Green Technologies and Sustainability最新文献

{"title":"Synthesis, characterization and mechanical properties evaluation of muntingia calabura fibre reinforced epoxy composites: Fibre treatment comparison with NaOH and KOH","authors":"D. Mohana Krishnudu ,&nbsp;P. Venkateshwar Reddy ,&nbsp;R.V. Saikumar Reddy ,&nbsp;R. Meenakshi Reddy","doi":"10.1016/j.grets.2024.100155","DOIUrl":"10.1016/j.grets.2024.100155","url":null,"abstract":"<div><div>Numerous studies demonstrate that the alteration in the fibre surface caused by the alkali treatment enhances the mechanical capabilities. Muntingia calabura is the novel fibre was used in the present study. The present work illustrates the mechanical and characterization of NaOH and KOH treated muntingia calabura fibre reinforced epoxy composites. Muntingia calabura fibre is extracted from the bark of muntingia calabura plant. The collected fibres are treated with 10% alkali solution and then fibre–epoxy composites are fabricated with different fibre loadings, evaluated the mechanical properties of the Muntingia calabura fibre–epoxy composites. The interfacial bonding between the Muntingia calabura fibre and epoxy (LY-5052) observed with the morphological study. Using thermo gravimetric and infrared spectroscopy, the degradation behaviour and thermal stability of the Muntingia calabura fibre composites and the functional chemicals included in them are investigated respectively. The composites exhibit maximum tensile and flexural strengths of 84 MPa and 185 MPa, respectively, at 20 weight percent of the fibre content treated with NaOH. At 15 weight percent of the fibre content treated with NaOH, the composites have a maximum impact strength of 19.5 J/m². It was found that the thermal stability of fibre composites treated with KOH and NaOH ranged from 250 to 400 degrees Celsius.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100155"},"PeriodicalIF":0.0,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166528","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":"Optimization of a cyclone combustor in a flameless combustion using producer gas","authors":"Ibrahim Rasaq ,&nbsp;K.A. Al-Attab ,&nbsp;Ibrahim I. Enagi ,&nbsp;M. Yusof Idroas ,&nbsp;Abdul Rahman Mohamed","doi":"10.1016/j.grets.2024.100154","DOIUrl":"10.1016/j.grets.2024.100154","url":null,"abstract":"<div><div>Flameless combustion of producer gas offers significant environmental and efficiency advantages, but its implementation requires careful optimization of both the combustor design and operating conditions. This article is aimed to design a combustion chamber utilizing producer gas for achieving flameless combustion using SOLID-WORKS, computational fluid dynamics (CFD) ANSYS-FLUENT simulation and Design of Experiment (DOE) from Minitab software. The design varied inlet nozzle diameters from 20 to 50 mm and combustor heights from 500 to 800 mm. Computational fluid dynamics (CFD) simulations is utilized to explore the impact of altering chamber height and inlet diameter in order to achieve efficiency in flameless combustion. The producer gas composition and simulation parameters were based on prior studies. The evaluation is focused on CO, NOx emissions and the Damköhler number, and using Design of Experiment (DOE) methodology for optimization. Results showed that chamber height and inlet diameter had limited effects on combustion and CO emission. Therefore, increasing chamber height raised NOx emissions due to prolonged fuel exposure to high temperatures, while varying inlet nozzle diameter has no effect on Damköhler number, but chamber’s height does. Finally, Minitab optimization suggested a chamber with 30 mm inlet nozzle diameter and 600 mm height for desirable flameless combustion, and operating on an equivalence ratio of <span><math><mrow><mi>φ</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>7</mn></mrow></math></span> which resulted in the lowest CO and NOx emissions, with values of 71.5 ppm and 5.05 ppm, respectively.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100154"},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166529","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":"Biomaterials for energy storage: Synthesis, properties, and performance","authors":"Md. Shakil Chowdhury ,&nbsp;Md. Shah Oliullah ,&nbsp;Rifah Tasnim Islam ,&nbsp;Md Abu Hurayra ,&nbsp;Md. Zobair Al Mahmud ,&nbsp;Nazmul Hasan ,&nbsp;Md Khaledur Rahman ,&nbsp;Md Saiful Islam ,&nbsp;Julhas Khan ,&nbsp;Nayem Hossain","doi":"10.1016/j.grets.2024.100152","DOIUrl":"10.1016/j.grets.2024.100152","url":null,"abstract":"<div><div>The performance, synthesis, and characteristics of bio-based systems are the main topics of this study, which investigates the possibilities of biomaterials as energy storage devices. Biomaterials like chitin, chitosan, and other biopolymers have demonstrated promise as next-generation energy storage technologies, particularly as the world’s need for sustainable energy solutions continues to rise. In batteries and supercapacitors, they are appealing substitute for conventional materials due to their biocompatibility, biodegradability, and minimal environmental effect. The review highlights advances in biomaterial-based energy storage technologies, including improvements in conductivity, structural stability, and scalability. By integrating biomaterials into energy storage, researchers aim to create environmentally friendly systems with high performance and longevity. This review attempts to provide a thorough understanding of biomaterials’ potential in enhancing energy storage technologies toward a more sustainable future.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100152"},"PeriodicalIF":0.0,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745819","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":"Online condition monitoring and fault diagnosis in wind turbines: A comprehensive review on structure, failures, health monitoring techniques, and signal processing methods","authors":"Eyad Al Lahham ,&nbsp;Laith Kanaan ,&nbsp;Zaid Murad ,&nbsp;Haris M. Khalid ,&nbsp;Ghulam Amjad Hussain ,&nbsp;S.M. Muyeen","doi":"10.1016/j.grets.2024.100153","DOIUrl":"10.1016/j.grets.2024.100153","url":null,"abstract":"<div><div>Wind energy systems have been flourishing on a rapid scale as a reliable renewable energy source in several countries. However, as the demand for these systems continues to grow, it becomes crucial to have a reliable and cost-effective condition monitoring system to enhance their availability. Condition monitoring plays a crucial role in achieving economic and reliable wind turbine operation. Recently, online monitoring and fault detection have been gaining greater interest in protecting these systems. Innovative and novel methods are developed to achieve real-time and remote monitoring of wind turbines. Online monitoring can offer real-time data to indicate the health condition of these systems while in service. This reduces (1) loss of production and downtime, and (2) maintenance and operational costs incurred due to system failures. This proposed work presents a comprehensive review of wind turbine online condition monitoring methods and techniques presented in the literature. Moreover, the (1) structure, (2) failures, and (3) signal processing methods of wind turbine systems were presented. Furthermore, a brief comparison was presented of (1) online monitoring techniques, and (2) signal processing methods utilized for wind turbine systems. A detailed list of published work to date has been gathered to portray a complete picture of addressed developments in this area.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100153"},"PeriodicalIF":0.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167414","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":"Building information modeling – simulation and analysis of a University Edifice and its environs – A sustainable design approach","authors":"G.T.N. Veerendra ,&nbsp;Subhashish Dey ,&nbsp;Emma Jane Mantle ,&nbsp;A.V. Phani Manoj ,&nbsp;Siva Shanmukha Anjaneya Babu Padavala","doi":"10.1016/j.grets.2024.100150","DOIUrl":"10.1016/j.grets.2024.100150","url":null,"abstract":"<div><div>This study utilized Building Information Modeling (BIM) to refine an existing campus master plan, improving the built environment concerning usability and sustainability. Using capabilities of the premium version of the Autodesk Revit Architecture and its many add-ons for simulations and analyses, this research paper were through the evaluation of the directional alternatives with the actual data. This research paper undergone the simulations of wind patterns, solar exposure to the building, and energy factors for three different building orientations. The optimal construction orientation, designated as Directional Option 2, provides enhanced ventilation and sunlight access, yielding an annual customized solar radiation of 587 kWh/m². This option showcases the lowest energy consumption rate at 241 kWh/m²/yr, indicating substantial savings relative to other orientations and the average annual consumption standard of 333 kWh/m²/yr (Sheffield City Council, 2022). Assessing the designs against established benchmarks from EU policies, including the Energy Performance of Buildings Directive (EPBD), guarantees the models’ energy efficiency and sustainability. Autodesk Revit Architecture’s ability to simulate multiple design options and evaluate their performance against established standards confirms the validity of its assumptions. In addition, the wind analysis establishes a correlation between the results of the Revit simulation and the actual wind speed measurements taken during different seasons. This substantiates the fact that the simulation results are in close agreement with the measured values, despite the fact that there are some slight deviations. For example, the wind speed estimated at spring was 5.67 m/s, but simulations showed 6.5 m/s, which is slightly more than the actual. The seasonal solar analysis indicates that Directional Option 2 offers the highest solar exposure accuracy at 90% during summer, confirming its status as the most efficient choice for solar energy utilization. BIM is used as a transformative tool for sustainable development in this study’s comprehensive approach, allowing for data-driven decision-making that promotes an environmentally conscious and user-friendly built environment.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100150"},"PeriodicalIF":0.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745746","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":"Developing an optimal energy system model for a sustainable urban transportation framework planning in the long term through different climatic zones","authors":"Sara Azamian","doi":"10.1016/j.grets.2024.100151","DOIUrl":"10.1016/j.grets.2024.100151","url":null,"abstract":"<div><div>The modern lifestyle highlights the demand for an improved urban transportation infrastructure and a shift to renewable, efficient technologies. This evolution is essential for both developed and developing countries. The transportation system in a developing country such as Iran faces significant challenges, including low energy efficiency and high emissions. This situation makes the development of a sustainable transportation plan increasingly critical. Furthermore, there is considerable potential for renewable energy across various climatic zones in the country that should be utilized. This study presents a sustainable development model for the transportation system that incorporates zero-emission vehicles and renewable energy supply technologies in competition with traditional ones. The model is designed for long-term application and includes five case studies from various climatic zones in Iran, each featuring different renewable potentials and system scales. Determining the optimal structure of the system in each case study requires solving a linear, dynamic, and multi-criteria optimization problem. The objective function focuses on minimizing total costs, which include technological, energy, and social. All case studies indicate that developing a sustainable transportation system is optimal. However, larger case studies tend to produce more favorable optimization outcomes. According to the results, the scale of the case study is the most important factor in this research.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100151"},"PeriodicalIF":0.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699707","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":"Eco–friendly dyestuffs prepared with Curcuma Longa L. extracts and their antimicrobial activities","authors":"Hasan Çolak ,&nbsp;Sercan Gümüştekin ,&nbsp;Adem Önal ,&nbsp;Oğuz Özbek ,&nbsp;Necibe Canan Usta","doi":"10.1016/j.grets.2024.100141","DOIUrl":"10.1016/j.grets.2024.100141","url":null,"abstract":"<div><div>In this study, wool, cotton, polyester fabrics and wood samples were dyed with <em>Curcuma longa</em> (turmeric) extracts using CuSO₄, FeSO₄ and AlK(SO₄)₂ mordants. Dyeing processes were carried out using pre–, meta–, post– mordant and without–mordant dyeing methods. Yellow, mustard yellow, brown, greenish and light yellow color tones were obtained in samples dyed with turmeric. Rubbing fastness, washing fastness and light fastness of all dyed samples were evaluated. K/S and <em>L</em>* <em>a</em>* <em>b</em>* values of the dyed samples were determined by color measurement spectrophotometer. The highest K/S value was measured as 31.05 for CuSO₄ with meta–mordanting method for dyed wool using turmeric extract. The antimicrobial properties of the dyed textile products were determined by the disk diffusion method against <em>Staphylococcus aureus, Proteus mirabilis</em> and <em>Pseudomonas aeroginosa</em>. According to the antimicrobial activity test results, it was determined that the fabric samples dyed with turmeric have moderate antimicrobial activity.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100141"},"PeriodicalIF":0.0,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651576","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":"Evaluating the challenges to circular economy implementation in the apparel accessories industry: Implications for sustainable development","authors":"Kh. Harun Or Rashid ,&nbsp;Ridwan Al Aziz ,&nbsp;Chitra Lekha Karmaker ,&nbsp;A.B.M. Mainul Bari ,&nbsp;Asif Raihan","doi":"10.1016/j.grets.2024.100140","DOIUrl":"10.1016/j.grets.2024.100140","url":null,"abstract":"<div><div>The recent global shift toward sustainability has compelled businesses, particularly in emerging economies like Bangladesh, to adopt circular economy practices. The apparel accessories sector, which plays a crucial role in Bangladesh’s economy, faces significant environmental challenges, including inefficient resource consumption and waste generation. However, there is not much research on addressing the barriers that are hindering this industry’s adoption of circular economy practices. This study aims to fill this gap by identifying and analyzing key challenges using an integrated Fuzzy Decision-Making Trial and Evaluation Laboratory framework. This approach offers a novel methodological contribution by effectively handling complex interrelationships among the barriers and addressing the uncertainties related to decision-making. Data were gathered through a comprehensive literature review and relevant expert feedback, ensuring a robust analysis of the most pressing challenges. Thirteen critical challenges were finally identified and analyzed using the proposed evaluation framework. After evaluation, ‘inadequate leadership and top management commitment’, ‘lack of expertise and resources’, and ‘insufficient enforcement of environmental regulations’ emerged as the most significant barriers. The analysis further uncovered complex interrelationships between these challenges, revealing how they reinforce one another and hinder circular economy adoption. The findings offer broader implications for emerging economies by providing valuable insights for policymakers and industry leaders, emphasizing the need for targeted strategies to address the significant barriers. This way, this study is expected to facilitate the industry’s transition to a circular economy, reduce environmental impact, and promote sustainable growth.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651410","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":"Lifecycle cost and benefit analysis for parcel-scale implementation of green stormwater infrastructure","authors":"Liya E. Abera ,&nbsp;Cristiane Q. Surbeck ,&nbsp;S. Kyle McKay","doi":"10.1016/j.grets.2024.100139","DOIUrl":"10.1016/j.grets.2024.100139","url":null,"abstract":"<div><div>Green stormwater infrastructure (GSI) is commonly implemented to reduce excess stormwater runoff while also producing secondary environmental, health, and aesthetic benefits. However, GSI is sometimes perceived to be cost prohibitive for limited-budget site development projects. This study used lifecycle cost analysis (LCCA) and benefit-cost analysis (BCA) to investigate the cost-effectiveness of GSI combined with conventional stormwater infrastructure for a proposed parcel development site in Oxford, Mississippi, USA. Hydrologic modeling was conducted for a conventional underground detention facility as well as three GSIs (permeable pavement, rain garden, and grassy ditch), all of which met regulatory runoff attenuation targets for the site. The LCCA considered capital and operation and maintenance (O&amp;M) costs. Benefits were estimated under six categories – water, energy, climate, air quality, health, and community – based on existing tools for economic analysis of low impact development (LID). Economic benefits and costs over different scenarios of project lifecycles were compared using the present value (PV) approach in the benefit cost analysis (BCA). The lifecycle costs of two of the three GSIs (rain garden and grassy ditch) were lower than for the conventional alternative alone. However, in all three GSI cases, the long-term benefits of GSI features outweighed the costs. The methodology presented can be adapted to other locations to inform analyses of lifecycle costs and benefits and identify GSI and hybrid infrastructure options that are financially and environmentally feasible.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651498","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":"Water scarcity and its implications on sanitation: A perspective study in an emerging city in Northern Ghana","authors":"Samuel Kojo Abanyie ,&nbsp;Ebenezer Ebo Yahans Amuah ,&nbsp;Douti Biyogue Nang","doi":"10.1016/j.grets.2024.100138","DOIUrl":"10.1016/j.grets.2024.100138","url":null,"abstract":"<div><div>Water scarcity is a critical global challenge affecting billions of people, particularly in developing regions like sub-Saharan Africa. In Ghana, this issue has become increasingly pronounced, with limited access to clean and safe water posing serious threats to the health and livelihoods of many communities. This study investigated the intricate relationship between water scarcity and accessibility, and the associated implications on sanitation practices in Damongo, a newly created regional capital and an emerging city. The study showed that the area faced evident water scarcity, with a daily per capita water consumption as low as 0.128 m³. Mechanized boreholes emerged as potential solutions, particularly for the 61.2% of respondents experiencing waiting times exceeding 15 min. The economic repercussions were noteworthy, as high water costs impacted livelihoods, emphasizing the need for policy interventions, especially for low-income households. Sanitation challenges are widespread, with 62.8% relying on pit latrines, and 56.1% lacking proper infrastructure. Water and sanitation-related diseases like typhoid and diarrhoea highlight the need for urgent interventions to enhance water quality and sanitation practices. Household water infrastructure analysis revealed diverse, primarily privately owned sources. Gender imbalances persist in water-fetching responsibilities, with 58.2% relying solely on females. Domestic water sources predominantly involved traditional options, potentially exposing residents to unsafe practices. Sanitation maintenance practices and intervals varied, signaling the necessity for comprehensive solutions. Households without toilets resorted to open spaces (43.6%), gutters (29.1%), and public toilets (12.7%), indicating challenges in waste disposal and sanitation facility access. Insights on the health dimension considered uncovering the prevalence of the top five water and sanitation-related diseases for 2022. These included typhoid (24.3%), diarrhoea (30.0%), Cholera (11.7%), Dysentery (14.6%), and Hepatitis (19.3%). These findings suggest the pressing need for improved sanitation and clean water access, as inadequate infrastructure and water scarcity contribute significantly to these health challenges.</div></div>","PeriodicalId":100598,"journal":{"name":"Green Technologies and Sustainability","volume":"3 2","pages":"Article 100138"},"PeriodicalIF":0.0,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651411","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}