trial, the identified LACs demonstrated high compliance rates (≥ 90.3%), stability across multiple seasons and locations, and potential adaptability to local environments and market demands. Thus, this study contributes to mitigating the contamination risk of agricultural products in Cd-contaminated farmlands of Guangdong. Furthermore, it facilitates the application and dissemination of alternative cultivation techniques by providing an effective method for screening practical LACs in specific regions.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"45 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832422","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

Interval Prediction of Fuel Cell Degradation Based on Voltage Signal Frequency Characteristics with TimesNet-GPR under Dynamic Conditions

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144503

Wenchao Zhu, Yongjia Li, Yafei Xu, Leiqi Zhang, Bingxin Guo, Rui Xiong, Changjun Xie

{"title":"Interval Prediction of Fuel Cell Degradation Based on Voltage Signal Frequency Characteristics with TimesNet-GPR under Dynamic Conditions","authors":"Wenchao Zhu, Yongjia Li, Yafei Xu, Leiqi Zhang, Bingxin Guo, Rui Xiong, Changjun Xie","doi":"10.1016/j.jclepro.2024.144503","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144503","url":null,"abstract":"Proton exchange membrane fuel cells (PEMFCs) are crucial modern sustainable energy generation devices. The accurate assessment of their state of health (SOH) and the forecast of their remaining useful life (RUL) are critical for their practical deployment. Current mainstream methods typically use time-domain voltage decay as the health indicator (HI) and rely on recurrent neural networks. However, PEMFC voltage decay results from multiple factors, including internal component degradation, changes in operating conditions, and environmental impacts. Low-frequency domain analysis can effectively detect degradation in the proton exchange membrane and gas diffusion layer, leading to more accurate SOH estimation for fuel cells. This study reshapes time-domain voltage signals into frequency factors in a 2D space based on frequency domain features to more accurately reflect the aging characteristics of PEMFCs. We propose a TimesNet-GPR method to accurately quantify the uncertainty in degradation prediction, demonstrating good adaptability with different lengths of training data and various dynamic conditions. This method uses TimesNet for point estimation prediction, overcoming the limitations of neural networks in capturing long-term dependencies, improving point estimation accuracy by 39.18% to 70.14% on dynamic cycling condition datasets. In order to evaluate uncertainty during point estimation and provide more accurate confidence interval predictions, Gaussian Process Regression (GPR), is utilized.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"1 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832437","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 Urban Low-Carbon Constraint and Heterogeneous Enterprise Location Choice 中国城市低碳约束与异质企业选址

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144504

Xuan Zou, Xianghan Yue, Xu Yang, Siqian Zou

{"title":"China Urban Low-Carbon Constraint and Heterogeneous Enterprise Location Choice","authors":"Xuan Zou, Xianghan Yue, Xu Yang, Siqian Zou","doi":"10.1016/j.jclepro.2024.144504","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144504","url":null,"abstract":"This study investigates the impact of low-carbon constraints on the location choices of heterogeneous firms. Based on data from 282 prefecture-level cities in China and 293,800 newly estabilished firms, this paper empirically analyzes the impact of urban low-carbon constraints on firms' location choices. Using a two-way fixed effect model and instrumental variables, a low-carbon location choice effect was found, indicating that the stronger the intensity of a city’s low-carbon constraints, the more willing high-productivity firms are to enter. Urban low-carbon constraints can prompt enterprises to engage in technological innovation, attracting high-productivity enterprises while inhibiting the entry of low-productivity enterprises. Additionally, low-carbon constraints enhance the market potential of cities and reduce labor costs, attracting various types of enterprises. A heterogeneity analysis reveals that urban low-carbon constraints are more attractive to firms in small and super cities in terms of city size, regular prefecture-level cities in terms of hierarchy, and energy- and technology-intensive businesses in terms of industry. These findings provide a theoretical basis and practical reference for the formulation of urban low-carbon constraint policies.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"30 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832428","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

Effect mechanisms of hematite and goethite on naphthalene biodegradation, insight from electron transfer and microbial gene expression

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144496

Shen Xiaofang, Su Xiaosi, Wan Yuyu, Xu Guigui, Zhang Qichen, Wang shinian, Lyu Hang, Dong Weihong

{"title":"Effect mechanisms of hematite and goethite on naphthalene biodegradation, insight from electron transfer and microbial gene expression","authors":"Shen Xiaofang, Su Xiaosi, Wan Yuyu, Xu Guigui, Zhang Qichen, Wang shinian, Lyu Hang, Dong Weihong","doi":"10.1016/j.jclepro.2024.144496","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144496","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs), particularly naphthalene (Nap), are persistent and hazardous pollutants, posing significant risks to both the environment and human health. Consequently, remediation strategies are urgently sought to mitigate Nap contamination, with bioremediation emerging as a promising approach. However, the efficacy of bioremediation, reliant on biodegradation, is hindered by various factors, prompting exploration into enhancing technologies. This study explored the potential of iron minerals, specifically hematite (α-Fe2O3) and goethite (α-FeO(OH)), in modulating Nap biodegradation from the perspectives of electron transfer and microbial gene expression. The results revealed that α-Fe2O3 promoted Nap biodegradation, while α-FeO(OH) inhibited it, and the promoting effect of α-Fe2O3 on the biodegradation of Nap increased with the increase in the α-Fe2O3 content, and the optimal content of α-Fe2O3 for promoting Nap biodegradation was approximately 7.5%, and the inhibitory effect of α-FeO(OH) on the biodegradation of Nap also increased with the increase in α-FeO(OH) content. Mechanistically, α-Fe2O3 facilitated microbial growth, accelerated electron transfer efficiency, enriched microbial diversity, and maintained enzyme activity, thus promoting Nap biodegradation. Conversely, α-FeO(OH) inhibited microbial growth, altered microbial communities, and reduced enzyme activity, leading to diminished Nap biodegradation. Therefore, the presence of α-Fe2O3 in the environment had a certain positive effect on the remediation of Nap contamination in groundwater. These findings underscore the complex interplay between iron minerals and microbial-mediated Nap biodegradation, offering insights into effective remediation strategies.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"38 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825604","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

Smart Cities Lighting the Way: Optimizing Energy Structure and Efficiency in the Border Areas

IF 11.1 1区环境科学与生态学

Journal of Cleaner Production Pub Date : 2024-12-16 DOI: 10.1016/j.jclepro.2024.144481

Hongyu Zhang, Yidi Wang, Hongyu Liu

{"title":"Smart Cities Lighting the Way: Optimizing Energy Structure and Efficiency in the Border Areas","authors":"Hongyu Zhang, Yidi Wang, Hongyu Liu","doi":"10.1016/j.jclepro.2024.144481","DOIUrl":"https://doi.org/10.1016/j.jclepro.2024.144481","url":null,"abstract":"Underdeveloped border regions face critical challenges in energy efficiency and energy structure, for which smart cities, leveraging advanced digital technologies, offer promising solutions. This study employs text classification algorithms to quantitatively assess smart cities in China and systematically evaluate the impact of smart cities on energy structure and energy efficiency in border areas. The research indicates that smart cities significantly optimize energy structures and enhance energy efficiency, especially in border areas. The mechanisms include improving government regulatory levels through smart supervision investments and reducing market segmentation by enhancing information connectivity. The effect of smart cities is more pronounced in underdeveloped provinces, industrial cities, and resource-oriented areas than in other regions. In addition, investments by provincial governments in both smart supervision and information connectivity have a greater impact on energy consumption in border areas than such investments by municipal governments. This study provides an empirical basis for using smart cities to optimize energy structures and mitigate energy inefficiency in border areas and offers practical insights for effectively allocating government funds to maximize the benefits of smart city investments.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"22 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825739","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