Water-Energy Nexus最新文献

{"title":"Economic feasibility assessment and parameter sensitivity analysis of rainwater harvesting systems in different climatic zones of China","authors":"Chonghua Xue ,&nbsp;Feng Xiong ,&nbsp;Junqi Li ,&nbsp;Xiaojing Li ,&nbsp;Jing Li ,&nbsp;Yu Wang ,&nbsp;Xiangyu Li ,&nbsp;Ziyu Cui","doi":"10.1016/j.wen.2025.01.001","DOIUrl":"10.1016/j.wen.2025.01.001","url":null,"abstract":"<div><div>Rainwater is an important non-traditional water resource, and the economic benefits of rainwater harvesting and utilization vary considerably across different climatic conditions. This paper constructs typical rainwater harvesting (RWH) models based on road watering and green space watering reuse pathways, as well as typical flat water year and cistern emptying time in three distinct climate zones of China: Urumqi (located in a semi-arid area), Baoding (located in a semi-humid area), and Shantou (located in a humid area). Using the Infoworks ICM model, long-term simulations (30 years) were conducted to evaluate the economic advantages of rainwater utilization across these climate zones. The Particle Swarm Optimization (PSO) was employed to optimize the cistern volume by integrating Net Present Value (NPV) and Benefit Cost Ratio (BCR). Additionally, multiple nonlinear regression analyses were employed to quantify the relationship between various catchment subsurfaces and the optimal reservoir volume. Sensitivity analyses, including Sobol sensitivity analysis, were performed for parameters such as subsurface characteristics, water price, discount rate, and number of days for emptying the impoundment. The study results indicated that the change curves of NPV and BCR in all three cities exhibit an increasing and then decreasing trend with the increase of reservoir volume under different reservoir setup scenarios. The optimal volume of the reservoir could be articulated through the fitting equation that relates the green space ratio to the road ratio. The discount rate and water price significantly impacted the optimal volume of storage tanks, with the sensitivity of the parameter of the number of days of emptying of the storage tanks to the optimal volume being greater in Shantou, a city in a high humid area. Conversely, in Urumqi, a semi-arid area, the variation of the parameter of greenland rate had a greater sensitivity to the volume of storage tanks. These findings provide valuable insights for the design and implementation of rainwater harvesting and utilization systems, offering practical guidance for sustainable urban development.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 6-17"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mitigation of nitrogen losses during pig manure management: Impact of manure cleaning technique","authors":"Jing Zhang ,&nbsp;Pei Li ,&nbsp;Junfeng Wan ,&nbsp;Xiaoying Guo ,&nbsp;Yan Wang ,&nbsp;Juan Wang","doi":"10.1016/j.wen.2024.12.001","DOIUrl":"10.1016/j.wen.2024.12.001","url":null,"abstract":"<div><div>Proper management of nitrogen-containing pig manure is crucial to realize its benefits of supporting plants-grow as fertilizer while minimizing its impact on the environment and climate change. Dry collection, rinsing and water submerging are manure cleaning techniques adopted in different types of pig farms and in different regions. As the first step of manure management, manure cleaning technique affects manure generation and nitrogen flow in the subsequent treatment and utilization processes. This short communication is to discuss different manure cleaning techniques and their impacts on nitrogen flow through pig manure management processes. Reducing nitrogen losses should focus on solid manure treatment such as composting when manure is dry collected. More diversified pathways of nitrogen losses are possible when manure is cleaned using water submerging technique. It is thus needed to develop proper and specific nitrogen management strategies and technologies, taking into account the manure cleaning technique adopted in pig farms.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 1-5"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overcoming water, sanitation, and hygiene challenges in critical regions of the global community","authors":"Debajyoti Bose ,&nbsp;Riya Bhattacharya ,&nbsp;Tanveen Kaur ,&nbsp;Ritesh Banerjee ,&nbsp;Tanya Bhatia ,&nbsp;Aritra Ray ,&nbsp;Bhavika Batra ,&nbsp;Arnab Mondal ,&nbsp;Paulami Ghosh ,&nbsp;Surajit Mondal","doi":"10.1016/j.wen.2024.11.003","DOIUrl":"10.1016/j.wen.2024.11.003","url":null,"abstract":"<div><div>This review provides a critical analysis of the global water and sanitation crisis, as well as how community-based approaches have led to innovative water management solutions. Regions of sub-Saharan Africa, south Asia, the Middle East, and island countries have been taken as models to understand mitigating crises related to water, sanitation, and hygiene (WASH) services. Selected WASH cases based on specific inclusion and exclusion criteria that highlighted finance, sustainability, and community engagement. The review analyses methods through which communities below the poverty line, living in densely populated areas, war zones, and island countries can foster innovation, and collaborations.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 277-296"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive review of production and characterization of biochar for removal of organic pollutants from water and wastewater","authors":"Deepraj Sarkar,&nbsp;Tanushka Florence Panicker,&nbsp;Ranjeet Kumar Mishra,&nbsp;M. Srinivas Kini","doi":"10.1016/j.wen.2024.11.001","DOIUrl":"10.1016/j.wen.2024.11.001","url":null,"abstract":"<div><div>Biochar is produced by the pyrolysis of organic constituents at moderate to low temperatures and oxygen-deficient conditions. Various types of biomass wastes are used as the starting points for biochar production, which not only makes better use of the waste resources already available but also significantly lessens environmental harm. Biochar is extensively used as a soil amendment, biofuel, catalyst, energy storage, and carbon sequestration regulator because of its excellent efficacy, environmental friendliness, and affordable price. Biochar has lately received much interest in wastewater treatment due to its significantly expanded surface area, excellent pore volume, accessibility of functional charge, and environmental durability. It may also be recycled because of its exceptional therapeutic effectiveness and resource recovery capabilities. The ability of biochar to absorb major contaminants makes it a suitable treatment solution for wastewater. For the intent of developing biochar, the techniques of gasification, hydrothermal carbonization, and pyrolysis have been developed. Biochar was employed to absorb minerals, heavy metals (HMs), and organic pollutants to remove impurities from water and wastewater. The adsorption methods of organic contaminants, nutrients in wastewater and HMs were examined. Understanding the interactions among the biochar’s structures, adsorption traits, and preparation parameters is crucial. The generation, characterization, and biochar exploitation for the elimination of organic and HMs were the main topics of the current review.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive review of effective parameters to improve the performance of the Savonius turbine using a computational model and comparison with practical results","authors":"Ali Jebelli ,&nbsp;Nafiseh Lotfi ,&nbsp;Mohammad Saeid Zare ,&nbsp;Mustapha C.E. Yagoub","doi":"10.1016/j.wen.2024.11.002","DOIUrl":"10.1016/j.wen.2024.11.002","url":null,"abstract":"<div><div>Amidst growing global concerns over climate change and escalating greenhouse gas emissions from fossil fuels, the pursuit of renewable energy sources has become critical. This study focuses on harnessing hydropower using Savonius turbines, which are known for their efficiency in generating energy at lower flow rates. However, the intrinsic low efficiency of these turbines necessitates precise optimization tailored to specific river or channel conditions. In this research, we optimized the performance of Savonius turbines by analyzing key parameters such as the height-to-diameter ratio, blade twist, and the integration of multi-stage configurations with deflectors. Our findings reveal significant efficiency improvements through strategic modifications. Specifically, by reducing the height-to-diameter ratio from 1.2 to 0.8 and maintaining a Tip Speed Ratio (TSR) of 0.6, the power coefficient increased by 15%, from 0.33 to 0.38. Further optimization was achieved by adjusting the blade twist angle, with an increase in power coefficient up to an optimal angle of 45°, beyond which efficiency declined. Implementing a two-stage turbine setup with a 90-degree phase difference between stages further improved the power coefficient to 0.51 at the same TSR. Additionally, the use of deflectors, particularly at a 90° angle, significantly boosted the power coefficient, highlighting their effectiveness in optimizing water flow impact on the turbine. This comprehensive study not only advances the understanding of Savonius turbine optimization but also contributes to broader renewable energy applications. The research offers critical insights into sustainable hydroelectric power generation, providing practical solutions to enhance turbine performance for real-world applications.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 266-274"},"PeriodicalIF":0.0,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation and factors influencing a drinking water treatment plant, Shire Indassilassie, Ethiopia","authors":"Nguse Mekonen Mesfun ,&nbsp;Sisay Demeku Derib","doi":"10.1016/j.wen.2024.08.001","DOIUrl":"10.1016/j.wen.2024.08.001","url":null,"abstract":"<div><p>This research assesses the efficacy of the water treatment plant in Shire Indassilassie, Tigray, Ethiopia, focusing on the slow sand filtration system. Despite the inclusion of horizontal roughing filtration and a sedimentation tank, the water treatment plant struggles with an inadequate and turbid water supply. This study evaluates the water treatment plant’s performance through field evaluation, interviews, and laboratory experiments, concentrating on major treatment processes to identify performance-limiting factors. The water source had an average turbidity of 29.70 ± 1.03 NTU in the dry season and 94.27 ± 16.71 NTU in the summer. Results indicate that horizontal roughing filtration, sedimentation tank, and slow sand filtration achieve average turbidity removal efficiencies of 42.02% ± 4.00%, 5.67% ± 3.15%, and 83.51% ± 8.75%, respectively, during the dry season. In the summer or wet season, these treatment units achieve efficiencies of 40.06% ± 3.26%, 28.17% ± 4.62%, and 77.07% ± 4.61%, respectively. Additionally, the average run times for slow sand filtration are 22 days in the dry season and 13 days in the summer. Total and fecal coliform removals were effective, except in the sedimentation tank. A one-way ANOVA confirms a significant difference in turbidity among treatment units. Factors such as fine filter sand particles causing faster clogging, pipe misconnections, inadequate cleaning practices, irregular filtration rates, air binding due to a lack of backfilling at startup, and a lack of periodic monitoring and emergency response lead to suboptimal turbidity removal and shorter slow sand filtration run times. The study underscores the need for corrective measures to address these issues, enhancing water treatment plant sustainability in the region.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 235-242"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588912524000146/pdfft?md5=d01a4f1de092fc4fc6e87d3c45fd7d79&pid=1-s2.0-S2588912524000146-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on rapid policy-based strategic environmental assessment-taking China's regional development policy of Zhejiang Pilot Free Trade Zone as an example","authors":"Mingzhu Xu ,&nbsp;Huanhuan Wang ,&nbsp;Haiqing Geng ,&nbsp;Hefang Hong ,&nbsp;Lina Wu","doi":"10.1016/j.wen.2024.09.001","DOIUrl":"10.1016/j.wen.2024.09.001","url":null,"abstract":"<div><p>Strategic Environmental Assessment(SEA) is acknowledged to be an important decision support tool. SEA concerns potential environmental impacts of decisions made by policy, plan and programs. At present, policy-based SEA is still in the exploratory stage in China. The development of policy-based SEA is extremely slow due to institutional and technical difficulties. In practice, the time from policy proposals to policy implementation is relatively short. So the corresponding policy-based SEA should reflect the characteristics of rapidity, centre on the seriously negative impact that may be caused policy implementation, and provide early and initial warnings.A simple and rapid framework was designed for policy-based SEA in this study. The framework includes four parts, namely, policy analysis, eco-environmental impact identification, eco-environmental sensitivity assessment, policy recommendations. Following this framework, regional development policy of Zhejiang Pilot Free Trade Zone (FTZ) was assessed. Results reveal that: 1)seriously negative environment impacts may arise from petroleum refining and chemical industry, oil and gas storage and transportation, iron ore transportation, liquid bulk commodities transportation. 2) Central Daishan area, Shengsi archipelago, Taohua Island, Liuheng island in Zhejiang FTZ is relatively of high eco-sensitivity, thus the fore-mentioned activities should be environmentally friendly or restricted in these areas. 3)In the future, continuous efforts should be made to promote sealing and automation of petroleum refining, chemical industry. Green petrochemical manufacturing technology utilization is recommended to reduce pollution from the source. Further, accelerating the construction of transportation pipelines is suggested in order to reduce air pollutants emissions caused by vehicle transportation activities. Fishery stock enhancement and releasing is recommended to counteract negative impact on fishery caused by iron and liquid bulk commodity marine transportation.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 227-234"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588912524000134/pdfft?md5=10e1d13bc5e5159407ea38a528fae89a&pid=1-s2.0-S2588912524000134-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Urban spatial, engineering and management resilience capacity enhancement from a flood safety perspective","authors":"Junqi Li ,&nbsp;Yue Zou ,&nbsp;Jing Li ,&nbsp;Shuai Si","doi":"10.1016/j.wen.2024.07.002","DOIUrl":"10.1016/j.wen.2024.07.002","url":null,"abstract":"<div><p>The increasing frequency of extreme weather events caused by climate change has had a significant impact on cities worldwide. Resilient cities have become a prominent topic of discussion in both domestic and international urban planning. This paper examines the challenges and barriers faced in building resilient cities, as well as the current state of resilience construction in China amidst global flooding issues. By analyzing the impact factors of urban flooding, a comprehensive urban flood resilience evaluation model is proposed, comprising spatial resilience, engineering resilience, and management resilience. Previous studies have not closely integrated the influencing factors with the flood disaster process. The CRITIC assignment method takes into account the correlation between the indicators while objectively considering the magnitude of the differences between them. Therefore, this paper adopts the CRITIC assignment method to categorize and integrate the evaluating factors, aiming to enhance the overall resilience to urban floods. The flood resilience evaluation factors are reassessed in this study to ensure that the various systems and segments of the city can prevent, effectively respond to, and efficiently recover from flood disasters while achieving sustainable development.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 213-226"},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588912524000122/pdfft?md5=a2bd8f35024773e043f0ef0a6eec62ee&pid=1-s2.0-S2588912524000122-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum regarding missing or incorrect Declaration of conflict-of-Interest statements in previously published articles","authors":"","doi":"10.1016/j.wen.2024.07.001","DOIUrl":"10.1016/j.wen.2024.07.001","url":null,"abstract":"","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 275-276"},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141705626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon neutrality transformation pathway in ecoregions: An empirical study of Chongming District, Shanghai, China","authors":"Yuhao Zhang ,&nbsp;Ru Guo ,&nbsp;Kaiming Peng ,&nbsp;Angzu Cai ,&nbsp;Leyi Wang ,&nbsp;Ruimin Lin ,&nbsp;Haoran Wu","doi":"10.1016/j.wen.2024.05.001","DOIUrl":"10.1016/j.wen.2024.05.001","url":null,"abstract":"<div><p>In the context of global efforts to address climate change, research into regional carbon neutrality strategies has become especially critical. For developing countries and regions, it is essential to scientifically and rationally assessing the paths for small-scale regional transformations under carbon neutrality imperatives to effectively implement low-carbon transition measures. This study utilizes Chongming District in Shanghai of China as a case to establish a framework for forecasting carbon emission and sink from a multi-dimensional natural-social perspective. This facilitates the simulation and optimization of pathways for carbon neutrality transformation. The results indicate: (1) From 2000 to 2020, the total regional carbon emission exhibited a rising trend, while the total carbon sink initially declined then increased, indicating potential enhancement zone with significant potential and space for carbon neutrality development. (2) Enhanced management of ecological spaces and land use planning result in notable increases in carbon sink. Strategic measures such as emission and consumption reductions, alongside energy transitions, effectively controlled carbon emission growth and facilitated comprehensive decarbonization. (3) By combining ecological priority with enhanced control and balanced development with enhanced control, the region can achieve carbon neutrality. This showcases the effective role of policy regulation in facilitating high-quality carbon–neutral transformations. (4)Effective ecosystem management along with robust reduction and transition strategies enable county-level carbon–neutral transformations, offering a model and methodological support for other developing regions facing the twin challenges of economic growth and environmental sustainability.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 200-212"},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588912524000109/pdfft?md5=66213215ad9181e6d6fc8279878f98fb&pid=1-s2.0-S2588912524000109-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141281762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}